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Last modified by Mengting Qiu on 2025/06/18 15:53
From version 141.2
edited by Mengting Qiu
on 2025/06/16 10:11
Change comment: There is no comment for this version
To version 140.1
edited by Mengting Qiu
on 2025/03/08 11:35
Change comment: There is no comment for this version

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997 997  [[image:image-20240820113015-60.png]]
998 998  
999 999  
1000 -== (% data-sider-select-id="765eceff-93b1-40ee-800b-b7b7d022ef8a" %)7.3 (%%)What is the Downlink Command Format for CB Devices? ==
1000 +== (% data-sider-select-id="765eceff-93b1-40ee-800b-b7b7d022ef8a" %)7.3 What is the Downlink Command by the -CB device?(%%) ==
1001 1001  
1002 +(% data-sider-select-id="bb6e9353-0c3f-473c-938d-4b416c9a03e6" %)
1003 +=== UDP: ===
1002 1002  
1003 -Firstly, it is recommended that users upgrade the firmware of the -CB node to the latest version, as the processing method for downlink commands varies depending on the firmware version. Below, we will introduce the latest downlink command format.
1005 +(% data-sider-select-id="14a4790e-7faa-4508-a4dd-7605a53f1cb3" %)
1006 +Its downlink command is the same as the AT command, but brackets are required.
1007 +Example:
1004 1004  
1005 -=== **UDP Protocol:** ===
1009 +{AT+TDC=300}
1006 1006  
1007 -Only supports valid **HEX-format downlink commands** corresponding to AT command.
1008 1008  
1009 -Take the AT+TDC command of S31-NB as an example, that is, only the valid HEX format downstream command corresponding to the AT+TDC command can be used:
1010 -Downward format: (% style="color:blue" %)**01000384**(%%)  ~/~/ There are no Spaces. 0x0384(H)=900(D), that is, modify TDC to 900 seconds.
1011 -
1012 -[[image:1750039871468-460.png||height="299" width="600"]]
1013 -
1014 1014  (% data-sider-select-id="90b80f1a-e924-4c8a-afc5-4429e019a657" %)
1015 1015  === MQTT: ===
1016 1016  
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