Last modified by Bei Jinggeng on 2025/01/10 15:06
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From version < 110.1 >
edited by Bei Jinggeng
on 2023/12/26 15:08
To version < 115.1 >
edited by Karry Zhuang
on 2024/08/16 11:30
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1 -XWiki.Bei
1 +XWiki.karry
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283 283  
284 284  ==== 3.3.2.1 Configure UART settings for RS485 communication ====
285 285  
286 +
286 286  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:
287 287  
288 -(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
289 -|=(% 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" %)(((
290 290  **AT Commands**
291 -)))|=(% style="width: 187px; background-color:#D9E2F3;color:#0070C0" %)(((
292 +)))|=(% style="width: 187px; background-color:#4F81BD;color:white" %)(((
292 292  **Description**
293 -)))|=(% style="width: 197px;background-color:#D9E2F3;color:#0070C0" %)(((
294 +)))|=(% style="width: 197px;background-color:#4F81BD;color:white" %)(((
294 294  **Example**
295 295  )))
296 296  |(% style="width:126px" %)(((
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353 353  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.
354 354  )))
355 355  
356 -(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
357 -|=(% 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**
358 358  |(% style="width:122px" %)AT+CFGDEV|(% style="width:196px" %)(((
359 359  (((
360 360  This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
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570 570  == 3.4 Uplink Payload ==
571 571  
572 572  
573 -(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
574 -|(% 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" %)(((
575 575  **Size(bytes)**
576 -)))|(% 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" %)(((
577 577  **Length depends on the return from the commands**
578 578  )))
579 579  |(% style="width:90px" %)(((
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1385 1385  To enable the listening mode, use can run the command (% style="color:#4472c4" %)** AT+RXMODE**.
1386 1386  )))
1387 1387  
1388 -(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
1389 -|=(% style="width: 156px; background-color:#D9E2F3;color:#0070C0" %)(((
1389 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
1390 +|=(% style="width: 156px; background-color:#4F81BD;color:white" %)(((
1390 1390  **Command example**
1391 -)))|=(% style="width: 355px; background-color:#D9E2F3;color:#0070C0" %)(((
1392 +)))|=(% style="width: 355px; background-color:#4F81BD;color:white" %)(((
1392 1392  **Function**
1393 1393  )))
1394 1394  |(% style="width:156px" %)(((
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1467 1467  
1468 1468  
1469 1469  (% border="1.5" cellspacing="4" style="background-color:#f2f2f2; width:430px" %)
1470 -|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)**Button**|=(% style="width: 380px;background-color:#D9E2F3;color:#0070C0" %)**Feature**
1471 +|=(% style="width: 50px;background-color:#4F81BD;color:white" %)**Button**|=(% style="width: 380px;background-color:#4F81BD;color:white" %)**Feature**
1471 1471  |(% 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**
1472 1472  |(% style="width:50px" %)RST|(% style="width:361px" %)Reboot RS485
1473 1473  |(% style="width:50px" %)PRO|(% style="width:361px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
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1476 1476  
1477 1477  
1478 1478  (% border="1.5" cellspacing="4" style="background-color:#f2f2f2; width:430px" %)
1479 -|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)**LEDs**|=(% style="width: 380px;background-color:#D9E2F3;color:#0070C0" %)**Feature**
1480 +|=(% style="width: 50px;background-color:#4F81BD;color:white" %)**LEDs**|=(% style="width: 380px;background-color:#4F81BD;color:white" %)**Feature**
1480 1480  |PWR|Always on if there is power
1481 1481  |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.
1482 1482  
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1693 1693  1. Check if Modbus-MTU return back the expected result to RS485-LN.
1694 1694  1. If both b) and c) has issue, we can compare PC’s output and RS485-LN output.
1695 1695  
1696 -[[image:image-20221130104310-1.png||height="380" width="680"]]
1697 +[[image:image-20240816112950-1.png||height="382" width="731"]]
1697 1697  
1698 1698  
1699 1699  Example Connection:
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1815 1815  Please see this link for debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome]]
1816 1816  
1817 1817  
1818 -== 7.2 Why I can't join TTN V3 in US915 /AU915 bands? ==
1819 +== 7.2 Why customers can't join TTN V3 in US915 /AU915 bands? ==
1819 1819  
1820 1820  
1821 1821  It might about the channels mapping. Please see for detail: [[Notice of Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1822 1822  
1823 1823  
1825 +== 7.3 Why can't customers see the device's data in the server when the data is too long? ==
1826 +
1827 +This is due to the limitation of the lorawan protocol, and the fixed DR needs to be adjusted to improve this problem.
1828 +
1829 +Please refer to the following link for the number of bytes limited by different frequencies and different DRs in the lorawan protocol
1830 +
1831 +[[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]]
1832 +
1833 +Example:
1834 +
1835 +[[image:image-20240620145456-1.png]]
1836 +
1837 +Please refer to the following command to fix DR
1838 +
1839 +AT+ADR=0
1840 +
1841 +AT+DR=3
1842 +
1843 +Downlink command:
1844 +
1845 +[[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]]
1846 +
1847 +
1848 +
1824 1824  = 8. Order Info =
1825 1825  
1826 1826  
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