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

Last modified by Mengting Qiu on 2025/06/04 18:42

From 66.1 to 65.1 From 66.28 to 66.27

From version 66.27

edited by Xiaoling
on 2022/05/24 14:07

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To version 66.1

edited by Xiaoling
on 2022/05/24 10:48

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@@ -45,114 +45,44 @@
  == 1.2  Specifications ==
--(((
  **Hardware System:**
--)))
--* (((
--STM32L072CZT6 MCU
--)))
--* (((
--SX1276/78 Wireless Chip
--)))
--* (((
--(((
--Power Consumption:
--)))
++* STM32L072CZT6 MCU
++* SX1276/78 Wireless Chip
++* Power Consumption:
++** Idle: 4mA@12v
++** 20dB Transmit: 34mA@12v
--* (((
--Idle: 4mA@12v
--)))
--* (((
--20dB Transmit: 34mA@12v
--)))
--)))
--
--(((
  **Interface for Model: LT22222-L:**
--)))
--* (((
--2 x Digital dual direction Input (Detect High/Low signal, Max: 50v, or 220v with optional external resistor)
--)))
--* (((
--2 x Digital Output (NPN output. Max pull up voltage 36V,450mA)
--)))
--* (((
--2 x Relay Output (5A@250VAC / 30VDC)
--)))
--* (((
--2 x 0~~20mA Analog Input (res:0.01mA)
--)))
--* (((
--2 x 0~~30V Analog Input (res:0.01v)
--)))
--* (((
--Power Input 7~~ 24V DC.
--)))
++* 2 x Digital dual direction Input (Detect High/Low signal, Max: 50v, or 220v with optional external resistor)
++* 2 x Digital Output (NPN output. Max pull up voltage 36V,450mA)
++* 2 x Relay Output (5A@250VAC / 30VDC)
++* 2 x 0~~20mA Analog Input (res:0.01mA)
++* 2 x 0~~30V Analog Input (res:0.01v)
++* Power Input 7~~ 24V DC.
--(((
  **LoRa Spec:**
--)))
--* (((
--(((
--Frequency Range:
--)))
++* Frequency Range:
++** Band 1 (HF): 862 ~~ 1020 Mhz
++** Band 2 (LF): 410 ~~ 528 Mhz
++* 168 dB maximum link budget.
++* +20 dBm - 100 mW constant RF output vs.
++* +14 dBm high efficiency PA.
++* Programmable bit rate up to 300 kbps.
++* High sensitivity: down to -148 dBm.
++* Bullet-proof front end: IIP3 = -12.5 dBm.
++* Excellent blocking immunity.
++* Low RX current of 10.3 mA, 200 nA register retention.
++* Fully integrated synthesizer with a resolution of 61 Hz.
++* FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
++* Built-in bit synchronizer for clock recovery.
++* Preamble detection.
++* 127 dB Dynamic Range RSSI.
++* Automatic RF Sense and CAD with ultra-fast AFC.
++* Packet engine up to 256 bytes with CRC.
--* (((
--Band 1 (HF): 862 ~~ 1020 Mhz
--)))
--* (((
--Band 2 (LF): 410 ~~ 528 Mhz
--)))
--)))
--* (((
--168 dB maximum link budget.
--)))
--* (((
--+20 dBm - 100 mW constant RF output vs.
--)))
--* (((
--+14 dBm high efficiency PA.
--)))
--* (((
--Programmable bit rate up to 300 kbps.
--)))
--* (((
--High sensitivity: down to -148 dBm.
--)))
--* (((
--Bullet-proof front end: IIP3 = -12.5 dBm.
--)))
--* (((
--Excellent blocking immunity.
--)))
--* (((
--Low RX current of 10.3 mA, 200 nA register retention.
--)))
--* (((
--Fully integrated synthesizer with a resolution of 61 Hz.
--)))
--* (((
--FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
--)))
--* (((
--Built-in bit synchronizer for clock recovery.
--)))
--* (((
--Preamble detection.
