Last modified by Bei Jinggeng on 2025/01/16 11:36
<
From version < 79.2 >
edited by Xiaoling
on 2022/10/13 17:07
To version < 95.1 >
edited by Bei Jinggeng
on 2022/11/30 10:47
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1 -XWiki.Xiaoling
1 +XWiki.Bei
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33 33  
34 34  == 1.1 What is RS485-LN RS485 to LoRaWAN Converter ==
35 35  
36 -(((
37 -(((
38 -(((
39 -
40 40  
37 +(((
41 41  The Dragino RS485-LN is a (% style="color:blue" %)**RS485 to LoRaWAN Converter**(%%). It converts the RS485 signal into LoRaWAN wireless signal which simplify the IoT installation and reduce the installation/maintaining cost.
42 42  )))
43 -)))
44 44  
45 45  (((
46 -(((
47 47  RS485-LN allows user to (% style="color:blue" %)**monitor / control RS485 devices**(%%) and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, smartphone detection, building automation, and so on.
48 48  )))
49 -)))
50 50  
51 51  (((
52 -(((
53 53  (% style="color:blue" %)**For data uplink**(%%), RS485-LN sends user-defined commands to RS485 devices and gets the return from the RS485 devices. RS485-LN will process these returns according to user-define rules to get the final payload and upload to LoRaWAN server.
54 54  )))
55 -)))
56 56  
57 57  (((
58 -(((
59 59  (% style="color:blue" %)**For data downlink**(%%), RS485-LN runs in LoRaWAN Class C. When there downlink commands from LoRaWAN server, RS485-LN will forward the commands from LoRaWAN server to RS485 devices.
60 60  )))
61 61  
62 62  (((
63 63  (% style="color:blue" %)**Demo Dashboard for RS485-LN**(%%) connect to two energy meters: [[https:~~/~~/app.datacake.de/dashboard/d/58844a26-378d-4c5a-aaf5-b5b5b153447a>>url:https://app.datacake.de/dashboard/d/58844a26-378d-4c5a-aaf5-b5b5b153447a]]
64 -
65 -
66 66  )))
67 -)))
68 -)))
69 69  
57 +
70 70  (% aria-label="1653267211009-519.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1653267211009-519.png||data-widget="image" height="419" width="724"]](% 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" %)​
71 71  
72 72  
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76 76  
77 77  (% style="color:#037691" %)**Hardware System:**
78 78  
79 -* STM32L072CZT6 MCU
67 +* STM32L072xxxx MCU
80 80  * SX1276/78 Wireless Chip 
81 81  * Power Consumption (exclude RS485 device):
82 82  ** Idle: 32mA@12v
... ... @@ -109,7 +109,6 @@
109 109  * Packet engine up to 256 bytes with CRC
110 110  
111 111  
112 -
113 113  == 1.3 Features ==
114 114  
115 115  
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123 123  * Support Interrupt uplink (Since hardware version v1.2)
124 124  
125 125  
126 -
127 127  == 1.4 Applications ==
128 128  
129 129  
... ... @@ -135,7 +135,6 @@
135 135  * Smart Factory
136 136  
137 137  
138 -
139 139  == 1.5 Firmware Change log ==
140 140  
141 141  
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309 309  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:
310 310  
311 311  
312 -(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
297 +(% border="1" cellspacing="5" style="background-color:#ffffcc; color:green; width:510px" %)
313 313  |=(% style="width: 110px;" %)(((
314 314  **AT Commands**
315 -)))|=(% style="width: 190px;" %)(((
300 +)))|=(% style="width: 210px;" %)(((
316 316  **Description**
317 317  )))|=(% style="width: 190px;" %)(((
318 318  **Example**
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368 368  )))
369 369  
370 370  
371 -
372 372  === 3.3.2 Configure sensors ===
373 373  
374 374  
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380 380  )))
381 381  )))
382 382  
383 -(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
384 -|=(% style="width: 110px;" %)**AT Commands**|=(% style="width: 190px;" %)**Description**|=(% style="width: 190px;" %)**Example**
367 +(% border="1" cellspacing="5" style="background-color:#ffffcc; color:green; width:510px" %)
368 +|=(% style="width: 110px;" %)**AT Commands**|=(% style="width: 210px;" %)**Description**|=(% style="width: 190px;" %)**Example**
385 385  |AT+CFGDEV|(% style="width:110px" %)(((
386 386  (((
387 387  This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
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397 397  )))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
398 398  
399 399  
400 -
401 401  === 3.3.3 Configure read commands for each sampling ===
402 402  
403 403  
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430 430  
431 431  (% border="1" style="background-color:#4bacc6; color:white; width:499px" %)
432 432  |(% style="width:496px" %)(((
433 -(% style="color:#037691" %)**AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
416 +**AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
434 434  
435 435  **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
436 436  
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516 516  Final Payload is (% style="color:#4f81bd" %)**PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
517 517  
518 518  
519 -1. PAYVER: Defined by AT+PAYVER
520 -1. PAYLOAD COUNT: Total how many uplinks of this sampling.
