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 < 159.1 >

edited by Bei Jinggeng
on 2024/11/01 14:02

To version < 164.1 >

edited by Dilisi S
on 2024/11/06 05:10

Change comment: minor edits set 2

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

Content

@@ -17,7 +17,7 @@
--= 1.Introduction =
++= 1. Introduction =
  == 1.1 What is the LT-22222-L I/O Controller? ==
@@ -42,7 +42,7 @@
  * If there is no public LoRaWAN coverage in your area, you can set up a LoRaWAN gateway, or multiple gateways, and connect them to a LoRaWAN network server to create adequate coverage. Then, register the LT-22222-L I/O controller with this network.
  * Setup your own private LoRaWAN network.
--> You can use the Dragino LG308 gateway to expand or create LoRaWAN coverage in your area.
++> You can use a LoRaWAN gateway, such as the Dragino LG308, to expand or create LoRaWAN coverage in your area.
  )))
  (((
@@ -60,12 +60,12 @@
  * Power Consumption:
  ** Idle: 4mA@12v
  ** 20dB Transmit: 34mA@12v
--* Operating Temperature: -40 ~~ 85 Degree, No Dew
++* Operating Temperature: -40 ~~ 85 Degrees, No Dew
  (% style="color:#037691" %)**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 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)
@@ -78,7 +78,7 @@
  ** Band 2 (LF): 410 ~~ 528 Mhz
  * 168 dB maximum link budget.
  * +20 dBm - 100 mW constant RF output vs.
--* +14 dBm high efficiency PA.
++* +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.
@@ -98,7 +98,7 @@
  * 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
++* Remotely configure parameters via LoRaWAN Downlink
  * Firmware upgradable via program port
  * Counting
@@ -139,7 +139,7 @@
  * 1 x bracket for wall mounting
  * 1 x programming cable
--Attach the LoRaWAN antenna to the connector labeled **ANT** (located on the top right side of the device, next to the upper terminal block). Secure the antenna by tightening it clockwise.
++Attach the LoRaWAN antenna to the antenna connector, ANT,** **located on the top right side of the device, next to the upper terminal block. Secure the antenna by tightening it clockwise.
  == 2.2 Terminals ==
@@ -169,9 +169,9 @@
  |(% style="width:296px" %)DO2|(% style="width:334px" %)Digital Output 2
  |(% style="width:296px" %)DO1|(% style="width:334px" %)Digital Output 1
--== 2.3 Powering ==
++== 2.3 Powering the LT-22222-L  ==
--The LT-22222-L I/O Controller can be powered by a 7–24V DC power source. Connect the power supply’s positive wire to the VIN screw terminal and the negative wire to the GND screw terminal. The power indicator (PWR) LED will turn on when the device is properly powered.
++The LT-22222-L I/O Controller can be powered by a 7–24V DC power source. Connect the power supply’s positive wire to the VIN and the negative wire to the GND screw terminals. The power indicator (PWR) LED will turn on when the device is properly powered.
  [[image:1653297104069-180.png]]
@@ -181,9 +181,9 @@
  == 3.1 How does it work? ==
--The LT-22222-L is configured to operate in LoRaWAN Class C mode by default. It supports OTAA (Over-the-Air Activation), which is the most secure method for activating a device with a LoRaWAN network server. The LT-22222-L comes with device registration information that allows you to register it with a LoRaWAN network, enabling the device to perform OTAA activation with the network server upon initial power-up and after any subsequent reboots.
++By default, the LT-22222-L is configured to operate in LoRaWAN Class C mode. It supports OTAA (Over-the-Air Activation), the most secure method for activating a device with a LoRaWAN network server. The LT-22222-L comes with device registration information that allows you to register it with a LoRaWAN network, enabling the device to perform OTAA activation with the network server upon initial power-up and after any subsequent reboots.
--For LT-22222-L, the LED will show the Join status: After power on (% style="color:green" %)**TX LED**(%%) will fast blink 5 times, LT-22222-L will enter working mode and start to JOIN LoRaWAN network. (% style="color:green" %)**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.
++For LT-22222-L, the LED will show the Join status: After powering on, the TX LED will fast-blink 5 times which means the LT-22222-L will enter the working mode and start to JOIN the LoRaWAN network. The TX LED will be on for 5 seconds after joining the network. When there is a message from the server, the RX LED will be on for 1 second.
  In case you can't set the root key and other identifiers in the network server and must use them from the server, you can use [[AT Commands>>||anchor="H4.UseATCommand"]] to configure them on the device.
@@ -205,7 +205,7 @@
  * Log in to your [[The Things Stack Sandbox>>https://eu1.cloud.thethings.network]] account.
  * Create an application if you do not have one yet.
--* Register LT-22222-L with that application. Two registration options available:
++* Register LT-22222-L with that application. Two registration options are available:
  ==== Using the LoRaWAN Device Repository: ====
@@ -213,12 +213,12 @@
  * On the **Register end device** page:
  ** Select the option **Select the end device in the LoRaWAN Device Repository**.
  ** Choose the **End device brand**, **Model**, **Hardware version**, **Firmware version**, and **Profile (Region)**.
--** Select the **Frequency plan** that matches with your device.