--)))
--* (((
--127 dB Dynamic Range RSSI.
--)))
--* (((
--Automatic RF Sense and CAD with ultra-fast AFC.
--)))
--* (((
--Packet engine up to 256 bytes with CRC.
--)))
--
  == 1.3 Features ==
  * LoRaWAN Class A & Class C protocol
@@ -199,21 +199,13 @@
  == 3.1 How it works? ==
--(((
  The LT is configured as LoRaWAN OTAA Class C mode by default. It has OTAA keys to join network. To connect a local LoRaWAN network, user just need to input the OTAA keys in the network server and power on the LT. It will auto join the network via OTAA. For LT-22222-L, the LED will show the Join status: After power on **TX LED** will fast blink 5 times, LT-22222-L will enter working mode and start to JOIN LoRaWAN network. **TX LED** will be on for 5 seconds after joined in network. When there is message from server, the **RX LED** will be on for 1 second.
--)))
--(((
--In case user can’t set the OTAA keys in the network server and has to use the existing keys from server. User can [[use AT Command>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H4.UseATCommand]] to set the keys in the devices.
--)))
++In case user can’t set the OTAA keys in the network server and has to use the existing keys from server. User can [[use AT Command>>path:#AT_Command]] to set the keys in the devices.
--(((
 .2 Example to join LoRaWAN network
--)))
--(((
  This chapter shows an example for how to join the TTN LoRaWAN Network. Below is the network structure, we use our LG308 as LoRaWAN gateway here.
--)))
  [[image:image-20220523172350-1.png||height="266" width="864"]]
@@ -313,9 +313,7 @@
  **For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
--(((
  Total : 11 bytes payload
--)))
  [[image:image-20220523180452-3.png]]
@@ -329,77 +329,53 @@
  * FIRST: Indicate this is the first packet after join network.
  * 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.
--)))
--(((
  **To use counting mode, please run:**
--)))
  (% class="box infomessage" %)
  (((
--(((
  **AT+MOD=2**
  )))
--)))
  (% class="box infomessage" %)
  (((
--(((
  **ATZ**
  )))
--)))
--(((
  (% style="color:#4f81bd" %)**AT Commands for counting:**
--)))
--(((
  **For LT22222-L:**
--)))
  (% class="box infomessage" %)
  (((
--(((
  **AT+TRIG1=0,100 (set DI1 port to trigger on low level, valid signal is 100ms) **
  )))
--)))
  (% class="box infomessage" %)
  (((
--(((
  **AT+TRIG1=1,100(set DI1 port to trigger on high level, valid signal is 100ms ) **
  )))
--)))
  (% class="box infomessage" %)
  (((
--(((
  **AT+TRIG2=0,100 (set DI2 port to trigger on low level, valid signal is 100ms) **
  )))
--)))
  (% class="box infomessage" %)
  (((
--(((
  **AT+TRIG2=1,100 (set DI2 port to trigger on high level, valid signal is 100ms ) **
  )))
--)))
  (% class="box infomessage" %)
  (((
--(((
  **AT+SETCNT=1,60   (Set COUNT1 value to 60)**
  )))
--)))
  (% class="box infomessage" %)
  (((
--(((
  **AT+SETCNT=2,60   (Set COUNT2 value to 60)**
  )))
--)))
  === 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===
@@ -417,31 +417,21 @@
  * FIRST: Indicate this is the first packet after join network.
  * 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.
--)))
--(((
  **To use counting mode, please run:**
--)))
  (% class="box infomessage" %)
  (((
--(((
  **AT+MOD=3**
  )))
--)))
  (% class="box infomessage" %)
  (((
--(((
  **ATZ**
  )))
--)))
--(((
--Other AT Commands for counting are similar to [[MOD2 Counting Command>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.2AT2BMOD3D22C28DoubleDICounting29]].
--)))
++Other AT Commands for counting are similar to [[MOD2 Counting Command>>path:#COUNT_COMMAND]].
  === 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
@@ -461,67 +461,44 @@
  * FIRST: Indicate this is the first packet after join network.
