Changes for page LT-22222-L -- LoRa I/O Controller User Manual

Last modified by Saxer Lin on 2025/04/15 17:24

From version < 95.1 >

edited by Bei Jinggeng
on 2022/08/24 15:58

To version < 101.3 >

edited by Xiaoling
on 2022/10/25 15:22

Change comment: There is no comment for this version

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- image-20221008095908-1.png

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Author

@@ -1,1 +1,1 @@
--XWiki.Bei
++XWiki.Xiaoling

Content

@@ -15,13 +15,16 @@
  = 1.Introduction =
++
  == 1.1 What is LT Series I/O Controller ==
  (((
++(((
  The Dragino (% style="color:blue" %)**LT series I/O Modules**(%%) are Long Range LoRaWAN I/O Controller. It contains different I/O Interfaces such as:** (% style="color:blue" %)analog current Input, analog voltage input(%%)**(% style="color:blue" %), **relay output**, **digital input**(%%) and (% style="color:blue" %)**digital output**(%%) etc. The LT I/O Modules are designed to simplify the installation of I/O monitoring.
  )))
++)))
  (((
  The LT I/O Controllers allows the user to send data and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, smartphone detection, building automation, and so on.
@@ -57,7 +57,7 @@
  (((
--**Hardware System:**
++(% style="color:#037691" %)**Hardware System:**
  )))
  * (((
@@ -82,7 +82,7 @@
  (((
--**Interface for Model: LT22222-L:**
++(% style="color:#037691" %)**Interface for Model: LT22222-L:**
  )))
  * (((
@@ -107,7 +107,7 @@
  (((
--**LoRa Spec:**
++(% style="color:#037691" %)**LoRa Spec:**
  )))
  * (((
@@ -210,10 +210,14 @@
  = 2. Power ON Device =
++(((
  The LT controller can be powered by 7 ~~ 24V DC power source. Connect VIN to Power Input V+ and GND to power input V- to power the LT controller.
++)))
  (((
  PWR will on when device is properly powered.
++
++
  )))
  [[image:1653297104069-180.png]]
@@ -222,6 +222,7 @@
  = 3. Operation Mode =
++
  == 3.1 How it works? ==
@@ -266,12 +266,12 @@
  Input these keys in the LoRaWAN Server portal. Below is TTN screen shot:
--Add APP EUI in the application.
++**Add APP EUI in the application.**
  [[image:1653297955910-247.png||height="321" width="716"]]
--Add APP KEY and DEV EUI
++**Add APP KEY and DEV EUI**
  [[image:1653298023685-319.png]]
@@ -279,6 +279,8 @@
  (((
  (% style="color:blue" %)**Step 2**(%%): Power on LT and it will auto join to the TTN network. After join success, it will start to upload message to TTN and user can see in the panel.
++
++
  )))
  [[image:1653298044601-602.png||height="405" width="709"]]
@@ -300,7 +300,9 @@
  === 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
++(((
  The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default.
++)))
  [[image:image-20220523174024-3.png]]
@@ -316,7 +316,7 @@
  * DI is for digital input. DIx=1: high or float, DIx=0: low.
  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
--(% style="color:red" %)Note: DI3 and DO3 bit are not valid for LT-22222-L
++(% style="color:red" %)**Note: DI3 and DO3 bit are not valid for LT-22222-L**
  For example if payload is: [[image:image-20220523175847-2.png]]
@@ -354,7 +354,9 @@
  === 3.3.2 AT+MOD~=2, (Double DI Counting) ===
++(((
  **For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
++)))
  (((
  Total : 11 bytes payload
@@ -374,7 +374,7 @@
  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
  (((
--(% style="color:red" %)Note: DO3 bit is not valid for LT-22222-L.
++(% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L.**
  )))
  (((
@@ -386,16 +386,22 @@
  (% class="box infomessage" %)
  (((
  (((
++(((
  **AT+MOD=2**
++)))
++(((
  **ATZ**
  )))
  )))
++)))
  (((
  (% style="color:#4f81bd" %)**AT Commands for counting:**
++
++
  )))
  (((
@@ -437,7 +437,7 @@
  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
  (((
--(% style="color:red" %)Note: DO3 is not valid for LT-22222-L.
