SDI-12-CB -- SDI-12 to NB-IoT/LTE-M Converter User Manual

The Dragino (% style="color:blue" %)**SDI-12-CB**(%%) is a (% style="color:blue" %)**SDI-12 to NB-IoT/LYE-M Converter **(%%)designed for Smart Agriculture solution.

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SDI-12 (Serial Digital Interface at 1200 baud) is an asynchronous [[serial communications>>url:https://en.wikipedia.org/wiki/Serial_communication]] protocol for intelligent sensors that monitor environment data. SDI-12 protocol is widely used in Agriculture sensor and Weather Station sensors.

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SDI-12-CB has SDI-12 interface and support 12v output to power external SDI-12 sensor. It can get the environment data from SDI-12 sensor and sends out the data via NB-IoT/CAT-M1 wireless protocol.

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SDI-12-CB supports different uplink methods including (% style="color:blue" %)**MQTT, MQTTs, UDP, TCP or CoAP**(%%) for different application requirement, and support uplinks to various IoT Servers.

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SDI-12-CB (% style="color:blue" %)**supports BLE configure **(%%)and(% style="color:blue" %)** OTA update**(%%) which make user easy to use.

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SDI-12-CB is powered by (% style="color:blue" %)**8500mAh Li-SOCI2 battery**(%%), it is designed for long-term use up to several years.

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SDI-12-CB has optional built-in SIM card and default IoT server connection version. Which makes it works with simple configuration.

== 1.2 Features ==

* For -NB Bands: B1/B2/B3/B4/B5/B8/B12/B13/B17/B18/B19/B20/B25/B28/B66/B70/B85

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* For -CB Bands: B1/B2/B3/B4/B5/B8/B12/B13~/~/B18/B19/B20/B25/B28/B66/B71/B85

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* CAT-M1 / LTE-M Bands: B1/B2/B3/B4/B5/B8/B12/B13/B18/B19/B20/B25/B26/B27/B28/B66/B85

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* Ultra-low power consumption

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* Controllable 3.3v, 5v and 12v output to power external sensor

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* SDI-12 Protocol to connect to SDI-12 Sensor

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* Multiply Sampling and one uplink

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* GNSS for Location Report

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* Support Bluetooth v5.1 remote configure and update firmware

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* Uplink on periodically

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* Downlink to change configure

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* 8500mAh Battery for long term use

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* Uplink via MQTT, MQTTs, TCP, UDP or CoAP

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* Nano SIM card slot for NB-IoT SIM

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== 1.3 Specification ==

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(% style="color:blue" %)**Common DC Characteristics:**

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* Supply Voltage: 2.6v ~~ 3.6v

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* Support current: 5V 300mA, 12V 100mA

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* Operating Temperature: -40 ~~ 85°C

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(% style="color:blue" %)**Current Input (DC) Measuring :**

* Range: 0 ~~ 20mA

* Accuracy: 0.02mA

* Resolution: 0.001mA

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(% style="color:blue" %)**Voltage Input Measuring:**

* Range: 0 ~~ 30v

* Accuracy: 0.02v

* Resolution: 0.001v

(% style="color:blue" %)**NB-IoT Spec:**

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(% style="color:#037691" %)**NB-IoT Module: BG95-NGFF**

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(% style="color:#037691" %)**Support Bands:**

* B1 @H-FDD: 2100MHz

* B2 @H-FDD: 1900MHz

* B3 @H-FDD: 1800MHz

* B4 @H-FDD: 2100MHz

* B5 @H-FDD: 860MHz

* B8 @H-FDD: 900MHz

* B12 @H-FDD: 720MHz

* B13 @H-FDD: 740MHz

* B17 @H-FDD: 730MHz

* B18 @H-FDD: 870MHz

* B19 @H-FDD: 870MHz

* B20 @H-FDD: 790MHz

* B25 @H-FDD: 1900MHz

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* B28 @H-FDD: 750MHz

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* B66 @H-FDD: 2000MHz

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* B70 @H-FDD: 2000MHz

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* B85 @H-FDD: 700MHz

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(% style="color:blue" %)**Battery:**

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* Li/SOCI2 un-chargeable battery

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* Capacity: 8500mAh

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* Self Discharge: <1% / Year @ 25°C

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* Max continuously current: 130mA

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* Max boost current: 2A, 1 second

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(% style="color:blue" %)**Power Consumption**

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* STOP Mode: 10uA @ 3.3v

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* Max transmit power: 350mA@3.3v

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== 1.4 Connect to SDI-12 Sensor ==

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[[image:image-20240729163908-2.png]]

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== 1.5 Sleep mode and working mode ==

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(% style="color:blue" %)**Deep Sleep Mode: **(%%)Sensor doesn't have any NB-IoT activate. This mode is used for storage and shipping to save battery life.

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(% style="color:blue" %)**Working Mode:** (%%)In this mode, Sensor will work as NB-IoT Sensor to Join NB-IoT network and send out sensor data to server. Between each sampling/tx/rx periodically, sensor will be in IDLE mode), in IDLE mode, sensor has the same power consumption as Deep Sleep mode.

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== 1.6 Button & LEDs ==

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[[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675071855856-879.png]]

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(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)

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|=(% style="width: 167px;background-color:#4F81BD;color:white" %)**Behavior on ACT**|=(% style="width: 117px;background-color:#4F81BD;color:white" %)**Function**|=(% style="width:226px;background-color:#4F81BD;color:white" %)**Action**

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|(% style="width:167px" %)Pressing ACT between 1s < time < 3s|(% style="width:117px" %)Send an uplink|(% style="width:225px" %)(((

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If sensor has already attached to NB-IoT network, sensor will send an uplink packet, (% style="color:blue" %)**blue led** (%%)will blink once.

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Meanwhile, BLE module will be active and user can connect via BLE to configure device.

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|(% style="width:167px" %)Pressing ACT for more than 3s|(% style="width:117px" %)Active Device|(% style="width:225px" %)(((

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(% style="color:green" %)**Green led**(%%) will fast blink 5 times, device will enter (% style="color:#037691" %)**OTA mode**(%%) for 3 seconds. And then start to attach NB-IoT network.

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(% style="color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after joined in network.

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Once sensor is active, BLE module will be active and user can connect via BLE to configure device, no matter if device attach NB-IoT network or not.

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)))

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|(% style="width:167px" %)Fast press ACT 5 times.|(% style="width:117px" %)Deactivate Device|(% style="width:225px" %)(% style="color:red" %)**Red led**(%%) will solid on for 5 seconds. Means device is in Deep Sleep Mode.

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(% style="color:red" %)**Note: When the device is executing a program, the buttons may become invalid. It is best to press the buttons after the device has completed the program execution.**

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== 1.7 BLE connection ==

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SDI-12-CB support BLE remote configure and firmware update.

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BLE can be used to configure the parameter of sensor or see the console output from sensor. BLE will be only activate on below case:

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* Press button to send an uplink

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* Press button to active device.

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* Device Power on or reset.

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If there is no activity connection on BLE in 60 seconds, sensor will shut down BLE module to enter low power mode.

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== 1.8 Pin Definitions , Switch & SIM Direction ==

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SDI-12-CB use the mother board which as below.

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[[image:image-20240729163436-1.jpeg||height="461" width="700"]]

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=== 1.8.1 Jumper JP2 ===

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Power on Device when put this jumper.

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=== 1.8.2 BOOT MODE / SW1 ===

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**1)** (% style="color:blue" %)**ISP**(%%): upgrade mode, device won't have any signal in this mode. but ready for upgrade firmware. LED won't work. Firmware won't run.

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**2)** (% style="color:blue" %)**Flash**(%%): work mode, device starts to work and send out console output for further debug

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=== 1.8.3 Reset Button ===

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Press to reboot the device.

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=== 1.8.4 SIM Card Direction ===

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See this link. [[How to insert SIM Card>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H2.AttachNetwork]].

== 1.9 Mechanical ==

[[image:image-20250224110733-4.png]]

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= 2. Use SDI-12-CB to communicate with IoT Server =

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== 2.1 Send data to IoT server via NB-IoT/CAT-M1 network ==

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The SDI-12-CB is equipped with a NB-IoT module, the pre-loaded firmware in SDI-12-CB will get environment data from sensors and send the value to local NB-IoT network via the NB-IoT module. The NB-IoT network will forward this value to IoT server via the protocol defined by SDI-12-CB.

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Below shows the network structure:

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[[image:image-20240731115407-1.png]]

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There are two version: (% style="color:blue" %)**-GE**(%%) and (% style="color:blue" %)**-1T**(%%) version of SDI-12-CB.