  * 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.
--)))
--(((
  **To use this mode, please run:**
--)))
  (% class="box infomessage" %)
  (((
--(((
  **AT+MOD=4**
  )))
--)))
  (% class="box infomessage" %)
  (((
--(((
  **ATZ**
  )))
--)))
--(((
--
--)))
--(((
--Other AT Commands for counting are similar to [[MOD2 Counting Command>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.2AT2BMOD3D22C28DoubleDICounting29]].
--)))
++Other AT Commands for counting are similar to [[MOD2 Counting Command>>path:#COUNT_COMMAND]].
--(((
  **Plus below command for AVI1 Counting:**
--)))
  (% class="box infomessage" %)
  (((
--(((
  **AT+SETCNT=3,60   (set AVI Count to 60)**
  )))
--)))
  (% class="box infomessage" %)
  (((
--(((
  **AT+VOLMAX=20000   (If AVI1 voltage higher than VOLMAX (20000mV =20v), counter increase 1)**
  )))
--)))
  (% class="box infomessage" %)
  (((
--(((
  **AT+VOLMAX=20000,0   (If AVI1 voltage lower than VOLMAX (20000mV =20v), counter increase 1)**
  )))
--)))
  (% class="box infomessage" %)
  (((
--(((
  **AT+VOLMAX=20000,1   (If AVI1 voltage higer than VOLMAX (20000mV =20v), counter increase 1)**
  )))
--)))
  === 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI ===
@@ -535,35 +535,23 @@
  * RO is for relay. ROx=1 : close，ROx=0 always open.
  * FIRST: Indicate this is the first packet after join network.
--* (((
--DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
--)))
++* 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.
--)))
--(((
  **To use this mode, please run:**
--)))
  (% class="box infomessage" %)
  (((
--(((
  **AT+MOD=5**
  )))
--)))
  (% class="box infomessage" %)
  (((
--(((
  **ATZ**
  )))
--)))
--(((
--Other AT Commands for counting are similar to [[MOD2 Counting Command>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.2AT2BMOD3D22C28DoubleDICounting29]].
--)))
++Other AT Commands for counting are similar to [[MOD2 Counting Command>>path:#COUNT_COMMAND]].
  === 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) ===
@@ -612,7 +612,7 @@
  **Downlink Command to set Trigger Condition**
--Type Code: 0xAA. Downlink command same as AT Command **AT+AVLIM, AT+ACLIM**
++Type Code: 0xAA. Downlink command same as AT Command [[AT+AVLIM, AT+ACLIM>>path:#AT_Trigger]]
  Format: AA xx yy1 yy1 yy2 yy2 yy3 yy3 yy4 yy4
@@ -632,7 +632,7 @@
  Same as AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
--**Example2**: AA 02 01 00
++Example2: AA 02 01 00
  Same as AT+ DTRI =1,0  (Enable DI1 trigger / disable DI2 trigger)
@@ -971,10 +971,8 @@
  (% class="box infomessage" %)
  (((
--(((
  **0xA9 aa bb cc     ~/~/ Set DO1/DO2/DO3 output with time control**
  )))
--)))
  This is to control the digital output time of DO pin. Include four bytes:
@@ -1191,9 +1191,10 @@
  [[image:image-20220524094641-11.png||height="390" width="723"]]
++
  [[image:image-20220524094641-12.png||height="402" width="718"]]
--**Step 3**: Create an account or log in Mydevices.
++**Step **3: Create an account or log in Mydevices.
  **Step 4**: Search LT-22222-L(for both LT-22222-L / LT-33222-L) and add DevEUI.(% style="display:none" %)
@@ -1203,6 +1203,7 @@
  After added, the sensor data arrive TTN, it will also arrive and show in Mydevices.
