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

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

From 102.5 to 103.1 From 118.15 to 119.1

From version 103.1

edited by Bei Jinggeng
on 2022/11/10 10:26

Change comment: There is no comment for this version

To version 118.15

edited by Xiaoling
on 2023/05/17 11:43

Change comment: There is no comment for this version

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

Content

@@ -15,7 +15,6 @@
  = 1.Introduction =
--
  == 1.1 What is LT Series I/O Controller ==
  (((
@@ -27,7 +27,7 @@
  )))
  (((
--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.
++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, building automation, and so on.
  )))
  (((
@@ -54,7 +54,6 @@
  )))
--
  == 1.2  Specifications ==
  (((
@@ -64,7 +64,7 @@
  )))
  * (((
--STM32L072CZT6 MCU
++STM32L072xxxx MCU
  )))
  * (((
  SX1276/78 Wireless Chip
@@ -171,7 +171,6 @@
  Packet engine up to 256 bytes with CRC.
--
  )))
@@ -179,31 +179,47 @@
  * LoRaWAN Class A & Class C protocol
++
  * Optional Customized LoRa Protocol
++
  * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/RU864/IN865/MA869
++
  * AT Commands to change parameters
++
  * Remote configure parameters via LoRa Downlink
++
  * Firmware upgradable via program port
++
  * Counting
++
  == 1.4  Applications ==
  * Smart Buildings & Home Automation
++
  * Logistics and Supply Chain Management
++
  * Smart Metering
++
  * Smart Agriculture
++
  * Smart Cities
++
  * Smart Factory
++
  == 1.5 Hardware Variants ==
--(% border="1" style="background-color:#f7faff; width:500px" %)
--|(% style="width:103px" %)**Model**|(% style="width:131px" %)**Photo**|(% style="width:334px" %)**Description**
--|(% style="width:103px" %)**LT22222-L**|(% style="width:131px" %)[[image:1653296302983-697.png]]|(% style="width:334px" %)(((
++(% border="1" style="background-color:#f2f2f2; width:500px" %)
++|(% style="background-color:#d9e2f3; color:#0070c0; width:103px" %)**Model**|(% style="background-color:#d9e2f3; color:#0070c0; width:131px" %)**Photo**|(% style="background-color:#d9e2f3; color:#0070c0; width:334px" %)**Description**
++|(% style="width:103px" %)**LT22222-L**|(% style="width:131px" %)(((
++(% style="text-align:center" %)
++[[image:image-20230424115112-1.png||height="106" width="58"]]
++)))|(% style="width:334px" %)(((
  * 2 x Digital Input (Bi-direction)
  * 2 x Digital Output
  * 2 x Relay Output (5A@250VAC / 30VDC)
@@ -213,6 +213,7 @@
  )))
++
  = 2. Power ON Device =
@@ -229,10 +229,8 @@
  [[image:1653297104069-180.png]]
--
  = 3. Operation Mode =
--
  == 3.1 How it works? ==
@@ -245,7 +245,6 @@
  )))
--
  == 3.2 Example to join LoRaWAN network ==
@@ -272,7 +272,7 @@
  Each LT is shipped with a sticker with the default device EUI as below:
  )))
--[[image:1653297924498-393.png]]
++[[image:image-20230425173427-2.png||height="246" width="530"]]
  Input these keys in the LoRaWAN Server portal. Below is TTN screen shot:
@@ -297,7 +297,6 @@
  [[image:1653298044601-602.png||height="405" width="709"]]
--
  == 3.3 Uplink Payload ==
@@ -316,18 +316,37 @@
  (((
--The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default.
++The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default. (% style="display:none" %)
++
++(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
++|**Size(bytes)(% style="display:none" %) (%%)**|**2**|**2**|**2**|**2**|**1**|**1**|**1**
++|Value|(((
++AVI1
++voltage
++)))|(((
++AVI2
++voltage
++)))|(((
++ACI1
++Current
++)))|(((
++ACI2
++Current
++)))|DIDORO*|(((
++Reserve
++)))|MOD
  )))
--[[image:image-20220523174024-3.png]]
--
  (((
  (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
++
++(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
++|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
