Last modified by Mengting Qiu on 2025/03/08 11:33
<
From version < 167.1 >
edited by Bei Jinggeng
on 2024/07/01 11:47
To version < 105.2 >
edited by Xiaoling
on 2023/11/06 16:16
>
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Author
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1 -XWiki.Bei
1 +XWiki.Xiaoling
Content
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22 22  To attache NB-IoT sensors to NB-IoT Network, You need to:
23 23  
24 24  1. Get a NB-IoT SIM card from Service Provider. (Not the same as the SIM card we use in mobile phone)
25 -1. Power Off End Node ( See below for the power off/on position)
26 -1. Insert the SIM card to Sensor. ( See below for direction)
27 -1. Power On End Node
28 -1. [[Configure APN>>http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20configure%20APN%20in%20the%20node/]] in the sensor (AT+APN=<APN>), example AT+APN=iot.1nce.net
25 +1. Insert the SIM card to Sensor
26 +1. [[Configure APN>>http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20configure%20APN%20in%20the%20node/]] in the sensor (AT+APN=<APN>)
29 29  
30 -[[image:image-20240208102804-1.png||height="286" width="696"]]
31 -
32 32  [[image:image-20230808205045-1.png||height="293" width="438"]]
33 33  
34 34  After doing above, the NB-IoT Sensors should be able to attach to NB-IoT network .
... ... @@ -40,29 +40,24 @@
40 40  |(% style="width:117px" %)**[[1NCE>>https://1nce.com]]**|(% style="width:151px" %)iot.1nce.net|(% style="width:474px" %)(((
41 41  **[[Coverage Reference Link>>https://1nce.com/en-ap/1nce-connect]]**
42 42  
43 -Austria, Belgium, Bulgaria, Croatia, Czech Republic, Denmark, Finland, Germany, Great Britain, Greece, Hungary, Ireland, Italy, Latvia, Malta, Netherlands, Norway, Puerto Rico, Russia, Slovak , Republic, Slovenia, Spain, Sweden, Switzerland, Taiwan, USA, UK, US Virgin Islands
44 -)))|(% style="width:135px" %)UK: Band20
39 +Austria, Belgium, Bulgaria, Croatia, Czech Republic, Denmark, Finland, Germany, Great Britain, Greece, Hungary, Ireland, Italy, Latvia, Malta, Netherlands, Norway, Puerto Rico, Russia, Slovak , Republic, Slovenia, Spain, Sweden, Switzerland, Taiwan, USA, US Virgin Islands
40 +)))|(% style="width:135px" %)
45 45  |(% style="width:117px" %)China Mobile|(% style="width:151px" %)No need configure|(% style="width:474px" %)China Mainland, HongKong|(% style="width:135px" %)
46 46  |(% style="width:117px" %)China Telecom|(% style="width:151px" %)ctnb|(% style="width:474px" %)China Mainland|(% style="width:135px" %)
47 47  
44 +
45 +
48 48  == 2.2 Speed Up Network Attach time ==
49 49  
50 50  
51 -BC660K-GL supports multi bands (% style="color:blue" %)**B1/B2/B3/B4/B5/B8/B12/B13/B14/B17/B18/B19/B20/B25/B28/B66/B70/B85. **(%%) It will search one by one and try to attach, this will take a lot of time and even cause attach fail and show **Signal Strenght:99**. User can lock the band to specify band for its operator to make this faster.
49 +BC660K-GL supports multi bands (% style="color:blue" %)**B1/B2/B3/B4/B5/B8/B12/B13/B14/B17/B18/B19/B20/B25/B28/B66/B70/B85. **(%%) It will search one by one and try to attach, this will take a lot of time and even cause attach fail. User can lock the band to specify band for its operator to make this faster.
