LT-22222-L -- LoRa I/O Controller User Manual

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[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220523163353-1.jpeg?width=500&height=604&rev=1.1||alt="image-20220523163353-1.jpeg" height="604" width="500"]]

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**Table of Contents:**

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* [[1. Introduction>>path:#H1.Introduction]]

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** [[1.1 What is the LT-22222-L I/O Controller?>>path:#H1.1WhatistheLT-22222-LI2FOController3F]]

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** [[1.2 Specifications>>path:#H1.2A0Specifications]]

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** [[1.3 Features>>path:#H1.3A0Features]]

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** [[1.4 Applications>>path:#H1.4A0Applications]]

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** [[1.5 Hardware Variants>>path:#H1.5A0HardwareVariants]]

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* [[2. Assembling the device>>path:#H2.A0Assemblingthedevice]]

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** [[2.1 Connecting the antenna>>path:#H2.1Connectingtheantenna]]

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** [[2.2 Terminals>>path:#H2.2Terminals]]

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** [[2.3 Connecting LT-22222-L to a Power Source>>path:#H2.3ConnectingLT-22222-LtoaPowerSource]]

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* [[3. Registering LT-22222-L with a LoRaWAN Network Server>>path:#H3.RegisteringLT-22222-LwithaLoRaWANNetworkServer]]

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** [[3.1 Prerequisites>>path:#H3.1Prerequisites]]

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** [[3.2 The Things Stack>>path:#H3.2TheThingsStack]]

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*** [[3.2.1 Setting up>>path:#H3.2.1Settingup]]

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**** [[3.2.1.1 Using the LoRaWAN Device Repository>>path:#H3.2.1.1UsingtheLoRaWANDeviceRepository]]

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**** [[3.2.1.2 Adding device manually>>path:#H3.2.1.2Addingdevicemanually]]

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*** [[3.2.2 Joining>>path:#H3.2.2Joining]]

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*** [[3.2.3 Uplinks>>path:#H3.2.3Uplinks]]

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*** [[3.2.4 Downlinks>>path:#H3.2.4Downlinks]]

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** [[3.3 Working Modes and Uplink Payload formats>>path:#H3.3WorkingModesandUplinkPayloadformats]]

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*** [[3.3.1 AT+MOD=1, 2ACI+2AVI>>path:#H3.3.1A0AT2BMOD3D12C2ACI2B2AVI]]

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*** [[3.3.2 AT+MOD=2, (Double DI Counting)>>path:#H3.3.2AT2BMOD3D22C28DoubleDICounting29]]

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*** [[3.3.3 AT+MOD=3, Single DI Counting + 2 x ACI>>path:#H3.3.3AT2BMOD3D32CSingleDICounting2B2xACI]]

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*** [[3.3.4 AT+MOD=4, Single DI Counting + 1 x Voltage Counting>>path:#H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting]]

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*** [[3.3.5 AT+MOD=5, Single DI Counting + 2 x AVI + 1 x ACI>>path:#H3.3.5AT2BMOD3D52CSingleDICounting2B2xAVI2B1xACI]]

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*** [[3.3.6 AT+ADDMOD=6 (Trigger Mode, Optional)>>path:#H3.3.6AT2BADDMOD3D628TriggerMode2COptional29]]

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*** [[3.3.7 Payload Decoder>>path:#H3.3.7PayloadDecoder]]

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** [[3.4 Configure LT-22222-L via AT Commands or Downlinks>>path:#H3.4200BConfigureLT-22222-LviaATCommandsorDownlinks]]

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*** [[3.4.1 Common commands>>path:#H3.4.1Commoncommands]]

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*** [[3.4.2 Sensor-related commands>>path:#H3.4.2Sensor-relatedcommands]]

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**** [[3.4.2.1 Set Transmit/Uplink Interval>>path:#H3.4.2.1SetTransmit2FUplinkInterval]]

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**** [[3.4.2.2 Set the Working Mode (AT+MOD)>>path:#H3.4.2.2SettheWorkingMode28AT2BMOD29]]

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**** [[3.4.2.3 Request an uplink from the device>>path:#H3.4.2.3RequestA0anuplinkfromthedevice]]

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**** [[3.4.2.4 Enable/Disable Trigger Mode>>path:#H3.4.2.4Enable2FDisableTriggerMode]]

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**** [[3.4.2.5 Request trigger settings>>path:#H3.4.2.5RequestA0triggersettings]]

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**** [[3.4.2.6 Enable/Disable DI1/DI2/DI3 as a trigger>>path:#H3.4.2.6Enable2FDisableDI12FDI22FDI3asatrigger]]

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**** [[3.4.2.7 Trigger1 – Set DI1 or DI3 as a trigger>>path:#H3.4.2.7Trigger12013SetDI1orDI3asatrigger]]

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**** [[3.4.2.8 Trigger2 – Set DI2 as a trigger>>path:#H3.4.2.8Trigger22013SetDI2asatrigger]]

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**** [[3.4.2.9 Trigger – Set AC (current) as a trigger>>path:#H3.4.2.9Trigger2013SetAC28current29asatrigger]]

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**** [[3.4.2.10 Trigger – Set AV (voltage) as trigger>>path:#H3.4.2.10Trigger2013SetAV28voltage29astrigger]]

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**** [[3.4.2.11 Trigger – Set the minimum interval>>path:#H3.4.2.11Trigger2013Settheminimuminterval]]

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**** [[3.4.2.12 DO ~~-~~- Control Digital Output DO1/DO2/DO3>>path:#H3.4.2.12DO--ControlDigitalOutputDO12FDO22FDO3]]

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**** [[3.4.2.13 DO ~~-~~- Control Digital Output DO1/DO2/DO3 with time control>>path:#H3.4.2.13DO--ControlDigitalOutputDO12FDO22FDO3withtimecontrol]]

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**** [[3.4.2.14 Relay ~~-~~- Control Relay Output RO1/RO2>>path:#H3.4.2.14Relay--ControlRelayOutputRO12FRO2]]

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**** [[3.4.2.15 Relay ~~-~~- Control Relay Output RO1/RO2 with time control>>path:#H3.4.2.15Relay--ControlRelayOutputRO12FRO2withtimecontrol]]

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**** [[3.4.2.16 Counting ~~-~~- Voltage threshold counting>>path:#H3.4.2.16Counting--Voltagethresholdcounting]]

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**** [[3.4.2.17 Counting ~~-~~- Pre-configure the Count Number>>path:#H3.4.2.17Counting--Pre-configuretheCountNumber]]

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**** [[3.4.2.18 Counting ~~-~~- Clear Counting>>path:#H3.4.2.18Counting--ClearCounting]]

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**** [[3.4.2.19 Counting ~~-~~- Set Saving Interval for 'Counting Result'>>path:#H3.4.2.19Counting--SetSavingIntervalfor27CountingResult27]]

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**** [[3.4.2.20 Reset saved RO and DO states>>path:#H3.4.2.20A0ResetsavedROandDOstates]]

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**** [[3.4.2.21 Encrypted payload>>path:#H3.4.2.21A0Encryptedpayload]]

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**** [[3.4.2.22 Get sensor value>>path:#H3.4.2.22A0Getsensorvalue]]

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**** [[3.4.2.23 Resetting the downlink packet count>>path:#H3.4.2.23Resettingthedownlinkpacketcount]]

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**** [[3.4.2.24 When the limit bytes are exceeded, upload in batches>>path:#H3.4.2.24Whenthelimitbytesareexceeded2Cuploadinbatches]]

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**** [[3.4.2.25 Copy downlink to uplink>>path:#H3.4.2.25A0Copydownlinktouplink]]

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**** [[3.4.2.26 Query firmware version, frequency band, subband, and TDC time>>path:#H3.4.2.26Queryfirmwareversion2Cfrequencyband2Csubband2CandTDCtime]]

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** [[3.5 Integrating with ThingsEye.io>>path:#H3.5IntegratingwithThingsEye.io]]

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*** [[3.5.1 Configuring The Things Stack>>path:#H3.5.1ConfiguringTheThingsStack]]

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*** [[3.5.2 Configuring ThingsEye.io>>path:#H3.5.2ConfiguringThingsEye.io]]

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**** [[3.5.2.1 Viewing integration details>>path:#H3.5.2.1Viewingintegrationdetails]]

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**** [[3.5.2.2 Viewing events>>path:#H3.5.2.2Viewingevents]]

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**** [[3.5.2.3 Deleting an integration>>path:#H3.5.2.3Deletinganintegration]]

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**** [[3.5.2.4 Viewing sensor data on a dashboard>>path:#H3.5.2.4Viewingsensordataonadashboard]]

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** [[3.6 Interface Details>>path:#H3.6InterfaceDetails]]

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*** [[3.6.1 Digital Input Ports: DI1/DI2/DI3 (For LT-33222-L, Low Active)>>path:#H3.6.1DigitalInputPorts:DI12FDI22FDI328ForLT-33222-L2CLowActive29]]

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*** [[3.6.2 Digital Input Ports: DI1/DI2>>path:#H3.6.2DigitalInputPorts:DI12FDI2]]

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*** [[3.6.3 Digital Output Ports: DO1/DO2>>path:#H3.6.3DigitalOutputPorts:DO12FDO2]]

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*** [[3.6.4 Analog Input Interfaces>>path:#H3.6.4AnalogInputInterfaces]]

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*** [[3.6.5 Relay Output>>path:#H3.6.5RelayOutput]]

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** [[3.7 LED Indicators>>path:#H3.7LEDIndicators]]

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* [[4. Using AT Commands>>path:#H4.UsingATCommands]]

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** [[4.1 Connecting the LT-22222-L to a PC>>path:#H4.1ConnectingtheLT-22222-LtoaPC]]

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** [[4.2 LT-22222-L related AT commands>>path:#H4.2LT-22222-LrelatedATcommands]]

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** [[4.2 Common AT Command Sequence>>path:#H4.2CommonATCommandSequence]]

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*** [[4.2.1 Multi-channel ABP mode (Use with SX1301/LG308)>>path:#H4.2.1Multi-channelABPmode28UsewithSX13012FLG30829]]

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*** [[4.2.2 Single-channel ABP mode (Use with LG01/LG02)>>path:#H4.2.2Single-channelABPmode28UsewithLG012FLG0229]]

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*** [[4.2.3 Change to Class A>>path:#H4.2.3ChangetoClassA]]

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* [[5. Case Study>>path:#H5.CaseStudy]]

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** [[5.1 Counting how many objects pass through the flow line>>path:#H5.1Countinghowmanyobjectspassthroughtheflowline]]

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* [[6. FAQ>>path:#H6.FAQ]]

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** [[6.1 How to update the firmware?>>path:#H6.1Howtoupdatethefirmware3F]]

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** [[6.2 How to change the LoRaWAN frequency band/region?>>path:#H6.2HowtochangetheLoRaWANfrequencyband2Fregion3F]]

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** [[6.3 How to set up LT-22222-L to work with a Single Channel Gateway, such as LG01/LG02?>>path:#H6.3HowtosetupLT-22222-LtoworkwithaSingleChannelGateway2CsuchasLG012FLG023F]]

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** [[6.4 How to change the uplink interval?>>path:#H6.4Howtochangetheuplinkinterval3F]]

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** [[6.5 Can I see the counting event in the serial output?>>path:#H6.5CanIseethecountingeventintheserialoutput3F]]

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** [[6.6 Can I use point-to-point communication with LT-22222-L?>>path:#H6.6CanIusepoint-to-pointcommunicationwithLT-22222-L3F]]

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** [[6.7 Why does the relay output default to an open relay after the LT-22222-L is powered off?>>path:#H6.7WhydoestherelayoutputdefaulttoanopenrelayaftertheLT-22222-Lispoweredoff3F]]

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** [[6.8 Can I set up LT-22222-L as an NC (Normally Closed) relay?>>path:#H6.8CanIsetupLT-22222-LasanNC28NormallyClosed29relay3F]]

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** [[6.9 Can the LT-22222-L save the RO state?>>path:#H6.9CantheLT-22222-LsavetheROstate3F]]

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** [[6.10 Why does the LT-22222-L always report 15.585V when measuring the AVI?>>path:#H6.10WhydoestheLT-22222-Lalwaysreport15.585VwhenmeasuringtheAVI3F]]

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* [[7. Troubleshooting>>path:#H7.Troubleshooting]]

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** [[7.1 Downlink isn't working. How can I solve this?>>path:#H7.1Downlinkisn27tworking.HowcanIsolvethis3F]]

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** [[7.2 Having trouble uploading an image?>>path:#H7.2Havingtroubleuploadinganimage3F]]

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** [[7.3 Why can't I join TTN in the US915 /AU915 bands?>>path:#H7.3Whycan27tIjoinTTNintheUS9152FAU915bands3F]]

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** [[7.4 Why can the LT-22222-L perform uplink normally, but cannot receive downlink?>>path:#H7.4WhycantheLT-22222-Lperformuplinknormally2Cbutcannotreceivedownlink3F]]

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* [[8. Ordering information>>path:#H8.Orderinginformation]]

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* [[9. Package information>>path:#H9.Packageinformation]]

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* [[10. Support>>path:#H10.Support]]

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* [[11. Reference>>path:#H11.Reference200B200B200B200B200B]]

= 1. Introduction =

== 1.1 What is the LT-22222-L I/O Controller? ==

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**This manual is also applicable to the LT-33222-L.**

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The Dragino (% style="color:blue" %)**LT-22222-L I/O Controller**(%%) is an advanced LoRaWAN end device designed to provide seamless wireless long-range connectivity with various I/O options, including analog current and voltage inputs, digital inputs and outputs, and relay outputs.

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The LT-22222-L I/O Controller simplifies and enhances I/O monitoring and controlling. It is ideal for professional applications in wireless sensor networks, including irrigation systems, smart metering, smart cities, building automation, and more. These controllers are designed for easy, cost-effective deployment using LoRa wireless technology.

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With the LT-22222-L I/O Controller, users can transmit data over ultra-long distances with low power consumption using LoRa, a spread-spectrum modulation technique derived from chirp spread spectrum (CSS) technology that operates on license-free ISM bands.

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You can connect the LT-22222-L I/O Controller to a LoRaWAN network service provider in several ways:

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* If there is public LoRaWAN network coverage in the area where you plan to install the device (e.g., The Things Stack Community Network), you can select a network and register the LT-22222-L I/O controller with it.

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* If there is no public LoRaWAN coverage in your area, you can set up a LoRaWAN gateway, or multiple gateways, and connect them to a LoRaWAN network server to create adequate coverage. Then, register the LT-22222-L I/O controller with this network.

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* Setup your own private LoRaWAN network.

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The network diagram below illustrates how the LT-22222-L communicates with a typical LoRaWAN network.

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[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/lorawan-nw.jpg?width=900&height=354&rev=1.1||alt="lorawan-nw.jpg" height="354" width="900"]]

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== 1.2 Specifications ==

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(% style="color:#037691" %)**Hardware System:**

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* STM32L072xxxx MCU

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* SX1276/78 Wireless Chip

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* Power Consumption:

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** Idle: 4mA@12V

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** 20dB Transmit: 34mA@12V

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* Operating Temperature: -40 ~~ 85 Degrees, No Dew

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(% style="color:#037691" %)**Interface for Model: LT22222-L:**

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* 2 x Digital dual direction Input (Detect High/Low signal, Max: 50V, or 220V with optional external resistor)

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* 2 x Digital Output (NPN output. Max pull-up voltage 36V,450mA)

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* 2 x Relay Output (5A@250VAC / 30VDC)

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* 2 x 0~~20mA Analog Input (res:0.01mA)

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* 2 x 0~~30V Analog Input (res:0.01V)

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* Power Input 7~~ 24V DC.

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(% style="color:#037691" %)**LoRa Spec:**

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* Frequency Range:

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** Band 1 (HF): 862 ~~ 1020 MHz

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** Band 2 (LF): 410 ~~ 528 MHz

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* 168 dB maximum link budget.

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* +20 dBm - 100 mW constant RF output vs.

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* +14 dBm high-efficiency PA.

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* Programmable bit rate up to 300 kbps.

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* High sensitivity: down to -148 dBm.

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* Bullet-proof front end: IIP3 = -12.5 dBm.

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* Excellent blocking immunity.

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* Low RX current of 10.3 mA, 200 nA register retention.

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* Fully integrated synthesizer with a resolution of 61 Hz.

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* FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.

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* Built-in bit synchronizer for clock recovery.

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* Preamble detection.

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* 127 dB Dynamic Range RSSI.

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* Automatic RF Sense and CAD with ultra-fast AFC.

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* Packet engine up to 256 bytes with CRC.