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(% style="color:blue" %)**GE Version**(%%): This version doesn't include SIM card or point to any IoT server. User needs to use AT Commands to configure below two steps to set SDI-12-CB send data to IoT server.

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* Install NB-IoT SIM card and configure APN. See instruction of [[Attach Network>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H2.AttachNetwork]].

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* Set up sensor to point to IoT Server. See instruction of [[Configure to Connect Different Servers>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H3.Configuretoconnecttodifferentservers]].

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Below shows result of different server as a glance.

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(% border="1" cellspacing="3" style="width:515px" %)

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|(% style="background-color:#4f81bd; color:white; width:100px" %)**Servers**|(% style="background-color:#4f81bd; color:white; width:300px" %)**Dash Board**|(% style="background-color:#4f81bd; color:white; width:115px" %)**Comments**

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|(% style="width:127px" %)[[Node-Red>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H3.5A0Node-RedA028viaA0MQTT29]]|(% style="width:385px" %)(((

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

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[[image:image-20230819113244-8.png||height="183" width="367"]]

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)))|(% style="width:170px" %)

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|[[ThingSpeak>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H3.3A0ThingSpeakA028viaA0MQTT29]]|(((

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[[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/S31-CBS31B-CB--NB-IoTLTE-M_Temperature%26Humidity_Sensor_User_Manual/WebHome/image-20230819113244-10.png?width=367&height=104&rev=1.1||alt="image-20230819113244-10.png" height="104" width="367"]]

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)))|

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|[[ThingsBoard>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H3.6A0ThingsBoard.CloudA028viaA0MQTT29]]|(((

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[[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/S31-CBS31B-CB--NB-IoTLTE-M_Temperature%26Humidity_Sensor_User_Manual/WebHome/image-20230819113244-11.png?width=367&height=141&rev=1.1||alt="image-20230819113244-11.png" height="141" width="367"]]

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)))|

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|(% style="width:127px" %)[[Tago.IO>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H3.7A0Tago.ioA028viaA0MQTT29]]|(% style="width:385px" %) |(% style="width:170px" %)

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|(% style="width:127px" %)[[General UDP>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H3.1GeneralA0UDPA0Connection]]|(% style="width:385px" %)Raw Payload. Need Developer to design Dash Board|(% style="width:170px" %)

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|(% style="width:127px" %)[[General MQTT>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H3.2GeneralA0MQTTA0Connection]]|(% style="width:385px" %)Raw Payload. Need Developer to design Dash Board|(% style="width:170px" %)

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(% style="color:blue" %)**1T Version**(%%): This version has 1NCE SIM card pre-installed and configure to send value to ThingsEye. User Just need to select the sensor type in ThingsEyeand Activate SDI-12-CB and user will be able to see data in ThingsEye. See here for [[ThingsEye Config Instruction>>url:https://wiki.thingseye.io/xwiki/bin/view/Main/]].

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== 2.2 Payload Types ==

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To meet different server requirement, SDI-12-CB supports different payload type.

**Includes:**

* [[General JSON format payload>>||anchor="H2.2.1GeneralJsonFormat28Type3D529"]]. (Type=5)

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* [[HEX format Payload>>||anchor="H2.2.2HEXformatPayload28Type3D029"]]. (Type=0)

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User can specify the payload type when choose the connection protocol. Example:

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(% style="color:#037691" %)**AT+PRO=2,0** (%%) ~/~/ Use UDP Connection & hex Payload

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(% style="color:#037691" %)**AT+PRO=2,5** (%%) ~/~/ Use UDP Connection & Json Payload

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(% style="color:#037691" %)**AT+PRO=3,0** (%%) ~/~/ Use MQTT Connection & hex Payload

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(% style="color:#037691" %)**AT+PRO=3,5 ** (%%) ~/~/ Use MQTT Connection & Json Payload

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(% style="color:#037691" %)**AT+PRO=4,0** (%%) ~/~/ Use TCP Connection & hex Payload

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(% style="color:#037691" %)**AT+PRO=4,5** (%%) ~/~/ Use TCP Connection & Json Payload

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**Since firmware V1.1.0**, (% style="color:#4472c4" %)**IMSI, Pulse_count, VDC_input, IDC_input**(%%) have all been added to the payload.

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The following describes the latest payload.

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(% style="color:red" %)**Note: The default is AT+GPS=0 ~/~/ The GPS function is not enabled. Therefore, the GPS collection time in the following example paylaod does not follow the system time, and the latitude and longitude are 0.**

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=== 2.2.1 General Json Format(Type~=5) ===

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The payload will show Pulse_count, VDC_input, IDC_input only if the corresponding function is enabled. Below is an example with **[[AT+EXT=1,1,1>>||anchor="H3.14addPulse_count2CVDC_input2CIDC_input28SincefirmwareV1.1.029"]]**.

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This is the General Json Format. As below:

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(% style="color:#4472c4" %)**{"IMEI":"864370064394465","IMSI":"460086860409006","Model":"SDI12-CB","Payload":"01113METER TER12 112T12-00024895\r\n1+1831.34+22.3+1\r\n","pulse_count":0,"vdc_input":3.261,"idc_input":0.000,"interrupt":0,"interrupt_level":0,"battery":3.268,"signal":24,"time":"2025-02-22T01:53:52Z","latitude":0.000000,"longitude":0.000000,"gps_time":"1970-01-01T00:00:00Z","1":[0,0.000,0.000,"01113METER TER12 112T12-00024895\r\n1+1831.27+21.7+1\r\n","2025-02-22T01:02:32Z"],"2":[0,0.000,0.000,"01113METER TER12 112T12-00024895\r\n1+1831.57+21.7+1\r\n","2025-02-22T00:47:32Z"],"3":[0,0.000,0.000,"01113METER TER12 112T12-00024895\r\n1+1832.29+21.2+1\r\n","2025-02-22T00:32:32Z"],"4":[0,0.000,0.000,"01113METER TER12 112T12-00024895\r\n1+1831.49+21.4+1\r\n","2025-02-22T00:17:32Z"],"5":[0,0.000,0.000,"01113METER TER12 112T12-00024895\r\n1+1831.64+21.4+1\r\n","2025-02-22T00:02:32Z"],"6":[0,0.000,0.000,"01113METER TER12 112T12-00024895\r\n1+1831.65+21.4+1\r\n","2025-02-21T23:47:32Z"],"7":[0,0.000,0.000,"01113METER TER12 112T12-00024895\r\n1+1831.43+21.4+1\r\n","2025-02-21T23:32:32Z"],"8":[0,0.000,0.000,"01113METER TER12 112T12-00024895\r\n1+1832.08+21.4+1\r\n","2025-02-21T23:17:32Z"]}**

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[[image:image-20250222112308-1.png||height="666" width="830"]]

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(% style="color:red" %)**Notice, from above payload:**

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* Payload, pulse_count, vdc_input, idc_input, Interrupt, Interrupt_level, Battery, Signal, time, latitude, longitude & GPS time are the value at uplink time.

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* Json entry 1 ~~ 8 are the last 1 ~~ 8 sampling data as specify by (% style="color:#4472c4" %)**AT+CLOCKLOG=1,65535,15,8 **(%%)Command. Each entry includes (from left to right): pulse_count, vdc_input, idc_input, payload & Sampling time.

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If the corresponding mode is not enabled, such as **AT+EXT=0,0,0**, then the payload:

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* Payload, Interrupt, Interrupt_level, Battery, Signal, time, latitude, longitude & GPS time are the value at uplink time.

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* Json entry 1 ~~ 8 are the last 1 ~~ 8 sampling data as specify by (% style="color:#4472c4" %)**AT+CLOCKLOG=1,65535,15,8 **(%%)Command. Each entry includes (from left to right): payload, Sampling time.

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=== 2.2.2 HEX format Payload(Type~=0) ===

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The payload will show Pulse_count, VDC_input, IDC_input only if the corresponding function is enabled. Below is an example with **[[AT+EXT=1,1,1>>||anchor="H3.14addPulse_count2CVDC_input2CIDC_input28SincefirmwareV1.1.029"]]**.

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This is the HEX Format. As below:

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(% style="color:#4472c4" %)**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**

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[[image:image-20250222112324-2.png]]

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[[image:image-20250222113257-5.png||height="660" width="827"]]

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(% style="color:blue" %)**Device ID(f+IMEI):**(%%)** **f864370064394465 = 864370064394465

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(% style="color:blue" %)**SIM Card ID(f+IMSI):**(%%)** **f460086860409006 = 460086860409006

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(% style="color:blue" %)**Version:**

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These bytes include the hardware and software version.

