Last modified by Bei Jinggeng on 2025/01/16 11:36
<
From version < 76.1 >
edited by Edwin Chen
on 2022/10/06 15:44
To version < 97.1 >
edited by Bei Jinggeng
on 2022/11/30 10:55
>
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Summary

Details

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Author
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1 -XWiki.Edwin
1 +XWiki.Bei
Content
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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  
... ... @@ -76,7 +76,7 @@
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
... ... @@ -108,7 +108,6 @@
108 108  * Automatic RF Sense and CAD with ultra-fast AFC.
109 109  * Packet engine up to 256 bytes with CRC
110 110  
111 -
112 112  == 1.3 Features ==
113 113  
114 114  
... ... @@ -121,7 +121,6 @@
121 121  * Support Modbus protocol
122 122  * Support Interrupt uplink (Since hardware version v1.2)
123 123  
124 -
125 125  == 1.4 Applications ==
126 126  
127 127  
... ... @@ -132,7 +132,6 @@
132 132  * Smart Cities
133 133  * Smart Factory
134 134  
135 -
136 136  == 1.5 Firmware Change log ==
137 137  
138 138  
... ... @@ -306,10 +306,10 @@
306 306  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:
307 307  
308 308  
309 -(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
294 +(% border="1" cellspacing="5" style="background-color:#ffffcc; color:green; width:510px" %)
310 310  |=(% style="width: 110px;" %)(((
311 311  **AT Commands**
312 -)))|=(% style="width: 190px;" %)(((
297 +)))|=(% style="width: 210px;" %)(((
313 313  **Description**
314 314  )))|=(% style="width: 190px;" %)(((
315 315  **Example**
... ... @@ -364,7 +364,6 @@
364 364  )))
365 365  )))
366 366  
367 -
368 368  === 3.3.2 Configure sensors ===
369 369  
370 370  
... ... @@ -376,8 +376,8 @@
376 376  )))
377 377  )))
378 378  
379 -(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
380 -|=(% style="width: 110px;" %)**AT Commands**|=(% style="width: 190px;" %)**Description**|=(% style="width: 190px;" %)**Example**
363 +(% border="1" cellspacing="5" style="background-color:#ffffcc; color:green; width:510px" %)
364 +|=(% style="width: 110px;" %)**AT Commands**|=(% style="width: 210px;" %)**Description**|=(% style="width: 190px;" %)**Example**
381 381  |AT+CFGDEV|(% style="width:110px" %)(((
382 382  (((
383 383  This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
... ... @@ -392,7 +392,6 @@
392 392  )))
393 393  )))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
394 394  
395 -
396 396  === 3.3.3 Configure read commands for each sampling ===
397 397  
398 398  
... ... @@ -425,7 +425,7 @@
425 425  
426 426  (% border="1" style="background-color:#4bacc6; color:white; width:499px" %)
427 427  |(% style="width:496px" %)(((
428 -(% style="color:#037691" %)**AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
411 +**AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
429 429  
430 430  **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
431 431  
... ... @@ -511,12 +511,15 @@
511 511  Final Payload is (% style="color:#4f81bd" %)**PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
512 512  
513 513  
514 -1. PAYVER: Defined by AT+PAYVER
515 -1. PAYLOAD COUNT: Total how many uplinks of this sampling.
516 -1. PAYLOAD#: Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
517 -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
497 +~1. PAYVER: Defined by AT+PAYVER
518 518  
499 +2. PAYLOAD COUNT: Total how many uplinks of this sampling.
519 519  
501 +3. PAYLOAD#: Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
502 +
503 +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
504 +
505 +
520 520  (% 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" %)​
521 521  
522 522  
... ... @@ -582,8 +582,26 @@
582 582  == 3.4 Uplink Payload ==
583 583  
584 584  
585 -(% aria-label="image-20220606110929-1.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220606110929-1.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"]]
571 +(% border="1" cellspacing="5" style="background-color:#ffffcc; color:green; width:500px" %)
572 +|=(% scope="row" style="width: 60px;" %)(((
573 +Size(bytes)
574 +)))|(% style="width:80px" %)1|(% style="width:360px" %)(((
575 +Length depends on the return from the commands
576 +)))
577 +|=(% style="width: 90px;" %)(((
578 +Value
579 +)))|(% style="width:114px" %)(((
580 +PAYLOAD_VER
581 +)))|(% style="width:353px" %)(((
582 +If the valid payload is too long and exceed the maximum
586 586  
584 +support payload length in server, server will show payload not
585 +
586 +provided in the LoRaWAN server.