== 1.3 Features ==

* LoRaWAN Class A & Class C modes

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* Optional Customized LoRa Protocol

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* Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/RU864/IN865/MA869

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* AT Commands to change parameters

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* Remotely configure parameters via LoRaWAN Downlink

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* Firmware upgradable via program port

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* Counting

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== 1.4 Applications ==

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* Smart buildings & home automation

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* Logistics and supply chain management

* Smart metering

* Smart agriculture

* Smart cities

* Smart factory

== 1.5 Hardware Variants ==

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(% border="1" cellspacing="3" style="width:510px" %)

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|(% style="background-color:#4f81bd; color:white; width:94px" %)**Model**|(% style="background-color:#4f81bd; color:white; width:172px" %)**Photo**|(% style="background-color:#4f81bd; color:white; width:244px" %)**Description**

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|(% style="width:94px" %)**LT-33222-L**|(% style="width:172px" %)(((

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(% style="text-align:center" %)

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[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/lt33222-l.jpg?width=95&height=110&rev=1.1||alt="lt33222-l.jpg" height="110" width="95"]]

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)))|(% style="width:256px" %)(((

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* 3 x Digital Input (Bi-direction)

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* 3 x Digital Output

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* 2 x Relay Output (5A@250VAC / 30VDC)

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* 2 x 0~~20mA Analog Input (res:0.01mA)

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* 2 x 0~~30V Analog Input (res:0.01v)

* 1 x Counting Port

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= 2. Assembling the device =

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== 2.1 Connecting the antenna ==

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Connect the LoRa antenna to the antenna connector, **ANT**,** **located on the top right side of the device, next to the upper screw terminal block. Secure the antenna by tightening it clockwise.

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**Warning! Do not power on the device without connecting the antenna.**

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== 2.2 Terminals ==

The LT-22222-L has two screw terminal blocks. The upper screw terminal block has 6 screw terminals and the lower screw terminal block has 10 screw terminals.

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**Upper screw terminal block (from left to right):**

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(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:381px" %)

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|=(% style="width: 139px;background-color:#4f81bd;color:white" %)Screw Terminal|=(% style="width: 242px;background-color:#4f81bd;color:white" %)Function

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|(% style="width:139px" %)GND|(% style="width:242px" %)Ground

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|(% style="width:139px" %)VIN|(% style="width:242px" %)Input Voltage

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|(% style="width:139px" %)AVI2|(% style="width:242px" %)Analog Voltage Input Terminal 2

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|(% style="width:139px" %)AVI1|(% style="width:242px" %)Analog Voltage Input Terminal 1

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|(% style="width:139px" %)ACI2|(% style="width:242px" %)Analog Current Input Terminal 2

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|(% style="width:139px" %)ACI1|(% style="width:242px" %)Analog Current Input Terminal 1

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**Lower screw terminal block (from left to right):**

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(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:253px" %)

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|=(% style="width: 125px;background-color:#4f81bd;color:white" %)Screw Terminal|=(% style="width: 128px;background-color:#4f81bd;color:white" %)Function

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|(% style="width:125px" %)RO1-2|(% style="width:128px" %)Relay Output 1

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|(% style="width:125px" %)RO1-1|(% style="width:128px" %)Relay Output 1

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|(% style="width:125px" %)RO2-2|(% style="width:128px" %)Relay Output 2

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|(% style="width:125px" %)RO2-1|(% style="width:128px" %)Relay Output 2

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|(% style="width:125px" %)DI2+|(% style="width:128px" %)Digital Input 2

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|(% style="width:125px" %)DI2-|(% style="width:128px" %)Digital Input 2

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|(% style="width:125px" %)DI1+|(% style="width:128px" %)Digital Input 1

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|(% style="width:125px" %)DI1-|(% style="width:128px" %)Digital Input 1

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|(% style="width:125px" %)DO2|(% style="width:128px" %)Digital Output 2

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|(% style="width:125px" %)DO1|(% style="width:128px" %)Digital Output 1

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== 2.3 Connecting LT-22222-L to a Power Source ==

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The LT-22222-L I/O Controller can be powered by a **7–24V DC** power source. Connect your power supply’s **positive wire** to the **VIN** and the **negative wire** to the **GND** screw terminals. The power indicator **(PWR) LED** will turn on when the device is properly powered.

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**We recommend that you power on the LT-22222-L after adding its registration information to the LoRaWAN network server. Otherwise, the device will continuously send join-request messages to attempt to join a LoRaWAN network but will fail.**

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[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/1653297104069-180.png?rev=1.1||alt="1653297104069-180.png"]]

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= 3. Registering LT-22222-L with a LoRaWAN Network Server =

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The LT-22222-L supports both OTAA (Over-the-Air Activation) and ABP (Activation By Personalization) methods to activate with a LoRaWAN Network Server. However, OTAA is the most secure method for activating a device with a LoRaWAN Network Server. OTAA regenerates session keys upon initial registration and regenerates new session keys after any subsequent reboots. By default, the LT-22222-L is configured to operate in LoRaWAN Class C mode.

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== 3.1 Prerequisites ==

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The LT-22222-L comes with device registration information such as DevEUI, AppEUI, and AppKey which allows you to register it with a LoRaWAN network. This registration information can be found on a sticker that can be found inside the package. Please keep the **registration information** sticker in a safe place for future reference.

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[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20230425173427-2.png?width=530&height=246&rev=1.1||alt="image-20230425173427-2.png" height="246" width="530"]]

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If you are unable to set the provided root key and other identifiers in the network server, you must generate new keys and identifiers with the network server and configure the device with them using AT commands.

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The following subsections explain how to register the LT-22222-L with different LoRaWAN network server providers.

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== 3.2 The Things Stack ==

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This section guides you through how to register your LT-22222-L with The Things Stack Sandbox.

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The Things Stack Sandbox was formally called The Things Stack Community Edition.

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The network diagram below illustrates the connection between the LT-22222-L and The Things Stack, as well as how the data can be integrated with the ThingsEye IoT platform.

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[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/dragino-lorawan-nw-lt-22222-n.jpg?width=1400&height=374&rev=1.1||alt="dragino-lorawan-nw-lt-22222-n.jpg" height="374" width="1400"]]

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You can use a LoRaWAN gateway, such as the [[Dragino LPS8N>>url:https://www.dragino.com/products/lora-lorawan-gateway/item/200-lps8n.html]], to expand or create LoRaWAN coverage in your area.

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=== 3.2.1 Setting up ===

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* Sign up for a free account with [[The Things Stack Sandbox>>url:https://eu1.cloud.thethings.network]] if you do not have one yet.

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* Log in to your The Things Stack Sandbox account.

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* Create an **application** with The Things Stack if you do not have one yet (E.g., dragino-docs).

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* Go to your application's page and click on the **End devices** in the left menu.

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* On the End devices page, click on **+ Register end device**. Two registration options are available:

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==== 3.2.1.1 Using the LoRaWAN Device Repository ====

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* On the **Register end device** page:

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** Select the option **Select the end device in the LoRaWAN Device Repository **under **Input method**.

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** Select the **End device brand**, **Model**, **Hardware version**, **Firmware version**, and **Profile (Region)** from the respective dropdown lists.

354

*** **End device brand**: Dragino Technology Co., Limited

355

*** **Model**: LT22222-L I/O Controller

356

*** **Hardware ver**: Unknown

357

*** **Firmware ver**: 1.6.0

358

*** **Profile (Region)**: Select the region that matches your device.

359

** Select the **Frequency plan** that matches your device from the **Frequency plan** dropdown list.

360

361

[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/lt-22222-l-dev-repo-reg-p1.png?rev=1.1||alt="lt-22222-l-dev-repo-reg-p1.png"]]

362

363

364

* Register end device page continued...

365

** Enter the **AppEUI** in the **JoinEUI** field and click the **Confirm** button. If The Things Stack accepts the JoinEUI you provided, it will display the message 'This end device can be registered on the network'.

366

** In the **DevEUI** field, enter the **DevEUI**.

367

** In the **AppKey** field, enter the **AppKey.**

368

** In the **End device ID** field, enter a unique name for your LT-22222-L within this application.

369

** Under **After registration**, select the **View registered end device** option.

370

** Click **Register end device** button.

371

372

[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/lt-22222-l-dev-repo-reg-p2.png?rev=1.1||alt="lt-22222-l-dev-repo-reg-p2.png"]]

373

374

375

* You will be navigated to the **Device overview** page.

376

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[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/lt-22222-device-overview.png?rev=1.1||alt="lt-22222-device-overview.png"]]

378

379

380

==== 3.2.1.2 Adding device manually ====

381

382

383

* On the **Register end device** page:

384

** Select the option **Enter end device specifies manually** under **Input method**.

385

** Select the **Frequency plan** that matches your device from the **Frequency plan** dropdown list.

386

** Select the **LoRaWAN version** as **LoRaWAN Specification 1.0.3**

387

** Select the **Regional Parameters version** as** RP001 Regional Parameters 1.0.3 revision A**

388

** Click **Show advanced activation, LoRaWAN class and cluster settings** link to expand the hidden section.

389

** Select the option **Over the air activation (OTAA)** under the **Activation mode.**

390

** Select **Class C (Continuous)** from the **Additional LoRaWAN class capabilities** dropdown list.

391

392

[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/lt-22222-l-manually-p1.png?rev=1.2||alt="lt-22222-l-manually-p1.png"]]

393

394

395

* Register end device page continued...

396

** Enter the **AppEUI** in the **JoinEUI** field and click the **Confirm** button. If The Things Stack accepts the JoinEUI you provided, it will display the message '//**This end device can be registered on the network**//'

397

** In the **DevEUI** field, enter the **DevEUI**.

398

** In the **AppKey** field, enter the **AppKey**.

399

** In the **End device ID** field, enter a unique name for your LT-22222-N within this application.

400

** Under **After registration**, select the **View registered end device** option.

401

** Click the **Register end device** button.

402

403

[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/lt-22222-l-manually-p2.png?rev=1.3||alt="lt-22222-l-manually-p2.png"]]

404

405

406

You will be navigated to the **Device overview** page.

407

408

409

[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/lt-22222-device-overview.png?rev=1.1||alt="lt-22222-device-overview.png"]]

410

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=== 3.2.2 Joining ===

413

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415

On the end device's page (in this case, lt-22222-l), click on **Live data** tab. The Live data panel for your device will display. Initially, it is blank.

416

417

Now power on your LT-22222-L. The **TX LED** will **fast-blink 5 times** which means the LT-22222-L will enter the **work mode** and start to **join** The Things Stack network server. The **TX LED** will be on for **5 seconds** after joining the network. In the **Live data** panel, you can see the **join-request** and **join-accept** messages exchanged between the device and the network server.

418

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[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/lt-22222-l-joining.png?rev=1.2||alt="lt-22222-l-joining.png"]]

421

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423

=== 3.2.3 Uplinks ===

424

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426

After successfully joining, the device will send its first **uplink data message** to The Things Stack application it belongs to (in this example, it is **dragino-docs**). When the LT-22222-L sends an uplink message to the server, the **TX LED** turns on for **1 second**. By default, you will receive an uplink data message from the device every 10 minutes.

427

428

Click on one of the **Forward uplink data messages **to see its payload content. The payload content is encapsulated within the **decode_payload {}** JSON object.

429

430

[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/lt-22222-ul-payload-decoded.png?rev=1.1||alt="lt-22222-ul-payload-decoded.png"]]

431

432

433

If you can't see the decoded payload, it is because you haven't added the uplink formatter code. To add the uplink formatter code, select **Applications > [your application] > End devices** > [**your end device]** > **Payload formatters** > **Uplink**. Then select **Use Device repository formatters** for the **Formatter type** dropdown. Click the **Save changes** button to apply the changes.

434

435

(% class="box infomessage" %)

436

(((

437

The Things Stack provides two levels of payload formatters: application level and device level. The device-level payload formatters **override **the application-level payload formatters.

438

)))

439

440

[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/lt-22222-ul-payload-fmt.png?rev=1.1||alt="lt-22222-ul-payload-fmt.png"]]

441

442

443

We have written a payload formatter that resolves some decoding issues present in The Things Stack Device Repository payload formatter. You can add it under the **Custom JavaScript formatter**. It can be found [[here>>url:https://github.com/dragino/dragino-end-node-decoder/blob/main/LT22222-L/v1.6_decoder_ttn%20.txt]]:

444

445

(% class="wikigeneratedid" %)

446

[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/lt-22222-l-js-custom-payload-formatter.png?rev=1.1||alt="lt-22222-l-js-custom-payload-formatter.png"]]

447

448

449

=== 3.2.4 Downlinks ===

450

451

452

When the LT-22222-L receives a downlink message from the LoRaWAN Network Server, the **RX LED** turns on for **1 second**.

453

454

455

== 3.3 Working Modes and Uplink Payload formats ==

456

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458

The LT-22222-L has 5 **working modes**. It also has an interrupt/trigger mode for different types of applications that can be used together with any working mode as an additional feature. The default mode is MOD1 and you can switch between these modes using AT commands.

459

460

* (% style="color:blue" %)**MOD1**(%%): (default mode/factory set): 2ACI + 2AVI + DI + DO + RO

461

462

* (% style="color:blue" %)**MOD2**(%%): Double DI Counting + DO + RO

463

464

* (% style="color:blue" %)**MOD3**(%%): Single DI Counting + 2 x ACI + DO + RO

465

466

* (% style="color:blue" %)**MOD4**(%%): Single DI Counting + 1 x Voltage Counting + DO + RO

467

468

* (% style="color:blue" %)**MOD5**(%%): Single DI Counting + 2 x AVI + 1 x ACI + DO + RO

469

470

* (% style="color:blue" %)**ADDMOD6**(%%): Trigger Mode, Optional, used together with MOD1 ~~ MOD5

471

472

The uplink messages are sent over LoRaWAN FPort=2. By default, an uplink message is sent every 10 minutes.

473

474

475

=== 3.3.1 AT+MOD~=1, 2ACI+2AVI ===

(((

This is the default mode.

480

481

The uplink payload is 11 bytes long.

482

(% style="display:none" wfd-invisible="true" %)

483

484

(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)

485

|(% style="background-color:#4f81bd; color:white" %)**Size(bytes)**|(% style="background-color:#4f81bd; color:white" %)**2**|(% style="background-color:#4f81bd; color:white" %)**2**|(% style="background-color:#4f81bd; color:white" %)**2**|(% style="background-color:#4f81bd; color:white" %)**2**|(% style="background-color:#4f81bd; color:white" %)**1**|(% style="background-color:#4f81bd; color:white" %)**1**|(% style="background-color:#4f81bd; color:white" %)**1**

|Value|(((

AVI1 voltage

)))|(((

AVI2 voltage

)))|(((

ACI1 Current

)))|(((

ACI2 Current

)))|**DIDORO***|(((

Reserve

)))|MOD

)))

(((

(% style="color:#4f81bd" %)*** DIDORO**(%%) is a combination of RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1, and its size is1 byte long as shown below.

501

502

(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)

503

|**bit 7**|**bit 6**|**bit 5**|**bit 4**|**bit 3**|**bit 2**|**bit 1**|**bit 0**

504

|RO1|RO2|--DI3--|DI2|DI1|--DO3--|DO2|DO1

505

)))

506

507

* RO is for the relay. ROx=1: CLOSED, ROx=0 always OPEN.

508

* DI is for digital input. DIx=1: HIGH or FLOATING, DIx=0: LOW.

509

* DO is for reverse digital output. DOx=1: LOW, DOx=0: HIGH or FLOATING.

510

511

(% style="color:red" %)**Note: DI3 and DO3 bits are not valid for LT-22222-L**

512

513

For example, if the payload is: [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220523175847-2.png?rev=1.1||alt="image-20220523175847-2.png"]]

514

515

516

**The interface values can be calculated as follows: **

517

518

AVI1 channel voltage is 0x04AB/1000=1195(DEC)/1000=1.195V

519

520

AVI2 channel voltage is 0x04AC/1000=1.196V

521

522

ACI1 channel current is 0x1310/1000=4.880mA

523

524

ACI2 channel current is 0x1300/1000=4.864mA

525

526

The last byte 0xAA= **10101010**(b) means,

527

528

* [1] The RO1 relay channel is CLOSED, and the RO1 LED is ON.

529

* [0] The RO2 relay channel is OPEN, and the RO2 LED is OFF.

530

* **[1] DI3 - not used for LT-22222-L.**

531

* [0] DI2 channel input is LOW, and the DI2 LED is OFF.

532

* [1] DI1 channel input state:

533

** DI1 is FLOATING when no sensor is connected between DI1+ and DI1-.

534

** DI1 is HIGH when a sensor is connected between DI1- and DI1+ and the sensor is ACTIVE.

535

** DI1 LED is ON in both cases.

536

* **[0] DO3 - not used for LT-22222-L.**

537

* [1] DO2 channel output is LOW, and the DO2 LED is ON.

538

* [0] DO1 channel output state:

539

** DO1 is FLOATING when there is no load between DO1 and V+.

540

** DO1 is HIGH and there is a load between DO1 and V+.

541

** DO1 LED is OFF in both cases.

Reserve = 0

MOD = 1

=== 3.3.2 AT+MOD~=2, (Double DI Counting) ===

(((

**For LT-22222-L**: In this mode, **DI1 and DI2** are used as counting pins.

)))

(((

The uplink payload is 11 bytes long.