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(% style="color:#037691" %)**Higher byte:**(%%) Specify Sensor Model: 0x47 for SDI-12-CB

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(% style="color:#037691" %)**Lower byte:**(%%) Specify the software version: 0x6e=110, means firmware version 1.1.0

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(% style="color:blue" %)**BAT (Battery Info):**

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Check the battery voltage for SDI-12-CB.

Ex1: 0x0c8c = 3212mV

Ex2: 0x0B49 = 2889mV

(% style="color:blue" %)**Signal Strength:**

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NB-IoT Network signal Strength.

**Ex1: 0x1a = 26**

**0** -113dBm or less

**1** -111dBm

**2...30** -109dBm... -53dBm

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**31** -51dBm or greater

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**99** Not known or not detectable

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(% style="color:blue" %)**Interrupt:**

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This data field shows if this packet is generated by interrupt or not.

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(% style="color:#037691" %)**Example:**

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0x00: Normal uplink packet.

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0x01: Interrupt Uplink Packet.

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(% style="color:blue" %)**Interrupt_level:**

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GPIO_EXTI is used as Interrupt Pin.

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This byte shows whether the interrupt is triggered by a high or low level.

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(% style="color:#037691" %)**Example**:

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01(H): GPIO_EXTI pin is high level.

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00(L): GPIO_EXTI pin is low level

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(% style="color:blue" %)**Latitude:**

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EX1:** **0x00000000 ~/~/ Locating fails or is not enabled.

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EX2:** **0x015a771e(H)=22705950(D)=22.705950

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(% style="color:blue" %)**Longitude:**

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EX1:** **0x00000000 ~/~/ Locating fails or is not enabled.

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EX2:** **0x114242500(H)=114242500(D)=114.242500

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(% style="color:blue" %)**GPS_Timestamp:**

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EX1: 0x00000000 ~/~/ The value is "1970-01-01T00:00:00Z" in JSON format. The initial GPS time is not refreshed if GPS positioning is disabled or fails.

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EX2: 0x6682595d =1719818589 = 2024-07-01 15:23:09

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(% style="color:blue" %)**TimeStamp:**(%%)** **

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Unit TimeStamp Example: 67b92c7a(H) = 1740188794(D)

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Put the decimal value into this link([[https:~~/~~/www.epochconverter.com/)>>url:https://www.epochconverter.com/)]] to get the time.

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(% style="color:blue" %)**Pulse count:**

413

414

The GPIO_EXTI pin is also used for the counting function.

415

416

When the pulse counting function is enabled using the AT+EXT command, the GPIO_EXTI pin is used for counting instead of interrupting.

417

418

(% style="color:#037691" %)**Example:**

0x00000230(H)=560(D)

(% style="color:blue" %)**VDC input:**

424

425

Measure the voltage value. The range is 0 to 30V.

426

427

(% style="color:#037691" %)**Example:**

428

429

0c90(H) = 3216(D)/1000= 3.216V

430

431

432

(% style="color:blue" %)**IDC input:**

433

434

Measure the current value. The range is 0 to 20mA.

435

436

(% style="color:#037691" %)**Example:**

437

438

27AE(H) = 10158 (D)/1000 = 10.158mA.

439

440

441

(% style="color:blue" %)**Payload_version: **

442

443

The payload version number is used to parse different decodes.

444

445

446

(% style="color:blue" %)**SDI12_sensor_data:**

447

448

The data returned by the SDI-12 sensor or UART sensor needs to be cut out the AT+DATACUTx or AT+ALLDATAMOD commands.

449

450

451

If the corresponding mode is not enabled, such as **AT+EXT=0,0,0**, then the payload:

452

453

[[image:image-20250222115909-6.png]]

454

455

456

= 3. Configure SDI-12-CB =

457

458

== 3.1 Configure Methods ==

459

460

461

SDI-12-CB supports below configure method:

462

463

* AT Command via Bluetooth Connection (**Recommended**): [[BLE Configure Instruction>>http://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]].

464

465

* AT Command via UART Connection : See [[UART Connection>>http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H2.3UARTConnectionforSN50v3basemotherboard]].

466

467

== 3.2 Serial Access Password ==

468

469

470

After the Bluetooth or UART connection is successful, use the Serial Access Password to enter the AT command window.

471

472

The label on the box of the node will print the initial password: AT+PIN=**xxxxxx**, and directly use the six-digit password to access the AT instruction window.

473

474

[[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-NB%2C-NS_RS485%2CUART_to_NB-IoT_Converter_User_Manual/WebHome/image-20250226165815-1.png?rev=1.1||alt="image-20250226165815-1.png"]]

475

476

477

If you need to change the password, use **AT+PWORD=**xxxxxx (6 characters), -CB nodes only support lowercase letters.

478

479

[[image:image-20240826183633-3.png]]

480

481

482

(% style="color:red" %)**Note: After entering the command, you need to add a line break, and you can also set automatic line breaks in the Bluetooth tool or UART connection tool.**

483

484

[[image:image-20240826183639-4.png]]

485

486

487

== 3.3 AT Commands Set ==

488

489

490

AT+<CMD>? : Help on <CMD>

AT+<CMD> : Run <CMD>

AT+<CMD>=<value> : Set the value

495

496

AT+<CMD>=? : Get the value

497

498

499

(% style="color:blue" %)**General Commands**

AT : Attention

AT? : Short Help

AT+MODEL : Get module information

506

507

ATZ : Trig a reset of the MCU

508

509

AT+DEUI : Get or set the Device ID

510

511

AT+SLEEP : Get or set the sleep status

512

513

AT+DEBUG : Set more info output

514

515

AT+SERVADDR: Get or Set the Server address

516

517

AT+TDC : Get or set the application data transmission interval in s

518

519

AT+APN : Get or set the APN

520

521

AT+12VT : Get or Set extend the time of 12V power

522

523

AT+5VT : Get or Set extend the time of 5V power

524

525

AT+3V3T : Get or Set extend the time of 3V3 power

526

527

AT+INTMOD : Get or Set the trigger interrupt mode (0:input,1:falling or rising,2:falling,3:rising)

528

529

AT+PRO : Get or Set usage agreement (1:COAP,2:UDP,3:MQTT,4:TCP)

530

531

AT+RXDL : Get or Set the receiving time

532

533

AT+CDP : Read or Clear cached data

534

535

AT+GETSENSORVALUE : Returns the current sensor measurement

536

537

AT+DNSCFG : Get or Set DNS Server

538

539

AT+CSQTIME : Get or Set the time to join the network

540

541

AT+GDNS : Get or Set the DNS

542

543

AT+TLSMOD : Get or Set the TLS mode

544

545

AT+MQOS : Set the QoS level of MQTT

546

547

AT+IPTYPE : Set the IPv4 or IPv6

548

549

AT+QSW : Power on and power off BG95 module

550

551

AT+ADDRI: Send aI command to SDI12 sensor

552

553

AT+ADDRM: Send aM command to SDI12 sensor

554

555

AT+ADDRC: Send aC command to SDI12 sensor

556

557

AT+ADDRR: Send aR command to SDI12 sensor

558

559

AT+CMDEAR: Erase command(number of begin to number of ending)

560

561

AT+PAYVER: Get or Set payload version

562

563

AT+ALLDATAMOD: Get or Set mode of all data is cuted

564

565

AT+CONVFORM: Conversion between characters and their ASCII

566

567

AT+COMMAND: Send data of command1-15 to SDI12 deceive for payload

568

569

AT+DATACUT: Cut receive data after use command1-15

570

571

AT+CFGDEV: Send data to SDI12 deceive

572

573

AT+CLOCKLOG: Enable or Disable Clock Logging

574

575

AT+TIMESTAMP : Get or Set UNIX timestamp in second

576

577

AT+GETLOG : Print serial port logs

578

579

AT+CFG : Print all settings

580

581

582

(% style="color:blue" %)**MQTT Management**

583

584

AT+CLIENT : Get or Set the MQTT clientID

585

586

AT+UNAME : Get or Set the MQTT Username

587

588

AT+PWD : Get or Set the MQTT password

589

590

AT+PUBTOPIC: Get or set MQTT publishing topic

591

592

AT+SUBTOPIC: Get or set MQTT subscription topic

593

594

595

(% style="color:blue" %)**Coap Management**

596

597

AT+URI1: Get or set CoAP option 1

598

599

AT+URI2: Get or set CoAP option 2

600

601

AT+URI3: Get or set CoAP option 3

602

603

AT+URI4: Get or set CoAP option 4

604

605

AT+URI5: Get or set CoAP option 5

606

607

AT+URI6: Get or set CoAP option 6

608

609

AT+URI7: Get or set CoAP option 7

610

611

AT+URI8: Get or set CoAP option 8

612

613

614

(% style="color:blue" %)**GPS**

615

616

AT+GNSST : Extend the time to turn on GNSS

617

618

AT+GPS : Turn off and on GPS

619

620

AT+GTDC : Get or set GPS positioning interval in units of h

621

622

623

(% style="color:blue" %)**Information**

624

625

AT+FDR1 : Reset parameters to factory default values except for passwords

626

627

AT+FDR : Reset Parameters to Factory Default

628

629

AT+PWORD : Get or set the System password

630

631

AT+LDATA : Get the last upload data

632

633

634

== 3.4 SDI-12 Related Commands ==

635

636

637

User need to configure SDI-12-CB to communicate with SDI-12 sensors otherwise the uplink payload will only include a few bytes.

