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Last modified by Mengting Qiu on 2025/07/03 18:55
From version 139.1
edited by Edwin Chen
on 2024/02/08 10:36
Change comment: There is no comment for this version
To version 145.1
edited by Edwin Chen
on 2024/02/29 23:34
Change comment: There is no comment for this version

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94 94  
95 95  * (% style="color:#037691" %)**AT+SERVADDR=120.24.4.116,5601**  (%%) ~/~/  Set UDP server address and port
96 96  
97 -* (% style="color:#037691" %)**AT+CFM=1**    (%%) ~/~/  If the server does not respond, this command is unnecessary
98 -
99 99  [[image:image-20230802112413-2.png]]
100 100  
101 101  
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645 645  1*. **AT+TDC=7200**  ~/~/ Uplink every 2 hours.
646 646  1*. this will mean each uplink will actually include the 6 uplink data (24 set data which cover 12 hours). So if device doesn;t lost 6 continue data. There will not data lost.
647 647  
646 +
647 +== 4.2 Why the uplink JSON format is not standard? ==
648 +
649 +The json format in uplink packet is not standard Json format. Below is the example. This is to make the payload as short as possible, due to NB-IoT transmit limition, a standard Json is not able to include 32 sets of sensors data with timestamp.
650 +
651 +[[image:image-20240229233154-1.png]]
652 +
653 +
654 +
648 648  = 5. Trouble Shooting: =
649 649  
650 650  == 5.1 Checklist for debuging Network Connection issue. Signal Strenght:99 issue. ==
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710 710  [29842lRestart the module...
711 711  )))
712 712  
713 -Make sure that the SIM card is insert in correct direction and device is power off/on during insert. Here is reference link: [[Insert SIM Card>>||anchor="H2.1GeneralConfiguretoattachnetwork"]]
720 +Make sure that the SIM card is insert in correct direction and device is power off/on during insert. Here is reference link: [[Insert SIM Card>>||anchor="H2.1GeneralConfiguretoattachnetwork"]].
721 +
722 +
723 +== 5.4 Why sometime the AT Command is slow in reponse? ==
724 +
725 +When the MCU is communicating with the NB-IoT module, the MCU response of AT Command will become slower, it might takes several seconds to response.
726 +
727 +[[image:image-20240226111928-1.png]]
728 +
729 +
730 +
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