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Last modified by Xiaoling on 2025/04/23 15:57
From version 31.1
edited by Xiaoling
on 2022/06/02 09:38
Change comment: Uploaded new attachment "1654133913295-597.png", version {1}
To version 32.4
edited by Xiaoling
on 2022/06/02 09:40
Change comment: There is no comment for this version

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906 906  
907 907  
908 908  
909 -==== Fast command to handle MODBUS device ====
909 +==== **Fast command to handle MODBUS device** ====
910 910  
911 911  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]].
912 912  
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913 913  This command is valid since v1.3 firmware version
914 914  
915 915  
916 -AT+MBFUN has only two value:
916 +**AT+MBFUN has only two value:**
917 917  
918 -* AT+MBFUN=1: Enable Modbus reading. And get response base on the MODBUS return
918 +* **AT+MBFUN=1**: Enable Modbus reading. And get response base on the MODBUS return
919 919  
920 920  AT+MBFUN=1, device can auto read the Modbus function code: 01, 02, 03 or 04. AT+MBFUN has lower priority vs AT+DATACUT command. If AT+DATACUT command is configured, AT+MBFUN will be ignore.
921 921  
922 -* AT+MBFUN=0: Disable Modbus fast reading.
922 +* **AT+MBFUN=0**: Disable Modbus fast reading.
923 923  
924 -Example:
925 925  
925 +**Example:**
926 +
926 926  * AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2 are not configure (0,0,0).
927 927  * AT+COMMAND1= 01 03 00 10 00 08,1 ~-~-> read slave address 01 , function code 03, start address 00 01, quantity of registers 00 08.
928 928  * AT+COMMAND2= 01 02 00 40 00 10,1 ~-~-> read slave address 01 , function code 02, start address 00 40, quantity of inputs 00 10.
929 929  
930 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image025.png]]
931 +[[image:1654133913295-597.png]]
931 931  
932 932  
933 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image026.png]]
934 +[[image:1654133954153-643.png]]
934 934  
935 935  
936 -* Downlink Commands:
937 +* **Downlink Commands:**
937 937  
938 -A9 aa -à Same as AT+MBFUN=aa
939 +**A9 aa** ~-~-> Same as AT+MBFUN=aa
939 939  
940 940  
941 -==== RS485 command timeout ====
942 942  
943 +==== **RS485 command timeout** ====
944 +
943 943  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.
944 944  
945 945  Default value: 0, range:  0 ~~ 5 seconds
946 946  
947 947  
948 -* AT Command:
950 +* **AT Command:**
949 949  
950 -AT+CMDDLaa=hex(bb cc)
952 +(% class="box infomessage" %)
953 +(((
954 +**AT+CMDDLaa=hex(bb cc)**
955 +)))
951 951  
952 952  Example:
953 953  
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954 954  **AT+CMDDL1=1000** to send the open time to 1000ms
955 955  
956 956  
957 -* Downlink Payload:
962 +* **Downlink Payload:**
958 958  
959 959  0x AA aa bb cc
960 960  
1654133954153-643.png
Author
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1 +XWiki.Xiaoling
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1 +91.2 KB
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