Last modified by Bei Jinggeng on 2025/01/10 15:06
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From version < 109.2 >
edited by Xiaoling
on 2023/12/20 17:51
To version < 117.1 >
edited by Mengting Qiu
on 2024/09/25 14:40
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1 -XWiki.Xiaoling
1 +XWiki.ting
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281 281  )))
282 282  )))
283 283  
284 -==== 3.3.2.1 Configure UART settings for RS485 or TTL communication ====
284 +==== 3.3.2.1 Configure UART settings for RS485 communication ====
285 285  
286 286  
287 -RS485-LN can connect to either RS485 sensors or TTL sensor. User need to specify what type of sensor need to connect.
287 +To use RS485-LN to read data from RS485 sensors, connect the RS485-LN A/B traces to the sensors. The related commands for UART settings are:
288 288  
289 -To use RS485-LN to read data from RS485 sensors, connect the RS485-LN A/B traces to the sensors. And user need to make sure RS485-LN use the match UART setting to access the sensors. The related commands for UART settings are:
290 -
291 -(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
292 -|=(% style="width: 126px; background-color:#D9E2F3;color:#0070C0" %)(((
289 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
290 +|=(% style="width: 126px; background-color:#4F81BD;color:white" %)(((
293 293  **AT Commands**
294 -)))|=(% style="width: 187px; background-color:#D9E2F3;color:#0070C0" %)(((
292 +)))|=(% style="width: 187px; background-color:#4F81BD;color:white" %)(((
295 295  **Description**
296 -)))|=(% style="width: 197px;background-color:#D9E2F3;color:#0070C0" %)(((
294 +)))|=(% style="width: 197px;background-color:#4F81BD;color:white" %)(((
297 297  **Example**
298 298  )))
299 299  |(% style="width:126px" %)(((
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356 356  Some sensors might need to configure before normal operation. User can configure such sensor via PC and RS485 adapter or through RS485-LN AT Commands (% style="color:#4f81bd" %)**AT+CFGDEV**(%%). Each (% style="color:#4f81bd" %)**AT+CFGDEV **(%%)equals to send a RS485 command to sensors. This command will only run when user input it and won't run during each sampling.
357 357  )))
358 358  
359 -(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
360 -|=(% style="width: 122px; background-color:#D9E2F3;color:#0070C0" %)**AT Commands**|=(% style="width: 198px; background-color:#D9E2F3;color:#0070C0" %)**Description**|=(% style="width: 190px;background-color:#D9E2F3;color:#0070C0" %)**Example**
357 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
358 +|=(% style="width: 122px; background-color:#4F81BD;color:white" %)**AT Commands**|=(% style="width: 198px; background-color:#4F81BD;color:white" %)**Description**|=(% style="width: 190px;background-color:#4F81BD;color:white" %)**Example**
361 361  |(% style="width:122px" %)AT+CFGDEV|(% style="width:196px" %)(((
362 362  (((
363 363  This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
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573 573  == 3.4 Uplink Payload ==
574 574  
575 575  
576 -(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
577 -|(% style="background-color:#d9e2f3; color:#0070c0; width:70px" %)(((
574 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
575 +|(% style="background-color:#4f81bd; color:white; width:70px" %)(((
578 578  **Size(bytes)**
579 -)))|(% style="background-color:#d9e2f3; color:#0070c0; width:80px" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0; width:360px" %)(((
577 +)))|(% style="background-color:#4f81bd; color:white; width:80px" %)**1**|(% style="background-color:#4f81bd; color:white; width:360px" %)(((
580 580  **Length depends on the return from the commands**
581 581  )))
582 582  |(% style="width:90px" %)(((
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738 738  )))
739 739  
740 740  (((
741 -(% style="color:blue" %)**Example 2:**  (%%) ~-~-> Configure with requesting uplink and original downlink command (**YY=FF**)
739 +(% style="color:blue" %)**Example 2:**  (%%)
742 742  )))
743 743  
744 744  (((
745 -User in IoT server send a downlink command: (% style="color:#4f81bd" %)**A8 01 06 0A 08 00 04 00 01 YY**
743 +Check TTL Sensor return:
746 746  )))
747 747  
748 748  (((
749 -
750 -)))
751 -
752 752  (((
753 -(((
754 -RS485-LN got this downlink command and send (% style="color:#4f81bd" %)**0A 08 00 04 00 01 **(%%)to Modbus network. One of the RS485 sensor in the network send back Modbus reply **0A 08 00 04 00 00**. RS485-LN get this reply and combine with the original downlink command and uplink. The uplink message is:  **A8** (% style="color:#4f81bd" %)**0A 08 00 04 00  **(% style="color:red" %)**01 06** ** **(% style="color:green" %)**0A 08 00 04 00 00**
748 +[[image:http://8.211.40.43/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/test/WebHome/1654132684752-193.png?rev=1.1||alt="1654132684752-193.png"]](% title="Click and drag to resize" %)​
755 755  )))
756 -
757 -
758 758  )))
759 759  
760 -(((
761 - (% aria-label="1654159460680-153.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654159460680-153.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
762 -)))
763 763  
764 764  
765 -
766 766  ==== (% style="color:blue" %)**Set Payload version**(%%) ====
767 767  
768 768  
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1388 1388  To enable the listening mode, use can run the command (% style="color:#4472c4" %)** AT+RXMODE**.
