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

From version 41.33
edited by Xiaoling
on 2022/06/06 11:18
Change comment: There is no comment for this version
To version 41.32
edited by Xiaoling
on 2022/06/06 11:16
Change comment: There is no comment for this version

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939 939  
940 940  ==== **RS485 Debug Command (AT+CFGDEV)** ====
941 941  
942 -(((
943 943  This command is used to configure the RS485 or TTL sensors; they won’t be used during sampling.
944 -)))
945 945  
946 -* (((
947 -**AT Command**
948 -)))
944 +* **AT Command**
949 949  
950 950  (% class="box infomessage" %)
951 951  (((
952 -(((
953 953  **AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m**
954 954  )))
955 -)))
956 956  
957 -(((
958 958  m: 0: no CRC; 1: add CRC-16/MODBUS in the end of this command.
959 -)))
960 960  
961 -(((
962 -
963 -)))
964 964  
965 -* (((
966 -**Downlink Payload**
967 -)))
954 +* **Downlink Payload**
968 968  
969 -(((
970 970  Format: A8 MM NN XX XX XX XX YY
971 -)))
972 972  
973 -(((
974 974  Where:
975 -)))
976 976  
977 -* (((
978 -MM: 1: add CRC-16/MODBUS ; 0: no CRC
979 -)))
980 -* (((
981 -NN: The length of RS485 command
982 -)))
983 -* (((
984 -XX XX XX XX: RS485 command total NN bytes
985 -)))
986 -* (((
987 -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
988 -)))
960 +* MM: 1: add CRC-16/MODBUS ; 0: no CRC
961 +* NN: The length of RS485 command
962 +* XX XX XX XX: RS485 command total NN bytes
963 +* 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
989 989  
990 -(((
991 991  **Example 1:**
992 -)))
993 993  
994 -(((
995 995  To connect a Modbus Alarm with below commands.
996 -)))
997 997  
998 -* (((
999 -The command to active alarm is: 0A 05 00 04 00 01 **4C B0**. Where 0A 05 00 04 00 01 is the Modbus command to read the register 00 40 where stored the DI status. The 4C B0 is the CRC-16/MODBUS which calculate manually.
1000 -)))
969 +* The command to active alarm is: 0A 05 00 04 00 01 **4C B0**. Where 0A 05 00 04 00 01 is the Modbus command to read the register 00 40 where stored the DI status. The 4C B0 is the CRC-16/MODBUS which calculate manually.
1001 1001  
1002 -* (((
1003 -The command to deactivate alarm is: 0A 05 00 04 00 00 **8D 70**. Where 0A 05 00 04 00 00 is the Modbus command to read the register 00 40 where stored the DI status. The 8D 70 is the CRC-16/MODBUS which calculate manually.
1004 -)))
971 +* The command to deactivate alarm is: 0A 05 00 04 00 00 **8D 70**. Where 0A 05 00 04 00 00 is the Modbus command to read the register 00 40 where stored the DI status. The 8D 70 is the CRC-16/MODBUS which calculate manually.
1005 1005  
1006 -(((
1007 1007  So if user want to use downlink command to control to RS485 Alarm, he can use:
1008 -)))
1009 1009  
1010 -(((
1011 1011  (% style="color:#037691" %)**A8 01 06 0A 05 00 04 00 01 00**(%%): to activate the RS485 Alarm
1012 -)))
1013 1013  
1014 -(((
1015 1015  (% style="color:#037691" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
1016 -)))
1017 1017  
1018 1018  (((
1019 1019  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.
1020 1020  )))
1021 1021  
1022 -(((
1023 -
1024 -)))
1025 1025  
1026 -(((
1027 1027  **Example 2:**
1028 -)))
1029 1029  
1030 -(((
1031 1031  Check TTL Sensor return:
1032 -)))
1033 1033  
1034 -(((
1035 1035  [[image:1654132684752-193.png]]
1036 -)))
1037 1037  
1038 1038  
1039 1039