Changes for page RS485-LN – RS485 to LoRaWAN Converter User Manual

Last modified by Karry Zhuang on 2025/03/06 16:34

From version < 22.1 >

edited by Xiaoling
on 2022/05/23 09:10

To version < 23.1 >

edited by Xiaoling
on 2022/05/23 09:30

Change comment: Uploaded new attachment "1653269403619-508.png", version {1}

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@@ -41,17 +41,17 @@
  **Hardware System:**
  * STM32L072CZT6 MCU
--* SX1276/78 Wireless Chip
++* SX1276/78 Wireless Chip
  * Power Consumption (exclude RS485 device):
  ** Idle: 32mA@12v
--*
++*
  ** 20dB Transmit: 65mA@12v
  **Interface for Model:**
  * RS485
--* Power Input 7~~ 24V DC.
++* Power Input 7~~ 24V DC.
  **LoRa Spec:**
@@ -138,24 +138,29 @@
  [[image:1653268155545-638.png||height="334" width="724"]]
  (((
--The RS485-BL in this example connected to two RS485 devices for demonstration, user can connect to other RS485 devices via the same method.
--)))
++The RS485-LN in this example connected to two RS485 devices for demonstration, user can connect to other RS485 devices via the same method. The connection is as below:
++485A+ and 485B- of the sensor are connected to RS485A and RA485B of RS485-LN respectively.
++
++[[image:1653268227651-549.png||height="592" width="720"]]
++
  (((
--The LG308 is already set to connect to [[TTN V3 network >>url:https://www.thethingsnetwork.org/]]. So what we need to now is only configure the TTN V3:
++The LG308 is already set to connect to [[TTN V3 network >>path:eu1.cloud.thethings.network/]]. So what we need to now is only configure the TTN V3:
  )))
  (((
--**Step 1**: Create a device in TTN V3 with the OTAA keys from RS485-BL.
++**Step 1**: Create a device in TTN V3 with the OTAA keys from RS485-LN.
  )))
  (((
--Each RS485-BL is shipped with a sticker with unique device EUI:
++Each RS485-LN is shipped with a sticker with unique device EUI:
  )))
++)))
  [[image:1652953462722-299.png]]
  (((
++(((
  User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
  )))
@@ -162,13 +162,11 @@
  (((
  Add APP EUI in the application.
  )))
++)))
--
--
--
  [[image:image-20220519174512-1.png]]
--[[image:image-20220519174512-2.png||height="328" width="731"]]
++[[image:image-20220519174512-2.png||height="323" width="720"]]
  [[image:image-20220519174512-3.png||height="556" width="724"]]
@@ -184,7 +184,7 @@
  (((
--**Step 2**: Power on RS485-BL and it will auto join to the TTN V3 network. After join success, it will start to upload message to TTN V3 and user can see in the panel.
++**Step 2**: Power on RS485-LN and it will auto join to the TTN V3 network. After join success, it will start to upload message to TTN V3 and user can see in the panel.
  )))
  [[image:1652953568895-172.png||height="232" width="724"]]
@@ -192,23 +192,19 @@
  == 3.3 Configure Commands to read data ==
  (((
--There are plenty of RS485 and TTL level devices in the market and each device has different command to read the valid data. To support these devices in flexible, RS485-BL supports flexible command set. User can use [[AT Commands or LoRaWAN Downlink>>path:#AT_COMMAND]] Command to configure how RS485-BL should read the sensor and how to handle the return from RS485 or TTL sensors.
++(((
++There are plenty of RS485 devices in the market and each device has different command to read the valid data. To support these devices in flexible, RS485-LN supports flexible command set. User can use [[AT Commands>>path:#AT_COMMAND]] or LoRaWAN Downlink Command to configure what commands RS485-LN should send for each sampling and how to handle the return from RS485 devices.
  )))
++(((
++(% style="color:red" %)Note: below description and commands are for firmware version >v1.1, if you have firmware version v1.0. Please check the [[user manual v1.0>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/&file=RS485-LN_UserManual_v1.0.1.pdf]] or upgrade the firmware to v1.1
++)))
++)))
++
  === 3.3.1 onfigure UART settings for RS485 or TTL communication ===
--RS485-BL can connect to either RS485 sensors or TTL sensor. User need to specify what type of sensor need to connect.
++To use RS485-LN to read data from RS485 sensors, connect the RS485-LN A/B traces to the sensors. And user need to make sure RS485-LN use the match UART setting to access the sensors. The related commands for UART settings are:
--**~1. RS485-MODBUS mode:**
--
--AT+MOD=1 ~/~/ Support RS485-MODBUS type sensors. User can connect multiply RS485 , Modbus sensors to the A / B pins.
--
--**2. TTL mode:**
--
--AT+MOD=2 ~/~/ Support TTL Level sensors, User can connect one TTL Sensor to the TXD/RXD/GND pins.
--
--RS485-BL default UART settings is **9600, no parity, stop bit 1**. If the sensor has a different settings, user can change the RS485-BL setting to match.
--
  (% border="1" style="background-color:#ffffcc; color:green; width:795px" %)
  |(((
  **AT Commands**
@@ -233,13 +233,7 @@
  |(((
  AT+PARITY
  )))|(% style="width:285px" %)(((
--(((
  Set UART parity (for RS485 connection)
--)))
--