++|RO1|RO2|DI3|DI2|DI1|DO3|DO2|DO1
  )))
--[[image:image-20220523174254-4.png]]
  * RO is for relay. ROx=1 : close，ROx=0 always open.
  * DI is for digital input. DIx=1: high or float, DIx=0: low.
@@ -379,18 +379,28 @@
  (((
  Total : 11 bytes payload
--)))
--[[image:image-20220523180452-3.png]]
++(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
++|**Size(bytes)**|**4**|**4**|**1**|**1**|**1**
++|Value|COUNT1|COUNT2 |DIDORO*|(((
++Reserve
++
++)))|MOD
++)))
  (((
++
++
  (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DO3, DO2 and DO1. Totally 1bytes as below
--)))
--[[image:image-20220523180506-4.png]]
++(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
++|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
++|RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
--* RO is for relay. ROx=1 : close，ROx=0 always open.
++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.
@@ -443,21 +443,29 @@
  )))
--
  === 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===
  **LT22222-L**: This mode the DI1 is used as a counting pin.
--[[image:image-20220523181246-5.png]]
++(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
++|**Size(bytes)**|**4**|**2**|**2**|**1**|**1**|**1**
++|Value|COUNT1|(((
++ACI1 Current
++)))|(((
++ACI2 Current
++)))|DIDORO*|Reserve|MOD
  (((
  (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
++
++(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
++|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
++|RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
  )))
--[[image:image-20220523181301-6.png]]
  * RO is for relay. ROx=1 : close，ROx=0 always open.
  * FIRST: Indicate this is the first packet after join network.
@@ -490,7 +490,6 @@
  )))
--
  === 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
@@ -500,16 +500,25 @@
  (((
  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]]
++(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
++|**Size(bytes)**|**4**|**4**|**1**|**1**|**1**
++|Value|COUNT1|AVI1 Counting|DIDORO*|(((
++Reserve
++
++)))|MOD
++)))
++
  (((
  (% style="color:#4f81bd" %)**DIDORO **(%%)is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
++
++(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
++|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
++|RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
  )))
--[[image:image-20220523181727-7.png]]
  * RO is for relay. ROx=1 : close，ROx=0 always open.
  * FIRST: Indicate this is the first packet after join network.
@@ -559,18 +559,34 @@
  )))
--
  === 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI ===
  **LT22222-L**: This mode the DI1 is used as a counting pin.
--[[image:image-20220523182334-9.png]]
++(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
++|**Size(bytes)**|**2**|**2**|**2**|**2**|**1**|**1**|**1**
++|Value|(((
++AVI1
++voltage
++)))|(((
++AVI2
++voltage
++)))|(((
++ACI1
++Current
++)))|COUNT1|DIDORO*|(((
++Reserve
++)))|MOD
  (((
  (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
++
++(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
++|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
++|RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
  )))
  * RO is for relay. ROx=1 : close，ROx=0 always open.
@@ -607,7 +607,6 @@
  )))
--
  === 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) ===
@@ -662,7 +662,6 @@
  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**
@@ -697,12 +697,52 @@
  MOD6 Payload : total 11 bytes payload
--[[image:image-20220524085923-1.png]]
++(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
++|**Size(bytes)**|**1**|**1**|**1**|**6**|**1**|**1**
++|Value|(((
++TRI_A
++FLAG
++)))|(((
++TRI_A
++Status
++)))|(((
++TRI_DI
++FLAG+STA
++)))|Reserve|Enable/Disable MOD6|(((
++MOD