++
  [[image:image-20220524094909-1.png||height="335" width="729"]]
  [[image:image-20220524094909-2.png||height="337" width="729"]]
@@ -1213,6 +1213,10 @@
  [[image:image-20220524094909-5.png||height="341" width="734"]]
++
++
++
++
  == 3.6 Interface Detail ==
  === 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
@@ -1228,10 +1228,8 @@
  )))
  (((
--(((
  Internal circuit as below, the NEC2501 is a photocoupler, the Active current (from NEC2501 pin 1 to pin 2 is 1ma and the max current is 50mA. When there is active current pass NEC2501 pin1 to pin2. The DI will be active high
  )))
--)))
  [[image:1653357170703-587.png]]
@@ -1249,7 +1249,7 @@
  So when sensor active, the current between NEC2501 pin1 and pin2 is：
--[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]]**  [[image:image-20220524095628-8.png]]  = DI1+ / 1K.**
++  //IF//  = DI1+ / 1K.
  If DI1+ = 12v, the //IF//  = 12mA , So the LT-22222-L will be able to detect this active signal.
@@ -1263,9 +1263,9 @@
  So when sensor active, the current between NEC2501 pin1 and pin2 is:
--[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]]**    [[image:image-20220524095628-8.png]]= DI1+ / 1K.**
++[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]]**    [[image:image-20220524095628-8.png]]= DI1+ / 1K.**
--If **DI1+ = 24v**, the [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]]**[[image:image-20220524095628-8.png]]** = 24mA , So the LT-22222-L will be able to detect this high active signal.
++If **DI1+ = 24v**, the [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]]**[[image:image-20220524095628-8.png]]** = 24mA , So the LT-22222-L will be able to detect this high active signal.
  **Example3**: Connect to a 220v high active sensor.
@@ -1277,7 +1277,7 @@
  So when sensor active, the current between NEC2501 pin1 and pin2 is:
--   [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]]**[[image:image-20220524095628-8.png]] = DI1+ / 51K.**
++   [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]]**[[image:image-20220524095628-8.png]] = DI1+ / 51K.**
  If sensor output is 220v, the (% id="cke_bm_243359S" style="display:none" %)[[image:image-20220524095628-8.png]](%%) = DI1+ / 51K.  = 4.3mA , So the LT-22222-L will be able to detect this high active signal safely.
@@ -1336,9 +1336,7 @@
  [[image:1653358238933-385.png]]
--(((
  In PC, User needs to set (% style="color:#4f81bd" %)**serial tool**(%%)(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600**(%%) to access to access serial console for LT. The AT commands are disable by default and need to enter password (default:(% style="color:green" %)**123456**)(%%) to active it. As shown below:
--)))
  [[image:1653358355238-883.png]]
@@ -1660,13 +1660,11 @@
  Below shows the hardware connection for how to upload an image to the LT:
  * [[image:1653359603330-121.png]]
--(((
  **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]].
  **Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
  **Step3: **Open flashloader; choose the correct COM port to update.
  **For LT-22222-L**:
  Hold down the PRO button and then momentarily press the RST reset button and the **DO1 led** will change from OFF to ON. When **DO1 LED** is on, it means the device is in download mode.
--)))
    [[image:image-20220524103407-12.png]]
@@ -1685,241 +1685,285 @@
  )))
  (((
--User can follow the introduction for [[how to upgrade image>>path:http://8.211.40.43:8080/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H5.1Howtoupgradetheimage3F]]. When download the images, choose the required image file for download.
++User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download.
  )))
  (((
--== 5.3 How to set up LT to work with Single Channel Gateway such as LG01/LG02? ==
++
  )))
++1.
++11. (((
++How to set up LT to work with Single Channel Gateway such as LG01/LG02?
++)))
++
  (((
--(((
  In this case, users need to set LT-33222-L to work in ABP mode & transmit in only one frequency.
  )))
--)))
  (((
--(((
  Assume we have a LG02 working in the frequency 868400000 now , below is the step.
  )))
++
++(((
++
  )))
  (((
--(% style="color:#4f81bd" %)**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.
++**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"]]
++[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image039.png]]
  )))
  (((
--(% style="color:red" %)Note: user just need to make sure above three keys match, User can change either in TTN or Device to make then match. In TTN, NETSKEY and APPSKEY can be configured by user in setting page, but Device Addr is generated by TTN.