1389 1389  )))
1390 1390  
1391 -(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
1392 -|=(% style="width: 156px; background-color:#D9E2F3;color:#0070C0" %)(((
1379 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
1380 +|=(% style="width: 156px; background-color:#4F81BD;color:white" %)(((
1393 1393  **Command example**
1394 -)))|=(% style="width: 355px; background-color:#D9E2F3;color:#0070C0" %)(((
1382 +)))|=(% style="width: 355px; background-color:#4F81BD;color:white" %)(((
1395 1395  **Function**
1396 1396  )))
1397 1397  |(% style="width:156px" %)(((
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1470 1470  
1471 1471  
1472 1472  (% border="1.5" cellspacing="4" style="background-color:#f2f2f2; width:430px" %)
1473 -|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)**Button**|=(% style="width: 380px;background-color:#D9E2F3;color:#0070C0" %)**Feature**
1461 +|=(% style="width: 50px;background-color:#4F81BD;color:white" %)**Button**|=(% style="width: 380px;background-color:#4F81BD;color:white" %)**Feature**
1474 1474  |(% style="width:50px" %)ACT|(% style="width:361px" %)If RS485 joined in network, press this button for more than 1 second, RS485 will upload a packet, and the SYS LED will give a (% style="color:blue" %)**Blue blink**
1475 1475  |(% style="width:50px" %)RST|(% style="width:361px" %)Reboot RS485
1476 1476  |(% style="width:50px" %)PRO|(% style="width:361px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
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1479 1479  
1480 1480  
1481 1481  (% border="1.5" cellspacing="4" style="background-color:#f2f2f2; width:430px" %)
1482 -|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)**LEDs**|=(% style="width: 380px;background-color:#D9E2F3;color:#0070C0" %)**Feature**
1470 +|=(% style="width: 50px;background-color:#4F81BD;color:white" %)**LEDs**|=(% style="width: 380px;background-color:#4F81BD;color:white" %)**Feature**
1483 1483  |PWR|Always on if there is power
1484 1484  |SYS|After device is powered on, the SYS will (% style="color:green" %)**fast blink in GREEN**(%%) for 5 times, means RS485-LN start to join LoRaWAN network. If join success, SYS will be (% style="color:green" %)**on GREEN for 5 seconds** (%%)**. **SYS will (% style="color:green" %)**blink Blue**(%%) on every upload and (% style="color:green" %)**blink Green**(%%) once receive a downlink message.
1485 1485  
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1696 1696  1. Check if Modbus-MTU return back the expected result to RS485-LN.
1697 1697  1. If both b) and c) has issue, we can compare PC’s output and RS485-LN output.
1698 1698  
1699 -[[image:image-20221130104310-1.png||height="380" width="680"]]
1687 +[[image:image-20240816112950-1.png||height="382" width="731"]]
1700 1700  
1701 1701  
1702 1702  Example Connection:
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1818 1818  Please see this link for debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome]]
1819 1819  
1820 1820  
1821 -== 7.2 Why I can't join TTN V3 in US915 /AU915 bands? ==
1809 +== 7.2 Why customers can't join TTN V3 in US915 /AU915 bands? ==
1822 1822  
1823 1823  
1824 1824  It might about the channels mapping. Please see for detail: [[Notice of Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1825 1825  
1826 1826  
1815 +== 7.3 Why can't customers see the device's data in the server when the data is too long? ==
1816 +
1817 +This is due to the limitation of the lorawan protocol, and the fixed DR needs to be adjusted to improve this problem.
1818 +
1819 +Please refer to the following link for the number of bytes limited by different frequencies and different DRs in the lorawan protocol
1820 +
1821 +[[lora-alliance.org/wp-content/uploads/2021/05/RP002-1.0.3-FINAL-1.pdf>>url:https://lora-alliance.org/wp-content/uploads/2021/05/RP002-1.0.3-FINAL-1.pdf]]
1822 +
1823 +Example:
1824 +
1825 +[[image:image-20240620145456-1.png]]
1826 +
1827 +Please refer to the following command to fix DR
1828 +
1829 +AT+ADR=0
1830 +
1831 +AT+DR=3
1832 +
1833 +Downlink command:
1834 +
1835 +[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/#H7.4DataRate>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/#H7.4DataRate]]
1836 +
1837 +
1838 +
1827 1827  = 8. Order Info =
1828 1828  
1829 1829  
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