++** Select the **Frequency plan** that matches your device.
  [[image:lt-22222-l-dev-repo-reg-p1.png||height="625" width="1000"]]
  *
--** Enter the **AppEUI** in the **JoinEUI** field and click **Confirm** button.
++** Enter the **AppEUI** in the **JoinEUI** field and click the **Confirm** button.
  ** Enter the **DevEUI** in the **DevEUI** field.
  ** Enter the **AppKey** in the **AppKey** field.
  ** In the **End device ID** field, enter a unique name within this application for your LT-22222-N.
@@ -230,17 +230,17 @@
  * On the **Register end device** page:
  ** Select the **Enter end device specifies manually** option as the input method.
--** Select the **Frequency plan** that matches with your device.
++** Select the **Frequency plan** that matches your device.
  ** Select the **LoRaWAN version**.
  ** Select the **Regional Parameters version**.
  ** Click **Show advanced activation, LoRaWAN class and cluster settings** link to expand the section.
--** Select **Over the air activation (OTAA)** option under **Activation mode**
++** Select **Over the air activation (OTAA)** option under the **Activation mode**
  ** Select **Class C (Continuous)** from the **Additional LoRaWAN class capabilities**.
  [[image:lt-22222-l-manually-p1.png||height="625" width="1000"]]
--* Enter **AppEUI** in the **JoinEUI** field and click **Confirm** button.
++* Enter **AppEUI** in the **JoinEUI** field and click the **Confirm** button.
  * Enter **DevEUI** in the **DevEUI** field.
  * Enter **AppKey** in the **AppKey** field.
  * In the **End device ID** field, enter a unique name within this application for your LT-22222-N.
@@ -259,7 +259,7 @@
  == 3.3 Uplink Payload formats ==
--The LT-22222-L has 5 working modes. It also has an interrupt/trigger mode for different type applications that can be used together with all the working modes as an additional feature. The default mode is MOD1 and you can switch between these modes using AT commands.
++The LT-22222-L has 5 working modes. It also has an interrupt/trigger mode for different types of applications that can be used together with any working mode as an additional feature. The default mode is MOD1 and you can switch between these modes using AT commands.
  * (% style="color:blue" %)**MOD1**(%%): (default mode/factory set): 2 x ACI + 2AVI + DI + DO + RO
@@ -277,7 +277,7 @@
  (((
--In working mode MOD1, the uplink payload includes a total of 11 bytes. Uplink packets are sent over LoRaWAN FPort=2. By default, one uplink is sent every 10 minutes. (% style="display:none" %)
++The uplink payload is 11 bytes long. Uplink packets are sent over LoRaWAN FPort=2. By default, one uplink is sent every 10 minutes. (% style="display:none" wfd-invisible="true" %)
  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
  |(% style="background-color:#4f81bd; color:white" %)**Size(bytes)**|(% style="background-color:#4f81bd; color:white" %)**2**|(% style="background-color:#4f81bd; color:white" %)**2**|(% style="background-color:#4f81bd; color:white" %)**2**|(% style="background-color:#4f81bd; color:white" %)**2**|(% style="background-color:#4f81bd; color:white" %)**1**|(% style="background-color:#4f81bd; color:white" %)**1**|(% style="background-color:#4f81bd; color:white" %)**1**
@@ -295,7 +295,7 @@
  )))
  (((
--(% style="color:#4f81bd" %)*** DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1, for a total of 1 byte ,as shown below
++(% style="color:#4f81bd" %)*** DIDORO**(%%) is a combination of RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1, for a total of 1 byte, as shown below.
  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
  |**bit 7**|**bit 6**|**bit 5**|**bit 4**|**bit 3**|**bit 2**|**bit 1**|**bit 0**
@@ -302,7 +302,7 @@
  |RO1|RO2|--DI3--|DI2|DI1|--DO3--|DO2|DO1
  )))
--* RO is for relay. ROx=1 : closed, ROx=0 always open.
++* RO is for the relay. ROx=1: closed, ROx=0 always open.
  * DI is for digital input. DIx=1: high or floating, DIx=0: low.
  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or floating.
@@ -321,31 +321,32 @@
  ACI2 channel current is 0x1300/1000=4.864mA
--The last byte 0xAA= 10101010(B) means
++The last byte 0xAA= **10101010**(b) means,
--* [1] RO1 relay channel is closed, and the RO1 LED is ON.
--* [0] RO2 relay channel is open, and RO2 LED is OFF.
--* [1] DI2 channel is high input and DI2 LED is ON.
--* [0] DI1 channel is low input.
--* [0] DO3 channel output state
--** DO3 is float in case no load between DO3 and V+.
--** DO3 is high in case there is load between DO3 and V+.
--** DO3 LED is off in both case
--* [1] DO2 channel output is low and DO2 LED is ON.
--* [0] DO1 channel output state
--** DO1 is float in case no load between DO1 and V+.
--** DO1 is high in case there is load between DO1 and V+.
--** DO1 LED is off in both case.
++* [1] The RO1 relay channel is CLOSED, and the RO1 LED is ON.
++* [0] The RO2 relay channel is OPEN, and the RO2 LED is OFF.
++* [1] DI3 - not used for LT-22222-L.