557

558

(% style="color:red" %)**Note:The maximum count depends on the bytes it is.

559

The maximum count for four bytes is FFFFFFFF (hex) = 4294967295 (dec).

560

It starts counting again when it reaches the maximum value.**

561

562

(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)

563

|(% style="background-color:#4f81bd; color:white" %)**Size(bytes)**|(% style="background-color:#4f81bd; color:white" %)**4**|(% style="background-color:#4f81bd; color:white" %)**4**|(% style="background-color:#4f81bd; color:white" %)**1**|(% style="background-color:#4f81bd; color:white" %)**1**|(% style="background-color:#4f81bd; color:white" %)**1**

Reserve

)))|MOD

)))

(((

(% style="color:#4f81bd" %)***DIDORO**(%%) is a combination of RO1, RO2, FIRST, Reserve, Reserve, DO3, DO2 and DO1, and its size is 1 byte long as shown below.

571

572

(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)

573

|**bit 7**|**bit 6**|**bit 5**|**bit 4**|**bit 3**|**bit 2**|**bit 1**|**bit 0**

574

|RO1|RO2|FIRST|Reserve|Reserve|--DO3--|DO2|DO1

575

576

* RO is for the relay. ROx=1: CLOSED, ROx=0 always OPEN.

577

)))

578

579

* FIRST: Indicates that this is the first packet after joining the network.

580

* DO is for reverse digital output. DOx=1: LOW, DOx=0: HIGH or FLOATING.

581

582

(((

583

(% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L**

)))

(((

**To activate this mode, run the following AT commands:**

)))

(((

(% class="box infomessage" %)

(((

**AT+MOD=2**

**ATZ**

)))

)))

(((

(% style="color:#4f81bd" %)**AT Commands for counting:**

)))

(((

**For LT22222-L:**

(% style="color:blue" %)**AT+TRIG1=0,100**(%%)** (sets the DI1 port to trigger on a LOW level. The valid signal duration is 100ms) **

611

612

(% style="color:blue" %)**AT+TRIG1=1,100**(%%)** (sets the DI1 port to trigger on a HIGH level. The valid signal duration is 100ms) **

613

614

(% style="color:blue" %)**AT+TRIG2=0,100**(%%)** (sets the DI2 port to trigger on a LOW level. The valid signal duration is 100ms) **

615

616

(% style="color:blue" %)**AT+TRIG2=1,100**(%%)** (sets the DI2 port to trigger on a HIGH level. The valid signal duration is 100ms) **

617

618

(% style="color:blue" %)**AT+SETCNT=1,60**(%%)** (sets the COUNT1 value to 60)**

619

620

(% style="color:blue" %)**AT+SETCNT=2,60 **(%%)**(sets the COUNT2 value to 60)**

)))

=== 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===

625

626

627

(% style="color:red" %)**Note: The maximum count depends on the bytes it is.

628

The maximum count for four bytes is FFFFFFFF (hex) = 4294967295 (dec).

629

It starts counting again when it reaches the maximum value.**

630

631

**LT22222-L**: In this mode, the DI1 is used as a counting pin.

632

633

(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)

634

|(% style="background-color:#4f81bd; color:white" %)**Size(bytes)**|(% style="background-color:#4f81bd; color:white" %)**4**|(% style="background-color:#4f81bd; color:white" %)**2**|(% style="background-color:#4f81bd; color:white" %)**2**|(% style="background-color:#4f81bd; color:white" %)**1**|(% style="background-color:#4f81bd; color:white" %)**1**|(% style="background-color:#4f81bd; color:white" %)**1**

|Value|COUNT1|(((

ACI1 Current

)))|(((

ACI2 Current

)))|DIDORO*|Reserve|MOD

640

641

(((

642

(% style="color:#4f81bd" %)***DIDORO**(%%) is a combination of RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1, for a total of 1 byte, as shown below.

643

644

(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)

645

|**bit 7**|**bit 6**|**bit 5**|**bit 4**|**bit 3**|**bit 2**|**bit 1**|**bit 0**

646

|RO1|RO2|FIRST|Reserve|Reserve|--DO3--|DO2|DO1

647

)))

648

649

* RO is for the relay. ROx=1: closed, ROx=0 always open.

650

* FIRST: Indicates that this is the first packet after joining the network.

651

* DO is for reverse digital output. DOx=1: output low, DOx=0: high or floating.

652

653

(((

654

(% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L.**

)))

(((

**To activate this mode, run the following AT commands:**

)))

(((

(% class="box infomessage" %)

(((

**AT+MOD=3**

**ATZ**

)))

)))

(((

AT Commands for counting:

673

674

The AT Commands for counting are similar to the [[MOD2 Counting Command>>path:#H3.3.2AT2BMOD3D22C28DoubleDICounting29]]s.

)))

=== 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===

679

680

681

(% style="color:red" %)**Note:The maximum count depends on the bytes it is.

682

The maximum count for four bytes is FFFFFFFF (hex) = 4294967295 (dec).

683

It starts counting again when it reaches the maximum value.**

(((

**LT22222-L**: In this mode, the DI1 is used as a counting pin.

)))

(((

The AVI1 is also used for counting. It monitors the voltage and checks it every **60 seconds**. If the voltage is higher or lower than VOLMAX mV, the AVI1 count increases by 1, allowing AVI1 counting to be used to measure a machine's working hours.

692

693

(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)

694

|(% style="background-color:#4f81bd; color:white" %)**Size(bytes)**|(% style="background-color:#4f81bd; color:white" %)**4**|(% style="background-color:#4f81bd; color:white" %)**4**|(% style="background-color:#4f81bd; color:white" %)**1**|(% style="background-color:#4f81bd; color:white" %)**1**|(% style="background-color:#4f81bd; color:white" %)**1**

Reserve

)))|MOD

)))

(((

(% style="color:#4f81bd" %)**DIDORO **(%%)is a combination of RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1, for a total of 1 byte, as shown below.

702

703

(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)

704

|**bit 7**|**bit 6**|**bit 5**|**bit 4**|**bit 3**|**bit 2**|**bit 1**|**bit 0**

705

|RO1|RO2|FIRST|Reserve|Reserve|--DO3--|DO2|DO1

706

)))

707

708

* RO is for the relay. ROx=1: closed, ROx=0 always open.

709

* FIRST: Indicates that this is the first packet after joining the network.

710

* DO is for reverse digital output. DOx=1: output low, DOx=0: high or floating.

711

712

(((

713

(% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L.**

)))

(((

**To activate this mode, run the following AT commands:**

)))

(((

(% class="box infomessage" %)

(((

**AT+MOD=4**

**ATZ**

)))

)))

(((

AT Commands for counting are similar to the [[MOD2 Counting Command>>path:#H3.3.2AT2BMOD3D22C28DoubleDICounting29]]s.

)))

(((

**In addition to that, below are the commands for AVI1 Counting:**

737

738

(% style="color:blue" %)**AT+SETCNT=3,60 **(%%)**(Sets AVI1 Count to 60)**

739

740

(% style="color:blue" %)**AT+VOLMAX=20000 **(%%)**(If the AVI1 voltage is higher than VOLMAX (20000mV =20V), the counter increases by 1)**

741

742

(% style="color:blue" %)**AT+VOLMAX=20000,0 **(%%)**(If the AVI1 voltage is lower than VOLMAX (20000mV =20V), counter increases by 1)**

743

744

(% style="color:blue" %)**AT+VOLMAX=20000,1 **(%%)**(If the AVI1 voltage is higher than VOLMAX (20000mV =20V), counter increases by 1)**

)))

=== 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI ===

749

750

751

(% style="color:red" %)**Note:The maximum count depends on the bytes it is.

752

The maximum count for four bytes is FFFF (hex) = 65535 (dec).

753

It starts counting again when it reaches the maximum value.**

754

755

756

**LT22222-L**: In this mode, the DI1 is used as a counting pin.

757

758

(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)

759

|(% style="background-color:#4f81bd; color:white" %)**Size(bytes)**|(% style="background-color:#4f81bd; color:white" %)**2**|(% style="background-color:#4f81bd; color:white" %)**2**|(% style="background-color:#4f81bd; color:white" %)**2**|(% style="background-color:#4f81bd; color:white" %)**2**|(% style="background-color:#4f81bd; color:white" %)**1**|(% style="background-color:#4f81bd; color:white" %)**1**|(% style="background-color:#4f81bd; color:white" %)**1**

|Value|(((

AVI1 voltage

)))|(((

AVI2 voltage

)))|(((

ACI1 Current

)))|COUNT1|DIDORO*|(((

Reserve

)))|MOD

(((

(% style="color:#4f81bd" %)**DIDORO**(%%) is a combination of RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1, for a total of 1 byte, as shown below.

772

773

(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)

774

|**bit 7**|**bit 6**|**bit 5**|**bit 4**|**bit 3**|**bit 2**|**bit 1**|**bit 0**

775

|RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1

776

)))

777

778

* RO is for the relay. ROx=1: closed, ROx=0 always open.

779

* FIRST: Indicates that this is the first packet after joining the network.

780

* (((

781

DO is for reverse digital output. DOx=1: output low, DOx=0: high or floating.

)))

(((

(% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L.**

)))

(((

**To activate this mode, run the following AT commands:**

)))

(((

(% class="box infomessage" %)

(((

**AT+MOD=5**

**ATZ**

)))

)))

(((

Other AT Commands for counting are similar to the [[MOD2 Counting Command>>path:#H3.3.2AT2BMOD3D22C28DoubleDICounting29]]s.

)))

=== 3.3.6 AT+ADDMOD~=6 (Trigger Mode, Optional) ===

807

808

809

(% style="color:#4f81bd" %)**This mode is optional and intended for trigger purposes. It can operate __alongside__ with other modes.**

810

811

For example, if you configure the following commands:

812

813

* **AT+MOD=1 ** **~-~->** Sets the default working mode

814

* **AT+ADDMOD6=1** **~-~->** Enables trigger mode

815

816

The LT-22222-L will continuously monitor AV1, AV2, AC1, and AC2 every 5 seconds. It will send uplink packets in two cases:

817

818

1. Periodic uplink: Based on TDC time. The payload is the same as in normal mode (MOD=1 as set above). These are (% style="color:#4f81bd" %)**unconfirmed**(%%) uplinks.

819

1. (((

820

Trigger uplink: sent when a trigger condition is met. In this case, LT will send two packets

821

822

* The first uplink uses the payload specified in trigger mode (MOD=6).

823

* The second packet uses the normal mode payload (MOD=1 as set above). Both are (% style="color:#4f81bd" %)**confirmed uplinks.**

824

)))

825

826

(% style="color:#037691" %)**AT Commands to set Trigger Conditions**:

827

828

(% style="color:#4f81bd" %)**Trigger based on voltage**:

829

830

Format: AT+AVLIM=<AV1_LIMIT_LOW>,< AV1_LIMIT_HIGH>,<AV2_LIMIT_LOW>,< AV2_LIMIT_HIGH>

**Example:**

AT+AVLIM=3000,6000,0,2000 (triggers an uplink if AVI1 voltage is lower than 3V or higher than 6V, or if AV2 voltage is higher than 2V)

836

837

AT+AVLIM=5000,0,0,0 (triggers an uplink if AVI1 voltage is lower than 5V. Use 0 for parameters that are not in use)

838

839

840

(% style="color:#4f81bd" %)**Trigger based on current**:

841

842

Format: AT+ACLIM=<AC1_LIMIT_LOW>,< AC1_LIMIT_HIGH>,<AC2_LIMIT_LOW>,< AC2_LIMIT_HIGH>

**Example:**

AT+ACLIM=10000,15000,0,0 (triggers an uplink if AC1 current is lower than 10mA or higher than 15mA)

848

849

850

(% style="color:#4f81bd" %)**Trigger based on DI status**:

851

852

DI status triggers Flag.

853

854

Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >

**Example:**

AT+ DTRI =1,0 (Enable DI1 trigger / disable DI2 trigger)

860

861

862

(% style="color:#037691" %)**LoRaWAN Downlink Commands for Setting the Trigger Conditions:**

863

864

**Type Code**: 0xAA. Downlink command same as AT Command **AT+AVLIM, AT+ACLIM**

865

866

**Format**: AA xx yy1 yy1 yy2 yy2 yy3 yy3 yy4 yy4

867

868

AA: Type Code for this downlink Command:

869

870

xx: **0**: Limit for AV1 and AV2; **1**: limit for AC1 and AC2; **2**: DI1and DI2 trigger enable/disable.

871

872

yy1 yy1: AC1 or AV1 LOW limit or DI1/DI2 trigger status.

873

874

yy2 yy2: AC1 or AV1 HIGH limit.

875

876

yy3 yy3: AC2 or AV2 LOW limit.

877

878

Yy4 yy4: AC2 or AV2 HIGH limit.

879

880

881

**Example 1**: AA 00 13 88 00 00 00 00 00 00

882

883

Same as AT+AVLIM=5000,0,0,0 (triggers an uplink if AVI1 voltage is lower than 5V. Use 0s for parameters that are not in use)

884

885

886

**Example 2**: AA 02 01 00

887

888

Same as AT+ DTRI =1,0 (Enable DI1 trigger / disable DI2 trigger)

889

890

891

(% style="color:#4f81bd" %)**Trigger Settings Payload Explanation:**

892

893

MOD6 Payload: a total of 11 bytes

894

895

(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:515px" %)

896

|(% style="background-color:#4f81bd; color:white; width:60px" %)**Size(bytes)**|(% style="background-color:#4f81bd; color:white; width:69px" %)**1**|(% style="background-color:#4f81bd; color:white; width:69px" %)**1**|(% style="background-color:#4f81bd; color:white; width:109px" %)**1**|(% style="background-color:#4f81bd; color:white; width:49px" %)**6**|(% style="background-color:#4f81bd; color:white; width:109px" %)**1**|(% style="background-color:#4f81bd; color:white; width:50px" %)**1**

|Value|(((

TRI_A FLAG

)))|(((

TRI_A Status

)))|(((

TRI_DI FLAG+STA

)))|Reserve|Enable/Disable MOD6|(((

MOD(6)

)))

(% style="color:#4f81bd" %)**TRI FLAG1**(%%) is a combination to show if the trigger is set for this part. Total 1 byte as below.

908

909

(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:515px" %)

910

|**bit 7**|**bit 6**|**bit 5**|**bit 4**|**bit 3**|**bit 2**|**bit 1**|**bit 0**

|(((

AV1_LOW

)))|(((

AV1_HIGH

)))|(((

AV2_LOW

)))|(((

AV2_HIGH

)))|(((

AC1_LOW

)))|(((

AC1_HIGH

)))|(((

AC2_LOW

)))|(((

AC2_HIGH

)))

* Each bit shows if the corresponding trigger has been configured.

**Example:**

10100000: This means the system is configured to use the triggers AV1_LOW and AV2_LOW.

934

935

936

(% style="color:#4f81bd" %)**TRI Status1**(%%) is a combination to show which condition is triggered. Total 1 byte as below.

937

938

(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:515px" %)

939

|**bit 7**|**bit 6**|**bit 5**|**bit 4**|**bit 3**|**bit 2**|**bit 1**|**bit 0**

|(((

AV1_LOW

)))|(((

AV1_HIGH

)))|(((

AV2_LOW

)))|(((

AV2_HIGH

)))|(((

AC1_LOW

)))|(((

AC1_HIGH

)))|(((

AC2_LOW

)))|(((

AC2_HIGH

)))

* Each bit shows which status has been triggered on this uplink.

**Example:**

10000000: The uplink is triggered by AV1_LOW, indicating that the voltage is too low.

963

964

965

(% style="color:#4f81bd" %)**TRI_DI FLAG+STA **(%%)is a combination to show which condition is triggered. Total 1 byte as below.

966

967

(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:515px" %)

* Each bit shows which status has been triggered on this uplink.

**Example:**

00000111: This means both DI1 and DI2 triggers are enabled, and this packet is triggered by DI1.

976

977

00000101: This means both DI1 and DI2 triggers are enabled.

978

979

980

(% style="color:#4f81bd" %)**Enable/Disable MOD6 **(%%): 0x01: MOD6 is enabled. 0x00: MOD6 is disabled.

981

982

Downlink command to poll/request MOD6 status:

**AB 06**

When the device receives this command, it will send the MOD6 payload.

987

988

989

=== 3.3.7 Payload Decoder ===

(((

**Decoder for TTN/loraserver/ChirpStack**: [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>url:https://github.com/dragino/dragino-end-node-decoder]]

)))

== 3.4 Configure LT-22222-L via AT Commands or Downlinks ==

(((

You can configure LT-22222-L I/O Controller via AT Commands or LoRaWAN Downlinks.