638

639

640

=== 3.4.1 Basic SDI-12 debug command ===

641

642

643

User can run some basic SDI-12 command to debug the connection to the SDI-12 sensor. These commands can be sent via AT Command or NB-IoT downlink command.

644

645

If SDI-12 sensor return value after get these commands, //SDI-12-CB// will uplink the return on FPORT=100, otherwise, if there is no response from SDI-12 sensor. //SDI-12-CB// will uplink NULL (0x 4E 55 4C 4C) to server.

646

647

The following is the display information on the serial port and the server.

648

649

650

[[image:image-20231102163336-2.png||height="287" width="500"]]

651

652

653

[[image:image-20231102163417-5.png||height="83" width="772"]]

==== (% style="color:blue" %)**al! ~-~- Get SDI-12 sensor Identification**(%%) ====

658

659

660

* AT Command: AT+ADDRI=aa

661

* NB-IoT Downlink(prefix 0xAA00): AA 00 aa

662

663

(% style="color:#037691" %)**Parameter: **(%%)aa: ASCII value of SDI-12 sensor address in downlink or HEX value in AT Command)

664

665

(% style="color:blue" %)**Example : **(%%)AT+ADDRI=0 ( Equal to downlink: 0x AA 00 30)

666

667

668

The following is the display information on the serial port and the server.

669

670

671

[[image:image-20231030170258-5.png]]

672

673

674

[[image:image-20231030170155-4.png||height="400" width="1192"]]

675

676

(% style="display:none" %) (%%)

677

678

679

==== (% style="color:blue" %)**aM!,aMC!, aM1!- aM9!, aMC1!- aMC9!**(%%) ====

680

681

682

(% style="color:red" %)**aM! **(%%): Start Non-Concurrent Measurement

683

684

(% style="color:red" %)**aMC! **(%%): Start Non-Concurrent Measurement – Request CRC

685

686

(% style="color:red" %)**aM1!- aM9! **(%%): Additional Measurements

687

688

(% style="color:red" %)**aMC1!- aMC9!**(%%) : Additional Measurements – Request CRC

689

690

691

* AT Command : AT+ADDRM=0,1,0,1

692

693

(% style="color:#037691" %)**aa**(%%): SDI-12 sensor address.

694

695

(% style="color:#037691" %)**bb**(%%): 0: no CRC, 1: request CRC

696

697

(% style="color:#037691" %)**cc**(%%): 1-9: Additional Measurement, 0: no additional measurement

698

699

(% style="color:#037691" %)**dd**(%%): delay (in second) to send (% style="color:#037691" %)__**aD0!**__(%%) to get return.

700

701

702

The following is the display information on the serial port and the server.

703

704

705

[[image:image-20231030173023-6.png]]

706

707

708

[[image:image-20231030173128-7.png||height="253" width="1114"]]

==== (% style="color:blue" %)**aC!, aCC!, aC1!- aC9!, aCC1!- aCC9! **(%%) ====

713

714

715

(% style="color:red" %)**aC!**(%%) : Start Concurrent Measurement

716

717

(% style="color:red" %)**aCC!** (%%): Start Concurrent Measurement – Request CRC

718

719

(% style="color:red" %)**aC1!- aC9!**(%%) : Start Additional Concurrent Measurements

720

721

(% style="color:red" %)**aCC1!- aCC9!**(%%) : Start Additional Concurrent Measurements – Request CRC

722

723

724

* AT Command : AT+ADDRC=0,1,0,1

725

726

(% style="color:#037691" %)**aa**(%%): SDI-12 sensor address.

727

728

(% style="color:#037691" %)**bb**(%%): 0: no CRC, 1: request CRC

729

730

(% style="color:#037691" %)**cc**(%%): 1-9: Additional Measurement, 0: no additional measurement

731

732

(% style="color:#037691" %)**dd**(%%): delay (in second) to send (% style="color:#037691" %)__**aD0!**__(%%)__ __to get return.

733

734

735

The following is the display information on the serial port and the server.

736

737

738

[[image:image-20231030173510-8.png]]

739

740

741

[[image:image-20231030173533-9.png||height="231" width="1159"]]

==== (% style="color:blue" %)**aR0!- aR9!, aRC0!- aRC9!**(%%) ====

746

747

748

Start Continuous Measurement

749

750

Start Continuous Measurement – Request CRC

751

752

753

* AT Command : AT+ADDRR=0,1,0,1

754

755

(% style="color:#037691" %)**aa**(%%): SDI-12 sensor address.

756

757

(% style="color:#037691" %)**bb**(%%): 0: no CRC, 1: request CRC

758

759

(% style="color:#037691" %)**cc**(%%): 1-9: Additional Measurement, 0: no additional measurement

760

761

(% style="color:#037691" %)**dd**(%%): delay (in second) to send (% style="color:#037691" %)__**aD0!**__(%%) to get return.

762

763

764

The following is the display information on the serial port and the server.

765

766

767

[[image:image-20231030173727-10.png]]

768

769

770

[[image:image-20231030173747-11.png||height="237" width="1194"]]

771

772

773

=== 3.4.2 Advance SDI-12 Debug command ===

774

775

776

This command can be used to debug all SDI-12 command.(% style="display:none" %)

777

778

(% style="color:blue" %)**Example1: **(%%) AT+CFGDEV =0RC0!,1

779

780

(% style="color:#037691" %)**0RC0! **(%%): SDI-12 Command,

781

782

(% style="color:#037691" %)**1 **(%%): Delay 1 second. ( 0: 810 mini-second)

783

784

The following is the display information on the serial port and the server.

785

786

[[image:image-20231030174559-13.png]]

787

788

(% style="display:none" %) (%%)

789

790

(% style="color:blue" %)**Example2: **(%%) AT+CFGDEV =0M!,1,1

791

792

(% style="color:#037691" %)**0M! **(%%): SDI-12 Command,

793

794

(% style="color:#037691" %)**1 **(%%): Delay 1 second. ( 0: 810 mini-second)

795

796

(% style="color:#037691" %)**1 **(%%): Use aD0! command access.

797

798

799

The following is the display information on the serial port and the server.

800

801

[[image:image-20231030174626-14.png]]

802

803

804

=== 3.4.3 Convert ASCII to String ===

805

806

807

This command is used to convert between ASCII and String format.

808

809

AT+CONVFORM ( Max length: 80 bytes)

810

811

812

(% style="color:blue" %)**Example:**

813

814

1) AT+CONVFORM=0, string Convert String from String to ASCII

815

816

[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/SDI-12-LB%20--%20SDI-12%20to%20LoRaWAN%20Converter%20User%20Manual/WebHome/1675214845056-885.png?rev=1.1||alt="1675214845056-885.png"]]

817

818

819

2) AT+CONVFORM=1, ASCII Convert ASCII to String.

820

821

[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/SDI-12-LB%20--%20SDI-12%20to%20LoRaWAN%20Converter%20User%20Manual/WebHome/1675214856590-846.png?rev=1.1||alt="1675214856590-846.png"]]

822

823

824

=== 3.4.4 Define periodically SDI-12 commands and uplink. ===

825

826

827

AT+COMMANDx & AT+DATACUTx

828

829

User can define max 15 SDI-12 Commands (AT+COMMAND1 ~~ AT+COMMANDF). On each uplink period (TDC time, default 20 minutes), SDI-12-CB will send these SDI-12 commands and wait for return from SDI-12 sensors. SDI-12-CB will then combine these returns and uplink via NB-IoT.