++* [0] DI2 channel input is LOW, and the DI2 LED is OFF.
++* [1] DI1 channel input state:
++** DI1 is FLOATING when no sensor is connected between DI1+ and DI1-.
++** DI1 is HIGH when a sensor is connected between DI1- and DI1+ and the sensor is ACTIVE.
++** DI1 LED is ON in both cases.
++* [0] DO3 - not used for LT-22222-L.
++* [1] DO2 channel output is LOW, and the DO2 LED is ON.
++* [0] DO1 channel output state:
++** DO1 is FLOATING when there is no load between DO1 and V+.
++** DO1 is HIGH when there is a load between DO1 and V+.
++** DO1 LED is OFF in both cases.
  === 3.3.2 AT+MOD~=2, (Double DI Counting) ===
  (((
--**For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
++**For LT-22222-L**: In this mode, the **DI1 and DI2** are used as counting pins.
  )))
  (((
--Total : 11 bytes payload
++The uplink payload is 11 bytes long.
  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
  |(% style="background-color:#4f81bd; color:white" %)**Size(bytes)**|(% style="background-color:#4f81bd; color:white" %)**4**|(% style="background-color:#4f81bd; color:white" %)**4**|(% style="background-color:#4f81bd; color:white" %)**1**|(% style="background-color:#4f81bd; color:white" %)**1**|(% style="background-color:#4f81bd; color:white" %)**1**
@@ -355,26 +355,26 @@
  )))
  (((
--(% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DO3, DO2 and DO1. Totally 1bytes as below
++(% style="color:#4f81bd" %)***DIDORO**(%%) is a combination of RO1, RO2, DO3, DO2 and DO1, for a total of 1 byte, as shown below.
  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
--|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
--|RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
++|**bit 7**|**bit 6**|**bit 5**|**bit 4**|**bit 3**|**bit 2**|**bit 1**|**bit 0**
++|RO1|RO2|FIRST|Reserve|Reserve|--DO3--|DO2|DO1
--RO is for relay. ROx=1 : close , ROx=0 always open.
++* RO is for the relay. ROx=1: closed,  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.
++* FIRST: Indicates that this is the first packet after joining the network.
++* DO is for reverse digital output. DOx=1: output low, DOx=0: high or floating.
  (((
--(% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L.**
++(% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L**
  )))
  (((
--**To use counting mode, please run:**
++**To activate this mode, run the following AT commands:**
  )))
  (((
@@ -395,17 +395,17 @@
  (((
  **For LT22222-L:**
--(% style="color:blue" %)**AT+TRIG1=0,100**(%%)**    (set DI1 port to trigger on low level, valid signal is 100ms) **
++(% style="color:blue" %)**AT+TRIG1=0,100**(%%)** (sets the DI1 port to trigger on a LOW level. The valid signal duration is 100ms) **
--(% style="color:blue" %)**AT+TRIG1=1,100**(%%)**    (set DI1 port to trigger on high level, valid signal is 100ms ) **
++(% style="color:blue" %)**AT+TRIG1=1,100**(%%)** (sets the DI1 port to trigger on a HIGH level. The valid signal duration is 100ms) **
--(% style="color:blue" %)**AT+TRIG2=0,100**(%%)**    (set DI2 port to trigger on low level, valid signal is 100ms) **
++(% style="color:blue" %)**AT+TRIG2=0,100**(%%)** (sets the DI2 port to trigger on a LOW level. The valid signal duration is 100ms) **
--(% style="color:blue" %)**AT+TRIG2=1,100**(%%)**    (set DI2 port to trigger on high level, valid signal is 100ms ) **
++(% style="color:blue" %)**AT+TRIG2=1,100**(%%)** (sets the DI2 port to trigger on a HIGH level. The valid signal duration is 100ms) **
--(% style="color:blue" %)**AT+SETCNT=1,60**(%%)**   (Set COUNT1 value to 60)**
++(% style="color:blue" %)**AT+SETCNT=1,60**(%%)** (sets the COUNT1 value to 60)**
--(% style="color:blue" %)**AT+SETCNT=2,60**(%%)**   (Set COUNT2 value to 60)**
++(% style="color:blue" %)**AT+SETCNT=2,60 **(%%)**(sets the COUNT2 value to 60)**
  )))
@@ -412,7 +412,7 @@
  === 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===
--**LT22222-L**: This mode the DI1 is used as a counting pin.
++**LT22222-L**: In this mode, the DI1 is used as a counting pin.
  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
  |(% style="background-color:#4f81bd; color:white" %)**Size(bytes)**|(% style="background-color:#4f81bd; color:white" %)**4**|(% style="background-color:#4f81bd; color:white" %)**2**|(% style="background-color:#4f81bd; color:white" %)**2**|(% style="background-color:#4f81bd; color:white" %)**1**|(% style="background-color:#4f81bd; color:white" %)**1**|(% style="background-color:#4f81bd; color:white" %)**1**
@@ -423,24 +423,24 @@
  )))|DIDORO*|Reserve|MOD
  (((
--(% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
++(% style="color:#4f81bd" %)***DIDORO**(%%) is a combination of RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1, for a total of 1 byte, as shown below.
