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Last modified by Mengting Qiu on 2025/07/17 10:51
From version 227.1
edited by Mengting Qiu
on 2025/06/13 19:43
Change comment: There is no comment for this version
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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1032 1032  (% data-sider-select-id="bb6e9353-0c3f-473c-938d-4b416c9a03e6" %)
1033 1033  === **UDP Protocol:** ===
1034 1034  
1035 -Only supports valid **HEX-format downlink commands** corresponding to AT command
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.
1039 +
1040 +[[image:1750035991532-434.png||height="237" width="495"]]
1041 +
1042 +
1037 1037  (% data-sider-select-id="90b80f1a-e924-4c8a-afc5-4429e019a657" %)
1038 -=== MQTT: ===
1044 +=== **MQTT Protocol:** ===
1039 1039  
1046 +Supports both **JSON-format** and **HEX-format** downlink commands (corresponding to AT commands).
1040 1040  
1041 -Json：
1048 +//Example~:// For the S31-NB's uplink interval modification (AT+TDC=900):
1042 1042  
1043 -The Json format in MQTT mode needs to be configured with all commands.
1044 -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 +
1045 1045  Template:
1046 1046  
1047 1047  {
... ... @@ -1067,16 +1067,24 @@
1067 1067  "AT+TEMPALARM3":"0"
1068 1068  }
1069 1069  
1070 -Hex：
1085 +**Instructions for Using the Template:**
1071 1071  
1072 -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.
1073 1073  
1074 -The supported commands are consistent with LoRaWAN's hex commands.
1075 -Please refer to the following link to obtain the hex format:
1076 1076  
1077 -[[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/]]
1078 1078  
1092 +(% style="color:red" %)**Note:**
1079 1079  
1094 +(% 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.**
1095 +
1096 +(% style="color:red" %)**2. Devices designed with downlink commands can utilize different downlink formats (e.g., JSON or HEX) for configuration. However, regardless of the format, the functionality is strictly limited to the downlink command specifications described in the user manual's AT command explanation.**
1097 +
1098 +(% style="color:red" %)**For example, the HEX-format downlink command corresponding to AT+TDC can only be used to configure TDC and cannot be used for queries. There is no HEX-format downlink command equivalent to AT+TDC=? , so querying TDC via downlink is not supported.**
1099 +
1100 +[[image:1750035004731-376.png||height="276" width="557"]]
1101 +
1102 +
1080 1080  == (% data-sider-select-id="765eceff-93b1-40ee-800b-b7b7d022ef8a" %)6.6 How to get the debug log for further analyze?(%%) ==
1081 1081  
1082 1082  
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