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Last modified by Mengting Qiu on 2025/07/03 18:55
From version 228.4
edited by Mengting Qiu
on 2025/06/16 08:57
Change comment: There is no comment for this version
To version 226.1
edited by Mengting Qiu
on 2025/03/08 11:33
Change comment: There is no comment for this version

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1024 1024  [[image:image-20240226111928-1.png]]
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1027 -== (% data-sider-select-id="765eceff-93b1-40ee-800b-b7b7d022ef8a" %)6.5 (%%)What is the Downlink Command Format for NB Devices? ==
1027 +== (% data-sider-select-id="765eceff-93b1-40ee-800b-b7b7d022ef8a" %)6.5 What is the Downlink Command by the NB device?(%%) ==
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 -(% style="color:red" %)**Note:**
1030 +(% data-sider-select-id="bb6e9353-0c3f-473c-938d-4b416c9a03e6" %)
1031 +=== UDP: ===
1032 1032  
1033 -(% style="color:red" %)**1. Only when the correct and valid download command is used and the format is correct can the device be configured through the download command. Invalid download content cannot be processed by the device and will be automatically restarted.**
1034 1034  
1035 -(% style="color:red" %)**2. **
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:
1036 1036  
1038 +{AT+TDC=300}
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1038 -[[image:1750035004731-376.png]]
1039 1039  
1040 -
1041 -(% data-sider-select-id="bb6e9353-0c3f-473c-938d-4b416c9a03e6" %)
1042 -=== **UDP Protocol:** ===
1043 -
1044 -Only supports valid **HEX-format downlink commands** corresponding to AT command
1045 -
1046 1046  (% data-sider-select-id="90b80f1a-e924-4c8a-afc5-4429e019a657" %)
1047 1047  === MQTT: ===
1048 1048  
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