52 52  
53 -(% style="color:#037691" %)**AT+QBAND?       **(%%) ~/~/ Check what is the current used frequency band
54 -(% style="color:#037691" %)**AT+QBAND=1,4    **(%%) ~/~/ Set to use 1 frequency band. Band4
55 -(% style="color:#037691" %)**Europe General**(%%) **AT+QBAND=2,8,20 ** ~/~/ Set to use 2 frequency bands. Band 8 and Band 20
56 -(% style="color:#037691" %)**Global General**(%%) : **AT+QBAND=10,8,20,28,2,4,12,13,66,85,5**
51 +(% style="color:#037691" %)**AT+QBAND?       ** (%%) ~/~/ Check what is the current used frequency band
57 57  
58 -(% style="color:#037691" %)**Verizon**(%%)** ** AT+QBAND=1,13
59 -(% style="color:#037691" %)**AT&T**(%%)           AT+QBAND=3,12,4,2
60 -(% style="color:#037691" %)**Telstra**(%%)        AT+QBAND=1,28
61 -(% style="color:#037691" %)**Softband**(%%)     AT+QBAND=2,3,8
53 +(% style="color:#037691" %)**AT+QBAND=1,4    ** (%%) ~/~/ Set to use 1 frequency band. Band4
62 62  
63 -After connection is successful, user can use (% style="color:#037691" %)**AT+QENG=0 **(%%) to check which band is actually in used.
55 +(% style="color:#037691" %)**AT+QBAND=2,8,20**  (%%) ~/~/ Set to use 2 frequency bands. Band 8 and Band 20
64 64  
65 -By default, device will search network for 5 minutes. User can set the time to 10 minutes by (% style="color:#037691" %)**AT+CSQTIME=10 **(%%)so it can search longer.
66 66  
67 67  See bands used for different provider:** [[NB-IoT Deployment , Bands, Operator list>>http://wiki.dragino.com/xwiki/bin/view/Main/NB-IoT%20Deployment%20%2C%20Bands%2C%20Operator%20list/]]**
68 68  
... ... @@ -94,6 +94,8 @@
94 94  
95 95  * (% style="color:#037691" %)**AT+SERVADDR=120.24.4.116,5601**  (%%) ~/~/  Set UDP server address and port
96 96  
88 +* (% style="color:#037691" %)**AT+CFM=1**    (%%) ~/~/  If the server does not respond, this command is unnecessary
89 +
97 97  [[image:image-20230802112413-2.png]]
98 98  
99 99  
... ... @@ -164,6 +164,8 @@
164 164  
165 165  * (% style="color:#037691" %)**Password:**(%%) <Your ThingSpeak MQTT Password>
166 166  
160 +
161 +
167 167  ==== 3.3.2.2 Publish Data to ThingSpeak Channel ====
168 168  
169 169  
... ... @@ -205,6 +205,8 @@
205 205  
206 206  * (% style="color:blue" %)**AT+SUBTOPIC=<YOUR_CHANNEL_ID>**
207 207  
203 +
204 +
208 208  ==== 3.3.3.2 Uplink Examples ====
209 209  
210 210  
... ... @@ -266,6 +266,8 @@
266 266  |(% colspan="1" style="background-color:#4f81bd; color:white; width:143px" %)SN50V3-NB mod5|(% colspan="1" style="width:103px" %)mod|(% colspan="1" style="width:102px" %)Battery|(% colspan="1" style="width:157px" %)RSSI|(% colspan="1" style="width:154px" %)DS18B20 Temp|(% colspan="1" style="width:153px" %)adc0|(% colspan="1" style="width:151px" %)exit_state/input PA4|(% colspan="1" style="width:160px" %)Weight|(% colspan="1" style="width:152px" %) |(% colspan="1" style="width:67px" %) |(% colspan="1" style="width:69px" %)
267 267  |(% colspan="1" style="background-color:#4f81bd; color:white; width:143px" %)SN50V3-NB mod6|(% colspan="1" style="width:103px" %)mod|(% colspan="1" style="width:102px" %)Battery|(% colspan="1" style="width:157px" %)RSSI|(% colspan="1" style="width:154px" %)count|(% colspan="1" style="width:153px" %) |(% colspan="1" style="width:151px" %) |(% colspan="1" style="width:160px" %) |(% colspan="1" style="width:152px" %) |(% colspan="1" style="width:67px" %) |(% colspan="1" style="width:69px" %)
268 268  
266 +
267 +
269 269  == 3.4 [[Datacake>>https://datacake.co/]] ==
270 270  
271 271  
... ... @@ -280,10 +280,11 @@
280 280  
281 281  * (% style="color:blue" %)**S31B-NB-GE**(%%): This verson doesn't have pre-configure Datacake connection. User need to enter the AT Commands to connect to Datacake. See below for instruction.