++(% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
  )))
@@ -448,11 +448,15 @@
  (% class="box infomessage" %)
  (((
  (((
++(((
  **AT+MOD=3**
++)))
++(((
  **ATZ**
  )))
  )))
++)))
  (((
  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
@@ -463,9 +463,13 @@
  === 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
++(((
  **LT22222-L**: This mode the DI1 is used as a counting pin.
++)))
++(((
  The AVI1 is also used for counting. AVI1 is used to monitor the voltage. It will check the voltage **every 60s**, if voltage is higher or lower than VOLMAX mV, the AVI1 Counting increase 1, so AVI1 counting can be used to measure a machine working hour.
++)))
  [[image:image-20220523181903-8.png]]
@@ -481,7 +481,7 @@
  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
  (((
--(% style="color:red" %)Note: DO3 is not valid for LT-22222-L.
++(% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
  )))
  (((
@@ -493,14 +493,17 @@
  (% class="box infomessage" %)
  (((
  (((
++(((
  **AT+MOD=4**
++)))
++(((
  **ATZ**
  )))
  )))
++)))
--
  (((
  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
  )))
@@ -542,7 +542,7 @@
  )))
  (((
--(% style="color:red" %)Note: DO3 is not valid for LT-22222-L.
++(% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
  )))
  (((
@@ -554,11 +554,15 @@
  (% class="box infomessage" %)
  (((
  (((
++(((
  **AT+MOD=5**
++)))
++(((
  **ATZ**
  )))
  )))
++)))
  (((
  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
@@ -588,6 +588,7 @@
  Format: AT+AVLIM=<AV1_LIMIT_LOW>,< AV1_LIMIT_HIGH>,<AV2_LIMIT_LOW>,< AV2_LIMIT_HIGH>
++
  **Example:**
  AT+AVLIM=3000,6000,0,2000   (If AVI1 voltage lower than 3v or higher than 6v.  or AV2 voltage is higher than 2v, LT will trigger Uplink)
@@ -600,6 +600,7 @@
  Format: AT+ACLIM=<AC1_LIMIT_LOW>,< AC1_LIMIT_HIGH>,<AC2_LIMIT_LOW>,< AC2_LIMIT_HIGH>
++
  **Example:**
  AT+ACLIM=10000,15000,0,0   (If ACI1 voltage lower than 10mA or higher than 15mA, trigger an uplink)
@@ -618,6 +618,7 @@
  AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
++
  (% style="color:#037691" %)**Downlink Command to set Trigger Condition:**
  Type Code: 0xAA. Downlink command same as AT Command **AT+AVLIM, AT+ACLIM**
@@ -666,6 +666,7 @@
  10100000: Means the system has configure to use the trigger: AC1_LOW and AV2_LOW
++
  (% style="color:#4f81bd" %)**TRI Status1**(%%) is a combination to show which condition is trigger. Totally 1byte as below
  [[image:image-20220524090249-3.png]]
@@ -677,6 +677,7 @@
  10000000: Means this packet is trigger by AC1_LOW. Means voltage too low.
++
  (% style="color:#4f81bd" %)**TRI_DI FLAG+STA **(%%)is a combination to show which condition is trigger. Totally 1byte as below
  [[image:image-20220524090456-4.png]]
@@ -690,6 +690,7 @@
  00000101: Means both DI1 and DI2 trigger are enabled.
++
  (% style="color:#4f81bd" %)**Enable/Disable MOD6 **(%%): 0x01: MOD6 is enable. 0x00: MOD6 is disable.
