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Last modified by Xiaoling on 2025/04/23 15:57
From version 29.42
edited by Xiaoling
on 2022/06/02 09:13
Change comment: There is no comment for this version
To version 30.1
edited by Xiaoling
on 2022/06/02 09:18
Change comment: Uploaded new attachment "1654132684752-193.png", version {1}

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771 771  
772 772  
773 773  
774 -==== [[RS485 Debug Command>>path:#downlink_A8]] (AT+CFGDEV) ====
774 +==== **RS485 Debug Command (AT+CFGDEV)** ====
775 775  
776 776  This command is used to configure the RS485 or TTL sensors; they won’t be used during sampling.
777 777  
778 -* AT Command
778 +* **AT Command**
779 779  
780 780  AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
781 781  
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782 782  m: 0: no CRC; 1: add CRC-16/MODBUS in the end of this command.
783 783  
784 784  
785 +* **Downlink Payload**
785 785  
786 -* Downlink Payload
787 -
788 788  Format: A8 MM NN XX XX XX XX YY
789 789  
790 790  Where:
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794 794  * XX XX XX XX: RS485 command total NN bytes
795 795  * YY: How many bytes will be uplink from the return of this RS485 command, if YY=0, RS485-BL will execute the downlink command without uplink; if YY>0, RS485-BL will uplink total YY bytes from the output of this RS485 command
796 796  
796 +
797 797  **Example 1:**
798 798  
799 799  To connect a Modbus Alarm with below commands.
1654132684752-193.png
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1 +XWiki.Xiaoling
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