)))

(((

(((

There are two types of commands:

)))

)))

* (% style="color:blue" %)**Common commands**(%%):

1012

1013

* (% style="color:blue" %)**Sensor-related commands**(%%):

1014

1015

=== 3.4.1 Common commands ===

(((

These are available for each sensor and include actions such as changing the uplink interval or resetting the device. For firmware v1.5.4, you can find the supported common commands under: [[End Device AT Commands and Downlink Command>>path:/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/]]s.

)))

=== 3.4.2 Sensor-related commands ===

1025

1026

1027

These commands are specially designed for the LT-22222-L. Commands can be sent to the device using options such as an AT command or a LoRaWAN downlink payload.

1028

1029

1030

==== 3.4.2.1 Set Transmit/Uplink Interval ====

1031

1032

1033

Sets the uplink interval of the device. The default uplink transmission interval is 10 minutes.

1034

1035

(% style="color:#037691" %)**AT command**

1036

1037

(% border="2" style="width:500px" %)

1038

|**Command**|AT+TDC=<time>

1039

|**Parameters**|**time **: uplink interval in milliseconds

1040

|**Get**|AT+TDC=?

1041

|**Response**|(((

1042

current uplink interval

OK

)))

|**Set**|AT+TDC=<time>

|**Response**|OK

|**Example**|(((

AT+TDC=30000

Sets the uplink interval to **30 seconds** (30000 milliseconds)

1052

)))

1053

1054

(% style="color:#037691" %)**Downlink payload**

1055

1056

(% border="2" style="width:500px" %)

|**Payload**|(((

)))

|**Parameters**|(((

**prefix** : 0x01

**time** : uplink interval in **seconds**, represented by **3 bytes** in **hexadecimal**.

)))

|**Example**|(((

01 **00 00 1E**

Sets the uplink interval to **30 seconds**

1069

1070

Conversion: 30 (dec) = 00 00 1E (hex)

1071

1072

See [[RapidTables>>url:https://www.rapidtables.com/convert/number/decimal-to-hex.html?x=30]]

1073

1074

[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/Screenshot%202024-11-23%20at%2018.27.11.png?rev=1.2||alt="Screenshot 2024-11-23 at 18.27.11.png"]]

1075

)))

1076

1077

==== 3.4.2.2 Set the Working Mode (AT+MOD) ====

1078

1079

1080

Sets the working mode.

1081

1082

(% style="color:#037691" %)**AT command**

1083

1084

(% border="2" style="width:500px" %)

1085

|(% style="width:97px" %)**Command**|(% style="width:413px" %)AT+MOD=<working_mode>

1086

|(% style="width:97px" %)**Parameters**|(% style="width:413px" %)(((

1087

**working_mode** :

1088

1089

1 = (Default mode/factory set): 2ACI + 2AVI + DI + DO + RO

1090

1091

2 = Double DI Counting + DO + RO

1092

1093

3 = Single DI Counting + 2 x ACI + DO + RO

1094

1095

4 = Single DI Counting + 1 x Voltage Counting + DO + RO

1096

1097

5 = Single DI Counting + 2 x AVI + 1 x ACI + DO + RO

1098

1099

6 = Trigger Mode, Optional, used together with MOD1 ~~ MOD5

1100

)))

1101

|(% style="width:97px" %)**Get**|(% style="width:413px" %)AT+MOD=?

1102

|(% style="width:97px" %)**Response**|(% style="width:413px" %)(((

Current working mode

OK

)))

|(% style="width:97px" %)**Set**|(% style="width:413px" %)AT+MOD=<working_mode>

1108

|(% style="width:97px" %)**Response**|(% style="width:413px" %)(((

1109

Attention:Take effect after ATZ

OK

)))

|(% style="width:97px" %)**Example**|(% style="width:413px" %)(((

1114

AT+MOD=2

1115

1116

Sets the device to working mode 2 (Double DI Counting + DO + RO)

1117

)))

1118

1119

(% class="wikigeneratedid" %)

1120

(% style="color:#037691" %)**Downlink payload**

1121

1122

(% border="2" style="width:500px" %)

1123

|(% style="width:98px" %)**Payload**|(% style="width:400px" %)<prefix><working_mode>

1124

|(% style="width:98px" %)**Parameters**|(% style="width:400px" %)(((

1125

**prefix** : 0x0A

1126

1127

**working_mode** : Working mode, represented by 1 byte in hexadecimal.

1128

)))

1129

|(% style="width:98px" %)**Example**|(% style="width:400px" %)(((

1130

0A **02**

1131

1132

Sets the device to working mode 2 (Double DI Counting + DO + RO)

1133

)))

1134

1135

==== 3.4.2.3 Request an uplink from the device ====

1136

1137

1138

Requests an uplink from LT-22222-L. The content of the uplink payload varies based on the device's current working mode.

1139

1140

(% style="color:#037691" %)**AT command**

1141

1142

There is no AT Command available for this feature.

1143

1144

(% style="color:#037691" %)**Downlink payload**

1145

1146

(% border="2" style="width:500px" %)

1147

|(% style="width:101px" %)**Payload**|(% style="width:397px" %)<prefix>FF

1148

|(% style="width:101px" %)**Parameters**|(% style="width:397px" %)**prefix** : 0x08

1149

|(% style="width:101px" %)**Example**|(% style="width:397px" %)(((

1150

08 **FF**

1151

1152

Requests an uplink from LT-22222-L.

1153

)))

1154

1155

==== 3.4.2.4 Enable/Disable Trigger Mode ====

1156

1157

1158

Enable or disable the trigger mode for the current working mode (see also [[ADDMOD6>>path:#H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29]]).

1159

1160

(% style="color:#037691" %)**AT Command**

1161

1162

(% border="2" style="width:500px" %)

1163

|(% style="width:95px" %)**Command**|(% style="width:403px" %)AT+ADDMOD6=<enable/disable trigger_mode>

1164

|(% style="width:95px" %)**Response**|(% style="width:403px" %)

1165

|(% style="width:95px" %)**Parameters**|(% style="width:403px" %)(((

1166

**enable/disable trigger_mode** :

1167

1168

1 = enable trigger mode

1169

1170

0 = disable trigger mode

1171

)))

1172

|(% style="width:95px" %)**Example**|(% style="width:403px" %)(((

1173

AT+ADDMOD6=1

1174

1175

Enable trigger mode for the current working mode

1176

)))

1177

1178

(% style="color:#037691" %)**Downlink payload**

1179

1180

(% border="2" style="width:500px" %)

1181

|(% style="width:97px" %)**Payload**|(% style="width:401px" %)<prefix><enable/disable trigger_mode>

1182

|(% style="width:97px" %)**Parameters**|(% style="width:401px" %)(((

1183

**prefix** : 0x0A 06 (two bytes in hexadecimal)

1184

1185

**enable/disable trigger_mode** : enable (1) or disable (0), represented by 1 byte in hexadecimal.

1186

)))

1187

|(% style="width:97px" %)**Example**|(% style="width:401px" %)(((

1188

0A 06 **01**

1189

1190

Enable trigger mode for the current working mode

1191

)))

1192

1193

==== 3.4.2.5 Request trigger settings ====

1194

1195

1196

Requests the trigger settings.

1197

1198

(% style="color:#037691" %)**AT Command:**

1199

1200

There is no AT Command available for this feature.

1201

1202

(% style="color:#037691" %)**Downlink Payload**

1203

1204

(% border="2" style="width:500px" %)

1205

|(% style="width:95px" %)**Payload**|(% style="width:403px" %)<prefix>

1206

|(% style="width:95px" %)**Parameters**|(% style="width:403px" %)**prefix **: AB 06 (two bytes in hexadecimal)

1207

|(% style="width:95px" %)**Example**|(% style="width:403px" %)(((

1208

AB 06

1209

1210

Uplink the trigger settings.

1211

)))

1212

1213

==== 3.4.2.6 Enable/Disable DI1/DI2/DI3 as a trigger ====

1214

1215

1216

Enable or disable DI1/DI2/DI3 as a trigger.

1217

1218

(% style="color:#037691" %)**AT Command**

1219

1220

(% border="2" style="width:500px" %)

1221

|(% style="width:98px" %)**Command**|(% style="width:400px" %)AT+DTRI=<DI1_trigger>,<DI2_trigger>

1222

|(% style="width:98px" %)**Response**|(% style="width:400px" %)

1223

|(% style="width:98px" %)**Parameters**|(% style="width:400px" %)(((

1224

**DI1_trigger:**

1225

1226

1 = enable DI1 trigger

1227

1228

0 = disable DI1 trigger

**DI2 _trigger**

1 = enable DI2 trigger

1233

1234

0 = disable DI2 trigger

1235

)))

1236

|(% style="width:98px" %)**Example**|(% style="width:400px" %)(((

1237

AT+DTRI=1,0

1238

1239

Enable DI1 trigger, disable DI2 trigger

1240

)))

1241

1242

(% class="wikigeneratedid" %)

1243

(% style="color:#037691" %)**Downlink Payload**

1244

1245

(% border="2" style="width:500px" %)

1246

|(% style="width:101px" %)**Payload**|(% style="width:397px" %)<prefix><DI1_trigger><DI2_trigger>

1247

|(% style="width:101px" %)**Parameters**|(% style="width:397px" %)(((

1248

**prefix :** AA 02 (two bytes in hexadecimal)

**DI1_trigger:**

1 = enable DI1 trigger, represented by 1 byte in hexadecimal.

1253

1254

0 = disable DI1 trigger, represented by 1 byte in hexadecimal.

**DI2 _trigger**

1 = enable DI2 trigger, represented by 1 byte in hexadecimal.

1259

1260

0 = disable DI2 trigger, represented by 1 byte in hexadecimal.

1261

)))

1262

|(% style="width:101px" %)**Example**|(% style="width:397px" %)(((

1263

AA 02 **01 00**

1264

1265

Enable DI1 trigger, disable DI2 trigger

1266

)))

1267

1268

==== 3.4.2.7 Trigger1 – Set DI1 or DI3 as a trigger ====

1269

1270

1271

Sets DI1 or DI3 (for LT-33222-L) as a trigger.

1272

1273

(% style="color:#037691" %)**AT Command**

1274

1275

(% border="2" style="width:500px" %)

1276

|(% style="width:101px" %)**Command**|(% style="width:397px" %)AT+TRIG1=<interrupt_mode>,<minimum_signal_duration>

1277

|(% style="width:101px" %)**Response**|(% style="width:397px" %)

1278

|(% style="width:101px" %)**Parameters**|(% style="width:397px" %)(((

1279

**interrupt_mode** : 0: falling edge; 1: rising edge, 2: falling and raising edge (for MOD=1).

1280

1281

**minimum_signal_duration** : the **minimum signal duration** required for the DI1 port to recognize a valid trigger.

1282

)))

1283

|(% style="width:101px" %)**Example**|(% style="width:397px" %)(((

1284

AT+TRIG1=1,100

1285

1286

Set the DI1 port to trigger on a rising edge; the valid signal duration is 100 ms.

1287

)))

1288

1289

(% class="wikigeneratedid" %)

1290

(% style="color:#037691" %)**Downlink Payload**

1291

1292

(% border="2" style="width:500px" %)

1293

|(% style="width:101px" %)**Payload**|(% style="width:397px" %)<prefix><interrupt_mode><minimum_signal_duration>

1294

|(% style="width:101px" %)**Parameters**|(% style="width:397px" %)(((

1295

**prefix** : 09 01 (hexadecimal)

1296

1297

**interrupt_mode** : 0: falling edge; 1: rising edge, 2: falling and raising edge (for MOD=1), represented by 1 byte in hexadecimal.

1298

1299

**minimum_signal_duration** : in milliseconds, represented two bytes in hexadecimal.

1300

)))

1301

|(% style="width:101px" %)**Example**|(% style="width:397px" %)(((

1302

09 01 **01 00 64**

1303

1304

Set the DI1 port to trigger on a rising edge; the valid signal duration is 100 ms.

1305

)))

1306

1307

==== 3.4.2.8 Trigger2 – Set DI2 as a trigger ====

1308

1309

1310

Sets DI2 as a trigger.

1311

1312

(% style="color:#037691" %)**AT Command**

1313

1314

(% border="2" style="width:500px" %)

1315

|(% style="width:94px" %)**Command**|(% style="width:404px" %)AT+TRIG2=<interrupt_mode>,<minimum_signal_duration>

1316

|(% style="width:94px" %)**Response**|(% style="width:404px" %)

1317

|(% style="width:94px" %)**Parameters**|(% style="width:404px" %)(((

1318

**interrupt_mode **: 0: falling edge; 1: rising edge, 2: falling and raising edge (for MOD=1).

1319

1320

**minimum_signal_duration** : the **minimum signal duration** required for the DI1 port to recognize a valid trigger.

1321

)))

1322

|(% style="width:94px" %)**Example**|(% style="width:404px" %)(((

1323

AT+TRIG2=0,100

1324

1325

Set the DI1 port to trigger on a falling edge; the valid signal duration is 100 ms.

1326

)))

1327

1328

(% style="color:#037691" %)**Downlink Payload**

1329

1330

(% border="2" style="width:500px" %)

1331

|(% style="width:96px" %)**Payload**|(% style="width:402px" %)<prefix><interrupt_mode><minimum_signal_duration>

1332

|(% style="width:96px" %)**Parameters**|(% style="width:402px" %)(((

1333

**prefix** : 09 02 (hexadecimal)

1334

1335

**interrupt_mode **: 0: falling edge; 1: rising edge, 2: falling and raising edge (for MOD=1), represented by 1 byte in hexadecimal.

1336

1337

**minimum_signal_duration** : in milliseconds, represented two bytes in hexadecimal

1338

)))

1339

|(% style="width:96px" %)**Example**|(% style="width:402px" %)09 02 **00 00 64**

1340

1341

==== 3.4.2.9 Trigger – Set AC (current) as a trigger ====

1342

1343

1344

Sets the current trigger based on the AC port. See also [[trigger mode>>path:#H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29]]

1345

1346

(% style="color:#037691" %)**AT Command**

1347

1348

(% border="2" style="width:500px" %)

1349

|(% style="width:104px" %)**Command**|(% style="width:394px" %)(((

1350

AT+ACLIM=<AC1_LIMIT_LOW>,< AC1_LIMIT_HIGH>,<AC2_LIMIT_LOW>,< AC2_LIMIT_HIGH>

1351

)))

1352

|(% style="width:104px" %)**Response**|(% style="width:394px" %)

1353

|(% style="width:104px" %)**Parameters**|(% style="width:394px" %)(((

1354

**AC1_LIMIT_LOW** : lower limit of the current to be checked

1355

1356

**AC1_LIMIT_HIGH **: higher limit of the current to be checked

1357

1358

**AC2_LIMIT_HIGH **: lower limit of the current to be checked

1359

1360

**AC2_LIMIT_LOW** : higher limit of the current to be checked

1361

)))

1362

|(% style="width:104px" %)**Example**|(% style="width:394px" %)(((

1363

AT+ACLIM=10000,15000,0,0

1364

1365

Triggers an uplink if AC1 current is lower than 10mA or higher than 15mA

1366

)))

1367

|(% style="width:104px" %)Note|(% style="width:394px" %)See also, [[trigger mode>>path:#H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29]]

1368

1369

(% style="color:#037691" %)**Downlink Payload**

1370

1371

(% border="2" style="width:500px" %)

1372

|(% style="width:104px" %)**Payload**|(% style="width:394px" %)<prefix><AC1_LIMIT_LOW>,< AC1_LIMIT_HIGH>,<AC2_LIMIT_LOW>,< AC2_LIMIT_HIGH>

1373

|(% style="width:104px" %)**Parameters**|(% style="width:394px" %)(((

1374

**prefix **: AA 01 (hexadecimal)

1375

1376

**AC1_LIMIT_LOW** : lower limit of the current to be checked, two bytes in hexadecimal

1377

1378

**AC1_LIMIT_HIGH **: higher limit of the current to be checked, two bytes in hexadecimal

1379

1380

**AC2_LIMIT_HIGH **: lower limit of the current to be checked, two bytes in hexadecimal

1381

1382

**AC2_LIMIT_LOW** : higher limit of the current to be checked, two bytes in hexadecimal

1383

)))

1384

|(% style="width:104px" %)**Example**|(% style="width:394px" %)(((

1385

AA 01 **27** **10 3A** **98** 00 00 00 00

1386

1387

Triggers an uplink if AC1 current is lower than 10mA or higher than 15mA. Set all values to zero for AC2 limits because we are only checking AC1 limits.