  Downlink command to poll MOD6 status:
@@ -700,12 +700,13 @@
++
  === 3.3.7 Payload Decoder ===
  (((
--**Decoder for TTN/loraserver/ChirpStack**:  [[https:~~/~~/www.dropbox.com/sh/wtrzu7avdtkmn3z/AACK5NwOMkU9jnvf1uCMuqrVa?dl=0>>https://www.dropbox.com/sh/wtrzu7avdtkmn3z/AACK5NwOMkU9jnvf1uCMuqrVa?dl=0]]
++**Decoder for TTN/loraserver/ChirpStack**:  [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
  )))
@@ -713,11 +713,15 @@
  == 3.4 Configure LT via AT or Downlink ==
++(((
  User can configure LT I/O Controller via AT Commands or LoRaWAN Downlink Commands
++)))
  (((
++(((
  There are two kinds of Commands:
  )))
++)))
  * (% style="color:#4f81bd" %)**Common Commands**(%%): They should be available for each sensor, such as: change uplink interval, reset device. For firmware v1.5.4, user can find what common commands it supports: [[End Device AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
@@ -726,7 +726,9 @@
  === 3.4.1 Common Commands ===
++(((
  They should be available for each of Dragino Sensors, such as: change uplink interval, reset device. For firmware v1.5.4, user can find what common commands it supports: [[End Device AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
++)))
@@ -785,6 +785,7 @@
  **0x08 FF     **~/~/ Poll an uplink
++
  **Example**: 0x08FF, ask device to send an Uplink
@@ -949,7 +949,7 @@
  (((
--(% style="color:red" %)Note: ATDC setting must be more than 5min
++(% style="color:red" %)**Note: ATDC setting must be more than 5min**
  )))
@@ -977,11 +977,11 @@
  [[image:image-20220524092754-5.png]]
  (((
--(% style="color:red" %)Note: For LT-22222-L, there is no DO3, the last byte can use any value.
++(% style="color:red" %)**Note: For LT-22222-L, there is no DO3, the last byte can use any value.**
  )))
  (((
--(% style="color:red" %)Device will upload a packet if downlink code executes successfully.
++(% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
  )))
@@ -1030,7 +1030,7 @@
           Latching time. Unit: ms
--(% style="color:red" %)Device will upload a packet if downlink code executes successfully.
++(% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
  **Example payload:**
@@ -1079,7 +1079,7 @@
  [[image:image-20220524093724-9.png]]
  )))
--(% style="color:red" %)Device will upload a packet if downlink code executes successfully.
++(% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
@@ -1110,12 +1110,12 @@
  (% style="color:#4f81bd" %)**Third Byte(bb)**(%%): Control Method and Ports status:
--[[image:image-20220714135731-1.png||height="406" width="627"]]
++[[image:image-20221008095908-1.png||height="364" width="564"]]
  (% style="color:#4f81bd" %)**Fourth/Fifth/Sixth/Seventh Bytes(cc)**(%%): Latching time. Unit: ms
--(% style="color:red" %)Device will upload a packet if downlink code executes successfully.
++(% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
  **Example payload:**
@@ -1210,6 +1210,8 @@
  (((
  range: aa bb cc:0 to 16777215,  (unit:second)
++
++
  )))
@@ -1230,6 +1230,8 @@
  (((
++
++
  ==== 3.4.2.21 Encrypted payload ====
@@ -1240,6 +1240,8 @@
  **AT+DECRYPT=0  **~/~/Encrypt when uploading payload (default)
++
++
  ==== 3.4.2.22 Get sensor value ====
@@ -1250,6 +1250,8 @@
  **AT+GETSENSORVALUE=1  **~/~/The serial port gets the current sensor reading and uploads it.
++
++
  ==== 3.4.2.23 Resets the downlink packet count ====
@@ -1260,6 +1260,8 @@
  **AT+DISFCNTCHECK=1  **~/~/When the downlink packet count sent by the server is less than the node downlink packet count or exceeds 16384, the node resets the downlink packet count and keeps it consistent with the server downlink packet count.
++
++
  ==== 3.4.2.24 When the limit bytes are exceeded, upload in batches ====
@@ -1275,6 +1275,8 @@
  **0x21 00 01 **         ~/~/ Set  the DISMACANS=1
++
++
  ==== 3.4.2.25 Copy downlink to uplink ====
@@ -1284,10 +1284,13 @@
  Example：**aa xx xx xx xx**         ~/~/ aa indicates whether the configuration has changed, 00 is yes, 01 is no; xx xx xx xx are the bytes sent.