282 282  
283 -=== 3.4.1 For device Already has template ===
284 284  
285 -==== 3.4.1.1 Create Device ====
286 286  
284 +=== 3.4.1 Create device ===
285 +
286 +
287 287  (% style="color:blue" %)**Add Device**(%%) in DataCake.
288 288  
289 289  [[image:image-20230808162301-1.png||height="453" width="952"]]
... ... @@ -306,11 +306,9 @@
306 306  [[image:image-20230808163049-6.png||height="544" width="926"]]
307 307  
308 308  
309 -=== 3.4.2 For Device already registered in DataCake before shipped ===
309 +=== 3.4.2 Scan QR code to obtain data ===
310 310  
311 -==== 3.4.2.1 Scan QR Code to get the device info ====
312 312  
313 -
314 314  Users can use their phones or computers to scan QR codes to obtain device data information.
315 315  
316 316  [[image:image-20230808170051-8.png||height="255" width="259"]]
... ... @@ -318,69 +318,9 @@
318 318  [[image:image-20230808170548-9.png]]
319 319  
320 320  
321 -==== 3.4.2.2 Claim Device to User Account ====
319 +=== 3.4.2 AT command for connecting to DataCake ===
322 322  
323 323  
324 -By Default, the device is registered in Dragino's DataCake Account. User can Claim it to his account.
325 -
326 -
327 -=== 3.4.3 Manual Add Decoder in DataCake ( don't use the template in DataCake) ===
328 -
329 -
330 -**Step1: Add a device**
331 -
332 -[[image:image-20240129170024-1.png||height="330" width="900"]]
333 -
334 -
335 -**Step2: Choose your device type,please select dragino NB-IOT device**
336 -
337 -[[image:image-20240129170216-2.png||height="534" width="643"]]
338 -
339 -
340 -**Step3: Choose to create a new device**
341 -
342 -[[image:image-20240129170539-3.png||height="459" width="646"]]
343 -
344 -
345 -**Step4: Fill in the device ID of your NB device**
346 -
347 -[[image:image-20240202111546-1.png||height="378" width="651"]]
348 -
349 -
350 -**Step5: Please select your device plan according to your needs and complete the creation of the device**
351 -
352 -[[image:image-20240129171236-6.png||height="450" width="648"]]
353 -
354 -
355 -**Step6: Please add the decoder at the payload decoder of the device configuration.**
356 -
357 -**Decoder location:**[[dragino-end-node-decoder/Datacake-Dragino_NB at main · dragino/dragino-end-node-decoder (github.com)>>url:https://github.com/dragino/dragino-end-node-decoder/tree/main/Datacake-Dragino_NB]]
358 -
359 -[[image:image-20240129172056-7.png||height="457" width="816"]]
360 -
361 -[[image:image-20240129173116-9.png||height="499" width="814"]]
362 -
363 -
364 -**Step7: Add the output of the decoder as a field**
365 -
366 -[[image:image-20240129173541-10.png||height="592" width="968"]]
367 -
368 -
369 -**Step8: Customize the dashboard and use fields as parameters of the dashboard**
370 -
371 -[[image:image-20240129174518-11.png||height="147" width="1042"]]
372 -
373 -[[image:image-20240129174657-12.png||height="538" width="916"]]
374 -
375 -[[image:image-20240129174840-13.png||height="536" width="750"]]
376 -
377 -
378 -=== 3.4.4 For device have not configured to connect to DataCake ===
379 -
380 -
381 -(% class="lead" %)
382 -Use AT command for connecting to DataCake
383 -
384 384  (% style="color:blue" %)**AT+PRO=2,0**
385 385  
386 386  (% style="color:blue" %)**AT+SERVADDR=67.207.76.90,4445**
... ... @@ -439,13 +439,12 @@
439 439  === 3.5.3 Configure NB-IoT Sensors ===
440 440  
441 441  
