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Last modified by Mengting Qiu on 2025/07/03 18:49
From version 144.6
edited by Mengting Qiu
on 2025/07/03 18:37
Change comment: There is no comment for this version
To version 141.10
edited by Mengting Qiu
on 2025/06/16 10:14
Change comment: There is no comment for this version

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982 982  
983 983  * Does your SIM card support NB-IoT network? If SIM card doesn't not specify support NB-IoT clearly, normally it doesn't support. You need to confirm with your operator.
984 984  * Do you configure the correct APN? [[Check here for APN settings>>http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H2.1GeneralConfiguretoattachnetwork]].
985 -* Do you lock the frequency band? This is the most case we see. [[Explain and Instruction>>||anchor="H1.ConfigureFrequencyBand"]].
985 +* Do you lock the frequency band? This is the most case we see. [[Explain and Instruction>>http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H2.2SpeedUpNetworkAttachtime]].
986 986  * Check if the device is attached to Carrier network but reject. (need to check with operator).
987 987  * Check if the antenna is connected firmly.
988 988  
... ... @@ -1013,14 +1013,12 @@
1013 1013  
1014 1014  === **MQTT Protocol:** ===
1015 1015  
1016 -==== **1. HEX-format** ====
1016 +Supports both **JSON-format** and **HEX-format** downlink commands (corresponding to AT commands).
1017 1017  
1018 -Supports **HEX-format** downlink commands (corresponding to AT commands).
1019 -
1020 1020  //Example~:// For the S31-CB's uplink interval modification (AT+TDC=900):
1021 1021  
1022 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 {}.
1021 +* 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 {}.
1024 1024  
1025 1025  (% style="color:red" %)**Note:**
1026 1026  
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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 -**​​​​​​​2.1**
1037 1037  
1038 -All -CB nodes support downlink configuration modification using (% style="color:blue" %)**JSON format templates.**
1034 +Json：
1039 1039  
1040 -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.
1041 -Template.
1036 +The Json format in MQTT mode needs to be configured with all commands.
1037 +If you have configurations that need to be changed, please change them in the template below.
1038 +Template:
1042 1042  
1043 -Take the template of DDS75-CB as an example:
1044 -
1045 1045  {
1046 1046  "AT+SERVADDR":"119.91.62.30,1882",
1047 1047  "AT+CLIENT":"JwcXKjQBNhQ2JykDDAA5Ahs",
... ... @@ -1054,40 +1054,27 @@
1054 1054  "AT+APN":"NULL",
1055 1055  "AT+5VT":"0",
1056 1056  "AT+PRO":"3,5",
1057 -"AT+TR":"15",
1058 -"AT+NOUD":"8",
1052 +"AT+TR":"900",
1053 +"AT+NOUD":"0",
1059 1059  "AT+CSQTIME":"5",
1060 -"AT+GDNS":"0",
1055 +"AT+DNSTIMER":"0",
1061 1061  "AT+TLSMOD":"0,0",
1062 1062  "AT+MQOS":"0",
1063 -"AT+IPTYPE":"0",
1064 -"AT+GTDC":"0",
1065 -"AT+GNSST":"10",
1066 -"AT+GPS":"0"
1058 +"AT+TEMPALARM1":"0",
1059 +"AT+TEMPALARM2":"10",
1060 +"AT+TEMPALARM3":"0"
1067 1067  }
1068 1068  
1069 -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.
1063 +Hex：
1070 1070  
1071 -[[image:1751538862245-924.png]]
1065 +MQTT's hex format. Since many commands need to support strings, only a few commands are supported.
1072 1072  
1073 -**Instructions for Using the Template:**
1067 +The supported commands are consistent with LoRaWAN's hex commands.
1068 +Please refer to the following link to obtain the hex format:
1074 1074  
1075 -1. Modify the parameters for each AT command in the template as needed.
1076 -1. Send the entire template in one downlink command.
1070 +[[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/]]
1077 1077  
1078 -(% style="color:red" %)**Note:**
1079 1079  
1080 -* The template may vary depending on the device model.
1081 -* **Currently, each specific template is being updated and tested**. 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.
1082 -
1083 -
1084 -
1085 -
1086 -
1087 -
1088 -
1089 -
1090 -
1091 1091  == 7.4 What if the signal is good but the domain name resolution fails? ==
1092 1092  
1093 1093  
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