Last modified by Bei Jinggeng on 2025/01/16 11:36
<
From version < 80.2 >
edited by Xiaoling
on 2022/10/29 10:36
To version < 100.1 >
edited by Bei Jinggeng
on 2023/01/06 14:27
>
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Summary

Details

Page properties
Author
... ... @@ -1,1 +1,1 @@
1 -XWiki.Xiaoling
1 +XWiki.Bei
Content
... ... @@ -28,9 +28,8 @@
28 28  
29 29  
30 30  
31 -= 1.Introduction =
31 += 1. Introduction =
32 32  
33 -
34 34  == 1.1 What is RS485-LN RS485 to LoRaWAN Converter ==
35 35  
36 36  
... ... @@ -58,13 +58,12 @@
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  
61 -
62 62  == 1.2 Specifications ==
63 63  
64 64  
65 65  (% style="color:#037691" %)**Hardware System:**
66 66  
67 -* STM32L072CZT6 MCU
65 +* STM32L072xxxx MCU
68 68  * SX1276/78 Wireless Chip 
69 69  * Power Consumption (exclude RS485 device):
70 70  ** Idle: 32mA@12v
... ... @@ -97,8 +97,6 @@
97 97  * Packet engine up to 256 bytes with CRC
98 98  
99 99  
100 -
101 -
102 102  == 1.3 Features ==
103 103  
104 104  
... ... @@ -112,8 +112,6 @@
112 112  * Support Interrupt uplink (Since hardware version v1.2)
113 113  
114 114  
115 -
116 -
117 117  == 1.4 Applications ==
118 118  
119 119  
... ... @@ -125,8 +125,6 @@
125 125  * Smart Factory
126 126  
127 127  
128 -
129 -
130 130  == 1.5 Firmware Change log ==
131 131  
132 132  
... ... @@ -147,7 +147,6 @@
147 147  v1.0: Release
148 148  )))
149 149  
150 -
151 151  
152 152  )))
153 153  )))
... ... @@ -167,13 +167,11 @@
167 167  
168 168  (% aria-label="1653268091319-405.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1653268091319-405.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" %)​
169 169  
170 -
171 171  
172 172  )))
173 173  
174 174  = 3. Operation Mode =
175 175  
176 -
177 177  == 3.1 How it works? ==
178 178  
179 179  
... ... @@ -182,7 +182,6 @@
182 182  The RS485-LN is configured as LoRaWAN OTAA Class C mode by default. It has OTAA keys to join network. To connect a local LoRaWAN network, user just need to input the OTAA keys in the network server and power on the RS485-LN. It will auto join the network via OTAA.
183 183  )))
184 184  
185 -
186 186  
187 187  )))
188 188  
... ... @@ -271,7 +271,6 @@
271 271  (% aria-label="1652953568895-172.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1652953568895-172.png||data-widget="image" height="232" 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" %)​
272 272  
273 273  
274 -
275 275  == 3.3 Configure Commands to read data ==
276 276  
277 277  
... ... @@ -289,7 +289,6 @@
289 289  (% style="color:red" %)**Note: below description and commands are for firmware version >v1.1, if you have firmware version v1.0. Please check the [[user manual v1.0>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/&file=RS485-LN_UserManual_v1.0.1.pdf]] or upgrade the firmware to v1.1**
290 290  )))
291 291  
292 -
293 293  
294 294  )))
295 295  )))
... ... @@ -359,8 +359,6 @@
359 359  )))
360 360  
361 361  
362 -
363 -
364 364  === 3.3.2 Configure sensors ===
365 365  
366 366  
... ... @@ -389,8 +389,6 @@
389 389  )))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
390 390  
391 391  
392 -
393 -
394 394  === 3.3.3 Configure read commands for each sampling ===
395 395  
396 396  
... ... @@ -465,7 +465,6 @@
465 465  
466 466  (% aria-label="image-20220602153621-3.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602153621-3.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" %)​
467 467  
468 -
469 469  
470 470  )))
471 471  
... ... @@ -554,7 +554,6 @@
554 554  (% aria-label="1654157178836-407.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654157178836-407.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" %)​
555 555  
556 556  
557 -
558 558  === 3.3.5 Uplink on demand ===
559 559  
560 560  
... ... @@ -567,7 +567,6 @@
567 567  (% style="color:#4472c4" %)** 0xA8 command**(%%): Send a command to RS485-LN and uplink the output from sensors.