442 -* (% style="color:#037691" %)**AT+PRO=3,0 or 3,5 ** (%%) **~/~/ hex format or json format**
443 -* (% style="color:#037691" %)**AT+SUBTOPIC=<device name>or User Defined**
444 -* (% style="color:#037691" %)**AT+PUBTOPIC=<device name>or User Defined**
445 -* (% style="color:#037691" %)**AT+CLIENT=<device name> or User Defined**
446 -* (% style="color:#037691" %)**AT+UNAME=<device name> or User Defined**
447 -* (% style="color:#037691" %)**AT+PWD=“Your device token”**
380 +* (% style="color:blue" %)**AT+PRO=2,0(hex format) or 2,1(json format)  **(%%)** **~/~/  Set to UDP Server and  Payload
448 448  
382 +* (% style="color:blue" %)**AT+SERVADDR=xx.xx.xx.xx,port   **(%%)** **~/~/  Set Server IP and  port
383 +
384 +
385 +
449 449  == 3.6 ThingsBoard.Cloud (via MQTT) ==
450 450  
451 451  === 3.6.1 Configure ThingsBoard ===
... ... @@ -496,7 +496,7 @@
496 496  
497 497  (% style="color:blue" %)**Add a topic filter:**
498 498  
499 -Consistent with the theme of the node setting.
436 +tb/mqtt-integration-tutorial/sensors~/~/temperature ~-~-> Temperature  **固定的? 对的。**
500 500  
501 501  You can also select an MQTT QoS level. We use MQTT QoS level 0 (At most once) by default;
502 502  
... ... @@ -590,6 +590,8 @@
590 590  
591 591  * (% style="color:#037691" %)**AT+PWD=“Your device token”**
592 592  
530 +
531 +
593 593  === 3.7.2 Simulate with MQTT.fx ===
594 594  
595 595  
... ... @@ -625,6 +625,8 @@
625 625  
626 626  * (% style="color:#037691" %)**AT+SERVADDR=120.24.4.116,5600 ** (%%) ~/~/ to set TCP server address and port
627 627  
567 +
568 +
628 628  (% style="color:blue" %)**Sensor Console Output when Uplink:**
629 629  
630 630  [[image:image-20230807233631-1.png]]
... ... @@ -634,234 +634,3 @@
634 634  
635 635  [[image:image-20230807233631-2.png]]
636 636  
637 -
638 -== 3.9 AWS Connection ==
639 -
640 -
641 -Users can refer to [[Dragino NB device connection to AWS platform instructions>>http://wiki.dragino.com/xwiki/bin/view/Dragino%20NB%20device%20connection%20to%20AWS%20platform%20instructions/#H1.LogintotheplatformandfindIoTcore]]
642 -
643 -
644 -
645 -
646 -= 4. MQTT/UDP/TCP downlink =
647 -
648 -== 4.1 MQTT (via MQTT.fx) ==
649 -
650 -Configure MQTT connections properly and send downlink commands to configure nodes through the Publish function of MQTT.fx//.//
651 -
652 -**1.** Configure node MQTT connection (via MQTT.fx):
653 -
654 -(% style="color:blue" %)**AT command:**
655 -
656 -* (% style="color:#037691" %)**AT+PRO=3,0 or 3,5 ** (%%)~/~/ hex format or json format
657 -
658 -* (% style="color:#037691" %)**AT+SUBTOPIC=User Defined**
659 -
660 -* (% style="color:#037691" %)**AT+PUBTOPIC=User Defined**
661 -
662 -* (% style="color:#037691" %)**AT+UNAME=<device name> or User Defined**
663 -
664 -* (% style="color:#037691" %)**AT+PWD=<device name> or User Defined**
665 -
666 -* (% style="color:#037691" %)**AT+SERVADDR=8.217.91.207,1883 ** (%%) ~/~/ to set MQTT server address and port
667 -
668 -(% style="color:red" %)**Note: To uplink and downlink via MQTT.fx, we need set the publish topic and subscribe topic different, for example: AT+SUBTOPIC=SE01_SUB & AT+PUBTOPIC=SE01_PUB.**
669 -
670 -[[image:image-20240417180145-2.png||height="434" width="587"]][[image:image-20240417180737-3.png||height="431" width="584"]]
671 -
672 -
673 -**2. **When the node uplink packets, we can observe the data in MQTT.fx.