830

831

832

* (% style="color:blue" %)**AT Command:**

833

834

(% style="color:#037691" %)**AT+COMMANDx=var1,var2,var3,var4.**

835

836

(% style="color:red" %)**var1**(%%): SDI-12 command , for example: 0RC0!

837

838

(% style="color:red" %)**var2**(%%): Wait timeout for return. (unit: second)

839

840

(% style="color:red" %)**var3**(%%): Whether to send //addrD0!// to get return after var2 timeout. 0: Don't Send //addrD0! //; 1: Send //addrD0!//.

841

842

(% style="color:red" %)**var4**(%%): validation check for return. If return invalid, SDI-12-CB will resend this command. Max 3 retries.

843

844

(% style="color:red" %)**0 **(%%) No validation check;

845

846

(% style="color:red" %)**1** (%%) Check if return chars are printable char(0x20 ~~ 0x7E);

847

848

(% style="color:red" %)**2**(%%) Check if there is return from SDI-12 sensor

849

850

(% style="color:red" %)**3** (%%) Check if return pass CRC check ( SDI-12 command var1 must include CRC request);

851

852

853

Each AT+COMMANDx is followed by a (% style="color:blue" %)**AT+DATACUT**(%%) command. AT+DATACUT command is used to take the useful string from the SDI-12 sensor so the final payload will have the minimum length to uplink.

854

855

856

(% style="color:blue" %)**AT+DATACUTx**(%%) : This command defines how to handle the return from AT+COMMANDx, max return length is 100 bytes.

857

858

(% border="1" style="width:433px" %)

859

|(% style="background-color:#f2f2f2; width:433px" %)(((

860

(% style="color:#0070c0" %)**AT+DATACUTx=a,b,c**

861

862

**a**: length for the return of AT+COMMAND

863

864

**b**: 1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.

865

866

**c**: define the position for valid value.

867

)))

868

869

For example, if return from AT+COMMAND1 is “013METER TER12 112T12-00024895<CR><LF>” , Below AT+DATACUT1 will get different result to combine payload:

870

871

872

(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)

873

|=(% style="width: 164px;background-color:#4F81BD;color:white" %)**AT+DATACUT1 value**|=(% style="width: 346px;background-color:#4F81BD;color:white" %)**Final Result to combine Payload**

874

|(% style="background-color:#f2f2f2; width:164px" %)34,1,1+2+3|(% style="background-color:#f2f2f2; width:344px" %)0D 00 01 30 31 33

875

|(% style="background-color:#f2f2f2; width:164px" %)34,2,1~~8+12~~16|(% style="background-color:#f2f2f2; width:344px" %)0D 00 01 30 31 33 4D 45 54 45 52 54 45 52 31 32

876

|(% style="background-color:#f2f2f2; width:164px" %)34,2,1~~34|(% style="background-color:#f2f2f2; width:344px" %)0D 00 01 30 31 33 4D 45 54 45 52 20 20 20 54 45 52 31 32 20 31 31 32 54 31 32 2D 30 30 30 32 34 38 39 35 0D 0A

877

878

(% style="color:red" %)**Note : if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.**

879

880

881

(% style="color:blue" %)**Clear SDI12 Command**

882

883

The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.

884

885

886

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

887

888

(% style="color:#4f81bd" %)**AT+CMDEAR=mm,nn** (%%) mm: start position of erase ,nn: stop position of erase

889

890

891

**Etc.** AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10

892

893

894

(% style="color:blue" %)**command combination**

895

896

Below shows a screen shot how the results combines together to a uplink payload.

897

898

(% style="display:none" %) (%%)

899

900

[[image:image-20231102172455-6.png||height="909" width="1014"]]

901

902

If user don't want to use DATACUT for some command, he simply want to uplink all returns. AT+ALLDATAMOD can be set to 1.

903

904

(% style="color:blue" %)**AT+ALLDATAMOD**(%%) will simply get all return and don't do CRC check as result for SDI-12 command. AT+DATACUTx command has higher priority, if AT+DATACUTx has been set, AT+ALLDATAMOD will be ignore for this SDI-12 command.

905

906

907

(% style="color:#4f81bd" %)**For example: **(%%) as below photo, AT+ALLDATAMOD=1, but AT+DATACUT1&2 has been set, AT+DATACUT1 &2will be still effect the result.

908

909

910

[[image:image-20231102172516-7.png||height="819" width="1074"]](% style="display:none" %)

911

912

If AT+ALLDATAMOD=1, (% style="color:#4f81bd" %)**FX,X**(%%) will be added in the payload, (% style="color:#4f81bd" %)**FX**(%%) specify which command is used and (% style="color:#4f81bd" %)**X**(%%) specify the length of return（Hex format）, (% style="color:#4f81bd" %)**(X) **(%%)in JSON format will be added to the payload, where (% style="color:#4f81bd" %)**X**(%%) represents the command number.

913

914

for example in above screen, F1 23 means the return is from AT+COMMAND1 and the return is 35 bytes.

915

916

917

== 3.5 Examples To Set SDI commands ==

918

919

920

(% style="color:red" %)**Note: The reading sensor command method of the NB series SDI12 converter is the same as that of the LORA series SDI12 converter.**

921

922

923

=== 3.5.1 Examples 1 ~-~- General Example ===

924

925

926

COM port and SDI-12 sensor communication converted to SDI-12-CB and SDI-12 sensor communication.

927

928

[[image:image-20250224111224-5.jpeg]]

929

930

931

(% style="color:blue" %)**1) The AT+COMMANDx command is applied to the red arrow part, and sends the SDI12 command to the SDI12 sensor:**

932

933

a. Send the first command and get the first reply:

934

935

(% style="color:#037691" %)**AT+COMMANDx=1I!,0,0,1**

936

937

b. Send the second command and get the second reply:

938

939

(% style="color:#037691" %)**AT+COMMANDx=2I!,0,0,1**

940

941

c. Send the third command and get the third reply:

942

943

(% style="color:#037691" %)**AT+COMMANDx=3I!,0,0,1**

944

945

d. Send the fourth command and get the fourth reply:

946

947

(% style="color:#037691" %)**AT+COMMANDx=4I!,0,0,1**

948

949

e. Send the fifth command plus the sixth command, get the sixth reply:

950

951

(% style="color:#037691" %)**AT+COMMANDx=1M!,2,1,1**

952

953

f. Send the seventh command plus the eighth command, get the eighth reply:

954

955

(% style="color:#037691" %)**AT+COMMANDx=2M!,2,1,1**

956

957

g. Send the ninth command plus the tenth command, get the tenth reply:

958

959

(% style="color:#037691" %)**AT+COMMANDx=3M!,1,1,1**

960

961

h. Send the eleventh command plus the twelfth command, get the twelfth reply:

962

963

(% style="color:#037691" %)**AT+COMMANDx=4M!,1,1,1**

964

965

966

(% style="color:blue" %)**2) The AT+DATACUTx command is applied to the green arrow part, receiving and cut out data from the SDI12 sensor:**

967

968

a. The first reply, all 34 characters: "113TRUEBNERSMT100038220303182331<CR><LF>"

969

970

Cut out all characters: (% _mstmutation="1" style="color:#037691" %)**AT+ALLDATAMOD=1 or AT+DATACUTx=34,2,1~~34**(% style="color:#037691" %);

971

972

b. The sixth reply, all 31 characters："1+19210+1.04+0.00+22.49+11.75<CR><LF>"

973

974

Cut out all characters: (% _mstmutation="1" style="color:#037691" %)**AT+ALLDATAMOD=1 or AT+DATACUTx=31,2,1~~31**(% style="color:#037691" %);

975

976

c. The eighth reply, all 31 characters："2+18990+1.08+0.00+22.24+11.80<CR><LF>"

977

978

Cut out all characters: (% _mstmutation="1" style="color:#037691" %)**AT+ALLDATAMOD=1 or AT+DATACUTx=31,2,1~~31**(% style="color:#037691" %);

979

980

d. The tenth reply, all 15 characters：”3-2919.8+24.0<CR><LF>”

981

982

Cut out all characters: (% _mstmutation="1" style="color:#037691" %)**AT+ALLDATAMOD=1 or AT+DATACUTx=15,2,1~~15**(% style="color:#037691" %);

983

984

e. The twelfth reply, all 25 characters："4+30.8+22.84+4.7+954.38<CR><LF>"

985

986

Partial cut, the cut sensor address and the first two parameters: (% style="color:#037691" %)**AT+DATACUTx=25,2,1~~12, cut out the character field " 4+30.8+22.84"**.

