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Last modified by Mengting Qiu on 2025/07/03 18:55
From version 226.2
edited by Mengting Qiu
on 2025/06/13 17:10
Change comment: There is no comment for this version
To version 226.3
edited by Mengting Qiu
on 2025/06/13 19:41
Change comment: There is no comment for this version

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1024 1024  [[image:image-20240226111928-1.png]]
1025 1025  
1026 1026  
1027 -== (% data-sider-select-id="765eceff-93b1-40ee-800b-b7b7d022ef8a" %)6.5 What is the Downlink Command by the NB device?(%%) ==
1027 +== (% data-sider-select-id="765eceff-93b1-40ee-800b-b7b7d022ef8a" %)6.5 (%%)What is the Downlink Command Format for NB Devices? ==
1028 1028  
1029 1029  
1030 1030  Firstly, it is recommended that users upgrade the firmware of the -NB 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.
1031 1031  
1032 1032  (% data-sider-select-id="bb6e9353-0c3f-473c-938d-4b416c9a03e6" %)
1033 -=== UDP: ===
1033 +=== **UDP Protocol:** ===
1034 1034  
1035 +Only supports valid **HEX-format downlink commands** corresponding to AT command
1035 1035  
1036 -(% data-sider-select-id="14a4790e-7faa-4508-a4dd-7605a53f1cb3" %)
1037 -Its downlink command is the same as the AT command, but brackets are required.
1038 -Example:
1037 +Example: For the S31-NB’s uplink interval modification command (AT+TDC), the downlink command should be:
1039 1039  
1040 -{AT+TDC=300}
1041 1041  
1042 1042  
1043 1043  (% data-sider-select-id="90b80f1a-e924-4c8a-afc5-4429e019a657" %)