587 +)))
588 +
589 +(% 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"]]
590 +
587 587  (% title="Click and drag to resize" %)​
588 588  
589 589  Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
... ... @@ -645,7 +645,7 @@
645 645  
646 646  
647 647  (((
648 -This command is used to configure the RS485 devices; they won't be used during sampling.
652 +This command is used to configure the RS485 devices; they won't be used during sampling. Max Length of AT+CFGDEV is **40 bytes**.
649 649  )))
650 650  
651 651  (((
... ... @@ -1184,7 +1184,27 @@
1184 1184  
1185 1185  
1186 1186  
1191 +==== (% style="color:blue" %)**Configure Databit (Since Version 1.4.0)**(%%) ====
1187 1187  
1193 +
1194 +* (((
1195 +(% style="color:#037691" %)** AT Command:**
1196 +)))
1197 +
1198 +(% style="color:#4472c4" %)** AT+DATABIT=7    **(%%)~/~/ Set the data bits to 7
1199 +
1200 +(% style="color:#4472c4" %)** AT+DATABIT=8    **(%%)~/~/ Set the data bits to 8
1201 +
1202 +* (((
1203 +(% style="color:#037691" %)**Downlink Payload:**
1204 +)))
1205 +
1206 +(% style="color:#4472c4" %)** A7 04 07**(%%): Same as  AT+DATABIT=7
1207 +
1208 +(% style="color:#4472c4" %)** A7 04 08**(%%): Same as  AT+DATABIT=8
1209 +
1210 +
1211 +
1188 1188  ==== (% style="color:blue" %)**Encrypted payload**(%%) ====
1189 1189  
1190 1190  (((
... ... @@ -1260,20 +1260,17 @@
1260 1260  
1261 1261  (% style="color:#4472c4" %)** AT+RPL=5**  (%%) ~/~/ After receiving the package from the server, it will immediately upload the content of the package to the server, the port number is 100.
1262 1262  
1263 -
1264 1264  Example：**aa xx xx xx xx**         ~/~/ aa indicates whether the configuration has changed, 00 is yes, 01 is no; xx xx xx xx are the bytes sent.
1265 1265  
1266 1266  
1267 1267  [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220823173747-6.png?width=1124&height=165&rev=1.1||alt="image-20220823173747-6.png"]]
1268 1268  
1269 -
1270 -
1271 1271  For example, sending 11 22 33 44 55 66 77 will return invalid configuration 00 11 22 33 44 55 66 77.
1272 1272  
1273 1273  
1295 +
1274 1274  [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220823173833-7.png?width=1124&height=149&rev=1.1||alt="image-20220823173833-7.png"]]
1275 1275  
1276 -
1277 1277  For example, if 01 00 02 58 is issued, a valid configuration of 01 01 00 02 58 will be returned.
1278 1278  
1279 1279  
... ... @@ -1315,7 +1315,7 @@
1315 1315  (% style="color:#037691" %)**Downlink Payload:**
1316 1316  )))
1317 1317  
1318 -(% style="color:#4472c4" %)** A6 aa bb bb               ** (%%) ~/~/same as AT+RXMODE=aa,bb
1339 +(% style="color:#4472c4" %)** A6 aa bb bb               ** (%%) ~/~/ same as AT+RXMODE=aa,bb
1319 1319  
1320 1320  [[image:image-20220824144240-1.png]]
1321 1321  
... ... @@ -1432,22 +1432,20 @@
1432 1432  == 3.7 Buttons ==
1433 1433  
1434 1434  
1435 -(% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1436 -|=(% style="width: 50px;" %)**Button**|=(% style="width: 361px;" %)**Feature**
1456 +(% border="1.5" cellspacing="4" style="background-color:#ffffcc; width:430px" %)
1457 +|=(% style="width: 50px;" %)**Button**|=(% style="width: 380px;" %)**Feature**
1437 1437  |(% 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**
1438 1438  |(% style="width:50px" %)**RST**|(% style="width:361px" %)Reboot RS485
1439 1439  |(% style="width:50px" %)**PRO**|(% style="width:361px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1440 1440  
1441 -
1442 1442  == 3.8 LEDs ==
1443 1443  
1444 1444  
1445 -(% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1465 +(% border="1.5" cellspacing="4" style="background-color:#ffffcc; width:430px" %)
1446 1446  |=(% style="width: 50px;" %)**LEDs**|=(% style="width: 380px;" %)**Feature**
1447 1447  |**PWR**|Always on if there is power
1448 1448  |**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.
1449 1449  
1450 -
1451 1451  = 4. Case Study =
1452 1452  
1453 1453  
... ... @@ -1646,7 +1646,7 @@
1646 1646  == 6.5 Can i use point to point communication for RS485-LN? ==
1647 1647  
1648 1648  
1649 -Yes, please refer [[Point to Point Communication for RS485-LN>>Point to Point Communication for RS485-LN]].