674 -
675 -[[image:image-20240418144337-1.png||height="709" width="802"]]
676 -
677 -**3. **The downlink command can be successfully sent only when the downlink port is open.
678 -
679 - The downlink port is opened for about 3 seconds after uplink packets are sent.
680 -
681 - Therefore, when we see the node uplink packets in the **Subscribe** window, we need to immediately switch to the **publish** window to publish the **hex format** command.
682 -
683 -[[image:image-20240418150435-3.png||height="582" width="659"]]
684 -
685 -[[image:image-20240418150932-4.png||height="492" width="1061"]]
686 -
687 -(% style="color:red" %)**Note: Users can edit the hex command in advance. When the node uplink, directly click the publish button several times to increase the success rate of command configuration.**
688 -
689 -
690 -
691 -
692 -
693 -
694 -
695 -= 5. FAQ =
696 -
697 -== 5.1 What is the usage of Multi Sampling and One Uplink? ==
698 -
699 -
700 -The NB series has the feature for Multi Sampling and one uplink. See one of them
701 -
702 -[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/SN50v3-NB_BN-IoT_Sensor_Node_User_Manual/#H2.5Multi-SamplingsandOneuplink>>http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/SN50v3-NB_BN-IoT_Sensor_Node_User_Manual/#H2.5Multi-SamplingsandOneuplink]]
703 -
704 -User can use this feature for below purpose:
705 -
706 -1. **Reduce power consumption**. The NB-IoT transmit power is much more higher than the sensor sampling power. To save battery life, we can sampling often and send in one uplink.
707 -1. Give more sampling data points.
708 -1. Increase reliable in transmission. For example. If user set
709 -1*. **AT+TR=1800** ~/~/ The unit is seconds, and the default is to record data once every 1800 seconds (30 minutes, the minimum can be set to 180 seconds)
710 -1*. **AT+NOUD=24** ~/~/  The device uploads 24 sets of recorded data by default. Up to 32 sets of record data can be uploaded.
711 -1*. **AT+TDC=7200**  ~/~/ Uplink every 2 hours.
712 -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.
713 -
714 -== 5.2 Why the uplink JSON format is not standard? ==
715 -
716 -
717 -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.
718 -
719 -The firmware version released after 2024, Mar will use change back to use Json format. Detail please check changelog.
720 -
721 -[[image:image-20240229233154-1.png]]
722 -
723 -
724 -= 6. Trouble Shooting: =
725 -
726 -== 6.1 Checklist for debuging Network Connection issue. Signal Strenght:99 issue. ==
727 -
728 -
729 -There are many different providers provide NB-IoT service in the world. They might use different band, different APN & different operator configuration. Which makes connection to NB-IoT network is complicate.
730 -
731 -If end device successfully attached NB-IoT Network, User can normally see the signal strengh as below (between 0~~31)
732 -
733 -[[image:image-20240207002003-1.png]]
734 -
735 -
736 -If fail to attach network, it will shows signal 99. as below:
737 -
738 -[[image:image-20240207002129-2.png]]
739 -
740 -
741 -(% class="lead" %)
742 -When see this issue, below are the checklist:
743 -
744 -* 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.
745 -* 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]].
746 -* 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]].
747 -* Check if the device is attached to Carrier network but reject. (need to check with operator).
748 -* Check if the antenna is connected firmly.
749 -
750 -If you have check all above and still fail. please send console log files (as many as possible) to [[support@dragino.com>>mailto:support@dragino.com]] so we can check.
751 -
752 -
753 -== 6.2 Issue: "NBIOT did not respond" ==
754 -
755 -
756 -(% class="box errormessage" %)
757 -(((
758 -11:24:22.397 [44596]NBIOT did not respond.
759 -11:24:24.315 [46530]NBIOT did not respond.