521 -1. PAYLOAD#: Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
522 -1. DATA: Valid value: max 8 bytes for each uplink so each uplink <= 11 bytes. For the last uplink, DATA will might less than 8 bytes
502 +~1. PAYVER: Defined by AT+PAYVER
523 523  
504 +2. PAYLOAD COUNT: Total how many uplinks of this sampling.
505 +
506 +3. PAYLOAD#: Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
507 +
508 +4. DATA: Valid value: max 8 bytes for each uplink so each uplink <= 11 bytes. For the last uplink, DATA will might less than 8 bytes
509 +
510 +
524 524  (% aria-label="image-20220602155039-4.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602155039-4.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" %)​
525 525  
526 526  
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586 586  == 3.4 Uplink Payload ==
587 587  
588 588  
589 -(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:520px" %)
590 -|(% style="width:90px" %)(((
576 +(% border="1" cellspacing="5" style="background-color:#ffffcc; color:green; width:500px" %)
577 +|=(% scope="row" style="width: 60px;" %)(((
591 591  Size(bytes)
592 -)))|(% style="width:114px" %)1|(% style="width:353px" %)(((
579 +)))|(% style="width:80px" %)1|(% style="width:360px" %)(((
593 593  Length depends on the return from the commands
594 594  )))
595 -|(% style="width:90px" %)(((
582 +|=(% style="width: 90px;" %)(((
596 596  Value
597 597  )))|(% style="width:114px" %)(((
598 598  PAYLOAD_VER
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1204 1204  )))
1205 1205  
1206 1206  
1194 +
1195 +
1207 1207  ==== (% style="color:blue" %)**Configure Databit (Since Version 1.4.0)**(%%) ====
1208 1208  
1198 +
1209 1209  * (((
1210 1210  (% style="color:#037691" %)** AT Command:**
1211 1211  )))
1212 1212  
1213 -**~ AT+DATABIT=7  **~/~/ Set the data bits to 7
1203 +(% style="color:#4472c4" %)** AT+DATABIT=7    **(%%)~/~/ Set the data bits to 7
1214 1214  
1215 -**~ AT+DATABIT=8  **~/~/ Set the data bits to 8
1205 +(% style="color:#4472c4" %)** AT+DATABIT=8    **(%%)~/~/ Set the data bits to 8
1216 1216  
1217 1217  * (((
1218 1218  (% style="color:#037691" %)**Downlink Payload:**
1219 1219  )))
1220 1220  
1221 -**~ A7 04 07**: Same as  AT+DATABIT=7
1211 +(% style="color:#4472c4" %)** A7 04 07**(%%): Same as  AT+DATABIT=7
1222 1222  
1223 -**~ A7 04 08**: Same as  AT+DATABIT=8
1213 +(% style="color:#4472c4" %)** A7 04 08**(%%): Same as  AT+DATABIT=8
1224 1224  
1225 1225  
1226 1226  
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1469 1469  
1470 1470  
1471 1471  (% border="1.5" cellspacing="4" style="background-color:#ffffcc; width:430px" %)
1472 -|=(% style="width: 50px;" %)**Button**|=(% style="width: 361px;" %)**Feature**
1462 +|=(% style="width: 50px;" %)**Button**|=(% style="width: 380px;" %)**Feature**
1473 1473  |(% 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**
1474 1474  |(% style="width:50px" %)**RST**|(% style="width:361px" %)Reboot RS485
1475 1475  |(% style="width:50px" %)**PRO**|(% style="width:361px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1476 1476  
1477 1477  
1478 -
1479 1479  == 3.8 LEDs ==
1480 1480  
1481 1481  
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1485 1485  |**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.
1486 1486  
1487 1487  
1488 -
1489 1489  = 4. Case Study =
1490 1490  
1491 1491  
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1684 1684  == 6.5 Can i use point to point communication for RS485-LN? ==
1685 1685  
1686 1686  
1687 -Yes, please refer [[Point to Point Communication for RS485-LN>>Point to Point Communication for RS485-LN]].
1675 +Yes, please updating point-to-point [[firmware>>https://www.dropbox.com/sh/g99v0fxcltn9r1y/AACP33wo_ZQLsxW2MJ70oUoba/RS485-LN/Firmware?dl=0&subfolder_nav_tracking=1]]，then refer [[Point to Point Communication for RS485-LN>>Point to Point Communication for RS485-LN]].