++
  [[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"]]
  For example, sending 11 22 33 44 55 66 77 will return invalid configuration 00 11 22 33 44 55 66 77.
++
++
  [[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"]]
  For example, if 01 00 02 58 is issued, a valid configuration of 01 01 00 02 58 will be returned.
@@ -1300,10 +1300,12 @@
  * (((
  (% style="color:#037691" %)**Downlink Payload**(%%)**:**
--**26 01  **  ~/~/ Downlink 26 01 can query device upload frequency, frequency band, software version number, TDC time.
++**26 01  **   ~/~/  Downlink 26 01 can query device upload frequency, frequency band, software version number, TDC time.
++
++
  )))
--Example：
++**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"]]
@@ -1409,10 +1409,10 @@
  )))
  * (((
--Connect sensor’s output to DI1-
++Connect sensor's output to DI1-
  )))
  * (((
--Connect sensor’s VCC to DI1+.
++Connect sensor's VCC to DI1+.
  )))
  (((
@@ -1420,11 +1420,11 @@
  )))
  (((
--[[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 1K.**
++[[image:1653968155772-850.png||height="23" width="19"]]**= DI1**+** / 1K.**
  )))
  (((
--If DI1+ = 12v, the [[image:1653968155772-850.png||height="23" width="19"]]= 12mA , So the LT-22222-L will be able to detect this active signal.
++If** DI1+ **= **12v**, the [[image:1653968155772-850.png||height="23" width="19"]]= 12mA , So the LT-22222-L will be able to detect this active signal.
  )))
  (((
@@ -1442,10 +1442,10 @@
  )))
  * (((
--Connect sensor’s output to DI1+
++Connect sensor's output to DI1+
  )))
  * (((
--Connect sensor’s GND DI1-.
++Connect sensor's GND DI1-.
  )))
  (((
@@ -1475,10 +1475,10 @@
  )))
  * (((
--Connect sensor’s output to DI1+ with a serial 50K resistor
++Connect sensor's output to DI1+ with a serial 50K resistor
  )))
  * (((
--Connect sensor’s GND DI1-.
++Connect sensor's GND DI1-.
  )))
  (((
@@ -1519,13 +1519,13 @@
  We take the wind speed sensor as an example for reference only.
--**Specifications of the wind speed sensor:**
++(% style="color:blue" %)**Specifications of the wind speed sensor:**
--Red:      12~~24v
++**Red:      12~~24v**
--Yellow:  4~~20mA
++**Yellow:  4~~20mA**
--Black:   GND
++**Black:   GND**
  **Connection diagram:**
@@ -1545,6 +1545,7 @@
  [[image:image-20220524100215-9.png]]
++
  [[image:image-20220524100215-10.png||height="382" width="723"]]
@@ -1562,8 +1562,14 @@
  == 4.1 Access AT Command ==
++(((
  LT supports AT Command set. User can use a USB to TTL adapter plus the 3.5mm Program Cable to connect to LT for using AT command, as below.
