Changes for page RS485-BL – Waterproof RS485 to LoRaWAN Converter

Last modified by Xiaoling on 2025/04/23 15:57

From 41.3 to 41.4 From 41.26 to 41.27

From version 41.4

edited by Xiaoling
on 2022/06/06 10:54

Change comment: There is no comment for this version

To version 41.26

edited by Xiaoling
on 2022/06/06 11:11

Change comment: There is no comment for this version

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@@ -510,6 +510,10 @@
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  **AT+SEARCHx**: This command defines how to handle the return from AT+COMMANDx.
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  == 3.5 Configure RS485-BL via AT or Downlink ==
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  User can configure RS485-BL via AT Commands or LoRaWAN Downlink Commands
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  There are two kinds of Commands:
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--* (% style="color:#4f81bd" %)**Common Commands**(%%): They should be available for each sensor, such as: change uplink interval, reset device. For firmware v1.3, user can find what common commands it supports: [[AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
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++(% style="color:#4f81bd" %)**Common Commands**(%%): They should be available for each sensor, such as: change uplink interval, reset device. For firmware v1.3, user can find what common commands it supports: [[AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
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--* (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-BL.  User can see these commands below:
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++(% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-BL.  User can see these commands below:
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  === 3.5.2 Sensor related commands: ===
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  ==== **Choose Device Type (RS485 or TTL)** ====
  RS485-BL can connect to either RS485 sensors or TTL sensor. User need to specify what type of sensor need to connect.
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  ==== **RS485 Debug Command (AT+CFGDEV)** ====
  This command is used to configure the RS485 or TTL sensors; they won’t be used during sampling.
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  (% style="color:#037691" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
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  A8 is type code and 01 means add CRC-16/MODBUS at the end, the 3^^rd^^ byte is 06, means the next 6 bytes are the command to be sent to the RS485 network, the final byte 00 means this command don’t need to acquire output.
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  **Example 2:**
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  ==== **Set Payload version** ====
  This is the first byte of the uplink payload. RS485-BL can connect to different sensors. User can set the PAYVER field to tell server how to decode the current payload.
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  ==== **Set RS485 Sampling Commands** ====
  AT+COMMANDx, AT+DATACUTx and AT+SEARCHx
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  ==== **Fast command to handle MODBUS device** ====
  AT+MBFUN is valid since v1.3 firmware version. The command is for fast configure to read Modbus devices. It is only valid for the devices which follow the [[MODBUS-RTU protocol>>url:https://www.modbustools.com/modbus.html]].
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  ==== **RS485 command timeout** ====
  Some Modbus device has slow action to send replies. This command is used to configure the RS485-BL to use longer time to wait for their action.
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  ==== **Uplink payload mode** ====
  Define to use one uplink or multiple uplinks for the sampling.
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  * **AT Command:**
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  (% style="color:#037691" %)**AT+CMDEAR=mm,nn** (%%)    mm: start position of erase ,nn: stop position of erase Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
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  Example screen shot after clear all RS485 commands.
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  ==== **Set Serial Communication Parameters** ====
  Set the Rs485 serial communication parameters:
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  ==== **Control output power duration** ====
  User can set the output power duration before each sampling.
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  == 3.6 Buttons ==
--(% border="1" style="background-color:#ffffcc; color:green; width:233px" %)
++(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:233px" %)
  |=(% style="width: 89px;" %)**Button**|=(% style="width: 141px;" %)**Feature**
  |(% style="width:89px" %)**RST**|(% style="width:141px" %)Reboot RS485-BL
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  == 3.7 +3V3 Output ==
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  RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor.
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  The +3V3 output will be valid for every sampling. RS485-BL will enable +3V3 output before all sampling and disable the +3V3 after all sampling.
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  The +3V3 output time can be controlled by AT Command.
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  (% style="color:#037691" %)**AT+3V3T=1000**
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  Means set +3v3 valid time to have 1000ms. So, the real +3v3 output will actually have 1000ms + sampling time for other sensors.
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  By default, the AT+3V3T=0. This is a special case, means the +3V3 output is always on at any time
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  == 3.8 +5V Output ==
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  RS485-BL has a Controllable +5V output, user can use this output to power external sensor.
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  The +5V output will be valid for every sampling. RS485-BL will enable +5V output before all sampling and disable the +5v after all sampling.
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  The 5V output time can be controlled by AT Command.
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  (% style="color:#037691" %)**AT+5VT=1000**
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  Means set 5V valid time to have 1000ms. So, the real 5V output will actually have 1000ms + sampling time for other sensors.
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  By default, the AT+5VT=0. If the external sensor which require 5v and require more time to get stable state, user can use this command to increase the power ON duration for this sensor.
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  == 3.9 LEDs ==
  (% border="1" style="background-color:#ffffcc; color:green; width:332px" %)
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  |=**LEDs**|=(% style="width: 274px;" %)**Feature**
  |**LED1**|(% style="width:274px" %)Blink when device transmit a packet.
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  == 3.10 Switch Jumper ==
  (% border="1" style="background-color:#ffffcc; color:green; width:515px" %)
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 .3v position: set to compatible with 3.3v I/O.,
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  **+3.3V**: is always ON
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  **+5V**: Only open before every sampling. The time is by default, it is AT+5VT=0.  Max open time. 5000 ms.
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  = 4. Case Study =
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  == 5.1 Access AT Command ==
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  RS485-BL supports AT Command set. User can use a USB to TTL adapter plus the 3.5mm Program Cable to connect to RS485-BL to use AT command, as below.
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  [[image:1654135840598-282.png]]
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  In PC, User needs to set (% style="color:blue" %)**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 of RS485-BL. The default password is 123456. Below is the output for reference:
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  [[image:1654136105500-922.png]]
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  More detail AT Command manual can be found at [[AT Command Manual>>||anchor="H3.5ConfigureRS485-BLviaATorDownlink"]]
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  == 5.2 Common AT Command Sequence ==

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