++(6)
++)))
  (% style="color:#4f81bd" %)**TRI FLAG1**(%%) is a combination to show if trigger is set for this part. Totally 1byte as below
--[[image:image-20220524090106-2.png]]
++(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
++|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
++|(((
++AV1_
++LOW
++)))|(((
++AV1_
++HIGH
++)))|(((
++AV2_
++LOW
++)))|(((
++AV2_
++HIGH
++)))|(((
++AC1_
++LOW
++)))|(((
++AC1_
++HIGH
++)))|(((
++AC2_
++LOW
++)))|(((
++AC2_
++HIGH
++)))
  * Each bits shows if the corresponding trigger has been configured.
@@ -711,10 +711,35 @@
  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]]
++(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
++|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
++|(((
++AV1_
++LOW
++)))|(((
++AV1_
++HIGH
++)))|(((
++AV2_
++LOW
++)))|(((
++AV2_
++HIGH
++)))|(((
++AC1_
++LOW
++)))|(((
++AC1_
++HIGH
++)))|(((
++AC2_
++LOW
++)))|(((
++AC2_
++HIGH
++)))
  * Each bits shows which status has been trigger on this uplink.
@@ -723,10 +723,11 @@
  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]]
++(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
++|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
++|N/A|N/A|N/A|N/A|DI2_STATUS|DI2_FLAG|DI1_STATUS|DI1_FLAG
  * Each bits shows which status has been trigger on this uplink.
@@ -737,7 +737,6 @@
  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:
@@ -747,7 +747,6 @@
  When device got this command, it will send the MOD6 payload.
--
  === 3.3.7 Payload Decoder ===
  (((
@@ -757,7 +757,6 @@
  )))
--
  == 3.4 Configure LT via AT or Downlink ==
@@ -776,6 +776,7 @@
  * (% style="color:blue" %)**Sensor Related Commands**(%%): These commands are special designed for LT-22222-L.  User can see these commands below:
++
  === 3.4.1 Common Commands ===
@@ -784,10 +784,8 @@
  )))
--
  === 3.4.2 Sensor related commands ===
--
  ==== 3.4.2.1 Set Transmit Interval ====
@@ -863,7 +863,6 @@
--
  ==== 3.4.2.5 Poll trigger settings ====
@@ -946,7 +946,7 @@
  * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 02 ):**
--(% style="color:blue" %)**0x09 02 aa bb cc   **  (%%)~/~/ same as AT+TRIG1=aa,0x(bb cc)
++(% style="color:blue" %)**0x09 02 aa bb cc   **  (%%)~/~/ same as AT+TRIG2=aa,0x(bb cc)
@@ -1021,9 +1021,14 @@
  (((
 : Low,  00: High ,  11: No action
++
++(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
++|(% style="background-color:#d9e2f3; color:#0070c0" %)**Downlink Code**|(% style="background-color:#d9e2f3; color:#0070c0" %)**DO1**|(% style="background-color:#d9e2f3; color:#0070c0" %)**DO2**|(% style="background-color:#d9e2f3; color:#0070c0" %)**DO3**
++|02  01  00  11|Low|High|No Action
++|02  00  11  01|High|No Action|Low
++|02  11  01  00|No Action|Low|High
  )))
--[[image:image-20220524092754-5.png]]
  (((
  (% style="color:red" %)**Note: For LT-22222-L, there is no DO3, the last byte can use any value.**
@@ -1061,23 +1061,38 @@
  (% style="color:#4f81bd" %)**Third Byte**(%%): Control Method and Ports status:
--[[image:image-20220524093238-6.png]]
++(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
++|(% style="background-color:#d9e2f3; color:#0070c0" %)**Second Byte**|(% style="background-color:#d9e2f3; color:#0070c0" %)**Status**
++|0x01|DO1 set to low
++|0x00|DO1 set to high
++|0x11|DO1 NO Action
--
  (% style="color:#4f81bd" %)**Fourth Byte**(%%): Control Method and Ports status:
--[[image:image-20220524093328-7.png]]
++(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
++|(% style="background-color:#d9e2f3; color:#0070c0" %)**Second Byte**|(% style="background-color:#d9e2f3; color:#0070c0" %)**Status**
++|0x01|DO2 set to low
++|0x00|DO2 set to high
++|0x11|DO2 NO Action
--
  (% style="color:#4f81bd" %)**Fifth Byte**(%%): Control Method and Ports status:
--[[image:image-20220524093351-8.png]]
++(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
++|(% style="background-color:#d9e2f3; color:#0070c0" %)**Second Byte**|(% style="background-color:#d9e2f3; color:#0070c0" %)**Status**
++|0x01|DO3 set to low
++|0x00|DO3 set to high
++|0x11|DO3 NO Action
++(% style="color:#4f81bd" %)**Sixth and Seventh and Eighth and Ninth Byte**:(%%) Latching time. Unit: ms
--(% style="color:#4f81bd" %)**Sixth and Seventh and Eighth and Ninth Byte**:
--         Latching time. Unit: ms
++(% style="color:red" %)**Note: **
++   Since Firmware v1.6.0, the latch time support 4 bytes and 2 bytes
++
++   Before Firmwre v1.6.0 the latch time only suport 2 bytes.
++
++
  (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
@@ -1101,7 +1101,7 @@
--==== 3.4.2.14 Relay ~-~- Control Relay Output RO1/RO2 ====
++==== 3.4.2. 14 Relay ~-~- Control Relay Output RO1/RO2 ====
  * (% style="color:#037691" %)**AT Command:**
@@ -1120,10 +1120,21 @@
  (((
 : Close ,  00: Open , 11: No action
++
++(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:320px" %)
++|(% style="background-color:#d9e2f3; color:#0070c0" %)**Downlink Code**|(% style="background-color:#d9e2f3; color:#0070c0" %)**RO1**|(% style="background-color:#d9e2f3; color:#0070c0" %)**RO2**
++|03  00  11|Open|No Action
++|03  01  11|Close|No Action
++|03  11  00|No Action|Open
++|03  11  01|No Action|Close
++|03  00  00|Open|Open
++|03  01  01|Close|Close
++|03  01  00|Close|Open
++|03  00  01|Open|Close
  )))
  (((
--[[image:image-20220524093724-9.png]]
++
  )))
  (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
@@ -1130,7 +1130,6 @@
--
  ==== 3.4.2.15 Relay ~-~- Control Relay Output RO1/RO2 with time control ====
@@ -1162,12 +1162,20 @@
  (% style="color:#4f81bd" %)**Fourth/Fifth/Sixth/Seventh Bytes(cc)**(%%): Latching time. Unit: ms
++
++(% style="color:red" %)**Note:**
++
++   Since Firmware v1.6.0, the latch time support 4 bytes and 2 bytes
++
++   Before Firmwre v1.6.0 the latch time only suport 2 bytes.
++
++
  (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
  **Example payload:**
--**~1. 05 01 11 07 D**
++**~1. 05 01 11 07 D0**
  Relay1 and Relay 2 will be set to NC , last 2 seconds, then change back to original state.
@@ -1253,14 +1253,14 @@
--==== 3.4.2.20 Reset save DR DO state ====
++==== 3.4.2.20 Reset save RO DO state ====
  * (% style="color:#037691" %)**AT Command:**
--(% style="color:blue" %)**AT+RODORET=1    **(%%)~/~/ RODO will close when the device joining the network. (default)
++(% style="color:blue" %)**AT+RODORESET=1    **(%%)~/~/ RODO will close when the device joining the network. (default)
--(% style="color:blue" %)**AT+RODORET=0    **(%%)~/~/ After the device is reset, the previously saved RODO state (only MOD2 to MOD5) is read, and its state is not changed when it is reconnected to the network.
++(% style="color:blue" %)**AT+RODORESET=0    **(%%)~/~/ After the device is reset, the previously saved RODO state (only MOD2 to MOD5) is read, and its state is not changed when it is reconnected to the network.
  * (% style="color:#037691" %)**Downlink Payload (prefix 0xAD):**
@@ -1302,7 +1302,6 @@
--
  ==== 3.4.2.24 When the limit bytes are exceeded, upload in batches ====
@@ -1319,7 +1319,6 @@
--
  ==== 3.4.2.25 Copy downlink to uplink ====
@@ -1358,7 +1358,6 @@
  [[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"]]
--
  == 3.5 Integrate with Mydevice ==
@@ -1383,7 +1383,7 @@
  (% style="color:blue" %)**Step 3**(%%): Create an account or log in Mydevices.
--(% style="color:blue" %)**Step 4**(%%): Search LT-22222-L(for both LT-22222-L / LT-33222-L) and add DevEUI.(% style="display:none" %)
++(% style="color:blue" %)**Step 4**(%%): Search LT-22222-L(for both LT-22222-L) and add DevEUI.(% style="display:none" %)