++)))
++(((
++
++)))
++
  [[image:1653358238933-385.png]]
@@ -1591,7 +1591,7 @@
  )))
  (((
--AT+<CMD>=?       : Get the value
++AT+<CMD>=?       :  Get the value
  )))
  (((
@@ -1619,11 +1619,11 @@
  )))
  (((
--AT+APPSKEY: Get or Set the Application Session Key
++AT+APPSKEY:  Get or Set the Application Session Key
  )))
  (((
--AT+APPEUI: Get or Set the Application EUI
++AT+APPEUI:    Get or Set the Application EUI
  )))
  (((
@@ -1635,7 +1635,7 @@
  )))
  (((
--AT+DR: Get or Set the Data Rate. (0-7 corresponding to DR_X)
++AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
  )))
  (((
@@ -1671,7 +1671,7 @@
  )))
  (((
--AT+NJM: Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
++AT+NJM:    Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
  )))
  (((
@@ -1715,7 +1715,7 @@
  )))
  (((
--AT+VER: Get current image version and Frequency Band
++AT+VER:  Get current image version and Frequency Band
  )))
  (((
@@ -1723,7 +1723,7 @@
  )))
  (((
--AT+CFS: Get confirmation status of the last AT+SEND (0-1)
++AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
  )))
  (((
@@ -1772,40 +1772,42 @@
  (((
--**If device has not joined network yet:**
++(((
++(% style="color:blue" %)**If device has not joined network yet:**
  )))
++)))
  (((
--(% style="background-color:#dcdcdc" %)123456
++(% style="background-color:#dcdcdc" %)**123456**
  )))
  (((
--(% style="background-color:#dcdcdc" %)AT+FDR
++(% style="background-color:#dcdcdc" %)**AT+FDR**
  )))
  (((
--(% style="background-color:#dcdcdc" %)123456
++(% style="background-color:#dcdcdc" %)**123456**
  )))
  (((
--(% style="background-color:#dcdcdc" %)AT+NJM=0
++(% style="background-color:#dcdcdc" %)**AT+NJM=0**
  )))
  (((
--(% style="background-color:#dcdcdc" %)ATZ
++(% style="background-color:#dcdcdc" %)**ATZ**
  )))
  (((
--**If device already joined network:**
++(% style="color:blue" %)**If device already joined network:**
  )))
  (((
--(% style="background-color:#dcdcdc" %)AT+NJM=0
++(% style="background-color:#dcdcdc" %)**AT+NJM=0**
  )))
  (((
--(% style="background-color:#dcdcdc" %)ATZ
++(% style="background-color:#dcdcdc" %)**ATZ**
  )))
@@ -1815,55 +1815,57 @@
  (((
--(% style="background-color:#dcdcdc" %)123456(%%)     Enter Password to have AT access.
++(((
++(% style="background-color:#dcdcdc" %)**123456**(%%)        ~/~/ Enter Password to have AT access.
  )))
++)))
  (((
--(% style="background-color:#dcdcdc" %) AT+FDR(%%)   Reset Parameters to Factory Default, Keys Reserve
++(% style="background-color:#dcdcdc" %)** AT+FDR**(%%)     ~/~/ Reset Parameters to Factory Default, Keys Reserve
  )))
  (((
--(% style="background-color:#dcdcdc" %) 123456(%%)     Enter Password to have AT access.
++(% style="background-color:#dcdcdc" %)** 123456**(%%)       ~/~/ Enter Password to have AT access.
  )))
  (((
--(% style="background-color:#dcdcdc" %) AT+CLASS=C(%%) Set to work in CLASS C
++(% style="background-color:#dcdcdc" %)** AT+CLASS=C**(%%)   ~/~/ Set to work in CLASS C
  )))
  (((
--(% style="background-color:#dcdcdc" %) AT+NJM=0(%%)    Set to ABP mode
++(% style="background-color:#dcdcdc" %)** AT+NJM=0**(%%)     ~/~/ Set to ABP mode
  )))
  (((
--(% style="background-color:#dcdcdc" %) AT+ADR=0(%%)    Set the Adaptive Data Rate Off
++(% style="background-color:#dcdcdc" %) **AT+ADR=0**(%%)     ~/~/ Set the Adaptive Data Rate Off
  )))
  (((
--(% style="background-color:#dcdcdc" %) AT+DR=5(%%)       Set Data Rate
++(% style="background-color:#dcdcdc" %)** AT+DR=5**(%%)       ~/~/ Set Data Rate
  )))
  (((
--(% style="background-color:#dcdcdc" %) AT+TDC=60000(%%)              Set transmit interval to 60 seconds
++(% style="background-color:#dcdcdc" %)** AT+TDC=60000**(%%)              ~/~/ Set transmit interval to 60 seconds
  )))
  (((
--(% style="background-color:#dcdcdc" %) AT+CHS=868400000(%%)      Set transmit frequency to 868.4Mhz
++(% style="background-color:#dcdcdc" %)** AT+CHS=868400000**(%%)     ~/~/ Set transmit frequency to 868.4Mhz
  )))
  (((
--(% style="background-color:#dcdcdc" %) AT+RX2FQ=868400000(%%)  Set RX2Frequency to 868.4Mhz (according to the result from server)
++(% style="background-color:#dcdcdc" %)** AT+RX2FQ=868400000**(%%)    ~/~/ Set RX2Frequency to 868.4Mhz (according to the result from server)
  )))
  (((
--(% style="background-color:#dcdcdc" %) AT+RX2DR=5(%%)                  Set RX2DR to match the downlink DR from server. see below
++(% style="background-color:#dcdcdc" %)** AT+RX2DR=5**(%%)** **                   ~/~/ Set RX2DR to match the downlink DR from server. see below
  )))
  (((
--(% style="background-color:#dcdcdc" %) AT+DADDR=26 01 1A F1 (%%)  Set Device Address to 26 01 1A F1, this ID can be found in the LoRa Server portal.