1688 1688  
1689 1689  
1690 1690  
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1694 1694  [[Use RS485-BL or RS485-LN to connect to RS232 devices. - DRAGINO>>url:http://8.211.40.43:8080/xwiki/bin/view/Main/RS485%20to%20RS232/]]
1695 1695  
1696 1696  
1685 +== 6.7 How to judge whether there is a problem with the set COMMAND ==
1697 1697  
1687 += Introduce: =
1688 +
1689 +
1690 +Users can use below the structure to fast debug the communication between RS485BL and RS485-LN. The principle is to put the PC in the RS485 network and sniff the packet between Modbus MTU and RS485-BL/LN. We can use this way to:
1691 +
1692 +1. Test if Modbus-MTU works with PC commands.
1693 +1. Check if RS485-LN sent the expected command to Mobus-MTU
1694 +1. Check if Modbus-MTU return back the expected result to RS485-LN.
1695 +1. If both b) and c) has issue, we can compare PC’s output and RS485-LN output.
1696 +
1697 +[[image:image-20221130104310-1.png||height="380" width="680"]]
1698 +
1699 +
1700 +Example Connection:
1701 +
1702 +[[image:image-20221130104310-2.png]]
1703 +
1704 +
1705 += Set up PC to monitor RS485 network =
1706 +
1707 +== With Serial tool ==
1708 +
1709 +Note: Receive and send set to hex mode
1710 +
1711 +[[image:image-20221130104310-3.png||height="616" width="714"]]
1712 +
1713 +
1714 +== With ModRSsim2: ==
1715 +
1716 +(1)Select serial port MODBUS RS-232
1717 +
1718 +[[image:image-20221130104310-4.png||height="390" width="865"]]
1719 +
1720 +
1721 +(2)Click the serial port icon
1722 +
1723 +[[image:image-20221130104310-5.png||height="392" width="870"]]
1724 +
1725 +
1726 +(3)After selecting the correct serial port and baud rate, click ok
1727 +
1728 +[[image:image-20221130104310-6.png]]
1729 +
1730 +(4)Click the comms.
1731 +
1732 +[[image:image-20221130104310-7.png||height="376" width="835"]]
1733 +
1734 += Run RS485-LN/BL command and monitor if it is correct. =
1735 +
1736 +== Example – Test the CFGDEV command ==
1737 +
1738 +RS485-LN sent below command:
1739 +
1740 +AT+CFGDEV=01 03 20 00 01 85 c0,1 to RS485 network, and PC is able to get this command and return commands from MTU to show in the serial tool.
1741 +
1742 +
1743 +We can see the output from the Serial port tool to analyze. And check if they are expected result.
1744 +
1745 +[[image:image-20221130104310-8.png||height="214" width="797"]]
1746 +
1747 +We can also use ModRSsim2 to see the output.
1748 +
1749 +[[image:image-20221130104310-9.png||height="531" width="729"]]
1750 +
1751 +
1752 +
1753 +== Example – Test CMD command sets. ==
1754 +
1755 +Run AT+SENSORVALUE=1 to test the CMD commands set in RS485-LN.
1756 +
1757 +
1758 +Serial port tool:
1759 +
1760 +[[image:image-20221130104310-10.png||height="339" width="844"]]
1761 +
1762 +ModRSsim2:
1763 +
1764 +[[image:image-20221130104310-11.png||height="281" width="962"]]
1765 +
1766 +
1767 +
1768 += **Test with PC** =
1769 +
1770 +If there is still have problem to set up correctly the commands between RS485-LN and MTU. User can test the correct RS485 command set in PC and compare with the RS485 command sent out via RS485-LN. as long as both commands are the same, the MTU should return correct result.
1771 +
1772 +
1773 +Or User can send the working commands set in PC serial tool to Dragino Support to check what should be configured in RS485-LN.
1774 +
1775 +Connection method：
1776 +
1777 +[[image:image-20221130104310-12.png]]
1778 +
1779 +Link situation:
1780 +
1781 +[[image:image-20221130104310-13.png||height="458" width="486"]]
1782 +
1783 +[[image:image-20221130104310-14.png||height="371" width="823"]]
1784 +
1698 1698  = 7. Trouble Shooting =
1699 1699  
1700 1700  
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1731 1731  * (% style="color:red" %)**KZ865**(%%):  frequency bands KZ865
1732 1732  
1733 1733  
1734 -
1735 1735  = 9.Packing Info =
1736 1736  
1737 1737  
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1749 1749  * Weight / pcs : 170g
1750 1750  
1751 1751  
1752 -
1753 1753  = 10. FCC Caution for RS485LN-US915 =
1754 1754  
1755 1755  
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