  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
--|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
--|RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
++|**bit 7**|**bit 6**|**bit 5**|**bit 4**|**bit 3**|**bit 2**|**bit 1**|**bit 0**
++|RO1|RO2|FIRST|Reserve|Reserve|--DO3--|DO2|DO1
  )))
--* 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.
++* RO is for the relay. ROx=1: closed, ROx=0 always open.
++* FIRST: Indicates that this is the first packet after joining the network.
++* DO is for reverse digital output. DOx=1: output low, DOx=0: high or floating.
  (((
--(% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
++(% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L.**
  )))
  (((
--**To use counting mode, please run:**
++**To activate this mode, run the following AT commands:**
  )))
  (((
@@ -453,7 +453,9 @@
  )))
  (((
--Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
++AT Commands for counting:
++
++The AT Commands for counting are similar to the [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]]s.
  )))
@@ -461,11 +461,11 @@
  (((
--**LT22222-L**: This mode the DI1 is used as a counting pin.
++**LT22222-L**: In 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.
++The AVI1 is also used for counting. It monitors the voltage and checks it every **60 seconds**. If the voltage is higher or lower than VOLMAX mV, the AVI1 count increases by 1, allowing AVI1 counting to be used to measure a machine's working hours.
  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
  |(% style="background-color:#4f81bd; color:white" %)**Size(bytes)**|(% style="background-color:#4f81bd; color:white" %)**4**|(% style="background-color:#4f81bd; color:white" %)**4**|(% style="background-color:#4f81bd; color:white" %)**1**|(% style="background-color:#4f81bd; color:white" %)**1**|(% style="background-color:#4f81bd; color:white" %)**1**
@@ -475,25 +475,25 @@
  )))
  (((
--(% style="color:#4f81bd" %)**DIDORO **(%%)is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
++(% style="color:#4f81bd" %)**DIDORO **(%%)is a combination of RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1, for a total of 1 byte, as shown below.
  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
--|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
--|RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
++|**bit 7**|**bit 6**|**bit 5**|**bit 4**|**bit 3**|**bit 2**|**bit 1**|**bit 0**
++|RO1|RO2|FIRST|Reserve|Reserve|--DO3--|DO2|DO1
  )))
--* 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.
++* RO is for the relay. ROx=1: closed, ROx=0 always open.
++* FIRST: Indicates that this is the first packet after joining the network.
++* DO is for reverse digital output. DOx=1: output low, DOx=0: high or floating.
  (((
--(% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
++(% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L.**
  )))
  (((
--**To use this mode, please run:**
++**To activate this mode, run the following AT commands:**
  )))
  (((
@@ -506,19 +506,19 @@
  )))
  (((
--Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
++Other AT Commands for counting are similar to the [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]]s.
  )))
  (((
--**Plus below command for AVI1 Counting:**
++**In addition to that,  below are the commands for AVI1 Counting:**
--(% style="color:blue" %)**AT+SETCNT=3,60**(%%)**            (set AVI Count to 60)**
++(% style="color:blue" %)**AT+SETCNT=3,60**(%%)**           (Sets AVI Count to 60)**
  (% style="color:blue" %)**AT+VOLMAX=20000**(%%)**       (If AVI1 voltage higher than VOLMAX (20000mV =20v), counter increase 1)**
  (% style="color:blue" %)**AT+VOLMAX=20000,0**(%%)**    (If AVI1 voltage lower than VOLMAX (20000mV =20v), counter increase 1)**
--(% style="color:blue" %)**AT+VOLMAX=20000,1**(%%)**    (If AVI1 voltage higer than VOLMAX (20000mV =20v), counter increase 1)**
++(% style="color:blue" %)**AT+VOLMAX=20000,1**(%%)**    (If AVI1 voltage higher than VOLMAX (20000mV =20v), counter increase 1)**
  )))
@@ -525,7 +525,7 @@
  === 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.
++**LT22222-L**: In this mode, the DI1 is used as a counting pin.
  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
  |(% style="background-color:#4f81bd; color:white" %)**Size(bytes)**|(% style="background-color:#4f81bd; color:white" %)**2**|(% style="background-color:#4f81bd; color:white" %)**2**|(% style="background-color:#4f81bd; color:white" %)**2**|(% style="background-color:#4f81bd; color:white" %)**2**|(% style="background-color:#4f81bd; color:white" %)**1**|(% style="background-color:#4f81bd; color:white" %)**1**|(% style="background-color:#4f81bd; color:white" %)**1**
@@ -540,25 +540,25 @@
  )))|MOD
  (((
--(% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
++(% style="color:#4f81bd" %)**DIDORO**(%%) is a combination of RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1, for a total of 1 byte, as shown below.
  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
--|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
++|**bit 7**|**bit 6**|**bit 5**|**bit 4**|**bit 3**|**bit 2**|**bit 1**|**bit 0**
  |RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
  )))
--* RO is for relay. ROx=1 : close, ROx=0 always open.
--* FIRST: Indicate this is the first packet after join network.
++* RO is for the relay. ROx=1: closed, ROx=0 always open.
++* FIRST: Indicates that this is the first packet after joining the 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 floating.
  )))
  (((
--(% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
++(% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L.**
  )))
  (((
--**To use this mode, please run:**
++**To activate this mode, run the following AT commands:**
  )))
  (((
@@ -571,7 +571,7 @@
  )))
  (((
--Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
++Other AT Commands for counting are similar to the [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]]s.