987

988

989

=== 3.5.2 Example 2 ~-~- Connect to Hygrovue10 ===

990

991

==== 3.5.2.1 Reference Manual and Command ====

992

993

994

* [[Hygrovue10 Product Page>>https://www.campbellsci.com/hygrovue10]]

995

996

* Commands to be used in PC and output.

997

998

~1. check device address

999

1000

2. change device address

3. check device ID

4. start measure

5. Get Meausre result

1007

1008

[[image:image-20250224111807-6.jpeg]]

1009

1010

1011

==== 3.5.2.2 Hardware Connection to SDI-12-CB ====

1012

1013

[[image:image-20250224111830-7.jpeg]]

1014

1015

1016

==== 3.5.2.3 Commands set in SDI-12-CB and uplink payload ====

1017

1018

[[image:image-20250224112150-8.jpeg]]

1019

1020

[[image:image-20250224112244-9.jpeg]]

1021

1022

1023

=== 3.5.3 Example 3 ~-~- Connect to SIL-400 ===

1024

1025

==== 3.5.3.1 Reference Manual and Command ====

1026

1027

1028

* [[SIL-400 Product Page>>https://www.apogeeinstruments.com/sil-411-commercial-grade-sdi-12-digital-output-standard-field-of-view-infrared-radiometer-sensor/]]

1029

1030

* Commands to be used in PC and output.

1031

1032

~1. check device address

1033

1034

2. change device address

3. check device ID

4. start measure

5. Get Meausre result

1041

1042

[[image:image-20250224112349-10.jpeg]]

1043

1044

1045

==== 3.5.3.2 Hardware Connection to SDI-12-CB ====

1046

1047

1048

[[image:image-20250224112742-13.jpeg]]

1049

1050

1051

==== 3.5.3.3 Commands set in SDI-12-CB and uplink payload ====

1052

1053

1054

[[image:image-20250224112808-14.jpeg]]

1055

1056

[[image:image-20250224112834-15.jpeg]]

1057

1058

1059

=== 3.5.4 Example 4 ~-~- Connect to TEROS-12 ===

1060

1061

==== 3.5.4.1 Reference Manual and Command ====

1062

1063

1064

* [[TEROS-12 Product Page>>https://www.metergroup.com/en/meter-environment/products/teros-12-soil-moisture-sensor]]

1065

1066

* Commands to be used in PC and output.

1067

1068

1.check device address

1069

1070

2.change device address

3.check device ID

4.start measure

5.Get Meausre result

[[image:image-20250224112906-16.jpeg]]

1079

1080

1081

==== 3.5.4.2 Hardware Connection to SDI-12-CB ====

1082

1083

1084

[[image:image-20250224112924-17.jpeg]]

1085

1086

1087

==== 3.5.4.3 Commands set in SDI-12-CB and uplink payload ====

1088

1089

1090

[[image:image-20250224112944-18.jpeg]]

1091

1092

[[image:image-20250224113000-19.jpeg]]

1093

1094

1095

=== 3.5.5 Example 5 ~-~- Connect to SIL-400/TEROS-12 & Hygrovue10 ===

1096

1097

==== 3.5.5.1 Important Notice! ====

1098

1099

1100

* The product page and reference command see above example 2,3,4

1101

1102

* All of these SDI-12 sensors use the same address (address 0) by default. So we need to change their address to different address, by using **aAb!** command. See above example.

1103

1104

* The sensor needs to be powered to a steady statue. So the 12VT time need to be set to the maximum stable time for the sensors. in this example, it is 13 seconds.

1105

1106

* If these SDI-12 sensors are powered by external power source. It will add 300uA in the total current in SDI-12-CB.

1107

1108

(% style="display:none" %)

==== 3.5.5.2 Hardware Connection to SDI-12-CB ====

1113

1114

1115

[[image:image-20250224113030-20.jpeg]]

1116

1117

1118

==== 3.5.5.3 Commands set in SDI-12-CB and uplink payload ====

1119

1120

1121

[[image:image-20250224113056-21.jpeg]]

1122

1123

[[image:image-20250224113115-22.jpeg]]

1124

1125

1126

=== 3.6.6 Example 6 ~-~- Connect to ENTELECHY-EP_SDI-12 ===

1127

1128

==== 3.6.6.1 Reference Manual and Command ====

1129

1130

1131

* [[https:~~/~~/enviroprosoilprobes.com/wp-content/uploads/2019/11/ENTELECHY-EP_SDI-12-Commands.pdf>>url:https://enviroprosoilprobes.com/wp-content/uploads/2019/11/ENTELECHY-EP_SDI-12-Commands.pdf]]

1132

1133

* Commands to be used in PC and output.

1134

1135

1.check device address

1136

1137

2.change device address

3.check device ID

4.start measure

5.Get Meausre result

[[image:image-20250224113144-23.jpeg]]

1146

1147

1148

==== 3.6.6.2 Hardware Connection to SDI-12-CB ====

1149

1150

1151

[[image:image-20250224113203-24.jpeg]]

1152

1153

1154

==== 3.6.6.3 Commands set in SDI-12-CB and uplink payload ====

1155

1156

1157

[[image:image-20250224113224-25.jpeg]]

1158

1159

[[image:image-20250224113241-26.jpeg]]

1160

1161

1162

== 3.7 Test Uplink and Change Update Interval ==

1163

1164

1165

By default, Sensor will send uplinks (% style="color:blue" %)**every 2 hours**

1166

1167

User can use below commands to change the (% style="color:blue" %)**uplink interval**.

1168

1169

(% style="color:#037691" %)**AT+TDC=7200 ** (%%) ~/~/ Set Update Interval to 7200s

1170

1171

User can also push the button for more than 1 seconds to activate an uplink.

1172

1173

1174

== 3.8 Trggier an uplink by external interrupt ==

1175

1176

1177

SDI-12-CB has an external trigger interrupt function. Users can use the GPIO_EXTI pin to trigger the upload of data packets.

1178

1179

(% style="color:blue" %)**AT command:**

1180

1181

* (% style="color:#037691" %)**AT+INTMOD **(%%) ~/~/ Set the trigger interrupt mode

1182

1183

* (% style="color:#037691" %)**AT+INTMOD=0 **(%%) ~/~/ Disable Interrupt,as a digital input pin

1184

1185

* (% style="color:#037691" %)**AT+INTMOD=1 **(%%) ~/~/ Trigger by rising and falling edge

1186

1187

* (% style="color:#037691" %)**AT+INTMOD=2 **(%%) ~/~/ Trigger by falling edge

1188

1189

* (% style="color:#037691" %)**AT+INTMOD=3 **(%%) ~/~/ Trigger by rising edge

1190

1191

(% style="color:blue" %)**Downlink command:**(%%)** (% style="color:#037691" %)0x06(%%)**

1192

1193

Format: Command Code (0x06) followed by 3 bytes.

1194

1195

This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.

1196

1197

* Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode

1198

* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger

1199

1200

== 3.9 Set the output time ==

1201

1202

1203

Feature, Control the output 3V3 , 5V or 12V.

1204

1205

(% style="color:blue" %)**AT Command: AT+3V3T**

1206

1207

(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:474px" %)

1208

|=(% style="width: 154px;background-color:#4F81BD;color:white" %)**Command Example**|=(% style="width: 201px;background-color:#4F81BD;color:white" %)**Function**|=(% style="width: 119px;background-color:#4F81BD;color:white" %)**Response**

1209

|(% style="background-color:#f2f2f2; width:154px" %)AT+3V3T=?|(% style="background-color:#f2f2f2; width:201px" %)Show 3V3 open time.|(% style="background-color:#f2f2f2; width:116px" %)(((

0

OK

)))

|(% style="background-color:#f2f2f2; width:154px" %)AT+3V3T=0|(% style="background-color:#f2f2f2; width:201px" %)Normally open 3V3 power supply.|(% style="background-color:#f2f2f2; width:116px" %)(((

OK

default setting

)))

|(% style="background-color:#f2f2f2; width:154px" %)AT+3V3T=1000|(% style="background-color:#f2f2f2; width:201px" %)Close after a delay of 1000 milliseconds.|(% style="background-color:#f2f2f2; width:116px" %)(((

1218

OK

1219

)))

1220

|(% style="background-color:#f2f2f2; width:154px" %)AT+3V3T=65535|(% style="background-color:#f2f2f2; width:201px" %)Normally closed 3V3 power supply.|(% style="background-color:#f2f2f2; width:116px" %)(((