++Note: user just need to make sure above three keys match, User can change either in TTN or Device to make then match. In TTN, NETSKEY and APPSKEY can be configured by user in setting page, but Device Addr is generated by TTN.
  )))
  (((
--(% style="color:#4f81bd" %)**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
++**Step2: **Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands:
  )))
  (((
--As shown in below:
++123456   Enter Password to have AT access.
  )))
--[[image:1653360498588-932.png||height="485" width="726"]]
++(((
++AT+FDR   Reset Parameters to Factory Default, Keys Reserve
++)))
--== 5.4 Can I see counting event in Serial? ==
++(((
++123456   Enter Password to have AT access.
++)))
  (((
--User can run AT+DEBUG command to see the counting event in serial. If firmware too old and doesn’t support AT+DEBUG. User can update to latest firmware first.
++AT+NJM=0 Set to ABP mode
  )))
  (((
--= 6. Trouble Shooting  =
++AT+ADR=0 Set the Adaptive Data Rate Off
  )))
  (((
++AT+DR=5  Set Data Rate (Set AT+DR=3 for 915 band)
++)))
++
  (((
--== 6.1 Downlink doesn’t work, how to solve it? ==
++AT+TDC=60000  Set transmit interval to 60 seconds
  )))
++
++(((
++AT+CHS=868400000 Set transmit frequency to 868.4Mhz
  )))
  (((
--Please see this link for how to debug:
++AT+DADDR=26 01 1A F1 Set Device Address to 26 01 1A F1
++)))
--[[http:~~/~~/8.211.40.43:8080/xwiki/bin/view/Main/LoRaWAN%20Communication%20Debug/>>http://8.211.40.43:8080/xwiki/bin/view/Main/LoRaWAN%20Communication%20Debug/]]
++(((
++ATZ                Reset MCU
  )))
  (((
--[[http:~~/~~/wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#How_it_work>>url:http://wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#How_it_work]]
++As shown in below:
  )))
  (((
--== 6.2 Have trouble to upload image. ==
++[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image040.png]]
  )))
  (((
--See this link for trouble shooting:
++
  )))
  (((
--[[http:~~/~~/wiki.dragino.com/index.php?title=Firmware_Upgrade_Trouble_Shooting#UART_upgrade_trouble_shooting>>url:http://wiki.dragino.com/index.php?title=Firmware_Upgrade_Trouble_Shooting#UART_upgrade_trouble_shooting]]
++
  )))
++1. (((
  (((
--== 6.3 Why I can’t join TTN in US915 /AU915 bands? ==
++
  )))
++1. (((
++Can I see counting event in Serial?
++)))
++)))
++
  (((
--It might be about the channels mapping. Please see this link for detail:
++User can run AT+DEBUG command to see the counting event in serial. If firmware too old and doesn’t support AT+DEBUG. User can update to latest firmware first.
  )))
  (((
--[[http:~~/~~/wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#Notice_of_US915.2FCN470.2FAU915_Frequency_band>>url:http://wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#Notice_of_US915.2FCN470.2FAU915_Frequency_band]]
++
  )))
  (((
--= 7. Order Info =
++
  )))
  (((
++
++)))
++
++1. (((
  (((
--(% style="color:#4f81bd" %)**LT-22222-L-XXX:**
++Trouble Shooting
  )))
++
++1. (((
++Downlink doesn’t work, how to solve it?
  )))
++)))
  (((
++Please see this link for how to debug:
++)))
++
  (((
--(% style="color:#4f81bd" %)**XXX:**
++[[http:~~/~~/wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#How_it_work>>url:http://wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#How_it_work]]
  )))
--)))
  (((
--* (((
--(% style="color:#4f81bd" %)**EU433**(%%): LT with frequency bands EU433
++
  )))
++
++1.
++11. (((
++Have trouble to upload image.