  )))
@@ -578,23 +578,22 @@
  === 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) ===
--(% style="color:#4f81bd" %)**This mode is an optional mode for trigger purpose. It can run together with other mode.**
++(% style="color:#4f81bd" %)**This mode is optional and intended for trigger purposes. It can operate together with other modes.**
--For example, if user has configured below commands:
++For example, if you configured the following commands:
  * **AT+MOD=1 **            **~-~->**   The normal working mode
--* **AT+ADDMOD6=1**   **~-~->**   Enable trigger
++* **AT+ADDMOD6=1**   **~-~->**   Enable trigger mode
--LT will keep monitoring AV1/AV2/AC1/AC2 every 5 seconds; LT will send uplink packets in two cases:
++The LT-22222-L will continuously monitor AV1, AV2, AC1, and AC2 every 5 seconds. LT will send uplink packets in two cases:
--1. Periodically uplink (Base on TDC time). Payload is same as the normal MOD (MOD 1 for above command). This uplink uses LoRaWAN (% style="color:#4f81bd" %)**unconfirmed**(%%) data type
--1. Trigger uplink when meet the trigger condition. LT will sent two packets in this case, the first uplink use payload specify in this mod (mod=6), the second packets use the normal mod payload(MOD=1 for above settings). Both Uplinks use LoRaWAN (% style="color:#4f81bd" %)**CONFIRMED data type.**
++1. Periodically uplink (Based on TDC time). The payload is the same as in normal mode (MOD=1 for the commands above). These are (% style="color:#4f81bd" %)**unconfirmed**(%%) uplinks.
++1. Trigger uplink when the trigger condition is met. LT will send two packets in this case. The first uplink uses the payload specified in trigger mode (MOD=6). The second packet uses the normal mode payload (MOD=1 as set above). Both are (% style="color:#4f81bd" %)**CONFIRMED uplinks.**
  (% style="color:#037691" %)**AT Command to set Trigger Condition**:
++(% style="color:#4f81bd" %)**Trigger based on voltage**:
--(% style="color:#4f81bd" %)**Trigger base on voltage**:
--
  Format: AT+AVLIM=<AV1_LIMIT_LOW>,< AV1_LIMIT_HIGH>,<AV2_LIMIT_LOW>,< AV2_LIMIT_HIGH>
@@ -605,9 +605,8 @@
  AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
++(% style="color:#4f81bd" %)**Trigger based on current**:
--(% style="color:#4f81bd" %)**Trigger base on current**:
--
  Format: AT+ACLIM=<AC1_LIMIT_LOW>,< AC1_LIMIT_HIGH>,<AC2_LIMIT_LOW>,< AC2_LIMIT_HIGH>
@@ -616,11 +616,10 @@
  AT+ACLIM=10000,15000,0,0   (If ACI1 voltage lower than 10mA or higher than 15mA, trigger an uplink)
++(% style="color:#4f81bd" %)**Trigger based on DI status**:
--(% style="color:#4f81bd" %)**Trigger base on DI status**:
++DI status triggers Flag.
--DI status trigger Flag.
--
  Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >
@@ -661,7 +661,7 @@
  (% style="color:#4f81bd" %)**Trigger Settings Payload Explanation:**
--MOD6 Payload : total 11 bytes payload
++MOD6 Payload: total 11 bytes payload
  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:515px" %)
  |(% style="background-color:#4f81bd; color:white; width:60px" %)**Size(bytes)**|(% style="background-color:#4f81bd; color:white; width:69px" %)**1**|(% style="background-color:#4f81bd; color:white; width:69px" %)**1**|(% style="background-color:#4f81bd; color:white; width:109px" %)**1**|(% style="background-color:#4f81bd; color:white; width:49px" %)**6**|(% style="background-color:#4f81bd; color:white; width:109px" %)**1**|(% style="background-color:#4f81bd; color:white; width:50px" %)**1**
@@ -675,7 +675,7 @@
  MOD(6)
  )))
--(% style="color:#4f81bd" %)**TRI FLAG1**(%%) is a combination to show if trigger is set for this part. Totally 1byte as below
++(% style="color:#4f81bd" %)**TRI FLAG1**(%%) is a combination to show if the trigger is set for this part. Totally 1byte as below
  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:515px" %)
  |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
@@ -1106,7 +1106,7 @@
  )))
  (((
--00: Close ,  01: Open , 11: No action
++00: Closed ,  01: Open , 11: No action
  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:320px" %)
  |(% style="background-color:#4f81bd; color:white" %)**Downlink Code**|(% style="background-color:#4f81bd; color:white" %)**RO1**|(% style="background-color:#4f81bd; color:white" %)**RO2**
@@ -1228,7 +1228,7 @@
--==== 3.4.2.19 Counting ~-~- Change counting mode save time ====
++==== 3.4.2.19 Counting ~-~- Change counting mode to save time ====
  * (% style="color:#037691" %)**AT Command:**
@@ -1414,26 +1414,26 @@
  [[image:thingseye-io-step-6.png||height="625" width="1000"]]
--== 3.6 Interface Detail ==
++== 3.6 Interface Details ==
  === 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
--Support NPN Type sensor
++Support NPN-type sensor
  [[image:1653356991268-289.png]]
--=== 3.6.2 Digital Input Port: DI1/DI2 ( For LT-22222-L) ===
++=== 3.6.2 Digital Input Ports: DI1/DI2 ( For LT-22222-L) ===
  (((
--The DI port of LT-22222-L can support **NPN** or **PNP** or **Dry Contact** output sensor.
