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Last modified by Mengting Qiu on 2025/07/03 18:49
From version 144.2
edited by Mengting Qiu
on 2025/07/03 18:35
Change comment: There is no comment for this version
To version 144.13
edited by Mengting Qiu
on 2025/07/03 18:43
Change comment: There is no comment for this version

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1019 1019  
1020 1020  //Example~:// For the S31-CB's uplink interval modification (AT+TDC=900):
1021 1021  
1022 -* HEX format: (% style="color:blue" %)**01000384**(%%)  ~/~/ There are no Spaces. 0x0384(H)=900(D), that is, modify TDC to 900 seconds.
1023 -* 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 {}.
1022 +Downlink command: (% style="color:blue" %)**01000384**(%%)  ~/~/ There are no Spaces. 0x0384(H)=900(D), that is, modify TDC to 900 seconds.
1024 1024  
1025 -(% style="color:red" %)**Note:**
1026 1026  
1027 -(% 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.**
1028 -
1029 -(% 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.**
1030 -
1031 -(% 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.**
1032 -
1033 -
1034 1034  ==== **2. JSON-format ** ====
1035 1035  
1036 -All -CB nodes support downlink configuration modification using JSON format templates.
1027 +===== **2. 1 JSON format template.** =====
1037 1037  
1029 +All -CB nodes support downlink configuration modification using (% style="color:blue" %)**JSON format templates.**
1030 +
1038 1038  We can 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.
1039 1039  Template.
1040 1040  
... ... @@ -1064,7 +1064,7 @@
1064 1064  "AT+GPS":"0"
1065 1065  }
1066 1066  
1067 -AT+TR (set the detection interval: 0 ~~ 255 minutes) and AT+NOUD (set the number of groups) correspond to parameters in AT+CLOCKLOG.
1060 +Explanations of two special commands in the template: AT+TR (set the detection interval: 0 ~~ 255 minutes) and AT+NOUD (set the number of groups) correspond to parameters in AT+CLOCKLOG.
1068 1068  
1069 1069  [[image:1751538862245-924.png]]
1070 1070  
... ... @@ -1080,6 +1080,16 @@
1080 1080  
1081 1081  
1082 1082  
1076 +===== **2.2 Support sending json format commands separately** =====
1077 +
1078 +Some models of nodes support sending json format commands separately：(% style="color:blue" %)**RS485-CB, LDS25-CB, CS01-CB, SDI-12-CB, SW3L-CB, WL03A-CB, PS-CB**
1079 +
1080 +//Example~:// For the PS-CB's uplink interval modification (AT+TDC=900):
1081 +
1082 +Downlink command:  (% 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 {}.
1083 +
1084 +
1085 +
1083 1083  == 7.4 What if the signal is good but the domain name resolution fails? ==
1084 1084  
1085 1085