OK

)))

(% style="color:blue" %)**AT Command: AT+5VT**

1225

1226

(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:470px" %)

1227

|=(% style="width: 155px;background-color:#4F81BD;color:white" %)**Command Example**|=(% style="width: 196px;background-color:#4F81BD;color:white" %)**Function**|=(% style="width: 119px;background-color:#4F81BD;color:white" %)**Response**

1228

|(% style="background-color:#f2f2f2; width:155px" %)AT+5VT=?|(% style="background-color:#f2f2f2; width:196px" %)Show 5V open time.|(% style="background-color:#f2f2f2; width:114px" %)(((

0

OK

)))

|(% style="background-color:#f2f2f2; width:155px" %)AT+5VT=0|(% style="background-color:#f2f2f2; width:196px" %)Normally closed 5V power supply.|(% style="background-color:#f2f2f2; width:114px" %)(((

OK

default setting

)))

|(% style="background-color:#f2f2f2; width:155px" %)AT+5VT=1000|(% style="background-color:#f2f2f2; width:196px" %)Close after a delay of 1000 milliseconds.|(% style="background-color:#f2f2f2; width:114px" %)(((

1237

OK

1238

)))

1239

|(% style="background-color:#f2f2f2; width:155px" %)AT+5VT=65535|(% style="background-color:#f2f2f2; width:196px" %)Normally open 5V power supply.|(% style="background-color:#f2f2f2; width:114px" %)(((

OK

)))

(% style="color:blue" %)**AT Command: AT+12VT **

1244

1245

(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:443px" %)

1246

|=(% style="width: 156px;background-color:#4F81BD;color:white" %)**Command Example**|=(% style="width: 199px;background-color:#4F81BD;color:white" %)**Function**|=(% style="width: 88px;background-color:#4F81BD;color:white" %)**Response**

1247

|(% style="background-color:#f2f2f2; width:156px" %)AT+12VT=?|(% style="background-color:#f2f2f2; width:199px" %)Show 12V open time.|(% style="background-color:#f2f2f2; width:83px" %)(((

0

OK

)))

|(% style="background-color:#f2f2f2; width:156px" %)AT+12VT=0|(% style="background-color:#f2f2f2; width:199px" %)Normally closed 12V power supply.|(% style="background-color:#f2f2f2; width:83px" %)OK

1252

|(% style="background-color:#f2f2f2; width:156px" %)AT+12VT=500|(% style="background-color:#f2f2f2; width:199px" %)Close after a delay of 500 milliseconds.|(% style="background-color:#f2f2f2; width:83px" %)(((

OK

)))

== 3.10 Set the all data mode ==

1257

1258

1259

Feature, Set the all data mode.

1260

1261

(% style="color:blue" %)**AT Command: AT+ALLDATAMOD**

1262

1263

(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:437px" %)

1264

|=(% style="background-color:#4F81BD;color:white" %)**Command Example**|=(% style="background-color:#4F81BD;color:white" %)**Function**|=(% style="background-color:#4F81BD;color:white" %)**Response**

1265

|(% style="background-color:#f2f2f2" %)AT+ALLDATAMOD=?|(% style="background-color:#f2f2f2" %)Show current all data mode|(% style="background-color:#f2f2f2" %)(((

0

OK

)))

|(% style="background-color:#f2f2f2" %)AT+ALLDATAMOD=1|(% style="background-color:#f2f2f2" %)Set all data mode is 1.|(% style="background-color:#f2f2f2" %)OK

1270

1271

== 3.11 Set the payload version ==

1272

1273

1274

Feature, Set the payload version.

1275

1276

(% style="color:blue" %)**AT Command: AT+PAYVER**

1277

1278

(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:437px" %)

1279

|=(% style="width: 158px;background-color:#4F81BD;color:white" %)**Command Example**|=(% style="width: 192px;background-color:#4F81BD;color:white" %)**Function**|=(% style="width: 87px;background-color:#4F81BD;color:white" %)**Response**

1280

|(% style="background-color:#f2f2f2; width:158px" %)AT+PAYVER=?|(% style="background-color:#f2f2f2; width:192px" %)Show current payload version|(% style="background-color:#f2f2f2" %)(((

1

OK

)))

|(% style="background-color:#f2f2f2; width:158px" %)AT+PAYVER=5|(% style="background-color:#f2f2f2; width:192px" %)Set payload version is 5.|(% style="background-color:#f2f2f2" %)OK

1285

1286

== 3.12 Scheduled domain name resolution ==

1287

1288

1289

This command is used to set up scheduled domain name resolution

1290

1291

(% style="color:blue" %)**AT Command:**

1292

1293

* (% style="color:#037691" %)**AT+DNSTIMER=XX**(%%)** **~/~/ Unit: hour

1294

1295

After setting this command, domain name resolution will be performed regularly.

1296

1297

1298

== 3.13 Clock logging ==

1299

1300

1301

Sometimes when we deploy lots of end nodes in field. We want all sensors sample data at the same time, and upload these data together for analyze. In such case, we can use clock loging feature.

1302

1303

We can use this command to set the start time of data recording and the time interval to meet the requirements of the specific collection time of data.

1304

1305

* (% style="color:blue" %)**AT Command:**(%%) (% style="color:#037691" %)**AT+CLOCKLOG=a,b,c,d**

1306

1307

(% style="color:#037691" %)**a:**(%%)** 0:** Disable Clock logging. ** 1: **Enable Clock Logging

1308

1309

(% style="color:#037691" %)**b:**(%%)** **Specify First sampling start second: range **(0 ~~ 3599, 65535) ** ~/~/ (% style="color:red" %)**Note:**(%%)** **If parameter b is set to 65535, the log period starts after the node accesses the network and sends packets.

1310

1311

(% style="color:#037691" %)**c:**(%%)** **Specify the sampling interval: range **(0 ~~ 255 minutes)**

1312

1313

(% style="color:#037691" %)**d:**(%%)** **How many entries should be uplink on every TDC **(max 32)**

1314

1315

(% style="color:red" %)**Note: To disable clock recording, set the following parameters: AT+CLOCKLOG=1,65535,0,0**

1316

1317

[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/SPH01-NB_NB-IoT_Soil_pH_Sensor_User_Manual/WebHome/image-20240315141254-1.png?rev=1.1||alt="image-20240315141254-1.png"]]

**Example:**

**AT+CLOCKLOG=1,65535,1,5**

1322

1323

After the node sends the first packet, data is recorded to the memory at intervals of 1 minute. For each TDC uplink, the uplink load will include: battery information + the last 5 memory records (payload + timestamp).

1324

1325

[[image:image-20240730151506-2.png||height="586" width="718"]]

1326

1327

(% style="color:red" %)**Note: Users need to synchronize the server time before configuring this command. If the server time is not synchronized before this command is configured, the command takes effect only after the node is reset.**

1328

1329

1330

== 3.14 add Pulse_count, VDC_input, IDC_input (Since firmware V1.1.0) ==

1331

1332

1333

Feature, set to add Pulse counting, voltage acquisition, current acquisition.

1334

1335

(% style="color:red" %)**Note: When the pulse counting function is enabled using the AT+EXT command, the GPIO_EXTI pin will be used for counting rather than interrupting.**

1336

1337

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

1338

1339

(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:437px" %)

1340

|=(% style="width: 169px; background-color: rgb(79, 129, 189); color: white;" %)**Command Example**|=(% style="width: 162px; background-color: rgb(79, 129, 189); color: white;" %)**Function**|=(% style="width: 106px;background-color:#4F81BD;color:white" %)**Response**

1341

|(% style="background-color:#f2f2f2; width:169px" %)AT+EXT=?|(% style="background-color:#f2f2f2; width:162px" %)Show the current EXT configuration|(% style="background-color:#f2f2f2" %)(((

0,0,0(default)

OK

)))

|(% style="background-color:#f2f2f2; width:169px" %)AT+EXT=1,0,0|(% style="background-color:#f2f2f2; width:162px" %)Set to add Pulse counting|(% style="background-color:#f2f2f2" %)OK

1348

1349

(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)

1350

|=(% style="width: 163px; background-color: rgb(79, 129, 189); color: white;" %)**Command Example**|=(% style="width: 173px; background-color: rgb(79, 129, 189); color: white;" %)**Parameters**|=(% style="width: 174px; background-color: rgb(79, 129, 189); color: white;" %)**Explanation**

1351

|(% colspan="1" rowspan="3" style="background-color:#f2f2f2; width:163px" %)(((

AT+EXT=a,b,c

)))|(% style="background-color:#f2f2f2; width:173px" %)(((

1359

1360

1361

a: used to add pulse counting function.