1388

)))

1389

|(% style="width:104px" %)Note|(% style="width:394px" %)See also, [[trigger mode>>path:#H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29]]

1390

1391

==== 3.4.2.10 Trigger – Set AV (voltage) as trigger ====

1392

1393

1394

Sets the current trigger based on the AV port. See also [[trigger mode>>path:#H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29]]

1395

1396

(% style="color:#037691" %)**AT Command**

1397

1398

(% border="2" style="width:500px" %)

1399

|(% style="width:104px" %)**Command**|(% style="width:387px" %)AT+AVLIM= AV1_LIMIT_LOW>,< AV1_LIMIT_HIGH>,<AV2_LIMIT_LOW>,< AV2_LIMIT_HIGH>

1400

|(% style="width:104px" %)**Response**|(% style="width:387px" %)

1401

|(% style="width:104px" %)**Parameters**|(% style="width:387px" %)(((

1402

**AC1_LIMIT_LOW** : lower limit of the current to be checked

1403

1404

**AC1_LIMIT_HIGH **: higher limit of the current to be checked

1405

1406

**AC2_LIMIT_HIGH **: lower limit of the current to be checked

1407

1408

**AC2_LIMIT_LOW** : higher limit of the current to be checked

1409

)))

1410

|(% style="width:104px" %)**Example**|(% style="width:387px" %)(((

1411

AT+AVLIM=3000,6000,0,2000

1412

1413

Triggers an uplink if AVI1 voltage is lower than 3V or higher than 6V, or if AV2 voltage is higher than 2V

1414

)))

1415

|(% style="width:104px" %)**Note**|(% style="width:387px" %)See also, [[trigger mode>>path:#H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29]]

1416

1417

(% style="color:#037691" %)**Downlink Payload**

1418

1419

(% border="2" style="width:500px" %)

1420

|(% style="width:104px" %)**Payload**|(% style="width:394px" %)<prefix><AV1_LIMIT_LOW>,< AV1_LIMIT_HIGH>,<AV2_LIMIT_LOW>,< AV2_LIMIT_HIGH>

1421

|(% style="width:104px" %)**Parameters**|(% style="width:394px" %)(((

1422

**prefix **: AA 00 (hexadecimal)

1423

1424

**AV1_LIMIT_LOW** : lower limit of the voltage to be checked, two bytes in hexadecimal

1425

1426

**AV1_LIMIT_HIGH **: higher limit of the voltage to be checked, two bytes in hexadecimal

1427

1428

**AV2_LIMIT_HIGH **: lower limit of the voltage to be checked, two bytes in hexadecimal

1429

1430

**AV2_LIMIT_LOW** : higher limit of the voltage to be checked, two bytes in hexadecimal

1431

)))

1432

|(% style="width:104px" %)**Example**|(% style="width:394px" %)(((

1433

AA 00 **0B B8 17 70 00 00 07 D0**

1434

1435

Triggers an uplink if AVI1 voltage is lower than 3V or higher than 6V, or if AV2 voltage is higher than 2V.

1436

)))

1437

|(% style="width:104px" %)**Note**|(% style="width:394px" %)See also, [[trigger mode>>path:#H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29]]

1438

1439

==== 3.4.2.11 Trigger – Set the minimum interval ====

1440

1441

1442

Sets the AV and AC trigger minimum interval. The device won't respond to a second trigger within this set time after the first trigger.

1443

1444

(% style="color:#037691" %)**AT Command**

1445

1446

(% border="2" style="width:500px" %)

1447

|(% style="width:113px" %)**Command**|(% style="width:385px" %)AT+ATDC=<time>

1448

|(% style="width:113px" %)**Response**|(% style="width:385px" %)

1449

|(% style="width:113px" %)**Parameters**|(% style="width:385px" %)(((

1450

**time** : in minutes

1451

)))

1452

|(% style="width:113px" %)**Example**|(% style="width:385px" %)(((

1453

AT+ATDC=5

1454

1455

The device won't respond to the second trigger within 5 minutes after the first trigger.

1456

)))

1457

|(% style="width:113px" %)**Note**|(% style="width:385px" %)(% style="color:red" %)**The time must be greater than 5 minutes.**

1458

1459

(% style="color:#037691" %)**Downlink Payload**

1460

1461

(% border="2" style="width:500px" %)

1462

|(% style="width:112px" %)**Payload**|(% style="width:386px" %)<prefix><time>

1463

|(% style="width:112px" %)**Parameters**|(% style="width:386px" %)(((

1464

**prefix** : AC (hexadecimal)

1465

1466

**time **: in minutes (two bytes in hexadecimal)

1467

)))

1468

|(% style="width:112px" %)**Example**|(% style="width:386px" %)(((

1469

AC **00 05**

1470

1471

The device won't respond to the second trigger within 5 minutes after the first trigger.

1472

)))

1473

|(% style="width:112px" %)**Note**|(% style="width:386px" %)(% style="color:red" %)**The time must be greater than 5 minutes.**

1474

1475

==== 3.4.2.12 DO ~-~- Control Digital Output DO1/DO2/DO3 ====

1476

1477

1478

Controls the digital outputs DO1, DO2, and DO3

1479

1480

(% style="color:#037691" %)**AT Command**

1481

1482

There is no AT Command to control the Digital Output.

1483

1484

1485

(% style="color:#037691" %)**Downlink Payload**

1486

1487

(% border="2" style="width:500px" %)

1488

|(% style="width:115px" %)**Payload**|(% style="width:383px" %)<prefix><DO1><DO2><DO3>

1489

|(% style="width:115px" %)**Parameters**|(% style="width:383px" %)(((

1490

**prefix** : 02 (hexadecimal)

1491

1492

**DOI** : 01: Low, 00: High, 11: No action (1 byte in hex)

1493

1494

**DO2** : 01: Low, 00: High, 11: No action (1 byte in hex)

1495

1496

**DO3 **: 01: Low, 00: High, 11: No action (1 byte in hex)

1497

)))

1498

|(% style="width:115px" %)**Examples**|(% style="width:383px" %)(((

1499

02 **01 00 01**

1500

1501

If there is a load between V+ and DOx, it means DO1 is set to low, DO2 is set to high, and DO3 is set to low.

**More examples:**

(((

01: Low, 00: High, 11: No action

1507

1508

(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:383px" %)

1509

|(% style="background-color:#4f81bd; color:white; width:126px" %)**Downlink Code**|(% style="background-color:#4f81bd; color:white; width:85px" %)**DO1**|(% style="background-color:#4f81bd; color:white; width:86px" %)**DO2**|(% style="background-color:#4f81bd; color:white; width:86px" %)**DO3**

1510

|(% style="width:126px" %)02 01 00 11|(% style="width:85px" %)Low|(% style="width:86px" %)High|(% style="width:86px" %)No Action

1511

|(% style="width:126px" %)02 00 11 01|(% style="width:85px" %)High|(% style="width:86px" %)No Action|(% style="width:86px" %)Low

1512

|(% style="width:126px" %)02 11 01 00|(% style="width:85px" %)No Action|(% style="width:86px" %)Low|(% style="width:86px" %)High

)))

(((

(((

(% style="color:red" %)**Note: For the LT-22222-L, there is no DO3; the last byte can have any value.**

)))

(((

(% style="color:red" %)**The device will upload a packet if downlink code executes successfully.**

)))

)))

)))

==== 3.4.2.13 DO ~-~- Control Digital Output DO1/DO2/DO3 with time control ====

1527

1528

1529

(% style="color:#037691" %)**AT command**

1530

1531

There is no AT command to control the digital output.

1532

1533

1534

(% style="color:#037691" %)**Downlink payload**

1535

1536

(% border="2" style="width:500px" %)

1537

|(% style="width:116px" %)**Prefix**|(% style="width:382px" %)0xA9

1538

|(% style="width:116px" %)**Parameters**|(% style="width:382px" %)(((

1539

**inverter_mode**: 1 byte in hex.

1540

1541

**01:** DO pins revert to their original state after the timeout.

1542

**00:** DO pins switch to an inverted state after the timeout.

1543

1544

1545

**DO1_control_method_and_port_status **- 1 byte in hex

1546

1547

0x01 : DO1 set to low

1548

1549

0x00 : DO1 set to high

0x11 : DO1 NO action

**DO2_control_method_and_port_status** - 1 byte in hex

1555

1556

0x01 : DO2 set to low

1557

1558

0x00 : DO2 set to high

0x11 : DO2 NO action

**DO3_control_method_and_port_status **- 1 byte in hex

1564

1565

0x01 : DO3 set to low

1566

1567

0x00 : DO3 set to high

0x11 : DO3 NO action

**latching_time** : 4 bytes in hex

1573

1574

(% style="color:red" %)**Note: **

1575

1576

Since firmware v1.6.0, the latch time supports 4 bytes or 2 bytes

1577

1578

Before firmware v1.6.0, the latch time only supported 2 bytes.

1579

1580

(% style="color:red" %)**The device will uplink a packet if the downlink code executes successfully.**

1581

)))

1582

|(% style="width:116px" %)**Payload format**|(% style="width:382px" %)<prefix><inverter_mode><DO1_control_method_and_port_status><DO2_control_method_and_port_status><DO2_control_method_and_port_status><latching_time>

1583

|(% style="width:116px" %)**Example**|(% style="width:382px" %)(((

1584

**A9 01 01 01 01 07 D0**

1585

1586

DO1 pin, DO2 pin, and DO3 pin will be set to low, last for 2 seconds, and then revert to their original state.

1587

1588

1589

**A9 01 00 01 11 07 D0**

1590

1591

DO1 pin is set to high, DO2 pin is set to low, and DO3 pin takes no action. This lasts for 2 seconds and then reverts to the original state.

1592

1593

1594

**A9 00 00 00 00 07 D0**

1595

1596

DO1 pin, DO2 pin, and DO3 pin will be set to high, last for 2 seconds, and then all change to low.

1597

1598

1599

**A9 00 11 01 00 07 D0**

1600

1601

DO1 pin takes no action, DO2 pin is set to low, and DO3 pin is set to high. This lasts for 2 seconds, after which the DO1 pin takes no action, the DO2 pin is set to high, and the DO3 pin is set to low.

1602

)))

1603

1604

==== 3.4.2.14 Relay ~-~- Control Relay Output RO1/RO2 ====

1605

1606

1607

(% style="color:#037691" %)**AT Command:**

1608

1609

There is no AT Command to control the Relay Output.

1610

1611

1612

(% style="color:#037691" %)**Downlink Payload**

1613

1614

(% border="2" style="width:500px" %)

1615

|(% style="width:113px" %)**Prefix**|(% style="width:384px" %)0x03

1616

|(% style="width:113px" %)**Parameters**|(% style="width:384px" %)(((

1617

**RO1_status** : 1 byte in hex

00: Close

01: Open

11: No action

**RO2_status** : 1 byte in hex

00: Close

01: Open

11: No action

)))

|(% style="width:113px" %)**Payload format**|(% style="width:384px" %)<prefix><RO1_status><RO2_status>

1635

|(% style="width:113px" %)**Example**|(% style="width:384px" %)(((

1636

(% border="2" %)

1637

|=Payload|=RO1|=RO2

1638

|03 00 11|Open|No action

1639

|03 01 11|Close|No action

1640

|03 11 00|No action|Open

1641

|03 11 01|No action|Close

1642

|03 00 00|Open|Open

1643

|03 01 01|Close|Close

|03 01 00|Close|Open

|03 00 01|Open|Close

(% style="color:red" %)**The device will transmit an uplink packet if the downlink payload is executed successfully.**

1648

)))

1649

1650

==== 3.4.2.15 Relay ~-~- Control Relay Output RO1/RO2 with time control ====

1651

1652

1653

Controls the relay output time.

1654

1655

1656

(% style="color:#037691" %)**AT Command:**

1657

1658

There is no AT Command to control the Relay Output

1659

1660

1661

(% style="color:#037691" %)**Downlink Payload (prefix 0x05):**

1662

1663

(% style="color:blue" %)**0x05 aa bb cc dd ** (%%)~/~/ Sets RO1/RO2 relays with time control

1664

1665

1666

This controls the relay output time and includes 4 bytes:

1667

1668

(% style="color:#4f81bd" %)**First byte **(%%)**:** Type code (0x05)

1669

1670

(% style="color:#4f81bd" %)**Second byte (aa)**(%%): Inverter Mode

1671

1672

01: Relays will change back to their original state after a timeout.

1673

1674

00: Relays will change to the inverter state after a timeout.

1675

1676

1677

(% style="color:#4f81bd" %)**Third byte (bb)**(%%): Control Method and Ports status:

1678

1679

[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20221008095908-1.png?width=564&height=364&rev=1.1||alt="image-20221008095908-1.png" height="364" width="564"]]

1680

1681

1682

(% style="color:#4f81bd" %)**Fourth/Fifth/Sixth/Seventh bytes (cc)**(%%): Latching time. Unit: ms

1683

1684

1685

(% style="color:red" %)**Note:**

1686

1687

Since firmware v1.6.0, the latch time supports both 4 bytes and 2 bytes.

1688

1689

Before firmware v1.6.0, the latch time only supported 2 bytes.

1690

1691

1692

(% style="color:red" %)**The device will uplink a packet if the downlink code executes successfully.**

**Example payload:**

**~1. 05 01 11 07 D0**

1698

1699

Relay1 and Relay2 will be set to NC, lasting 2 seconds, then revert to their original state

1700

1701

**2. 05 01 10 07 D0**

1702

1703

Relay1 will change to NC, Relay2 will change to NO, lasting 2 seconds, and then both will revert to their original state.

1704

1705

**3. 05 00 01 07 D0**

1706

1707

Relay1 will change to NO, Relay2 will change to NC, lasting 2 seconds, then Relay1 will change to NC, and Relay2 will change to NO.

1708

1709

**4. 05 00 00 07 D0**

1710

1711

Relay1 and Relay2 will change to NO, lasting 2 seconds, then both will change to NC.

==== 3.4.2.16 Counting ~-~- Voltage threshold counting ====

1716

1717

1718

When the voltage exceeds the threshold, counting begins. For details, see [[MOD4>>path:#H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting]]

1719

1720

(% style="color:#037691" %)**AT Command**

1721

1722

(% border="2" style="width:500px" %)

1723

|(% style="width:137px" %)**Command**|(% style="width:361px" %)AT+VOLMAX=<voltage>,<logic>

1724

|(% style="width:137px" %)**Response**|(% style="width:361px" %)

1725

|(% style="width:137px" %)**Parameters**|(% style="width:361px" %)(((

1726

**voltage** : voltage threshold in mV

**logic**:

**0** : lower than

**1**: higher than

if you leave the logic parameter blank, it is considered 0

1735

)))

1736

|(% style="width:137px" %)**Examples**|(% style="width:361px" %)(((

1737

AT+VOLMAX=20000

1738

1739

If AVI1 voltage higher than VOLMAX (20000mV =20v), counter increase 1

AT+VOLMAX=20000,0

If AVI1 voltage lower than VOLMAX (20000mV =20v), counter increase 1

AT+VOLMAX=20000,1

If AVI1 voltage higher than VOLMAX (20000mV =20v), counter increase 1

1748

)))

1749

1750

(% style="color:#037691" %)**Downlink Payload**

1751

1752

(% border="2" style="width:500px" %)

1753

|(% style="width:140px" %)**Payload**|(% style="width:358px" %)<prefix><voltage><logic>

1754

|(% style="width:140px" %)**Parameters**|(% style="width:358px" %)(((

1755

**prefix** : A5 (hex)

1756

1757

**voltage** : voltage threshold in mV (2 bytes in hex)

1758

1759

**logic**: (1 byte in hexadecimal)

**0** : lower than

**1**: higher than

if you leave the logic parameter blank, it is considered 1 (higher than)

1766

)))

1767

|(% style="width:140px" %)**Example**|(% style="width:358px" %)(((

1768

A5 **4E 20**

1769

1770

If AVI1 voltage higher than VOLMAX (20000mV =20v), counter increase 1

A5 **4E 20 00**

If AVI1 voltage lower than VOLMAX (20000mV =20v), counter increase 1

A5 **4E 20 01**

If AVI1 voltage higher than VOLMAX (20000mV =20v), counter increase 1

1779

)))

1780

1781

==== 3.4.2.17 Counting ~-~- Pre-configure the Count Number ====

1782

1783

1784

This command allows users to pre-configure specific count numbers for various counting parameters such as Count1, Count2, or AVI1 Count. Use the AT command to set the desired count number for each configuration.

1785

1786

(% style="color:#037691" %)**AT Command**

1787

1788

(% border="2" style="width:500px" %)

1789

|(% style="width:134px" %)**Command**|(% style="width:364px" %)AT+SETCNT=<counting_parameter>,<number>

1790

|(% style="width:134px" %)**Response**|(% style="width:364px" %)

1791

|(% style="width:134px" %)**Parameters**|(% style="width:364px" %)(((

1792

**counting_parameter** :

1: COUNT1

2: COUNT2

3: AVI1 Count

**number** : Start number

1801

)))

1802

|(% style="width:134px" %)**Example**|(% style="width:364px" %)(((

1803

AT+SETCNT=1,10

1804

1805

Sets the COUNT1 to 10.