++The DI ports of the LT-22222-L can support **NPN**, **PNP**, or **dry contact** output sensors.
  )))
  (((
  (((
--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). (% class="mark" %)When there is active current pass NEC2501 pin1 to pin2. The DI will be active high and DI LED status will change.
++The part of the internal circuit of the LT-22222-L shown below includes the NEC2501 photocoupler. The active current from NEC2501 pin 1 to pin 2 is 1 mA, with a maximum allowable current of 50 mA. When active current flows from NEC2501 pin 1 to pin 2, the DI becomes active HIGH and the DI LED status changes.
  )))
@@ -1443,7 +1443,7 @@
  (((
  (((
--When use need to connect a device to the DI port, both DI1+ and DI1- must be connected.
++(% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant-alternates:normal; font-variant-east-asian:normal; font-variant-ligatures:normal; font-variant-numeric:normal; font-variant-position:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %)When connecting a device to the DI port, both DI1+ and DI1- must be connected.
  )))
  )))
@@ -1452,22 +1452,22 @@
  )))
  (((
--(% style="color:blue" %)**Example1**(%%): Connect to a Low active sensor.
++(% style="color:#0000ff" %)**Example 1**(%%): Connecting to a low-active sensor.
  )))
  (((
--This type of sensor will output a low signal GND when active.
++This type of sensor outputs a low (GND) signal when active.
  )))
  * (((
--Connect sensor's output to DI1-
++Connect the sensor's output to DI1-
  )))
  * (((
--Connect sensor's VCC to DI1+.
++Connect the sensor's VCC to DI1+.
  )))
  (((
--So when sensor active, the current between NEC2501 pin1 and pin2 is：
++When the sensor is active, the current between NEC2501 pin 1 and pin 2 will be：
  )))
  (((
@@ -1475,7 +1475,7 @@
  )))
  (((
--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.
++For example, if** DI1+ **= **12V**, the resulting current is [[image:1653968155772-850.png||height="23" width="19"]]= 12mA. Therefore, the LT-22222-L will be able to detect this active signal.
  )))
  (((
@@ -1483,22 +1483,22 @@
  )))
  (((
--(% style="color:blue" %)**Example2**(%%): Connect to a High active sensor.
++(% style="color:#0000ff" %)**Example 2**(%%): Connecting to a high-active sensor.
  )))
  (((
--This type of sensor will output a high signal (example 24v) when active.
++This type of sensor outputs a high signal (e.g., 24V) when active.
  )))
  * (((
--Connect sensor's output to DI1+
++Connect the sensor's output to DI1+
  )))
  * (((
--Connect sensor's GND DI1-.
++Connect the sensor's GND DI1-.
  )))
  (((
--So when sensor active, the current between NEC2501 pin1 and pin2 is:
++When the sensor is active, the current between NEC2501 pin1 and pin2 will be:
  )))
  (((
@@ -1506,7 +1506,7 @@
  )))
  (((
--If **DI1+ = 24v**, the[[image:1653968155772-850.png||height="23" width="19"]] 24mA , So the LT-22222-L will be able to detect this high active signal.
++If **DI1+ = 24V**, the resulting current[[image:1653968155772-850.png||height="23" width="19"]] is 24mA, Therefore, the LT-22222-L will detect this high-active signal.
  )))
  (((
@@ -1514,22 +1514,22 @@
  )))
  (((
--(% style="color:blue" %)**Example3**(%%): Connect to a 220v high active sensor.
++(% style="color:#0000ff" %)**Example 3**(%%): Connecting to a 220V high-active sensor.
  )))
  (((
--Assume user want to monitor an active signal higher than 220v, to make sure not burn the photocoupler
++Assume that you want to monitor an active signal higher than 220V without damaging the photocoupler
  )))
  * (((
--Connect sensor's output to DI1+ with a serial 50K resistor
++Connect the sensor's output to DI1+ with a 50K resistor in series.
  )))
  * (((
--Connect sensor's GND DI1-.
++Connect the sensor's GND DI1-.
  )))
  (((
--So when sensor active, the current between NEC2501 pin1 and pin2 is:
++When the sensor is active, the current between NEC2501 pin1 and pin2 will be:
  )))
  (((
@@ -1537,37 +1537,37 @@
  )))
  (((
--If sensor output is 220v, the [[image:1653968155772-850.png||height="23" width="19"]](% 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.
++If the sensor output is 220V, then [[image:1653968155772-850.png||height="23" width="19"]](% id="cke_bm_243359S" style="display:none" wfd-invisible="true" %)[[image:image-20220524095628-8.png]](%%) = DI1+ / 51K  = 4.3mA. Therefore, the LT-22222-L will be able to safely detect this high-active signal.