  Search under The things network
@@ -1408,10 +1408,8 @@
  [[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 ) ===
@@ -1420,7 +1420,6 @@
  [[image:1653356991268-289.png]]
--
  === 3.6.2 Digital Input Port: DI1/DI2 ( For LT-22222-L) ===
@@ -1477,8 +1477,6 @@
  (((
--
--
  )))
  (((
@@ -1510,8 +1510,6 @@
  (((
--
--
  )))
  (((
@@ -1542,16 +1542,16 @@
  )))
--
  === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
--NPN output: GND or Float. Max voltage can apply to output pin is 36v.
++(% style="color:blue" %)**NPN output**(%%): GND or Float. Max voltage can apply to output pin is 36v.
++(% style="color:red" %)**Note: DO pins go to float when device is power off.**
++
  [[image:1653357531600-905.png]]
--
  === 3.6.4 Analog Input Interface ===
@@ -1569,9 +1569,9 @@
  (% style="color:blue" %)**Specifications of the wind speed sensor:**
--**Red:      12~~24v**
++(% style="color:red" %)**Red:      12~~24v**
--**Yellow:  4~~20mA**
++(% style="color:#ffc000" %)**Yellow:  4~~20mA**
  **Black:   GND**
@@ -1583,12 +1583,13 @@
  [[image:1653357648330-671.png||height="155" width="733"]]
--
  === 3.6.5 Relay Output ===
  (((
--The LT serial controller has two relay interfaces; each interface uses two pins of the screw terminal. User can connect other device’s Power Line to in serial of RO1_1 and RO_2. Such as below:
++The LT serial controller has two relay interfaces; each interface uses two pins of the screw terminal. User can connect other device's Power Line to in serial of RO1_1 and RO_2. Such as below:
++
++**Note**: RO pins go to Open(NO) when device is power off.
  )))
  [[image:image-20220524100215-9.png]]
@@ -1597,17 +1597,48 @@
  [[image:image-20220524100215-10.png||height="382" width="723"]]
--
  == 3.7 LEDs Indicators ==
--[[image:image-20220524100748-11.png]]
++(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
++|(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**LEDs**|(% style="background-color:#d9e2f3; color:#0070c0; width:470px" %)**Feature**
++|**PWR**|Always on if there is power
++|**SYS**|(((
++After device is powered on, the SYS will **fast blink in GREEN** for 5 times, means RS485-LN start to join LoRaWAN network. If join success, SYS will be **on GREEN for 5 seconds. **SYS will **blink Blue** on every upload and **blink Green** once receive a downlink message.
++)))
++|**TX**|(((
++(((
++Device boot: TX blinks 5 times.
++)))
++(((
++Successful join network: TX ON for 5 seconds.
++)))
++(((
++Transmit a LoRa packet: TX blinks once
++)))
++)))
++|**RX**|RX blinks once when receive a packet.
++|**DO1**|
++|**DO2**|
++|**DO3**|
++|**DI2**|(((
++For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
++)))
++|**DI2**|(((
++For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
++)))
++|**DI2**|(((
++For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
++)))
++|**RO1**|
++|**RO2**|
--= 4. Use AT Command =
++= 4. Use AT Command =
++
  == 4.1 Access AT Command ==
@@ -1818,10 +1818,8 @@
  )))
--
  == 4.2 Common AT Command Sequence ==
--
  === 4.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
  (((
@@ -1866,7 +1866,6 @@
  )))
--
  === 4.2.2 Single-channel ABP mode (Use with LG01/LG02) ===
  (((
@@ -1939,7 +1939,7 @@
  **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**
++**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.**
  )))
@@ -1952,7 +1952,6 @@
  )))
--
  === 4.2.3 Change to Class A ===
@@ -1964,13 +1964,19 @@
  )))
++= 5. Case Study =
--= 5. FAQ =
++== 5.1 Counting how many objects pass in Flow Line ==
--== 5.1 How to upgrade the image? ==
++Reference Link: [[How to set up to count objects pass in flow line>>How to set up to count objects pass in flow line]]?
++= 6. FAQ =
++
++== 6.1 How to upgrade the image? ==
++
++