1806

)))

1807

1808

(% style="color:#037691" %)**Downlink Payload**

1809

1810

(% border="2" style="width:500px" %)

1811

|(% style="width:135px" %)**Payload**|(% style="width:363px" %)<prefix><counting_parameter><number>

1812

|(% style="width:135px" %)**Parameters**|(% style="width:363px" %)(((

1813

prefix : A8 (hex)

1814

1815

**counting_parameter** : (1 byte in hexadecimal)

1: COUNT1

2: COUNT2

3: AVI1 Count

**number** : Start number, 4 bytes in hexadecimal

1824

)))

1825

|(% style="width:135px" %)**Example**|(% style="width:363px" %)(((

1826

A8 **01 00 00 00 0A**

1827

1828

Sets the COUNT1 to 10.

1829

)))

1830

1831

==== 3.4.2.18 Counting ~-~- Clear Counting ====

1832

1833

1834

This command clears the counting in counting mode.

1835

1836

(% style="color:#037691" %)**AT Command**

1837

1838

(% border="2" style="width:500px" %)

1839

|(% style="width:142px" %)**Command**|(% style="width:356px" %)AT+CLRCOUNT

1840

|(% style="width:142px" %)**Response**|(% style="width:356px" %)-

1841

1842

(% style="color:#037691" %)**Downlink Payload**

1843

1844

(% border="2" style="width:500px" %)

1845

|(% style="width:141px" %)**Payload**|(% style="width:357px" %)<prefix><clear?>

1846

|(% style="width:141px" %)**Parameters**|(% style="width:357px" %)(((

prefix : A6 (hex)

clear? : 01 (hex)

)))

|(% style="width:141px" %)**Example**|(% style="width:357px" %)A6 **01**

1852

1853

==== 3.4.2.19 Counting ~-~- Set Saving Interval for 'Counting Result' ====

1854

1855

1856

This command allows you to configure the device to save its counting result to internal flash memory at specified intervals. By setting a save time, the device will periodically store the counting data to prevent loss in case of power failure. The save interval can be adjusted to suit your requirements, with a minimum value of 30 seconds.

1857

1858

(% style="color:#037691" %)**AT Command**

1859

1860

(% border="2" style="width:500px" %)

1861

|(% style="width:124px" %)**Command**|(% style="width:374px" %)AT+COUTIME=<time>

1862

|(% style="width:124px" %)**Response**|(% style="width:374px" %)

1863

|(% style="width:124px" %)**Parameters**|(% style="width:374px" %)time : seconds (0 to 16777215)

1864

|(% style="width:124px" %)**Example**|(% style="width:374px" %)(((

1865

AT+COUTIME=60

1866

1867

Sets the device to save its counting results to the memory every 60 seconds.

1868

)))

1869

1870

(% style="color:#037691" %)**Downlink Payload**

1871

1872

(% border="2" style="width:500px" %)

1873

|(% style="width:123px" %)**Payload**|(% style="width:375px" %)<prefix><time>

1874

|(% style="width:123px" %)**Parameters**|(% style="width:375px" %)(((

1875

prefix : A7

1876

1877

time : seconds, 3 bytes in hexadecimal

1878

)))

1879

|(% style="width:123px" %)**Example**|(% style="width:375px" %)(((

1880

A7 **00 00 3C**

1881

1882

Sets the device to save its counting results to the memory every 60 seconds.

1883

)))

1884

1885

==== 3.4.2.20 Reset saved RO and DO states ====

1886

1887

1888

This command allows you to reset the saved relay output (RO) and digital output (DO) states when the device joins the network. By configuring this setting, you can control whether the device should retain or reset the relay states after a reset and rejoin to the network.

1889

1890

(% style="color:#037691" %)**AT Command**

1891

1892

(% border="2" style="width:500px" %)

1893

|(% style="width:127px" %)**Command**|(% style="width:371px" %)AT+RODORESET=<state>

1894

|(% style="width:127px" %)**Response**|(% style="width:371px" %)

1895

|(% style="width:127px" %)**Parameters**|(% style="width:371px" %)(((

1896

**state** :

1897

1898

**0** : RODO will close when the device joins the network. (default)

1899

1900

**1**: After the device is reset, the previously saved RODO state (limited to MOD2 to MOD5) is read, and it will not change when the device reconnects to the network.

1901

)))

1902

|(% style="width:127px" %)**Example**|(% style="width:371px" %)(((

1903

(% style="color:blue" %)**AT+RODORESET=1 **

1904

1905

RODO will close when the device joins the network. (default)

1906

1907

(% style="color:blue" %)**AT+RODORESET=0 **

1908

1909

After the device is reset, the previously saved RODO state (limited to MOD2 to MOD5) is read, and it will not change when the device reconnects to the network.

1910

)))

1911

1912

(% style="color:#037691" %)**Downlink Payload**

1913

1914

(% border="2" style="width:500px" %)

1915

|(% style="width:127px" %)**Payload**|(% style="width:371px" %)<prefix><state>

1916

|(% style="width:127px" %)**Parameters**|(% style="width:371px" %)(((

**prefix** : AD

**state** :

**0** : RODO will close when the device joins the network. (default), represents as 1 byte in hexadecimal.

1922

1923

**1**: After the device is reset, the previously saved RODO state (limited to MOD2 to MOD5) is read, and it will not change when the device reconnects to the network. - represents as 1 byte in hexadecimal

1924

)))

1925

|(% style="width:127px" %)**Example**|(% style="width:371px" %)(((

1926

AD **01**

1927

1928

RODO will close when the device joins the network. (default)

AD **00**

After the device is reset, the previously saved RODO state (limited to MOD2 to MOD5) is read, and it will not change when the device reconnects to the network.

1933

)))

1934

1935

==== 3.4.2.21 Encrypted payload ====

1936

1937

1938

This command allows you to configure whether the device should upload data in an encrypted format or in plaintext. By default, the device encrypts the payload before uploading. You can toggle this setting to either upload encrypted data or transmit it without encryption.

1939

1940

(% style="color:#037691" %)**AT Command:**

1941

1942

(% border="2" style="width:500px" %)

1943

|(% style="width:127px" %)**Command**|(% style="width:371px" %)AT+DECRYPT=<state>

1944

|(% style="width:127px" %)**Response**|(% style="width:371px" %)

1945

|(% style="width:127px" %)**Parameters**|(% style="width:371px" %)(((

1946

**state** :

1947

1948

**1** : The payload is uploaded without encryption

1949

1950

**0** : The payload is encrypted when uploaded (default)

1951

)))

1952

|(% style="width:127px" %)**Example**|(% style="width:371px" %)(((

1953

AT+DECRYPT=1

1954

1955

The payload is uploaded without encryption

AT+DECRYPT=0

The payload is encrypted when uploaded (default)

1960

)))

1961

1962

There is no downlink payload for this configuration.

1963

1964

1965

==== 3.4.2.22 Get sensor value ====

1966

1967

1968

This command allows you to retrieve and optionally uplink sensor readings through the serial port.

1969

1970

(% style="color:#037691" %)**AT Command**

1971

1972

(% border="2" style="width:500px" %)

1973

|(% style="width:127px" %)**Command**|(% style="width:371px" %)AT+GETSENSORVALUE=<state>

1974

|(% style="width:127px" %)**Response**|(% style="width:371px" %)

1975

|(% style="width:127px" %)**Parameters**|(% style="width:371px" %)(((

1976

**state** :

1977

1978

**0 **: Retrieves the current sensor reading via the serial port.

1979

1980

**1 **: Retrieves and uploads the current sensor reading via the serial port.

1981

)))

1982

|(% style="width:127px" %)**Example**|(% style="width:371px" %)(((

1983

AT+GETSENSORVALUE=0

1984

1985

Retrieves the current sensor reading via the serial port.

AT+GETSENSORVALUE=1

Retrieves and uplinks the current sensor reading via the serial port.

1990

)))

1991

1992

There is no downlink payload for this configuration.

1993

1994

1995

==== 3.4.2.23 Resetting the downlink packet count ====

1996

1997

1998

This command manages how the node handles mismatched downlink packet counts. It offers two modes: one disables the reception of further downlink packets if discrepancies occur, while the other resets the downlink packet count to align with the server, ensuring continued communication.

1999

2000

(% style="color:#037691" %)**AT Command**

2001

2002

(% border="2" style="width:500px" %)

2003

|(% style="width:130px" %)**Command**|(% style="width:368px" %)AT+DISFCNTCHECK=<state>

2004

|(% style="width:130px" %)**Response**|(% style="width:368px" %)(((

2005

2006

)))

2007

|(% style="width:130px" %)**Parameters**|(% style="width:368px" %)(((

2008

**state **:

2009

2010

**0** : When the downlink packet count sent by the server is less than the node's downlink packet count or exceeds 16,384, the node stops receiving further downlink packets (default).

2011

2012

2013

**1** : When the downlink packet count sent by the server is less than the node's downlink packet count or exceeds 16,384, the node resets its downlink packet count to match the server's, ensuring consistency.

2014

)))

2015

|(% style="width:130px" %)**Example**|(% style="width:368px" %)(((

2016

AT+DISFCNTCHECK=0

2017

2018

When the downlink packet count sent by the server is less than the node's downlink packet count or exceeds 16,384, the node stops receiving further downlink packets (default).

AT+DISFCNTCHECK=1

When the downlink packet count sent by the server is less than the node's downlink packet count or exceeds 16,384, the node resets its downlink packet count to match the server's, ensuring consistency.

2023

)))

2024

2025

There is no downlink payload for this configuration.

2026

2027

2028

==== 3.4.2.24 When the limit bytes are exceeded, upload in batches ====

2029

2030

2031

This command controls the behavior of the node when the combined size of the MAC commands (MACANS) from the server and the payload exceed the allowed byte limit for the current data rate (DR). The command provides two modes: one enables splitting the data into batches to ensure compliance with the byte limit, while the other prioritizes the payload and ignores the MACANS in cases of overflow.

2032

2033

(% style="color:#037691" %)**AT Command**

2034

2035

(% border="2" style="width:500px" %)

2036

|(% style="width:127px" %)**Command**|(% style="width:371px" %)AT+DISMACANS=<state>

2037

|(% style="width:127px" %)**Response**|(% style="width:371px" %)

2038

|(% style="width:127px" %)**Parameters**|(% style="width:371px" %)(((

2039

**state** :

2040

2041

**0** : When the combined size of the MACANS from the server and the payload exceeds the byte limit (11 bytes for DR0 of US915, DR2 of AS923, DR2 of AU915), the node sends a packet with a payload of 00 and a port of 4. (default)

2042

2043

**1** : When the combined size of the MACANS from the server and the payload exceeds the byte limit for the current DR, the node ignores the MACANS and only uploads the payload.

2044

)))

2045

|(% style="width:127px" %)**Example**|(% style="width:371px" %)(((

2046

AT+DISMACANS=0

2047

2048

When the combined size of the MACANS from the server and the payload exceeds the byte limit (11 bytes for DR0 of US915, DR2 of AS923, DR2 of AU915), the node sends a packet with a payload of 00 and a port of 4. (default)

AT+DISMACANS=1

When the combined size of the MACANS from the server and the payload exceeds the byte limit for the current DR, the node ignores the MACANS and only uploads the payload.

2053

)))

2054

2055

(% style="color:#037691" %)**Downlink Payload**

2056

2057

(% border="2" style="width:500px" %)

2058

|(% style="width:126px" %)**Payload**|(% style="width:372px" %)<prefix><state>

2059

|(% style="width:126px" %)**Parameters**|(% style="width:372px" %)(((

2060

**prefix** : 21

2061

2062

**state** : (2 bytes in hexadecimal)

2063

2064

**0** : When the combined size of the MACANS from the server and the payload exceeds the byte limit (11 bytes for DR0 of US915, DR2 of AS923, DR2 of AU915), the node sends a packet with a payload of 00 and a port of 4. (default)

2065

2066

**1 **: When the combined size of the MACANS from the server and the payload exceeds the byte limit for the current DR, the node ignores the MACANS and only uploads the payload.

2067

)))

2068

|(% style="width:126px" %)**Example**|(% style="width:372px" %)(((

21 **00 01**

Set DISMACANS=1

)))

==== 3.4.2.25 Copy downlink to uplink ====

2075

2076

2077

This command enables the device to immediately uplink the payload of a received downlink packet back to the server. The command allows for quick data replication from downlink to uplink, with a fixed port number of 100.

2078

2079

(% style="color:#037691" %)**AT Command**(%%)**:**

2080

2081

(% style="color:blue" %)**AT+RPL=5** (%%) ~/~/ After receiving a downlink payload from the server, the device will immediately uplink the payload back to the server using port number 100.

2082

2083

Example：**aa xx xx xx xx** ~/~/ **aa** indicates whether the configuration has changed: **00** means YES, and **01** means NO. **xx xx xx xx** are the bytes uplinked back.

2084

2085

2086

[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220823173747-6.png?width=1124&height=165&rev=1.1||alt="image-20220823173747-6.png"]]

2087

2088

For example, sending 11 22 33 44 55 66 77 will return invalid configuration 00 11 22 33 44 55 66 77.

2089

2090

[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220823173833-7.png?width=1124&height=149&rev=1.1||alt="image-20220823173833-7.png"]]

2091

2092

For example, if 01 00 02 58 is issued, a valid configuration of 01 01 00 02 58 will be returned.

2093

2094

2095

(% style="color:#037691" %)**Downlink Payload**(%%)**:**

2096

2097

There is no downlink option available for this feature.

2098

2099

2100

==== 3.4.2.26 Query firmware version, frequency band, subband, and TDC time ====

2101

2102

2103

This command is used to query key information about the device, including its firmware version, frequency band, subband, and TDC time. By sending the specified payload as a downlink, the server can retrieve this essential data from the device.

2104

2105

* (((

2106

(% style="color:#037691" %)**Downlink Payload**(%%)**:**

2107

2108

(% style="color:blue" %)**26 01 ** (%%) ~/~/ The downlink payload 26 01 is used to query the device's firmware version, frequency band, subband, and TDC time.

)))

**Example：**

[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220823173929-8.png?width=1205&height=76&rev=1.1||alt="image-20220823173929-8.png"]]

2116

2117

2118

== 3.5 Integrating with ThingsEye.io ==

2119

2120

2121

The Things Stack application supports integration with ThingsEye.io. Once integrated, ThingsEye.io acts as an MQTT client for The Things Stack MQTT broker, allowing it to subscribe to upstream traffic and publish downlink traffic.

2122

2123

2124

=== 3.5.1 Configuring The Things Stack ===

2125

2126

2127

We use The Things Stack Sandbox in this example:

2128

2129

* In **The Things Stack Sandbox**, go to the **Application **for the LT-22222-L you added.

2130

* Select **MQTT** under **Integrations** in the left menu.

2131

* In the **Connection information **section, under **Connection credentials**, The Things Stack displays an auto-generated **username**. You can use it or provide a new one.

2132

* Click the **Generate new API key** button to generate a password. You can view it by clicking on the **visibility toggle/eye** icon. The API key works as the password.

2133

2134

(% class="box infomessage" %)

2135

(((

2136

The username and password (API key) you created here are required in the next section.

2137

)))

2138

2139

[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/tts-mqtt-integration.png?rev=1.1||alt="tts-mqtt-integration.png"]]

2140

2141

2142

=== 3.5.2 Configuring ThingsEye.io ===

2143

2144

2145

The ThingsEye.io IoT platform is not open for self-registration at the moment. If you are interested in testing the platform, please send your project information to admin@thingseye.io, and we will create an account for you.

2146

2147

* Login to your [[ThingsEye.io >>url:https://thingseye.io]]account.

2148

* Under the **Integrations center**, click **Integrations**.

2149

* Click the **Add integration** button (the button with the **+** symbol).

2150

2151

[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/thingseye-io-step-1.png?rev=1.2||alt="thingseye-io-step-1.png"]]

2152

2153

2154

On the **Add integration** window, configure the following:

**Basic settings:**

* Select **The Things Stack Community** from the **Integration type** list.

2159

* Enter a suitable name for your integration in the **Name **text** **box or keep the default name.

2160

* Ensure the following options are turned on.

2161

** Enable integration

2162

** Debug mode

2163

** Allow creating devices or assets

2164

* Click the **Next** button. you will be navigated to the **Uplink data converter** tab.

2165

2166

[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/thingseye-io-step-2.png?rev=1.1||alt="thingseye-io-step-2.png"]]

2167

2168

2169

**Uplink data converter:**

2170

2171

* Click the **Create new** button if it is not selected by default.

2172

* Enter a suitable name for the uplink data converter in the **Name **text** **box or keep the default name.

2173

* Click the **JavaScript** button.

2174

* Paste the uplink decoder function into the text area (first, delete the default code). The demo uplink decoder function can be found [[here>>url:https://raw.githubusercontent.com/ThingsEye-io/te-platform/refs/heads/main/Data%20Converters/The_Things_Network_MQTT_Uplink_Converter.js]].

2175

* Click the **Next** button. You will be navigated to the **Downlink data converter **tab.

2176

2177

[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/thingseye-io-step-3.png?rev=1.1||alt="thingseye-io-step-3.png"]]

2178

2179

2180

**Downlink data converter (this is an optional step):**

2181

2182

* Click the **Create new** button if it is not selected by default.

