Last modified by Bei Jinggeng on 2025/01/16 11:36
<
From version < 97.1 >
edited by Bei Jinggeng
on 2022/11/30 10:55
To version < 79.2 >
edited by Xiaoling
on 2022/10/13 17:07
>
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1 -XWiki.Bei
1 +XWiki.Xiaoling
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33 33  
34 34  == 1.1 What is RS485-LN RS485 to LoRaWAN Converter ==
35 35  
36 -
37 37  (((
37 +(((
38 +(((
39 +
40 +
38 38  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.
39 39  )))
43 +)))
40 40  
41 41  (((
46 +(((
42 42  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.
43 43  )))
49 +)))
44 44  
45 45  (((
52 +(((
46 46  (% 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.
47 47  )))
55 +)))
48 48  
49 49  (((
58 +(((
50 50  (% 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.
51 51  )))
52 52  
53 53  (((
54 54  (% 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 +
55 55  )))
67 +)))
68 +)))
56 56  
57 -
58 58  (% 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" %)​
59 59  
60 60  
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64 64  
65 65  (% style="color:#037691" %)**Hardware System:**
66 66  
67 -* STM32L072xxxx MCU
79 +* STM32L072CZT6 MCU
68 68  * SX1276/78 Wireless Chip 
69 69  * Power Consumption (exclude RS485 device):
70 70  ** Idle: 32mA@12v
... ... @@ -96,6 +96,8 @@
96 96  * Automatic RF Sense and CAD with ultra-fast AFC.
97 97  * Packet engine up to 256 bytes with CRC
98 98  
111 +
112 +
99 99  == 1.3 Features ==
100 100  
101 101  
... ... @@ -108,6 +108,8 @@
108 108  * Support Modbus protocol
109 109  * Support Interrupt uplink (Since hardware version v1.2)
110 110  
125 +
126 +
111 111  == 1.4 Applications ==
112 112  
113 113  
... ... @@ -118,6 +118,8 @@
118 118  * Smart Cities
119 119  * Smart Factory
120 120  
137 +
138 +
121 121  == 1.5 Firmware Change log ==
122 122  
123 123  
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291 291  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:
292 292  
293 293  
294 -(% border="1" cellspacing="5" style="background-color:#ffffcc; color:green; width:510px" %)
312 +(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
295 295  |=(% style="width: 110px;" %)(((
296 296  **AT Commands**
297 -)))|=(% style="width: 210px;" %)(((
315 +)))|=(% style="width: 190px;" %)(((
298 298  **Description**
299 299  )))|=(% style="width: 190px;" %)(((
300 300  **Example**
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349 349  )))
350 350  )))
351 351  
370 +
371 +
352 352  === 3.3.2 Configure sensors ===
353 353  
354 354  
... ... @@ -360,8 +360,8 @@
360 360  )))
361 361  )))
362 362  
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**
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**
365 365  |AT+CFGDEV|(% style="width:110px" %)(((
366 366  (((
367 367  This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
... ... @@ -376,6 +376,8 @@
376 376  )))
377 377  )))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
378 378  
399 +
400 +
379 379  === 3.3.3 Configure read commands for each sampling ===
380 380  
381 381  
... ... @@ -408,7 +408,7 @@
408 408  
409 409  (% border="1" style="background-color:#4bacc6; color:white; width:499px" %)
410 410  |(% style="width:496px" %)(((
411 -**AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
433 +(% style="color:#037691" %)**AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
412 412  
413 413  **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
414 414  
... ... @@ -494,15 +494,11 @@
494 494  Final Payload is (% style="color:#4f81bd" %)**PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
495 495  
496 496  
497 -~1. PAYVER: Defined by AT+PAYVER
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
498 498  
499 -2. PAYLOAD COUNT: Total how many uplinks of this sampling.
