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Last modified by Mengting Qiu on 2025/07/17 10:51
From version 229.1
edited by Mengting Qiu
on 2025/06/16 09:06
Change comment: Uploaded new attachment "1750035991532-434.png", version {1}
To version 229.16
edited by Mengting Qiu
on 2025/06/16 09:25
Change comment: There is no comment for this version

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1034 1034  
1035 1035  Only supports valid **HEX-format downlink commands** corresponding to AT command.
1036 1036  
1037 +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:
1038 +Downward format: (% style="color:blue" %)**01000384**(%%)  ~/~/ There are no Spaces. 0x0384(H)=900(D), that is, modify TDC to 900 seconds.
1037 1037  
1040 +[[image:1750035991532-434.png||height="237" width="495"]]
1038 1038  
1042 +
1039 1039  (% data-sider-select-id="90b80f1a-e924-4c8a-afc5-4429e019a657" %)
1040 -=== MQTT: ===
1044 +=== **MQTT Protocol:** ===
1041 1041  
1046 +Supports both **JSON-format** and **HEX-format** downlink commands (corresponding to AT commands).
1042 1042  
1043 -Json：
1048 +//Example~:// For the S31-NB's uplink interval modification (AT+TDC=900):
1044 1044  
1045 -The Json format in MQTT mode needs to be configured with all commands.
1046 -If you have configurations that need to be changed, please change them in the template below.
1050 +* HEX format: (% style="color:blue" %)**01000384**(%%)  ~/~/ There are no Spaces. 0x0384(H)=900(D), that is, modify TDC to 900 seconds.
1051 +* JSON format: (% style="color:blue" %)**{AT+TDC=900}  **(%%)~/~/ The correct format is (% style="color:blue" %)**{AT Command}**(%%). No extra characters other than valid AT commands can be added within {}.
1052 +
1053 +
1054 +
1055 +**Template for Batch Configuration:**
1056 +
1057 +We can also use templates to configure multiple commands AT once. Users only need to modify the parameters of the required AT commands in the correct template for each device.
1058 +
1059 +
1047 1047  Template:
1048 1048  
1049 1049  {
... ... @@ -1069,16 +1069,13 @@
1069 1069  "AT+TEMPALARM3":"0"
1070 1070  }
1071 1071  
1072 -Hex：
1085 +**Instructions for Using the Template:**
1073 1073  
1074 -MQTT's hex format. Since many commands need to support strings, only a few commands are supported.
1087 +1. Modify the parameters for each AT command in the template as needed.
1088 +1. Send the entire template in one downlink command.
1075 1075  
1076 -The supported commands are consistent with LoRaWAN's hex commands.
1077 -Please refer to the following link to obtain the hex format:
1078 1078  
1079 -[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/]]
1080 1080  
1081 -
1082 1082  (% style="color:red" %)**Note:**
1083 1083  
1084 1084  (% 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.**