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Last modified by Mengting Qiu on 2025/07/17 10:51
From version 229.15
edited by Mengting Qiu
on 2025/06/16 09:25
Change comment: There is no comment for this version
To version 227.2
edited by Mengting Qiu
on 2025/06/16 08:48
Change comment: There is no comment for this version

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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 +(% style="color:red" %)**Note: **
1031 1031  
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.
1036 +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 -
1043 1043  (% data-sider-select-id="90b80f1a-e924-4c8a-afc5-4429e019a657" %)
1044 -=== **MQTT Protocol:** ===
1039 +=== MQTT: ===
1045 1045  
1046 -Supports both **JSON-format** and **HEX-format** downlink commands (corresponding to AT commands).
1047 1047  
1048 -//Example~:// For the S31-NB's uplink interval modification (AT+TDC=900):
1042 +Json：
1049 1049  
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 -
1044 +The Json format in MQTT mode needs to be configured with all commands.
1045 +If you have configurations that need to be changed, please change them in the template below.
1060 1060  Template:
1061 1061  
1062 1062  {
... ... @@ -1082,21 +1082,16 @@
1082 1082  "AT+TEMPALARM3":"0"
1083 1083  }
1084 1084  
1071 +Hex：
1085 1085  
1086 -[[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/]]
1073 +MQTT's hex format. Since many commands need to support strings, only a few commands are supported.
1087 1087  
1075 +The supported commands are consistent with LoRaWAN's hex commands.
1076 +Please refer to the following link to obtain the hex format:
1088 1088  
1089 -(% style="color:red" %)**Note:**
1078 +[[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/]]
1090 1090  
1091 -(% 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.**
1092 1092  
1093 -(% 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.**
1094 -
1095 -(% 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.**
1096 -
1097 -[[image:1750035004731-376.png||height="276" width="557"]]
1098 -
1099 -
1100 1100  == (% data-sider-select-id="765eceff-93b1-40ee-800b-b7b7d022ef8a" %)6.6 How to get the debug log for further analyze?(%%) ==
1101 1101  
1102 1102  
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