500 -
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 -
506 506  (% 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" %)​
507 507  
508 508  
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568 568  == 3.4 Uplink Payload ==
569 569  
570 570  
571 -(% border="1" cellspacing="5" style="background-color:#ffffcc; color:green; width:500px" %)
572 -|=(% scope="row" style="width: 60px;" %)(((
589 +(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:520px" %)
590 +|(% style="width:90px" %)(((
573 573  Size(bytes)
574 -)))|(% style="width:80px" %)1|(% style="width:360px" %)(((
592 +)))|(% style="width:114px" %)1|(% style="width:353px" %)(((
575 575  Length depends on the return from the commands
576 576  )))
577 -|=(% style="width: 90px;" %)(((
595 +|(% style="width:90px" %)(((
578 578  Value
579 579  )))|(% style="width:114px" %)(((
580 580  PAYLOAD_VER
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1186 1186  )))
1187 1187  
1188 1188  
1189 -
1190 -
1191 1191  ==== (% style="color:blue" %)**Configure Databit (Since Version 1.4.0)**(%%) ====
1192 1192  
1193 -
1194 1194  * (((
1195 1195  (% style="color:#037691" %)** AT Command:**
1196 1196  )))
1197 1197  
1198 -(% style="color:#4472c4" %)** AT+DATABIT=7    **(%%)~/~/ Set the data bits to 7
1213 +**~ AT+DATABIT=7  **~/~/ Set the data bits to 7
1199 1199  
1200 -(% style="color:#4472c4" %)** AT+DATABIT=8    **(%%)~/~/ Set the data bits to 8
1215 +**~ AT+DATABIT=8  **~/~/ Set the data bits to 8
1201 1201  
1202 1202  * (((
1203 1203  (% style="color:#037691" %)**Downlink Payload:**
1204 1204  )))
1205 1205  
1206 -(% style="color:#4472c4" %)** A7 04 07**(%%): Same as  AT+DATABIT=7
1221 +**~ A7 04 07**: Same as  AT+DATABIT=7
1207 1207  
1208 -(% style="color:#4472c4" %)** A7 04 08**(%%): Same as  AT+DATABIT=8
1223 +**~ A7 04 08**: Same as  AT+DATABIT=8
1209 1209  
1210 1210  
1211 1211  
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1454 1454  
1455 1455  
1456 1456  (% border="1.5" cellspacing="4" style="background-color:#ffffcc; width:430px" %)
1457 -|=(% style="width: 50px;" %)**Button**|=(% style="width: 380px;" %)**Feature**
1472 +|=(% style="width: 50px;" %)**Button**|=(% style="width: 361px;" %)**Feature**
1458 1458  |(% 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**
1459 1459  |(% style="width:50px" %)**RST**|(% style="width:361px" %)Reboot RS485
1460 1460  |(% style="width:50px" %)**PRO**|(% style="width:361px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1461 1461  
1477 +
1478 +
1462 1462  == 3.8 LEDs ==
1463 1463  
1464 1464  
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1467 1467  |**PWR**|Always on if there is power
1468 1468  |**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.
1469 1469  
1487 +
1488 +
1470 1470  = 4. Case Study =
1471 1471  
1472 1472  
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1665 1665  == 6.5 Can i use point to point communication for RS485-LN? ==
1666 1666  
1667 1667  
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]].
1687 +Yes, please refer [[Point to Point Communication for RS485-LN>>Point to Point Communication for RS485-LN]].
1669 1669  
1670 1670  
1671 1671  
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1675 1675  [[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/]]
1676 1676  
1677 1677  
1678 -== 6.7 How to judge whether there is a problem with the set COMMAND ==
1679 1679  
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 -
1779 1779  = 7. Trouble Shooting =
1780 1780  
1781 1781  
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1811 1811  * (% style="color:red" %)**RU864**(%%):  frequency bands RU864
1812 1812  * (% style="color:red" %)**KZ865**(%%):  frequency bands KZ865
1813 1813  
1733 +
1734 +
1814 1814  = 9.Packing Info =
1815 1815  
1816 1816  
... ... @@ -1827,6 +1827,8 @@
1827 1827  * Package Size / pcs : 14.5 x 8 x 5 cm
1828 1828  * Weight / pcs : 170g
1829 1829  
1751 +
1752 +
1830 1830  = 10. FCC Caution for RS485LN-US915 =
1831 1831  
1832 1832  
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