--(((
--Default Value is: no parity.
--)))
  )))|(% style="width:347px" %)(((
  (((
  AT+PARITY=0
@@ -257,7 +257,7 @@
  )))
  (((
--Default Value is: 1bit.
++
  )))
  )))|(% style="width:347px" %)(((
  (((
@@ -276,12 +276,10 @@
  === 3.3.2 Configure sensors ===
  (((
--Some sensors might need to configure before normal operation. User can configure such sensor via PC or through RS485-BL AT Commands (% style="color:#4f81bd" %)**AT+CFGDEV**.
--)))
--
  (((
--When user issue an (% style="color:#4f81bd" %)**AT+CFGDEV**(%%) command, Each (% style="color:#4f81bd" %)**AT+CFGDEV**(%%) equals to send a command to the RS485 or TTL sensors. This command will only run when user input it and won’t run during each sampling.
++Some sensors might need to configure before normal operation. User can configure such sensor via PC and RS485 adapter or through RS485-LN AT Commands (% style="color:#4f81bd" %)**AT+CFGDEV**(%%). Each (% style="color:#4f81bd" %)**AT+CFGDEV **(%%)equals to send a RS485 command to sensors. This command will only run when user input it and won’t run during each sampling.
  )))
++)))
  (% border="1" style="background-color:#ffffcc; color:green; width:806px" %)
  |**AT Commands**|(% style="width:418px" %)**Description**|(% style="width:256px" %)**Example**
@@ -293,8 +293,6 @@
  mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
  )))|(% style="width:256px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
--Detail of AT+CFGDEV command see [[AT+CFGDEV detail>>path:#AT_CFGDEV]].
--
  === 3.3.3 Configure read commands for each sampling ===
  (((
@@ -461,7 +461,7 @@
 .
--11.
++11.
 . Compose the uplink payload
  Through AT+COMMANDx and AT+DATACUTx we got valid value from each RS485 commands, Assume these valid value are RETURN1, RETURN2, .., to RETURNx. The next step is how to compose the LoRa Uplink Payload by these RETURNs. The command is **AT+DATAUP.**
@@ -525,8 +525,8 @@
--1.
--11.
++1.
++11.
 . Uplink on demand
  Except uplink periodically, RS485-BL is able to uplink on demand. The server sends downlink command to RS485-BL and RS485 will uplink data base on the command.
@@ -539,8 +539,8 @@
--1.
--11.
++1.
++11.
 . Uplink on Interrupt
  Put the interrupt sensor between 3.3v_out and GPIO ext.[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image022.png]]
@@ -554,7 +554,7 @@
  AT+INTMOD=3  Interrupt trigger by rising edge.
--1.
++1.
 . Uplink Payload
  |**Size(bytes)**|**2**|**1**|**Length depends on the return from the commands**
@@ -616,15 +616,15 @@
  * **Sensor Related Commands**: These commands are special designed for RS485-BL.  User can see these commands below:
--1.
--11.
++1.
++11.
 . Common Commands:
  They should be available for each of Dragino Sensors, such as: change uplink interval, reset device. For firmware v1.3, user can find what common commands it supports: [[http:~~/~~/wiki.dragino.com/index.php?title=End_Device_AT_Commands_and_Downlink_Commands>>url:http://wiki.dragino.com/index.php?title=End_Device_AT_Commands_and_Downlink_Commands]]
--1.
--11.
++1.
++11.
 . Sensor related commands:
  ==== Choose Device Type (RS485 or TTL) ====
@@ -930,13 +930,13 @@
--1.
++1.
 . Buttons
  |**Button**|**Feature**
  |**RST**|Reboot RS485-BL
--1.
++1.
 . +3V3 Output
  RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor.
@@ -954,7 +954,7 @@
  By default, the AT+3V3T=0. This is a special case, means the +3V3 output is always on at any time
--1.
++1.
 . +5V Output
  RS485-BL has a Controllable +5V output, user can use this output to power external sensor.
@@ -974,13 +974,13 @@
--1.
++1.
 . LEDs
  |**LEDs**|**Feature**
  |**LED1**|Blink when device transmit a packet.
--1.
++1.
 . Switch Jumper
  |**Switch Jumper**|**Feature**
@@ -1026,7 +1026,7 @@
--1.
++1.
 . Common AT Command Sequence
 . Multi-channel ABP mode (Use with SX1301/LG308)
@@ -1045,8 +1045,8 @@
  ATZ
--1.
--11.
++1.
++11.
 . Single-channel ABP mode (Use with LG01/LG02)
  AT+FDR   Reset Parameters to Factory Default, Keys Reserve
@@ -1121,7 +1121,7 @@
  [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image035.png]]   [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image036.png]]
--1.
++1.
 . How to change the LoRa Frequency Bands/Region?
  User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download.
@@ -1128,7 +1128,7 @@
--1.
++1.
 . How many RS485-Slave can RS485-BL connects?
  The RS485-BL can support max 32 RS485 devices. Each uplink command of RS485-BL can support max 16 different RS485 command. So RS485-BL can support max 16 RS485 devices pre-program in the device for uplink. For other devices no pre-program, user can use the [[downlink message (type code 0xA8) to poll their info>>path:#downlink_A8]].
@@ -1145,7 +1145,7 @@
--1.
++1.
 . Why I can’t join TTN V3 in US915 /AU915 bands?
  It might about the channels mapping. Please see for detail.

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Changes for page RS485-LN – RS485 to LoRaWAN Converter User Manual

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