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Last modified by Mengting Qiu on 2025/07/03 18:49
From version 144.3
edited by Mengting Qiu
on 2025/07/03 18:37
Change comment: There is no comment for this version
To version 143.4
edited by Mengting Qiu
on 2025/07/03 18:27
Change comment: There is no comment for this version

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1031 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 1032  
1033 1033  
1034 -==== **2. JSON-format ** ====
1035 1035  
1036 -All -CB nodes support downlink configuration modification using JSON format templates.
1035 +==== 2. **JSON-format** ====
1037 1037  
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 -Template.
1037 +**Template for Batch Configuration:**
1040 1040  
1041 -Take the template of DDS75-CB as an example:
1039 +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.
1040 +Template:
1042 1042  
1043 1043  {
1044 1044  "AT+SERVADDR":"119.91.62.30,1882",
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1052 1052  "AT+APN":"NULL",
1053 1053  "AT+5VT":"0",
1054 1054  "AT+PRO":"3,5",
1055 -"AT+TR":"15",
1056 -"AT+NOUD":"8",
1054 +"AT+TR":"900",
1055 +"AT+NOUD":"0",
1057 1057  "AT+CSQTIME":"5",
1058 -"AT+GDNS":"0",
1057 +"AT+DNSTIMER":"0",
1059 1059  "AT+TLSMOD":"0,0",
1060 1060  "AT+MQOS":"0",
1061 -"AT+IPTYPE":"0",
1062 -"AT+GTDC":"0",
1063 -"AT+GNSST":"10",
1064 -"AT+GPS":"0"
1060 +"AT+TEMPALARM1":"0",
1061 +"AT+TEMPALARM2":"10",
1062 +"AT+TEMPALARM3":"0"
1065 1065  }
1066 1066  
1067 -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 -
1069 -[[image:1751538862245-924.png]]
1070 -
1071 1071  **Instructions for Using the Template:**
1072 1072  
1073 1073  1. Modify the parameters for each AT command in the template as needed.
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1088 -
1089 1089  == 7.4 What if the signal is good but the domain name resolution fails? ==
1090 1090  
1091 1091  
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