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Last modified by Mengting Qiu on 2025/07/03 18:55
From version 226.1
edited by Mengting Qiu
on 2025/03/08 11:33
Change comment: There is no comment for this version
To version 226.4
edited by Mengting Qiu
on 2025/06/13 19:42
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 +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 +
1030 1030  (% data-sider-select-id="bb6e9353-0c3f-473c-938d-4b416c9a03e6" %)
1031 -=== UDP: ===
1033 +=== **UDP Protocol:** ===
1032 1032  
1035 +Only supports valid **HEX-format downlink commands** corresponding to AT command
1033 1033  
1034 -(% data-sider-select-id="14a4790e-7faa-4508-a4dd-7605a53f1cb3" %)
1035 -Its downlink command is the same as the AT command, but brackets are required.
1036 -Example:
1037 -
1038 -{AT+TDC=300}
1039 -
1040 -
1041 1041  (% data-sider-select-id="90b80f1a-e924-4c8a-afc5-4429e019a657" %)
1042 1042  === MQTT: ===
1043 1043