2183

* Enter a suitable name for the downlink data converter in the **Name **text** **box or keep the default name.

2184

* Click the **JavaScript** button.

2185

* Paste the downlink decoder function into the text area (first, delete the default code). The demo downlink decoder function can be found [[here>>url:https://raw.githubusercontent.com/ThingsEye-io/te-platform/refs/heads/main/Data%20Converters/The_Things_Network_MQTT_Downlink_Converter.js]].

2186

* Click the **Next** button. You will be navigated to the **Connection** tab.

2187

2188

[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/thingseye-io-step-4.png?rev=1.1||alt="thingseye-io-step-4.png"]]

**Connection:**

* Choose **Region** from the **Host type**.

2194

* Enter the **cluster** of your **The Things Stack** in the **Region** textbox. You can find the cluster in the url (e.g., https:~/~/**eu1**.cloud.thethings.network/...).

2195

* Enter the **Username** and **Password** of the MQTT integration in the **Credentials** section. The **username **and **password **can be found on the MQTT integration page of your The Things Stack account (see **3.5.1 Configuring The Things Stack**).

2196

* Click the **Check connection** button to test the connection. If the connection is successful, you will see the message saying **Connected**.

2197

2198

[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/message-1.png?rev=1.1||alt="message-1.png"]]

2199

2200

2201

* Click the **Add** button.

2202

2203

[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/thingseye-io-step-5.png?rev=1.1||alt="thingseye-io-step-5.png"]]

2204

2205

2206

Your integration has been added to the** Integrations** list and will be displayed on the **Integrations** page. Check whether the status is shown as **Active**. If not, review your configuration settings and correct any errors.

2207

2208

[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/thingseye.io_integrationsCenter_integrations.png?rev=1.2||alt="thingseye.io_integrationsCenter_integrations.png"]]

2209

2210

2211

==== 3.5.2.1 Viewing integration details ====

2212

2213

2214

Click on your integration from the list. The **Integration details** window will appear with the **Details **tab selected. The **Details **tab shows all the settings you have provided for this integration.

2215

2216

[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/integration-details.png?rev=1.1||alt="integration-details.png"]]

2217

2218

2219

If you want to edit the settings you have provided, click on the **Toggle edit mode** button. Once you have done click on the **Apply changes **button.

2220

2221

(% class="box infomessage" %)

2222

(((

2223

See also [[ThingsEye documentation>>url:https://wiki.thingseye.io/xwiki/bin/view/Main/]].

)))

==== 3.5.2.2 Viewing events ====

2228

2229

2230

The **Events **tab displays all the uplink messages from the LT-22222-L.

2231

2232

* Select **Debug **from the **Event type** dropdown.

2233

* Select the** time frame** from the **time window**.

2234

2235

[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/thingseye-events.png?rev=1.1||alt="thingseye-events.png"]]

2236

2237

2238

* To view the **JSON payload** of a message, click on the **three dots (...)** in the **Message** column of the desired message.

2239

2240

[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/thingseye-json.png?rev=1.3||alt="thingseye-json.png"]]

2241

2242

2243

==== 3.5.2.3 Deleting an integration ====

2244

2245

2246

If you want to delete an integration, click the **Delete integratio**n button on the Integrations page.

2247

2248

2249

==== 3.5.2.4 Viewing sensor data on a dashboard ====

2250

2251

2252

You can create a dashboard with ThingsEye to visualize the sensor data coming from the LT-22222-L. The following image shows a dashboard created for the LT-22222-L. See **Creating a dashboard** in ThingsEye documentation for more information.

2253

2254

[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/lt-22222-l-dashboard.png?rev=1.1||alt="lt-22222-l-dashboard.png"]]

2255

2256

2257

== 3.6 Interface Details ==

2258

2259

=== 3.6.1 Digital Input Ports: DI1/DI2/DI3 (For LT-33222-L, Low Active) ===

2260

2261

2262

Supports** NPN-type **sensors.

2263

2264

[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/1653356991268-289.png?rev=1.1||alt="1653356991268-289.png"]]

2265

2266

2267

=== 3.6.2 Digital Input Ports: DI1/DI2 ===

(((

The DI ports of the LT-22222-L can support **NPN**, **PNP**, or **dry contact** output sensors.

)))

(((

(((

The part of the internal circuit of the LT-22222-L shown below includes the NEC2501 photocoupler. The active current from NEC2501 pin 1 to pin 2 is 1 mA, with a maximum allowable current of 50 mA. When active current flows from NEC2501 pin 1 to pin 2, the DI becomes active HIGH and the DI LED status changes.

)))

)))

[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/1653357170703-587.png?rev=1.1||alt="1653357170703-587.png"]]

(((

(((

(% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant-alternates:normal; font-variant-east-asian:normal; font-variant-ligatures:normal; font-variant-numeric:normal; font-variant-position:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %)When connecting a device to the DI port, both DI1+ and DI1- must be connected.

)))

)))

(((

)))

(((

(% style="color:#0000ff" %)**Example 1**(%%): Connecting to a low-active sensor.

)))

(((

This type of sensor outputs a low (GND) signal when active.

)))

* (((

Connect the sensor's output to DI1-

2304

)))

2305

* (((

2306

Connect the sensor's VCC to DI1+.

)))

(((

When the sensor is active, the current between NEC2501 pin 1 and pin 2 will be：

)))

(((

[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/1653968155772-850.png?width=19&height=23&rev=1.1||alt="1653968155772-850.png" height="23" width="19"]]**= DI1**+** / 1K.**

)))

(((

For example, if** DI1+ **= **12V**, the resulting current is [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/1653968155772-850.png?width=19&height=23&rev=1.1||alt="1653968155772-850.png" height="23" width="19"]]= 12mA. Therefore, the LT-22222-L will be able to detect this active signal.

)))

(((

)))

(((

(% style="color:#0000ff" %)**Example 2**(%%): Connecting to a high-active sensor.

)))

(((

This type of sensor outputs a high signal (e.g., 24V) when active.

)))

* (((

Connect the sensor's output to DI1+

2335

)))

2336

* (((

2337

Connect the sensor's GND DI1-.

)))

(((

When the sensor is active, the current between NEC2501 pin1 and pin2 will be:

)))

(((

[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/1653968155772-850.png?width=19&height=23&rev=1.1||alt="1653968155772-850.png" height="23" width="19"]]**= DI1+ / 1K.**

)))

(((

If **DI1+ = 24V**, the resulting current[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/1653968155772-850.png?width=19&height=23&rev=1.1||alt="1653968155772-850.png" height="23" width="19"]] is 24mA, Therefore, the LT-22222-L will detect this high-active signal.

)))

(((

)))

(((

(% style="color:#0000ff" %)**Example 3**(%%): Connecting to a 220V high-active sensor.

)))

(((

Assume that you want to monitor an active signal higher than 220V without damaging the photocoupler

)))

* (((

Connect the sensor's output to DI1+ with a 50K resistor in series.

2366

)))

2367

* (((

2368

Connect the sensor's GND DI1-.

)))

(((

When the sensor is active, the current between NEC2501 pin1 and pin2 will be:

)))

(((

[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/1653968155772-850.png?width=19&height=23&rev=1.1||alt="1653968155772-850.png" height="23" width="19"]]**= DI1+ / 51K.**

)))

(((

If the sensor output is 220V, then [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/1653968155772-850.png?width=19&height=23&rev=1.1||alt="1653968155772-850.png" height="23" width="19"]](% id="cke_bm_243359S" style="display:none" wfd-invisible="true" %)[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]](%%) = DI1+ / 51K = 4.3mA. Therefore, the LT-22222-L will be able to safely detect this high-active signal.

)))

(% style="color:blue" %)**Example 4**(%%): Connecting to a Dry Contact sensor

2385

2386

From the DI port circuit above, activating the photocoupler requires a voltage difference between the DI+ and DI- ports. However, the Dry Contact sensor is a passive component and cannot provide this voltage difference on its own.

2387

2388

To detect a Dry Contact, you can supply a power source to one of the pins of the Dry Contact. A reference circuit diagram is shown below.

2389

2390

[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20230616235145-1.png?rev=1.1||alt="image-20230616235145-1.png"]]

2391

2392

(% style="color:blue" %)**Example 5**(%%): Connecting to an Open Collector

2393

2394

[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20240219115718-1.png?rev=1.1||alt="image-20240219115718-1.png"]]

2395

2396

2397

=== 3.6.3 Digital Output Ports: DO1/DO2 ===

2398

2399

2400

(% style="color:blue" %)**NPN output**(%%): GND or Float. The maximum voltage that can be applied to the output pin is 36V.

2401

2402

(% style="color:red" %)**Note: The DO pins will float when the device is powered off.**

2403

2404

[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/1653357531600-905.png?rev=1.1||alt="1653357531600-905.png"]]

2405

2406

2407

=== 3.6.4 Analog Input Interfaces ===

2408

2409

2410

The analog input interface is shown below. The LT-22222-L will measure the IN2 voltage to calculate the current passing through the load. The formula is:

2411

2412

2413

(% style="color:blue" %)**AC2 = (IN2 voltage )/12**

2414

2415

[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/1653357592296-182.png?rev=1.1||alt="1653357592296-182.png"]]

2416

2417

Example: Connecting a 4~~20mA sensor

2418

2419

We will use the wind speed sensor as an example for reference only.

2420

2421

2422

(% style="color:blue" %)**Specifications of the wind speed sensor:**

2423

2424

(% style="color:red" %)**Red: 12~~24V**

2425

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(% style="color:#ffc000" %)**Yellow: 4~~20mA**

**Black: GND**

**Connection diagram:**

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[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/1653357640609-758.png?rev=1.1||alt="1653357640609-758.png"]]

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[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/1653357648330-671.png?width=733&height=155&rev=1.1||alt="1653357648330-671.png" height="155" width="733"]]

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Example: Connecting to a regulated power supply to measure voltage

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[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20230608101532-1.png?width=447&height=606&rev=1.1||alt="image-20230608101532-1.png" height="606" width="447"]]

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[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20230608101608-2.jpeg?width=284&height=379&rev=1.1||alt="image-20230608101608-2.jpeg" height="379" width="284"]]

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[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20230608101722-3.png?width=1139&height=102&rev=1.1||alt="image-20230608101722-3.png" height="102" width="1139"]]

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(% style="color:blue; font-weight:bold" %)**Specifications of the regulated power supply**(% style="color:blue" %)**:**

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(% style="color:red" %)**Red: 12~~24v**

**Black: GND**

=== 3.6.5 Relay Output ===

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The LT-22222-L has two relay interfaces, RO1 and RO2, each using two pins of the screw terminal (ROx-1 and ROx-2 where x is the port number, 1 or 2). You can connect a device's power line in series with one of the relay interfaces (e.g., RO1-1 and RO1-2 screw terminals). See the example below:

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(% style="color:red" %)**Note:**(%%) The ROx pins will be in the Open (NO) state when the LT-22222-L is powered off.

2460

)))

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[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524100215-9.png?rev=1.1||alt="image-20220524100215-9.png"]]

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[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524100215-10.png?width=723&height=382&rev=1.1||alt="image-20220524100215-10.png" height="382" width="723"]]

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== 3.7 LED Indicators ==

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The table below lists the behaviour of LED indicators for each port function.

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(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)

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|(% style="background-color:#4f81bd; color:white; width:50px" %)**LEDs**|(% style="background-color:#4f81bd; color:white; width:460px" %)**Feature**

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|**PWR**|Always on when there is power

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|**TX**|(((

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(((

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Device booting: TX blinks 5 times.

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Successful network joins: TX remains ON for 5 seconds.

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Transmit a LoRa packet: TX blinks once

2487

)))

2488

)))

2489

|**RX**|RX blinks once when a packet is received.

2490

|**DO1**|For LT-22222-L: ON when DO1 is low, OFF when DO1 is high

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|**DO2**|For LT-22222-L: ON when DO2 is low, OFF when DO2 is high

2492

|**DI1**|(((

2493

For LT-22222-L: ON when DI1 is high, OFF when DI1 is low

2494

)))

2495

|**DI2**|(((

2496

For LT-22222-L: ON when DI2 is high, OFF when DI2 is low

2497

)))

2498

|**RO1**|For LT-22222-L: ON when RO1 is closed, OFF when RO1 is open

2499

|**RO2**|For LT-22222-L: ON when RO2 is closed, OFF when RO2 is open

2500

2501

= 4. Using AT Commands =

2502

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2504

The LT-22222-L supports programming using AT Commands.

2505

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== 4.1 Connecting the LT-22222-L to a PC ==

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You can use a USB-to-TTL adapter/converter along with a 3.5mm Program Cable to connect the LT-22222-L to a PC, as shown below.

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[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/usb-ttl-audio-jack-connection.jpg?rev=1.1||alt="usb-ttl-audio-jack-connection.jpg"]]

)))

(((

On the PC, you need to set the (% style="color:#4f81bd" %)**serial tool **(%%)(such as [[PuTTY>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]] or [[SecureCRT>>url:https://www.vandyke.com/cgi-bin/releases.php?product=securecrt]]) to a baud rate of (% style="color:green" %)**9600**(%%) to access the serial console of LT-22222-L. Access to AT commands is disabled by default, and a password (default: (% style="color:green" %)**123456**)(%%) must be entered to enable AT command access, as shown below:

2520

)))

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[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/1653358355238-883.png?rev=1.1||alt="1653358355238-883.png"]]

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== 4.2 LT-22222-L related AT commands ==

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The following is the list of all the AT commands related to the LT-22222-L, except for those used for switching between working modes.

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* **##AT##+<CMD>?** : Help on <CMD>

2535

* **##AT##+<CMD>** : Run <CMD>

2536

* **##AT##+<CMD>=<value>** : Set the value

2537

* **##AT##+<CMD>=?** : Get the value

2538

* ##**ATZ**##: Trigger a reset of the MCU

2539

* ##**AT+FDR**##: Reset Parameters to factory default, reserve keys

2540

* **##AT+DEUI##**: Get or set the Device EUI (DevEUI)

2541

* **##AT+DADDR##**: Get or set the Device Address (DevAddr)

2542

* **##AT+APPKEY##**: Get or set the Application Key (AppKey)

2543

* ##**AT+NWKSKEY**##: Get or set the Network Session Key (NwkSKey)

2544

* **##AT+APPSKEY##**: Get or set the Application Session Key (AppSKey)

2545

* **##AT+APPEUI##**: Get or set the Application EUI (AppEUI)

2546

* **##AT+ADR##**: Get or set the Adaptive Data Rate setting. (0: OFF, 1: ON)

2547

* ##**AT+TXP**##: Get or set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Specification)

2548

* **##AT+DR##**: Get or set the Data Rate. (0-7 corresponding to DR_X)

2549

* **##AT+DCS##**: Get or set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing

2550

* ##**AT+PNM**##: Get or set the public network mode. (0: off, 1: on)

2551

* ##**AT+RX2FQ**##: Get or set the Rx2 window frequency

2552

* ##**AT+RX2DR**##: Get or set the Rx2 window data rate (0-7 corresponding to DR_X)

2553

* ##**AT+RX1DL**##: Get or set the delay between the end of the Tx and the Rx Window 1 in ms

2554

* ##**AT+RX2DL**##: Get or set the delay between the end of the Tx and the Rx Window 2 in ms

2555

* ##**AT+JN1DL**##: Get or set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms

2556

* ##**AT+JN2DL**##: Get or set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms

2557

* ##**AT+NJM**##: Get or set the Network Join Mode. (0: ABP, 1: OTAA)

2558

* ##**AT+NWKID**##: Get or set the Network ID

2559

* ##**AT+FCU**##: Get or set the Frame Counter Uplink (FCntUp)

2560

* ##**AT+FCD**##: Get or set the Frame Counter Downlink (FCntDown)

2561

* ##**AT+CLASS**##: Get or set the Device Class

2562

* ##**AT+JOIN**##: Join Network

2563

* ##**AT+NJS**##: Get OTAA Join Status

2564

* ##**AT+SENDB**##: Send hexadecimal data along with the application port

2565

* ##**AT+SEND**##: Send text data along with the application port

2566

* ##**AT+RECVB**##: Print the last received data in binary format (with hexadecimal values)

2567

* ##**AT+RECV**##: Print the last received data in raw format

2568

* ##**AT+VER**##: Get the current image version and Frequency Band

2569

* ##**AT+CFM**##: Get or Set the confirmation mode (0-1)

2570

* ##**AT+CFS**##: Get confirmation status of the last AT+SEND (0-1)

2571

* ##**AT+SNR**##: Get the SNR of the last received packet

2572

* ##**AT+RSSI**##: Get the RSSI of the last received packet

2573

* ##**AT+TDC**##: Get or set the application data transmission interval in ms

2574

* ##**AT+PORT**##: Get or set the application port

2575

* ##**AT+DISAT**##: Disable AT commands

2576

* ##**AT+PWORD**##: Set password, max 9 digits

2577

* ##**AT+CHS**##: Get or set the Frequency (Unit: Hz) for Single Channel Mode

2578

* ##**AT+CHE**##: Get or set eight channels mode, Only for US915, AU915, CN470

2579

* ##**AT+CFG**##: Print all settings

)))

