Last modified by Bei Jinggeng on 2025/01/16 11:36
<
From version < 95.1 >
edited by Bei Jinggeng
on 2022/11/30 10:47
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
... ... @@ -97,6 +97,7 @@
97 97  * Packet engine up to 256 bytes with CRC
98 98  
99 99  
112 +
100 100  == 1.3 Features ==
101 101  
102 102  
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110 110  * Support Interrupt uplink (Since hardware version v1.2)
111 111  
112 112  
126 +
113 113  == 1.4 Applications ==
114 114  
115 115  
... ... @@ -121,6 +121,7 @@
121 121  * Smart Factory
122 122  
123 123  
138 +
124 124  == 1.5 Firmware Change log ==
125 125  
126 126  
... ... @@ -294,10 +294,10 @@
294 294  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:
295 295  
296 296  
297 -(% 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" %)
298 298  |=(% style="width: 110px;" %)(((
299 299  **AT Commands**
300 -)))|=(% style="width: 210px;" %)(((
315 +)))|=(% style="width: 190px;" %)(((
301 301  **Description**
302 302  )))|=(% style="width: 190px;" %)(((
303 303  **Example**
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353 353  )))
354 354  
355 355  
371 +
356 356  === 3.3.2 Configure sensors ===
357 357  
358 358  
... ... @@ -364,8 +364,8 @@
364 364  )))
365 365  )))
366 366  
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**
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**
369 369  |AT+CFGDEV|(% style="width:110px" %)(((
370 370  (((
371 371  This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
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381 381  )))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
382 382  
383 383  
400 +
384 384  === 3.3.3 Configure read commands for each sampling ===
385 385  
386 386  
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413 413  
414 414  (% border="1" style="background-color:#4bacc6; color:white; width:499px" %)
415 415  |(% style="width:496px" %)(((
416 -**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**
417 417  
418 418  **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
419 419  
... ... @@ -499,15 +499,11 @@
499 499  Final Payload is (% style="color:#4f81bd" %)**PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
500 500  
501 501  
502 -~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
503 503  
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 -
511 511  (% 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" %)​
512 512  
513 513  
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573 573  == 3.4 Uplink Payload ==
574 574  
575 575  
576 -(% border="1" cellspacing="5" style="background-color:#ffffcc; color:green; width:500px" %)
577 -|=(% scope="row" style="width: 60px;" %)(((
589 +(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:520px" %)
590 +|(% style="width:90px" %)(((
578 578  Size(bytes)
579 -)))|(% style="width:80px" %)1|(% style="width:360px" %)(((
592 +)))|(% style="width:114px" %)1|(% style="width:353px" %)(((
580 580  Length depends on the return from the commands
581 581  )))
582 -|=(% style="width: 90px;" %)(((
595 +|(% style="width:90px" %)(((
583 583  Value
584 584  )))|(% style="width:114px" %)(((
585 585  PAYLOAD_VER
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1191 1191  )))
1192 1192  
1193 1193  
1194 -
1195 -
1196 1196  ==== (% style="color:blue" %)**Configure Databit (Since Version 1.4.0)**(%%) ====
1197 1197  
1198 -
1199 1199  * (((
1200 1200  (% style="color:#037691" %)** AT Command:**
1201 1201  )))
1202 1202  
1203 -(% style="color:#4472c4" %)** AT+DATABIT=7    **(%%)~/~/ Set the data bits to 7
1213 +**~ AT+DATABIT=7  **~/~/ Set the data bits to 7
1204 1204  
1205 -(% style="color:#4472c4" %)** AT+DATABIT=8    **(%%)~/~/ Set the data bits to 8
1215 +**~ AT+DATABIT=8  **~/~/ Set the data bits to 8
1206 1206  
1207 1207  * (((
1208 1208  (% style="color:#037691" %)**Downlink Payload:**
1209 1209  )))
1210 1210  
1211 -(% style="color:#4472c4" %)** A7 04 07**(%%): Same as  AT+DATABIT=7
1221 +**~ A7 04 07**: Same as  AT+DATABIT=7
1212 1212  
1213 -(% style="color:#4472c4" %)** A7 04 08**(%%): Same as  AT+DATABIT=8
1223 +**~ A7 04 08**: Same as  AT+DATABIT=8
1214 1214  
1215 1215  
1216 1216  
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1459 1459  
1460 1460  
1461 1461  (% border="1.5" cellspacing="4" style="background-color:#ffffcc; width:430px" %)
1462 -|=(% style="width: 50px;" %)**Button**|=(% style="width: 380px;" %)**Feature**
1472 +|=(% style="width: 50px;" %)**Button**|=(% style="width: 361px;" %)**Feature**
1463 1463  |(% 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**
1464 1464  |(% style="width:50px" %)**RST**|(% style="width:361px" %)Reboot RS485
1465 1465  |(% style="width:50px" %)**PRO**|(% style="width:361px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1466 1466  
1467 1467  
1478 +
1468 1468  == 3.8 LEDs ==
1469 1469  
1470 1470  
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1474 1474  |**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.
1475 1475  
1476 1476  
1488 +
1477 1477  = 4. Case Study =
1478 1478  
1479 1479  
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1672 1672  == 6.5 Can i use point to point communication for RS485-LN? ==
1673 1673  
1674 1674  
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]].
1687 +Yes, please refer [[Point to Point Communication for RS485-LN>>Point to Point Communication for RS485-LN]].
1676 1676  
1677 1677  
1678 1678  
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1682 1682  [[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/]]
1683 1683  
1684 1684  
1685 -== 6.7 How to judge whether there is a problem with the set COMMAND ==
1686 1686  
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 -
1785 1785  = 7. Trouble Shooting =
1786 1786  
1787 1787  
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1818 1818  * (% style="color:red" %)**KZ865**(%%):  frequency bands KZ865
1819 1819  
1820 1820  
1734 +
1821 1821  = 9.Packing Info =
1822 1822  
1823 1823  
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1835 1835  * Weight / pcs : 170g
1836 1836  
1837 1837  
1752 +
1838 1838  = 10. FCC Caution for RS485LN-US915 =
1839 1839  
1840 1840  
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