  )))
--(% style="color:blue" %)**Example4**(%%): Connect to Dry Contact sensor
++(% style="color:blue" %)**Example4**(%%): Connecting to Dry Contact sensor
--From above DI ports circuit, we can see that active the photocoupler will need to have a voltage difference between DI+ and DI- port. While the Dry Contact sensor is a passive component which can't provide this voltage difference.
++From the DI port circuit above, you can see that activating the photocoupler requires a voltage difference between the DI+ and DI- ports. However, the Dry Contact sensor is a passive component and cannot provide this voltage difference.
--To detect a Dry Contact, we can provide a power source to one pin of the Dry Contact. Below is a reference connection.
++To detect a Dry Contact, you can supply a power source to one pin of the Dry Contact. Below is a reference circuit diagram.
  [[image:image-20230616235145-1.png]]
--(% style="color:blue" %)**Example5**(%%): Connect to Open Colleactor
++(% style="color:blue" %)**Example5**(%%): Connecting to an Open Collector
  [[image:image-20240219115718-1.png]]
--=== 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
++=== 3.6.3 Digital Output Ports: DO1/DO2 /DO3 ===
--(% style="color:blue" %)**NPN output**(%%): GND or Float. Max voltage can apply to output pin is 36v.
++(% style="color:blue" %)**NPN output**(%%): GND or Float. The maximum voltage that can be applied to the output pin is 36V.
--(% style="color:red" %)**Note: DO pins go to float when device is power off.**
++(% style="color:red" %)**Note: The DO pins will float when the device is powered off.**
  [[image:1653357531600-905.png]]
--=== 3.6.4 Analog Input Interface ===
++=== 3.6.4 Analog Input Interfaces ===
--The analog input interface is as below. The LT will measure the IN2 voltage so to calculate the current pass the Load. The formula is:
++The analog input interface is shown below. The LT-22222-L will measure the IN2 voltage to calculate the current passing through the load. The formula is:
  (% style="color:blue" %)**AC2 = (IN2 voltage )/12**
@@ -1574,14 +1574,14 @@
  [[image:1653357592296-182.png]]
--Example to connect a 4~~20mA sensor
++Example:  Connecting a 4~~20mA sensor
--We take the wind speed sensor as an example for reference only.
++We will use the wind speed sensor as an example for reference only.
  (% style="color:blue" %)**Specifications of the wind speed sensor:**
--(% style="color:red" %)**Red:      12~~24v**
++(% style="color:red" %)**Red:      12~~24V**
  (% style="color:#ffc000" %)**Yellow:  4~~20mA**
@@ -1594,7 +1594,7 @@
  [[image:1653357648330-671.png||height="155" width="733"]]
--Example connected to a regulated power supply to measure voltage
++Example: Connecting to a regulated power supply to measure voltage
  [[image:image-20230608101532-1.png||height="606" width="447"]]
@@ -1603,7 +1603,7 @@
  [[image:image-20230608101722-3.png||height="102" width="1139"]]
--(% style="color:blue; font-weight:bold" %)**Specifications of the regulated power**(%%) (% style="color:blue" %)**:**
++(% style="color:blue; font-weight:bold" %)**Specifications of the regulated power supply**(% style="color:blue" %)**:**
  (% style="color:red" %)**Red:      12~~24v**
@@ -1614,9 +1614,9 @@
  (((
--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-22222-L has two relay interfaces, RO1 and RO2, each using two pins of the screw terminal (ROx-1 and ROx-2 where x is the port number, 1 or 2). You can connect a device's power line in series with one of the relay interfaces (e.g., RO1-1 and RO1-2 screw terminals). See the example below:
--**Note**: RO pins go to Open(NO) when device is power off.
++**Note**: The ROx pins will be in the Open (NO) state when the LT-22222-L is powered off.
  )))
  [[image:image-20220524100215-9.png]]
@@ -1644,25 +1644,25 @@
  Transmit a LoRa packet: TX blinks once
  )))
  )))
--|**RX**|RX blinks once when receive a packet.
--|**DO1**|For LT-22222-L: ON when DO1 is low, LOW when DO1 is high
--|**DO2**|For LT-22222-L: ON when DO2 is low, LOW when DO2 is high
++|**RX**|RX blinks once when receiving a packet.
++|**DO1**|For LT-22222-L: ON when DO1 is low, OFF when DO1 is high
++|**DO2**|For LT-22222-L: ON when DO2 is low, OFF when DO2 is high
  |**DI1**|(((
--For LT-22222-L: ON when DI1 is high, LOW when DI1 is low
++For LT-22222-L: ON when DI1 is high, OFF when DI1 is low
  )))
  |**DI2**|(((
--For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
++For LT-22222-L: ON when DI2 is high, OFF when DI2 is low
  )))
--|**RO1**|For LT-22222-L: ON when RO1 is closed, LOW when RO1 is open
--|**RO2**|For LT-22222-L: ON when RO2 is closed, LOW when RO2 is open
++|**RO1**|For LT-22222-L: ON when RO1 is closed, OFF when RO1 is open
++|**RO2**|For LT-22222-L: ON when RO2 is closed, OFF when RO2 is open
--= 4. Use AT Command =
++= 4. Using AT Command =
--== 4.1 Access AT Command ==
++== 4.1 Connecting the LT-22222-L to a computer ==
  (((
--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.