== 4.2 Common AT Command Sequence ==

2584

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=== 4.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===

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(((

(% style="color:blue" %)**If the device has not yet joined the network:**

)))

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(((

(% style="background-color:#dcdcdc" %)##**123456 ~/~/Enter the password to enable AT command access**##

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(((

(% style="background-color:#dcdcdc" %)##**AT+FDR ~/~/Reset parameters to factory default, Reserve keys**##

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(((

(% style="background-color:#dcdcdc" %)##**123456 ~/~/Enter the password to enable AT command access**##

)))

(((

(% style="background-color:#dcdcdc" %)##**AT+NJM=0 ~/~/Set to ABP mode**##

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(% style="background-color:#dcdcdc" %)##**ATZ ~/~/Reset MCU**##

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(((

(% style="color:blue" %)**If the device has already joined the network:**

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(% style="background-color:#dcdcdc" %)##**AT+NJM=0**##

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(% style="background-color:#dcdcdc" %)##**ATZ**##

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=== 4.2.2 Single-channel ABP mode (Use with LG01/LG02) ===

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(((

(% style="background-color:#dcdcdc" %)**123456**(%%) ~/~/ Enter the password to enable AT commands access

)))

)))

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(% style="background-color:#dcdcdc" %)** AT+FDR**(%%) ~/~/ Reset parameters to Factory Default, Reserve keys

)))

(((

(% style="background-color:#dcdcdc" %)** 123456**(%%) ~/~/ Enter the password to enable AT command access

)))

(((

(% style="background-color:#dcdcdc" %)** AT+CLASS=C**(%%) ~/~/ Set to CLASS C mode

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(((

(% style="background-color:#dcdcdc" %)** AT+NJM=0**(%%) ~/~/ Set to ABP mode

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(((

(% style="background-color:#dcdcdc" %) **AT+ADR=0**(%%) ~/~/ Set the Adaptive Data Rate Off

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(% style="background-color:#dcdcdc" %)** AT+DR=5**(%%) ~/~/ Set Data Rate

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(% style="background-color:#dcdcdc" %)** AT+TDC=60000**(%%) ~/~/ Set transmit interval to 60 seconds

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(% style="background-color:#dcdcdc" %)** AT+CHS=868400000**(%%) ~/~/ Set transmit frequency to 868.4 MHz

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(% style="background-color:#dcdcdc" %)** AT+RX2FQ=868400000**(%%) ~/~/ Set RX2 frequency to 868.4 MHz (according to the result from the server)

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(((

(% style="background-color:#dcdcdc" %)** AT+RX2DR=5**(%%)** ** ~/~/ Set RX2 DR to match the downlink DR from the server. See below.

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(% style="background-color:#dcdcdc" %)** AT+DADDR=26 01 1A F1** (%%) ~/~/ Set Device Address. The Device Address can be found in the application on the LoRaWAN NS.

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(% style="background-color:#dcdcdc" %)** ATZ** (%%) ~/~/ Reset MCU

)))

(((

(% style="color:red" %)**Note:**

)))

(((

**~1. Ensure that the device is set to ABP mode in the LoRaWAN Network Server.**

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**2. Verify that the LG01/02 gateway RX frequency matches the AT+CHS setting exactly.**

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2698

**3. Make sure the SF/bandwidth settings in the LG01/LG02 match the settings of AT+DR. Refer to [[this link>>url:https://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.**

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2700

**4. The commands AT+RX2FQ and AT+RX2DR enable downlink functionality. To set the correct parameters, you can check the actual downlink parameters to be used as shown below. Here, RX2FQ should be set to 868400000 and RX2DR should be set to 5.**

)))

(((

[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/1653359097980-169.png?width=729&height=188&rev=1.1||alt="1653359097980-169.png" height="188" width="729"]]

)))

=== 4.2.3 Change to Class A ===

(((

(% style="color:blue" %)**If the sensor has JOINED:**

2713

2714

(% style="background-color:#dcdcdc" %)**AT+CLASS=A**

2715

2716

(% style="background-color:#dcdcdc" %)**ATZ**

)))

= 5. Case Study =

== 5.1 Counting how many objects pass through the flow line ==

2723

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2725

See [[How to set up to setup counting for objects passing through the flow line>>path:/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/How%20to%20set%20up%20to%20count%20objects%20pass%20in%20flow%20line/]].

= 6. FAQ =

This section contains some frequently asked questions, which can help you resolve common issues and find solutions quickly.

2732

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== 6.1 How to update the firmware? ==

2735

2736

2737

Dragino frequently releases firmware updates for the LT-22222-L. Updating your LT-22222-L with the latest firmware version helps to:

2738

2739

* Support new features

2740

* Fix bugs

2741

* Change LoRaWAN frequency bands

2742

2743

You will need the following things before proceeding:

2744

2745

* 3.5mm programming cable (included with the LT-22222-L as an additional accessory)

2746

* USB to TTL adapter/converter

2747

* Download and install the [[STM32 Flash loader>>url:https://www.st.com/content/st_com/en/products/development-tools/software-development-tools/stm32-software-development-tools/stm32-programmers/flasher-stm32.html]]. (replaced by STM32CubeProgrammer)

2748

* Download the latest firmware image from [[LT-22222-L firmware image files>>url:https://www.dropbox.com/sh/g99v0fxcltn9r1y/AACrbrDN0AqLHbBat0ViWx5Da/LT-22222-L/Firmware?dl=0&subfolder_nav_tracking=1]]. Check the file name of the firmware to find the correct region.

2749

2750

(% class="box infomessage" %)

2751

(((

2752

As of this writing, the latest firmware version available for the LT-22222-L is v1.6.1.

2753

)))

2754

2755

Below is the hardware setup for uploading a firmware image to the LT-22222-L:

2756

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[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/usb-ttl-audio-jack-connection.jpg?rev=1.1||alt="usb-ttl-audio-jack-connection.jpg"]]

Start the STM32 Flash Loader and choose the correct COM port to update.

(((

(((

(% style="color:blue" %)**For LT-22222-L**(%%):

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2767

Hold down the **PRO** button, then briefly press the **RST** button. The **DO1** LED will change from OFF to ON. When the **DO1** LED is ON, it indicates that the device is in firmware download mode.

)))

)))

[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524103407-12.png?rev=1.1||alt="image-20220524103407-12.png"]]

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[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524103429-13.png?rev=1.1||alt="image-20220524103429-13.png"]]

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[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524104033-15.png?rev=1.1||alt="image-20220524104033-15.png"]]

2780

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(% style="color:red" %)**Note**(%%): If you have lost the programming cable, you can make one from a 3.5 mm cable. The pin mapping is as follows:

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2784

[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/1653360054704-518.png?width=745&height=186&rev=1.1||alt="1653360054704-518.png" height="186" width="745"]]

(((

(((

== 6.2 How to change the LoRaWAN frequency band/region? ==

)))

)))

(((

You can follow the introductions on [[how to upgrade the image>>path:#H6.1Howtoupdatethefirmware3F]]. When downloading, select the required image file.

)))

(((

== 6.3 How to set up LT-22222-L to work with a Single Channel Gateway, such as LG01/LG02? ==

)))

(((

(((

In this case, you need to set the LT-22222-L to work in ABP mode and transmit on only one frequency.

)))

)))

(((

(((

We assume you have an LG01/LG02 working on the frequency 868400000. Below are the steps.

)))

)))

(((

(% style="color:#0000ff" %)**Step 1**(%%): Log in to The Things Stack Sandbox account and create an ABP device in the application. To do this, use the manual registration option as explained in section 3.2.2.2, //Adding a Device Manually//. Select //Activation by Personalization (ABP)// under Activation Mode. Enter the DevEUI exactly as shown on the registration information sticker, then generate the Device Address, Application Session Key (AppSKey), and Network Session Key (NwkSKey).

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[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/lt-22222-l-abp.png?width=1000&height=686&rev=1.1||alt="lt-22222-l-abp.png" height="686" width="1000"]]

)))

(((

)))

(% class="box warningmessage" %)

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(((

2833

Ensure that the Device Address (DevAddr) and the two keys match between the LT-22222-L and The Things Stack. You can modify them either in The Things Stack or on the LT-22222-L to make them align. In The Things Stack, you can configure the NwkSKey and AppSKey on the settings page, but note that the Device Address is generated by The Things Stack.

)))

(((

(% style="color:blue" %)**Step 2**(%%)**: **(% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant-alternates:normal; font-variant-east-asian:normal; font-variant-ligatures:normal; font-variant-numeric:normal; font-variant-position:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %)Run AT commands to configure the LT-22222-L to operate in single-frequency and ABP mode. The AT commands are as follows:

)))

(((

(% style="background-color:#dcdcdc" %)**123456** (%%) : Enter the password to enable AT access.

2845

2846

(% style="background-color:#dcdcdc" %)**AT+FDR**(%%) : Reset parameters to factory default, keeping keys reserved.

2847

2848

(% style="background-color:#dcdcdc" %)**AT+NJM=0** (%%) : Set to ABP mode.

2849

2850

(% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) : Disable the Adaptive Data Rate (ADR).

2851

2852

(% style="background-color:#dcdcdc" %)**AT+DR=5** (%%) : Set Data Rate (Use AT+DR=3 for the 915 MHz band).

2853

2854

(% style="background-color:#dcdcdc" %)**AT+TDC=60000 **(%%) : Set transmit interval to 60 seconds.

2855

2856

(% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) : Set transmit frequency to 868.4 MHz.

2857

2858

(% style="background-color:#dcdcdc" %)**AT+DADDR=xxxx**(%%) : Set the Device Address (DevAddr)

2859

2860

(% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant-alternates:normal; font-variant-east-asian:normal; font-variant-ligatures:normal; font-variant-numeric:normal; font-variant-position:normal; font-weight:700; text-decoration:none; white-space:pre-wrap" %)**AT+APPKEY=xxxx**(% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant-alternates:normal; font-variant-east-asian:normal; font-variant-ligatures:normal; font-variant-numeric:normal; font-variant-position:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %): Get or set the Application Key (AppKey)

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(% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant-alternates:normal; font-variant-east-asian:normal; font-variant-ligatures:normal; font-variant-numeric:normal; font-variant-position:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %)**AT+NWKSKEY=xxxx**: Get or set the Network Session Key (NwkSKey)

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(% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant-alternates:normal; font-variant-east-asian:normal; font-variant-ligatures:normal; font-variant-numeric:normal; font-variant-position:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %)**AT+APPSKEY=xxxx**: Get or set the Application Session Key (AppSKey)

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(% style="background-color:#dcdcdc" %)**ATZ** (%%) : Reset MCU.

)))

(((

(% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant-alternates:normal; font-variant-east-asian:normal; font-variant-ligatures:normal; font-variant-numeric:normal; font-variant-position:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %)The following figure shows the screenshot of the command set above, issued using a serial tool:

2872

)))

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[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/1653360498588-932.png?width=726&height=485&rev=1.1||alt="1653360498588-932.png" height="485" width="726"]]

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== 6.4 How to change the uplink interval? ==

2878

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2880

Please see this link: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/How%20to%20set%20the%20transmit%20time%20interval/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20set%20the%20transmit%20time%20interval/]]

2881

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2883

== 6.5 Can I see the counting event in the serial output? ==

(((

You can run the AT command **AT+DEBUG** to view the counting event in the serial output. If the firmware is too old and doesn’t support AT+DEBUG, update to the latest firmware first.

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2890

== 6.6 Can I use point-to-point communication with LT-22222-L? ==

2891

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2893

Yes, you can. Please refer to the [[Point-to-Point Communication of LT-22222-L>>url:https://wiki.dragino.com/xwiki/bin/view/Main/%20Point%20to%20Point%20Communication%20of%20LT-22222-L/]] page. The firmware that supports point-to-point communication can be found [[here>>url:https://github.com/dragino/LT-22222-L/releases]].

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(((

== 6.7 Why does the relay output default to an open relay after the LT-22222-L is powered off? ==

2900

2901

2902

* If the device is not properly shut down and is directly powered off.

2903

* It will default to a power-off state.

2904

* In modes 2 to 5, the DO/RO status and pulse count are saved to flash memory.

2905

* After a restart, the status before the power failure will be read from Flash.

2906

2907

== 6.8 Can I set up LT-22222-L as an NC (Normally Closed) relay? ==

2908

2909

2910

The LT-22222-L's built-in relay is Normally Open (NO). You can use an external relay to achieve a Normally Closed (NC) configuration. The circuit diagram is shown below:

2911

2912

2913

[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20221006170630-1.png?width=945&height=610&rev=1.1||alt="image-20221006170630-1.png" height="610" width="945"]]

2914

2915

2916

== 6.9 Can the LT-22222-L save the RO state? ==

2917

2918

2919

To enable this feature, the firmware version must be 1.6.0 or higher.

2920

2921

2922

== 6.10 Why does the LT-22222-L always report 15.585V when measuring the AVI? ==

2923

2924

2925

It is likely that the GND is not connected during the measurement, or that the wire connected to the GND is loose.

2926

2927

2928

= 7. Troubleshooting =

2929

2930

2931

This section provides some known troubleshooting tips.

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(((

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== 7.1 Downlink isn't working. How can I solve this? ==

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Please refer to this link for debugging instructions: [[LoRaWAN Communication Debug>>path:/xwiki/bin/view/Main/LoRaWAN%20Communication%20Debug/#H5.1Howitwork]]

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== 7.2 Having trouble uploading an image? ==

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Please refer to this link for troubleshooting: [[Firmware Upgrade Instruction>>path:/xwiki/bin/view/Main/Firmware%20Upgrade%20Instruction%20for%20STM32%20base%20products/]]

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== 7.3 Why can't I join TTN in the US915 /AU915 bands? ==

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It might be related to the channel mapping. [[Please refer to this link for details.>>url:https://github.com/dragino/LT-22222-L/releases]]

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== 7.4 Why can the LT-22222-L perform uplink normally, but cannot receive downlink? ==

2974

2975

2976

The FCD count of the gateway is inconsistent with the FCD count of the node, causing the downlink to remain in the queue.

2977

Use this command to synchronize their counts: [[Resets the downlink packet count>>path:#H3.4.2.23Resettingthedownlinkpacketcount]]

2978

2979

2980

= 8. Ordering information =

2981

2982

2983

(% style="color:#4f81bd" %)**LT-22222-L-XXX:**

2984

2985

(% style="color:#4f81bd" %)**XXX:**

2986

2987

* (% style="color:red" %)**EU433**(%%): LT with frequency bands EU433

2988

* (% style="color:red" %)**EU868**(%%): LT with frequency bands EU868

2989

* (% style="color:red" %)**KR920**(%%): LT with frequency bands KR920

2990

* (% style="color:red" %)**CN470**(%%): LT with frequency bands CN470

2991

* (% style="color:red" %)**AS923**(%%): LT with frequency bands AS923

2992

* (% style="color:red" %)**AU915**(%%): LT with frequency bands AU915

2993

* (% style="color:red" %)**US915**(%%): LT with frequency bands US915

2994

* (% style="color:red" %)**IN865**(%%): LT with frequency bands IN865

2995

* (% style="color:red" %)**CN779**(%%): LT with frequency bands CN779

2996

2997

= 9. Package information =

2998

2999

3000

**Package includes**:

3001

3002

* 1 x LT-22222-L I/O Controller

3003

* 1 x LoRa antenna matched to the frequency of the LT-22222-L

3004

* 1 x bracket for DIN rail mounting

3005

* 1 x 3.5 mm programming cable

3006

3007

**Dimension and weight**:

3008

3009

* Device Size: 13.5 x 7 x 3 cm

3010

* Device Weight: 105 g

3011

* Package Size / pcs : 14.5 x 8 x 5 cm

3012

* Weight / pcs : 170 g

= 10. Support =

* (((

Support is available Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different time zones, we cannot offer live support. However, your questions will be answered as soon as possible within the aforementioned schedule.

3019

)))

3020

* (((

3021

Please provide as much information as possible regarding your inquiry (e.g., product models, a detailed description of the problem, steps to replicate it, etc.) and send an email to [[support@dragino.cc>>mailto:support@dragino.cc]]

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= 11. Reference =

* LT-22222-L: [[http:~~/~~/www.dragino.com/products/lora-lorawan-end-node/item/156-lt-22222-l.html>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/156-lt-22222-l.html]]

3030

* [[Datasheet, Document Base>>url:https://www.dropbox.com/sh/gxxmgks42tqfr3a/AACEdsj_mqzeoTOXARRlwYZ2a?dl=0]]

3031

* [[Hardware Source>>url:https://github.com/dragino/Lora/tree/master/LT/LT-33222-L/v1.0]]

Wiki source code of LT-22222-L -- LoRa I/O Controller User Manual

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