  )))
  (((
--* (((
--(% style="color:#4f81bd" %)**EU868**(%%): LT with frequency bands EU868
++See this link for trouble shooting:
  )))
++
++(((
++[[http:~~/~~/wiki.dragino.com/index.php?title=Firmware_Upgrade_Trouble_Shooting#UART_upgrade_trouble_shooting>>url:http://wiki.dragino.com/index.php?title=Firmware_Upgrade_Trouble_Shooting#UART_upgrade_trouble_shooting]]
  )))
  (((
--* (((
--(% style="color:#4f81bd" %)**KR920**(%%): LT with frequency bands KR920
++
  )))
++
++1.
++11. (((
++Why I can’t join TTN in US915 /AU915 bands?
  )))
  (((
--* (((
--(% style="color:#4f81bd" %)**CN470**(%%): LT with frequency bands CN470
++It might be about the channels mapping. Please see this link for detail:
  )))
++
++(((
++[[http:~~/~~/wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#Notice_of_US915.2FCN470.2FAU915_Frequency_band>>url:http://wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#Notice_of_US915.2FCN470.2FAU915_Frequency_band]]
  )))
  (((
--* (((
--(% style="color:#4f81bd" %)**AS923**(%%): LT with frequency bands AS923
++
  )))
++
++(((
++
  )))
  (((
--* (((
--(% style="color:#4f81bd" %)**AU915**(%%): LT with frequency bands AU915
++
  )))
++
++1. (((
++Order Info
  )))
  (((
--* (((
--(% style="color:#4f81bd" %)**US915**(%%): LT with frequency bands US915
++**For LT-33222-L-XXX or LT-22222-L-XXX:**
  )))
--)))
  (((
++**XXX:**
++)))
++
  * (((
--(% style="color:#4f81bd" %)**IN865**(%%): LT with frequency bands IN865
++**EU433**: LT with frequency bands EU433
  )))
++* (((
++**EU868**: LT with frequency bands EU868
  )))
--
--(((
  * (((
--(% style="color:#4f81bd" %)**CN779**(%%): LT with frequency bands CN779
++**KR920**: LT with frequency bands KR920
  )))
++* (((
++**CN470**: LT with frequency bands CN470
++)))
++* (((
++**AS923**: LT with frequency bands AS923
++)))
++* (((
++**AU915**: LT with frequency bands AU915
++)))
++* (((
++**US915**: LT with frequency bands US915
++)))
++* (((
++**IN865**: LT with frequency bands IN865
++)))
++* (((
++**CN779**: LT with frequency bands CN779
++)))
--= 8. Packing Info =
++1. (((
++Packing Info
  )))
  (((
--(((
  **Package Includes**:
  )))
--)))
--(((
--(((
--* LT-22222-L I/O Controller x 1
--* Stick Antenna for LoRa RF part x 1
--* Bracket for controller x1
--* Program cable x 1
++* (((
++LT I/O Controller x 1
  )))
++* (((
++Stick Antenna for LoRa RF part x 1
  )))
++* (((
++Bracket for controller x1
++)))
++* (((
++Program cable x 1
++)))
  (((
--(((
  **Dimension and weight**:
  )))
--)))
--(((
--(((
--* Device Size: 13.5 x 7 x 3 cm
--* Device Weight: 105g
--* Package Size / pcs : 14.5 x 8 x 5 cm
--* Weight / pcs : 170g
++* (((
++Device Size: 13.5 x 7 x 3 cm
  )))
++* (((
++Device Weight: 105g
  )))
++* (((
++Package Size / pcs : 14.5 x 8 x 5 cm
++)))
++* (((
++Weight / pcs : 170g
++)))
--(((
--= 9. Support =
++1. (((
++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.
  )))
--)))
  * (((
--(((
  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.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]]
++[[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]]
  )))
--
--(((
--= 10. Reference =
--
--* Product Page:
--
--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]]
--
--* [[Image Download>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]]
--* [[AT Command Manual>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/]]
--* [[Hardware Source>>url:https://github.com/dragino/Lora/tree/master/LT/LT-33222-L/v1.0]]
--)))
--)))

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