++The LT-22222-L supports programming using AT Commands. You can use a USB-to-TTL adapter along with a 3.5mm Program Cable to connect the LT-22222-L to a computer, as shown below.
  )))
  [[image:1653358238933-385.png]]
@@ -1669,7 +1669,7 @@
  (((
--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:
++On the PC, the user needs to set the (% style="color:#4f81bd" %)**serial tool**(%%)(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) to a baud rate of (% style="color:green" %)**9600**(%%) to access to access serial console of LT-22222-L. The AT commands are disabled by default, and a password (default:(% style="color:green" %)**123456**)(%%) must be entered to active them, as shown below:
  )))
  [[image:1653358355238-883.png]]
@@ -1676,10 +1676,12 @@
  (((
--More detail AT Command manual can be found at [[AT Command Manual>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/]]
++You can find more details in the [[AT Command Manual>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/]]
  )))
  (((
++The following table lists all the AT commands related to the LT-22222-L, except for those used for switching between modes.
++
  AT+<CMD>?        : Help on <CMD>
  )))
@@ -2004,10 +2004,10 @@
  = 5. Case Study =
--== 5.1 Counting how many objects pass in Flow Line ==
++== 5.1 Counting how many objects pass through the flow Line ==
--Reference Link: [[How to set up to count objects pass in flow line>>How to set up to count objects pass in flow line]]?
++Reference Link: [[How to set up to setup counting for objects passing through the flow line>>How to set up to count objects pass in flow line]]?
  = 6. FAQ =
@@ -2015,26 +2015,26 @@
  == 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:
++The LT-22222-L I/O Controller is shipped with a 3.5mm cable, which is used to upload an image to LT in order to:
--* Support new features
--* For bug fix
++* Support new features.
++* Fix bugs.
  * Change LoRaWAN bands.
--Below shows the hardware connection for how to upload an image to the LT:
++Below is the hardware connection setup for uploading an image to the LT:
  [[image:1653359603330-121.png]]
  (((
--(% 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>>https://www.dropbox.com/sh/g99v0fxcltn9r1y/AACrbrDN0AqLHbBat0ViWx5Da/LT-22222-L/Firmware?dl=0&subfolder_nav_tracking=1]].
--(% style="color:blue" %)**Step3**(%%)**:** Open flashloader; choose the correct COM port to update.
++(% style="color:#0000ff" %)**Step 1**(%%)**:** Download the F[[lash 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:#0000ff" %)**Step 2**(%%)**:** Download the [[LT Image files>>https://www.dropbox.com/sh/g99v0fxcltn9r1y/AACrbrDN0AqLHbBat0ViWx5Da/LT-22222-L/Firmware?dl=0&subfolder_nav_tracking=1]].
++(% style="color:#0000ff" %)**Step 3**(%%)**:** Open the Flash Loader and 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.
++Hold down the PRO button, then momentarily press the RST reset button. The (% style="color:red" %)**DO1 LED**(%%) will change from OFF to ON. When the (% style="color:red" %)**DO1 LED**(%%) is ON, it indicates that the device is in download mode.
  )))
@@ -2049,7 +2049,7 @@
  [[image:image-20220524104033-15.png]]
--(% style="color:red" %)**Notice**(%%): In case user has lost the program cable. User can hand made one from a 3.5mm cable. The pin mapping is:
++(% style="color:red" %)**Note**(%%): If you have lost the programming cable, you can make one from a 3.5mm cable. The pin mapping is as follows:
  [[image:1653360054704-518.png||height="186" width="745"]]
@@ -2063,13 +2063,13 @@
  )))
  (((
--User can follow the introduction for [[how to upgrade image>>||anchor="H5.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
++You can follow the introductions on [[how to upgrade image>>||anchor="H5.1Howtoupgradetheimage3F"]]. When downloading, select the required image file.
  )))
  (((
--== 6.3 How to set up LT to work with Single Channel Gateway such as LG01/LG02? ==
++== 6.3 How to set up LT to work with a Single Channel Gateway, such as LG01/LG02? ==
  )))
@@ -2076,13 +2076,13 @@
  (((
  (((
--In this case, users need to set LT-33222-L to work in ABP mode & transmit in only one frequency.
++In this case, you need to set the LT-33222-L to work in ABP mode and transmit on only one frequency.
  )))
  )))
  (((
  (((
--Assume we have a LG02 working in the frequency 868400000 now , below is the step.
++Assume you have an LG02 working on the frequency 868400000. Below are the steps.
  )))
@@ -2089,7 +2089,7 @@
  )))
  (((
--(% 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.
++(% style="color:#0000ff" %)**Step 1**(%%):  Log in to The Things Stack SANDBOX, create an ABP device in the application, and input the Network Session key (NwkSKey), App session key (AppSKey) of the device.
  )))
@@ -2146,7 +2146,7 @@
  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/]]
--== 6.5 Can I see counting event in Serial? ==
++== 6.5 Can I see the counting event in Serial? ==
  (((
@@ -2153,10 +2153,10 @@
  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.
--== 6.6 Can i use point to point communication for LT-22222-L? ==
++== 6.6 Can I use point-to-point communication with 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]].
++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]].
  )))

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