++(% style="background-color:#dcdcdc" %)** AT+DADDR=26 01 1A F1** (%%)     ~/~/ Set Device Address to 26 01 1A F1, this ID can be found in the LoRa Server portal.
  )))
  (((
--(% style="background-color:#dcdcdc" %) ATZ         (%%)                             Reset MCU
++(% style="background-color:#dcdcdc" %)** ATZ**         (%%)                                 ~/~/ Reset MCU
  )))
@@ -1873,11 +1873,15 @@
  )))
  (((
--(% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
--2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
--3. Make sure SF / bandwidth setting in LG01/LG02 match the settings of AT+DR. refer [[this link>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.
--4. The command AT+RX2FQ and AT+RX2DR is to let downlink work. to set the correct parameters, user can check the actually downlink parameters to be used. As below. Which shows the RX2FQ should use 868400000 and RX2DR should be 5
++**~1. Make sure the device is set to ABP mode in the IoT Server.**
++**2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.**
++
++**3. Make sure SF / bandwidth setting in LG01/LG02 match the settings of AT+DR. refer [[this link>>url:http://www.dragino.com/downloads/index.php?
++dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.**
++
++**4. The command AT+RX2FQ and AT+RX2DR is to let downlink work. to set the correct parameters, user can check the actually downlink parameters to be used. As below. Which shows the RX2FQ should use 868400000 and RX2DR should be 5**
++
  )))
@@ -1893,12 +1893,15 @@
  === 4.2.3 Change to Class A ===
--If sensor JOINED
--(% style="background-color:#dcdcdc" %)AT+CLASS=A
--ATZ
++(((
++(% style="color:blue" %)If sensor JOINED:
++(% style="background-color:#dcdcdc" %)**AT+CLASS=A
++ATZ**
++)))
++
  = 5. FAQ =
@@ -1918,12 +1918,14 @@
  (((
  (% style="color:blue" %)**Step1**(%%)**:** Download [[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]].
--(% style="color:blue" %)**Step2**(%%)**:** Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
++(% style="color:blue" %)**Step2**(%%)**:** Download the [[LT Image files>>url:https://www.dropbox.com/sh/g99v0fxcltn9r1y/AADKXQ2v5ZT-S3sxdmbvE7UAa/LT-22222-L/image?dl=0&subfolder_nav_tracking=1]].
  (% style="color:blue" %)**Step3**(%%)**:** Open flashloader; choose the correct COM port to update.
++(((
  (% style="color:blue" %)**For LT-22222-L**(%%):
  Hold down the PRO button and then momentarily press the RST reset button and the (% style="color:red" %)**DO1 led**(%%) will change from OFF to ON. When (% style="color:red" %)**DO1 LED**(%%) is on, it means the device is in download mode.
++)))
  )))
@@ -1974,6 +1974,7 @@
  (((
  Assume we have a LG02 working in the frequency 868400000 now , below is the step.