1668 +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]].
1650 1650  
1651 1651  
1652 1652  
... ... @@ -1656,7 +1656,107 @@
1656 1656  [[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/]]
1657 1657  
1658 1658  
1678 +== 6.7 How to judge whether there is a problem with the set COMMAND ==
1659 1659  
1680 +=== 6.7.1 Introduce: ===
1681 +
1682 +
1683 +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:
1684 +
1685 +1. Test if Modbus-MTU works with PC commands.
1686 +1. Check if RS485-LN sent the expected command to Mobus-MTU
1687 +1. Check if Modbus-MTU return back the expected result to RS485-LN.
1688 +1. If both b) and c) has issue, we can compare PC’s output and RS485-LN output.
1689 +
1690 +[[image:image-20221130104310-1.png||height="380" width="680"]]
1691 +
1692 +
1693 +Example Connection:
1694 +
1695 +[[image:image-20221130104310-2.png]]
1696 +
1697 +
1698 +=== 6.7.2 Set up PC to monitor RS485 network With Serial tool ===
1699 +
1700 +Note: Receive and send set to hex mode
1701 +
1702 +[[image:image-20221130104310-3.png||height="616" width="714"]]
1703 +
1704 +
1705 +=== 6.7.3 With ModRSsim2: ===
1706 +
1707 +(1)Select serial port MODBUS RS-232
1708 +
1709 +[[image:image-20221130104310-4.png||height="390" width="865"]]
1710 +
1711 +
1712 +(2)Click the serial port icon
1713 +
1714 +[[image:image-20221130104310-5.png||height="392" width="870"]]
1715 +
1716 +
1717 +(3)After selecting the correct serial port and baud rate, click ok
1718 +
1719 +[[image:image-20221130104310-6.png]]
1720 +
1721 +(4)Click the comms.
1722 +
1723 +[[image:image-20221130104310-7.png||height="376" width="835"]]
1724 +
1725 +(% class="wikigeneratedid" id="HRunRS485-LN2FBLcommandandmonitorifitiscorrect." %)
1726 +Run RS485-LN/BL command and monitor if it is correct.
1727 +
1728 +
1729 +=== 6.7.4 Example – Test the CFGDEV command ===
1730 +
1731 +RS485-LN sent below command:
1732 +
1733 +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.
1734 +
1735 +
1736 +We can see the output from the Serial port tool to analyze. And check if they are expected result.
1737 +
1738 +[[image:image-20221130104310-8.png||height="214" width="797"]]
1739 +
1740 +We can also use ModRSsim2 to see the output.
1741 +
1742 +[[image:image-20221130104310-9.png||height="531" width="729"]]
1743 +
1744 +
1745 +
1746 +=== 6.7.5 Example – Test CMD command sets. ===
1747 +
1748 +Run AT+SENSORVALUE=1 to test the CMD commands set in RS485-LN.
1749 +
1750 +
1751 +Serial port tool:
1752 +
1753 +[[image:image-20221130104310-10.png||height="339" width="844"]]
1754 +
1755 +ModRSsim2:
1756 +
1757 +[[image:image-20221130104310-11.png||height="281" width="962"]]
1758 +
1759 +
1760 +
1761 +=== 6.7.6 Test with PC ===
1762 +
1763 +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.
1764 +
1765 +
1766 +Or User can send the working commands set in PC serial tool to Dragino Support to check what should be configured in RS485-LN.
1767 +
1768 +Connection method：
1769 +
1770 +[[image:image-20221130104310-12.png]]
1771 +
1772 +Link situation:
1773 +
1774 +[[image:image-20221130104310-13.png||height="458" width="486"]]
1775 +
1776 +[[image:image-20221130104310-14.png||height="371" width="823"]]
1777 +
1778 +
1660 1660  = 7. Trouble Shooting =
1661 1661  
1662 1662  
... ... @@ -1692,7 +1692,6 @@
1692 1692  * (% style="color:red" %)**RU864**(%%):  frequency bands RU864
1693 1693  * (% style="color:red" %)**KZ865**(%%):  frequency bands KZ865
1694 1694  
1695 -
1696 1696  = 9.Packing Info =
1697 1697  
1698 1698  
... ... @@ -1709,7 +1709,6 @@
1709 1709  * Package Size / pcs : 14.5 x 8 x 5 cm
1710 1710  * Weight / pcs : 170g
1711 1711  
1712 -
1713 1713  = 10. FCC Caution for RS485LN-US915 =
1714 1714  
1715 1715  
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