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Last modified by Mengting Qiu on 2025/07/17 10:51
From version 229.19
edited by Mengting Qiu
on 2025/06/16 09:28
Change comment: There is no comment for this version
To version 228.6
edited by Mengting Qiu
on 2025/06/16 09:02
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 -
1032 -(% data-sider-select-id="bb6e9353-0c3f-473c-938d-4b416c9a03e6" %)
1033 -=== **UDP Protocol:** ===
1034 -
1035 -Only supports valid **HEX-format downlink commands** corresponding to AT command.
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 -(% data-sider-select-id="90b80f1a-e924-4c8a-afc5-4429e019a657" %)
1044 -=== **MQTT Protocol:** ===
1045 -
1046 -Supports both **JSON-format** and **HEX-format** downlink commands (corresponding to AT commands).
1047 -
1048 -//Example~:// For the S31-NB's uplink interval modification (AT+TDC=900):
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 1053  (% style="color:red" %)**Note:**
1054 1054  
1055 1055  (% 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.**
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1058 1058  
1059 1059  (% 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.**
1060 1060  
1061 -[[image:1750035004731-376.png||height="276" width="557"]]
1039 +[[image:1750035004731-376.png||height="346" width="698"]]
1062 1062  
1063 1063  
1064 -**Template for Batch Configuration:**
1042 +(% data-sider-select-id="bb6e9353-0c3f-473c-938d-4b416c9a03e6" %)
1043 +=== **UDP Protocol:** ===
1065 1065  
1066 -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.
1045 +Only supports valid **HEX-format downlink commands** corresponding to AT command
1046 +
1047 +(% data-sider-select-id="90b80f1a-e924-4c8a-afc5-4429e019a657" %)
1048 +=== MQTT: ===
1049 +
1050 +
1051 +Json：
1052 +
1053 +The Json format in MQTT mode needs to be configured with all commands.
1054 +If you have configurations that need to be changed, please change them in the template below.
1067 1067  Template:
1068 1068  
1069 1069  {
... ... @@ -1089,22 +1089,16 @@
1089 1089  "AT+TEMPALARM3":"0"
1090 1090  }
1091 1091  
1092 -**Instructions for Using the Template:**
1080 +Hex：
1093 1093  
1094 -1. Modify the parameters for each AT command in the template as needed.
1095 -1. Send the entire template in one downlink command.
1082 +MQTT's hex format. Since many commands need to support strings, only a few commands are supported.
1096 1096  
1097 -(% style="color:red" %)**Note:**
1084 +The supported commands are consistent with LoRaWAN's hex commands.
1085 +Please refer to the following link to obtain the hex format:
1098 1098  
1099 -**Note:**
1087 +[[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/]]
1100 1100  
1101 -* The template may vary depending on the device model.
1102 -* Currently, each specific template is being updated and tested.
1103 -* If you need a template for your specific device, please contact **Dragino Technical Support** at [[support@dragino.com>>url:https://mailto:support@dragino.com/]] to request the latest downlink template.
1104 1104  
1105 -
1106 -
1107 -
1108 1108  == (% data-sider-select-id="765eceff-93b1-40ee-800b-b7b7d022ef8a" %)6.6 How to get the debug log for further analyze?(%%) ==
1109 1109  
1110 1110  
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