  The LT LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to LT to:
  * Support new features
@@ -1998,8 +1998,10 @@
    [[image:image-20220524103407-12.png]]
++
  [[image:image-20220524103429-13.png]]
++
  [[image:image-20220524104033-15.png]]
@@ -2011,10 +2011,8 @@
  (((
  (((
--
++== 6.2 How to change the LoRa Frequency Bands/Region? ==
--== 5.2 How to change the LoRa Frequency Bands/Region? ==
--
  )))
  )))
@@ -2026,9 +2026,8 @@
  (((
++== 6.3 How to set up LT to work with Single Channel Gateway such as LG01/LG02? ==
--== 5.3 How to set up LT to work with Single Channel Gateway such as LG01/LG02? ==
--
  )))
@@ -2090,26 +2090,29 @@
  [[image:1653360498588-932.png||height="485" width="726"]]
++== 6.4 How to change the uplink interval？ ==
--== 5.4 Can I see counting event in Serial? ==
++Please see this link: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/How%20to%20set%20the%20transmit%20time%20interval/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20set%20the%20transmit%20time%20interval/]]
--(((
--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.
++== 6.5 Can I see counting event in Serial? ==
--== 5.5 Can i use point to point communication for LT-22222-L? ==
++(((
++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.
--Yes, please refer [[Point to Point Communication>>doc:Main. Point to Point Communication of LT-22222-L.WebHome]]  ，this is [[firmware>>https://www.dropbox.com/sh/g99v0fxcltn9r1y/AADKXQ2v5ZT-S3sxdmbvE7UAa/LT-22222-L/image?dl=0&subfolder_nav_tracking=1]].
++== 6.6 Can i use point to point communication for LT-22222-L? ==
++Yes, please refer [[Point to Point Communication>>doc:Main. Point to Point Communication of LT-22222-L.WebHome]]  ，this is [[firmware>>https://github.com/dragino/LT-22222-L/releases]].
++
  )))
  (((
--== 5.6 Why does the relay output become the default and open relay after the lt22222 is powered off? ==
++== 6.7 Why does the relay output become the default and open relay after the lt22222 is powered off? ==
  If the device is not shut down, but directly powered off.
@@ -2121,10 +2121,9 @@
  After restart, the status before power failure will be read from flash.
++== 6.8 Can i set up LT-22222-L as a NC(Normal Close) Relay? ==
--== 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:
@@ -2131,19 +2131,18 @@
  [[image:image-20221006170630-1.png||height="610" width="945"]]
--== 5.8 Can LT22222 save RO state? ==
++== 6.9 Can LT22222-L save RO state? ==
++
  Firmware version needs to be no less than 1.6.0.
--= 6. Trouble Shooting =
--
--
++= 7. Trouble Shooting =
  )))
  (((
  (((
--== 6.1 Downlink doesn't work, how to solve it? ==
++== 7.1 Downlink doesn't work, how to solve it? ==
  )))
@@ -2156,9 +2156,8 @@
  (((
++== 7.2 Have trouble to upload image. ==
--== 6.2 Have trouble to upload image. ==
--
  )))
@@ -2169,9 +2169,8 @@
  (((
++== 7.3 Why I can't join TTN in US915 /AU915 bands? ==
--== 6.3 Why I can't join TTN in US915 /AU915 bands? ==
--
  )))
@@ -2180,10 +2180,9 @@
  )))
++= 8. Order Info =
--= 7. Order Info =
--
  (% style="color:#4f81bd" %)**LT-22222-L-XXX:**
  (% style="color:#4f81bd" %)**XXX:**
@@ -2199,9 +2199,10 @@
  * (% style="color:red" %)**CN779**(%%):  LT with frequency bands CN779
--= 8. Packing Info =
++= 9. Packing Info =
++
  **Package Includes**:
  * LT-22222-L I/O Controller x 1
@@ -2217,21 +2217,21 @@
  * Weight / pcs : 170g
--= 9. Support =
++= 10. 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]]
++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]]
--
  )))
--= 10. Reference =
++= 11. Reference =
  * LT-22222-L: [[http:~~/~~/www.dragino.com/products/lora-lorawan-end-node/item/156-lt-22222-l.html>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/156-lt-22222-l.html]]

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