++
  )))
  )))
@@ -1980,10 +1980,14 @@
  (((
  (% style="color:blue" %)**Step1**(%%):  Log in TTN, Create an ABP device in the application and input the network session key (NETSKEY), app session key (APPSKEY) from the device.
++
++
  )))
  (((
  [[image:1653360231087-571.png||height="401" width="727"]]
++
++
  )))
  (((
@@ -1991,21 +1991,23 @@
  )))
++
  (((
  (% style="color:blue" %)**Step2**(%%)**:  **Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands:
++
++
  )))
  (((
--(% style="background-color:#dcdcdc" %)123456 (%%)     Enter Password to have AT access.
--(% style="background-color:#dcdcdc" %)AT+FDR(%%)     Reset Parameters to Factory Default, Keys Reserve
--(% style="background-color:#dcdcdc" %)123456 (%%)     Enter Password to have AT access.
--(% style="background-color:#dcdcdc" %)AT+NJM=0 (%%)    Set to ABP mode
--(% style="background-color:#dcdcdc" %)AT+ADR=0 (%%)    Set the Adaptive Data Rate Off
--(% style="background-color:#dcdcdc" %)AT+DR=5 (%%)      Set Data Rate (Set AT+DR=3 for 915 band)
--(% style="background-color:#dcdcdc" %)AT+TDC=60000 (%%)         Set transmit interval to 60 seconds
--(% style="background-color:#dcdcdc" %)AT+CHS=868400000(%%)  Set transmit frequency to 868.4Mhz
--(% style="background-color:#dcdcdc" %)AT+DADDR=26 01 1A F1(%%)    Set Device Address to 26 01 1A F1
--(% style="background-color:#dcdcdc" %)ATZ        (%%)                              Reset MCU
++(% style="background-color:#dcdcdc" %)**123456** (%%)   :   Enter Password to have AT access.
++(% style="background-color:#dcdcdc" %)**AT+FDR**(%%)   :   Reset Parameters to Factory Default, Keys Reserve
++(% style="background-color:#dcdcdc" %)**AT+NJM=0** (%%) :   Set to ABP mode
++(% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%)  :  Set the Adaptive Data Rate Off
++(% style="background-color:#dcdcdc" %)**AT+DR=5** (%%)    :   Set Data Rate (Set AT+DR=3 for 915 band)
++(% style="background-color:#dcdcdc" %)**AT+TDC=60000 **(%%)   :      Set transmit interval to 60 seconds
++(% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) : Set transmit frequency to 868.4Mhz
++(% style="background-color:#dcdcdc" %)**AT+DADDR=26 01 1A F1**(%%)  :  Set Device Address to 26 01 1A F1
++(% style="background-color:#dcdcdc" %)**ATZ**        (%%)                              :  Reset MCU
  )))
@@ -2048,7 +2048,19 @@
++== 5.7 Can i set up LT-22222-L as a NC(Normal Close) Relay? ==
++
++
++LT-22222-L built-in relay is NO (Normal Open). User can use an external relay to achieve Normal Close purpose. Diagram as below:
++
++
++[[image:image-20221006170630-1.png||height="610" width="945"]]
++
++
++
  = 6. Trouble Shooting =
++
++
  )))
  (((
@@ -2108,6 +2108,8 @@
  * (% style="color:red" %)**IN865**(%%):   LT with frequency bands IN865
  * (% style="color:red" %)**CN779**(%%):  LT with frequency bands CN779
++
++
  = 8. Packing Info =
@@ -2125,6 +2125,8 @@
  * Package Size / pcs : 14.5 x 8 x 5 cm
  * Weight / pcs : 170g
++
++
  = 9. Support =
@@ -2145,5 +2145,3 @@
  * 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]]
  * [[Datasheet, Document Base>>https://www.dropbox.com/sh/gxxmgks42tqfr3a/AACEdsj_mqzeoTOXARRlwYZ2a?dl=0]]
  * [[Hardware Source>>url:https://github.com/dragino/Lora/tree/master/LT/LT-33222-L/v1.0]]
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