1362

)))|(% style="background-color:#f2f2f2; width:170px" %)(((

1363

0: Disable pulse counting

1364

1: Enable pulse counting

1365

)))

1366

|(% style="background-color:#f2f2f2; width:173px" %)b: used to add voltage acquisition function.|(% style="background-color:#f2f2f2; width:170px" %)0: Disables voltage acquisition

1367

1: Enable voltage acquisition

1368

|(% style="background-color:#f2f2f2; width:173px" %)c: used to add current acquisition function.|(% style="background-color:#f2f2f2; width:170px" %)(((

1369

0: Disable current acquisition

1370

1: Enable current acquisition

1371

)))

1372

1373

(% style="color:blue" %)**Downlink Command:**(%%) (% style="color:#037691" %)**0xAD aa bb cc**

1374

1375

Format: Command Code (0xAD) followed by 3 bytes, aa,bb,cc correspond one-to-one to the parameters of AT+EXT=a,b,c.

**Example:**

* Downlink paylaod: AD 00 00 00 ~/~/Equal to AT+EXT=0,0,0 Pulse counting, voltage acquisition, and current acquisition are not enabled.

1380

* Downlink paylaod: AD 01 00 00 ~/~/Equal to AT+EXT=1,0,0 Enable pulse counting.

1381

* Downlink paylaod: AD 01 01 01 ~/~/Equal to AT+EXT=1,1,1 Pulse counting, voltage acquisition, and current acquisition are enabled.

1382

1383

== 3.15 Set the pulse count value (Since firmware V1.1.0) ==

1384

1385

1386

Feature, set the initial value of the pulse count.

1387

1388

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

1389

1390

(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:437px" %)

1391

|=(% style="width: 169px; background-color: rgb(79, 129, 189); color: white;" %)**Command Example**|=(% style="width: 172px; background-color: rgb(79, 129, 189); color: white;" %)**Function**|=(% style="width: 96px;background-color:#4F81BD;color:white" %)**Response**

1392

|(% style="background-color:#f2f2f2; width:169px" %)AT+SETCNT=10|(% style="background-color:#f2f2f2; width:162px" %)(((

1393

Initialize the pulse count value to 10.

1394

)))|(% style="background-color:#f2f2f2" %)OK

1395

|(% style="background-color:#f2f2f2; width:169px" %)AT+SETCNT=50|(% style="background-color:#f2f2f2; width:162px" %)Initialize the pulse count value to 50.|(% style="background-color:#f2f2f2" %)OK

1396

1397

(% style="color:blue" %)**Downlink Command:**(%%) (% style="color:#037691" %)**0xA9**

1398

1399

Format: Command Code (0xA9) followed by 4 bytes.

**Example:**

* Downlink paylaod: A9 00 00 0A ~/~/Equal to AT+SETCNT=10

1404

* Downlink paylaod: A9 00 00 32 ~/~/Equal to AT+SETCNT=50

1405

1406

== 3.16 Set the downlink debugging mode(Since firmware v1.1.0) ==

1407

1408

1409

Feature: Set the conversion between the standard version and 1T version downlinks.

1410

1411

(% style="color:blue" %)**AT command: AT+DOWNTE**

1412

1413

(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)

1414

|=(% style="width: 138px; background-color: rgb(79, 129, 189); color: white;" %)**Command Example**|=(% style="width: 143px; background-color: rgb(79, 129, 189); color: white;" %)**Function/Parameters**|=(% style="width: 229px; background-color: rgb(79, 129, 189); color: white;" %)**Response/Explanation**

1415

|(% style="width:134px" %)AT+DOWNTE=?|(% style="width:143px" %)Get current Settings|(% style="width:229px" %)(((

0,0 (default)

OK

)))

|(% colspan="1" rowspan="2" style="width:134px" %)(((

AT+DOWNTE=a,b

)))|(% style="width:143px" %)**a**: Set the conversion between the downlink of the standard version and 1T version|(% style="width:229px" %)(((

1426

**0**: Set the downlink of the standard version.

1427

**1**: Set the downlink of the 1T version(ThingsEye platform)

1428

)))

1429

|(% style="width:143px" %)**b**: Enable/Disable downlink debugging|(% style="width:229px" %)(((

1430

**0**: Disable downlink debugging mode.

1431

**1**: Enable downlink debugging mode, users can see the original downlink reception.

)))

**Example:**

* AT+DOWNTE=0,1 ~/~/ Set to standard version downlink, and enable downlink debugging.

1437

* AT+DOWNTE=1,1 ~/~/ Set to 1T version downlink, and enable downlink debugging.

1438

1439

(% style="color:blue" %)**Downlink Command: **

1440

1441

No downlink commands for feature

1442

1443

1444

= 4. Battery & Power Consumption =

1445

1446

1447

SDI-12-CB use ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace.

1448

1449

[[**Battery Info & Power Consumption Analyze**>>http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20calculate%20the%20battery%20life%20of%20Dragino%20sensors%3F/]] .

1450

1451

1452

= 5. Firmware update =

1453

1454

1455

User can change device firmware to::

1456

1457

* Update with new features.

* Fix bugs.

Firmware and changelog can be downloaded from : **[[Firmware download link>>https://www.dropbox.com/scl/fo/1mzflb9p9kx15btnc11gr/ALbRqWUdMNWLJGI2hdDviKI/SDI-12-CB?dl=0&rlkey=ku98jt8u30coqy66saebai2co&subfolder_nav_tracking=1]]**

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Methods to Update Firmware:

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* (Recommended way) OTA firmware update via BLE: [[**Instruction**>>url:http://wiki.dragino.com/xwiki/bin/view/Main/BLE_Firmware_Update_NB_Sensors_BC660K-GL/]].

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* Update through UART TTL interface : **[[Instruction>>http://wiki.dragino.com/xwiki/bin/view/Main/UART_Access_for_NB_ST_BC660K-GL/#H4.2UpdateFirmware28Assumethedevicealreadyhaveabootloader29]]**.

= 6. FAQ =

== 6.1 How can I access the BG95-NGFF AT Commands? ==

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User can access to BG95-NGFF directly and send AT Commands.

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[[See BG95-NGFF AT Command set>>https://www.dropbox.com/scl/fo/1mzflb9p9kx15btnc11gr/ALDWTvDjuVoXvDJuYWCRh5U/Vendor%20Datasheet/BG95?dl=0&rlkey=ku98jt8u30coqy66saebai2co&subfolder_nav_tracking=1]]

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== 6.2 How to configure the device through the MQTT subscription function? ==

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Subscription content: {AT COMMAND}

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(% style="color:#037691" %)**Example:**

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Setting AT+5VT=500 through Node-RED requires MQTT to send the content {AT+5VT=500}.

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[[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-NB%2C-NS_RS485%2CUART_to_NB-IoT_Converter_User_Manual/WebHome/1698140180821-486.png?rev=1.1||alt="1698140180821-486.png"]]

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The serial port displays:

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[[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-NB%2C-NS_RS485%2CUART_to_NB-IoT_Converter_User_Manual/WebHome/image-20231024174641-2.png?width=531&height=267&rev=1.1||alt="image-20231024174641-2.png"]]

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== 6.3 General Manual for -CB , -CS models ==

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Users can follow the instructions in this [[link>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Manual%20for%20-CB%20%2C%20-CS%20models/]] to see how to configure to connect to different servers.

= 7. Order Info =

Part Number: (% style="color:blue" %)**SDI-12-CB-XX-YY**

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

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* (% style="color:#037691" %)**GE**(%%): General version ( Exclude SIM card)

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* (% style="color:#037691" %)**1T**(%%): with 1NCE* 10 years 500MB SIM card and Pre-configure to ThingsEye server

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(% style="color:blue" %)**YY: The grand connector hole size**

* M12: M12 hole

* M16: M16 hole

= 8. Packing Info =

(% style="color:#037691" %)**Package Includes**:

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* SDI-12-CB SDI-12 to NB-IoT/LTE-M Converter x 1

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* External antenna x 1

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(% style="color:#037691" %)**Dimension and weight**:

* Device Size: cm

* Device Weight: g

* Package Size / pcs : cm

* Weight / pcs : g

= 9. Support =

* Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.

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* Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to [[Support@dragino.cc>>mailto:Support@dragino.cc]].

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Wiki source code of SDI-12-CB -- SDI-12 to NB-IoT/LTE-M Converter User Manual

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