760 -11:24:26.256 [48464]NBIOT did not respond.
761 -11:24:28.196 [50398]NBIOT did not respond.
762 -11:24:30.115 [52332]NBIOT did not respond.
763 -11:24:32.127 [54266]NBIOT did not respond.
764 -11:24:32.127 [54299]Restart the module...
765 -11:24:39.181 [61332]No response when shutting down
766 -)))
767 -
768 -This issue might due to initiate issue for NB-IoT module. In this case, please try:
769 -
770 -1) Open Enclosure
771 -
772 -2) Power off device by pull out the power on Jumper
773 -
774 -3) Power on device by connect back the power jumper.
775 -
776 -4) push reset button.
777 -
778 -[[image:image-20240208001740-1.png]]
779 -
780 -
781 -== 6.3 Issue: "Failed to readI MSI number" ==
782 -
783 -
784 -(% class="box errormessage" %)
785 -(((
786 -[18170]Failed to read IMSI:1umber.
787 -[20109]Failed to read IMSI numoer.
788 -[22048]Failed to read IMSI number.
789 -[29842lRestart the module...
790 -)))
791 -
792 -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"]].
793 -
794 -
795 -== (% data-sider-select-id="765eceff-93b1-40ee-800b-b7b7d022ef8a" %)6.4 Why sometime the AT Command is slow in reponse?(%%) ==
796 -
797 -
798 -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.
799 -
800 -[[image:image-20240226111928-1.png]]
801 -
802 -
803 -== (% data-sider-select-id="765eceff-93b1-40ee-800b-b7b7d022ef8a" %)6.5 What is the Downlink Command by the NB device?(%%) ==
804 -
805 -(% data-sider-select-id="bb6e9353-0c3f-473c-938d-4b416c9a03e6" %)
806 -=== UDP: ===
807 -
808 -(% data-sider-select-id="14a4790e-7faa-4508-a4dd-7605a53f1cb3" %)
809 -Its downlink command is the same as the AT command, but brackets are required.
810 -Example:
811 -
812 -{AT+TDC=300}
813 -
814 -
815 -(% data-sider-select-id="90b80f1a-e924-4c8a-afc5-4429e019a657" %)
816 -=== MQTT: ===
817 -
818 -Json：
819 -
820 -The Json format in MQTT mode needs to be configured with all commands.
821 -If you have configurations that need to be changed, please change them in the template below.
822 -Template:
823 -
824 -{
825 -"AT+SERVADDR":"119.91.62.30,1882",
826 -"AT+CLIENT":"JwcXKjQBNhQ2JykDDAA5Ahs",
827 -"AT+UNAME":"usenamedragino",
828 -"AT+PWD":"passworddragino",
829 -"AT+PUBTOPIC":"123",
830 -"AT+SUBTOPIC":"321",
831 -"AT+TDC":"7200",
832 -"AT+INTMOD":"0",
833 -"AT+APN":"NULL",
834 -"AT+5VT":"0",
835 -"AT+PRO":"3,5",
836 -"AT+TR":"900",
837 -"AT+NOUD":"0",
838 -"AT+CSQTIME":"5",
839 -"AT+DNSTIMER":"0",
840 -"AT+TLSMOD":"0,0",
841 -"AT+MQOS":"0",
842 -"AT+TEMPALARM1":"0",
843 -"AT+TEMPALARM2":"10",
844 -"AT+TEMPALARM3":"0"
845 -}
846 -
847 -Hex：
848 -
849 -MQTT's hex format. Since many commands need to support strings, only a few commands are supported.
850 -
851 -The supported commands are consistent with LoRaWAN's hex commands.
852 -Please refer to the following link to obtain the hex format:
853 -
854 -[[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/]]
855 -
856 -
857 -== (% data-sider-select-id="765eceff-93b1-40ee-800b-b7b7d022ef8a" %)6.6 How to obtain device logs？(%%) ==
858 -
859 -* **AT Command: AT** **+GETLOG**
860 -
861 -This command can be used to query upstream logs of data packets.
862 -
863 -[[image:image-20240701114700-1.png]]
864 -
865 -
866 -
867 -
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