568 568  
569 569  
570 -
571 571  === 3.3.6 Uplink on Interrupt ===
572 572  
573 573  
... ... @@ -579,7 +579,6 @@
579 579  Connect the Interrupt pin to RS485-LN INT port and connect the GND pin to V- port. When there is a high voltage (Max 24v) on INT pin. Device will send an uplink packet.
580 580  
581 581  
582 -
583 583  == 3.4 Uplink Payload ==
584 584  
585 585  
... ... @@ -608,7 +608,6 @@
608 608  Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
609 609  
610 610  
611 -
612 612  == 3.5 Configure RS485-LN via AT or Downlink ==
613 613  
614 614  
... ... @@ -633,7 +633,6 @@
633 633  )))
634 634  
635 635  
636 -
637 637  === 3.5.1 Common Commands ===
638 638  
639 639  
... ... @@ -640,7 +640,6 @@
640 640  They should be available for each of Dragino Sensors, such as: change uplink interval, reset device. For firmware v1.3, user can find what common commands it supports: [[End Device AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
641 641  
642 642  
643 -
644 644  === 3.5.2 Downlink Response(Since firmware v1.4) ===
645 645  
646 646  
... ... @@ -654,12 +654,10 @@
654 654  The first byte of this package represents whether the configuration is successful, 00 represents failure, 01 represents success. Except for the first byte, the other is the previous downlink. (All commands except A8 type commands are applicable)
655 655  
656 656  
657 -
658 658  === 3.5.3 Sensor related commands ===
659 659  
660 660  
661 661  
662 -
663 663  ==== (% style="color:blue" %)**RS485 Debug Command**(%%) ====
664 664  
665 665  
... ... @@ -782,7 +782,6 @@
782 782  
783 783  
784 784  
785 -
786 786  ==== (% style="color:blue" %)**Set Payload version**(%%) ====
787 787  
788 788  
... ... @@ -825,7 +825,6 @@
825 825  
826 826  
827 827  
828 -
829 829  ==== (% style="color:blue" %)**Set RS485 Sampling Commands**(%%) ====
830 830  
831 831  
... ... @@ -910,7 +910,6 @@
910 910  
911 911  
912 912  
913 -
914 914  ==== (% style="color:blue" %)**Fast command to handle MODBUS device**(%%) ====
915 915  
916 916  
... ... @@ -954,7 +954,6 @@
954 954  
955 955  
956 956  
957 -
958 958  ==== (% style="color:blue" %)**RS485 command timeout**(%%) ====
959 959  
960 960  
... ... @@ -991,7 +991,7 @@
991 991  )))
992 992  
993 993  (((
994 -(% style="color:#4472c4" %)** 0x AA aa bb cc**(%%) Same as: AT+CMDDLaa=hex(bb cc)*1000
963 +(% style="color:#4472c4" %)** 0x AA aa bb cc**(%%) Same as: AT+CMDDLaa=hex (bb cc)
995 995  )))
996 996  
997 997  (((
... ... @@ -1001,12 +1001,11 @@
1001 1001  )))
1002 1002  
1003 1003  (((
1004 -**0xAA 01 00 01**  ~-~-> Same as  **AT+CMDDL1=1000 ms**
973 +**0xAA 01 03 E8**  ~-~-> Same as  **AT+CMDDL1=1000 ms**
1005 1005  )))
1006 1006  
1007 1007  
1008 1008  
1009 -
1010 1010  ==== (% style="color:blue" %)**Uplink payload mode**(%%) ====
1011 1011  
1012 1012  
... ... @@ -1061,7 +1061,6 @@
1061 1061  
1062 1062  
1063 1063  
1064 -
1065 1065  ==== (% style="color:blue" %)**Manually trigger an Uplink**(%%) ====
1066 1066  
1067 1067  
... ... @@ -1091,7 +1091,6 @@
1091 1091  
1092 1092  
1093 1093  
1094 -
1095 1095  ==== (% style="color:blue" %)**Clear RS485 Command**(%%) ====
1096 1096  
1097 1097  
... ... @@ -1140,7 +1140,6 @@
1140 1140  
1141 1141  
1142 1142  
1143 -
1144 1144  ==== (% style="color:blue" %)**Set Serial Communication Parameters**(%%) ====
1145 1145  
1146 1146  
... ... @@ -1240,7 +1240,6 @@
1240 1240  
1241 1241  
1242 1242  
1243 -
1244 1244  ==== (% style="color:blue" %)**Get sensor value**(%%) ====
1245 1245  
1246 1246  
... ... @@ -1254,7 +1254,6 @@
1254 1254  
1255 1255  
1256 1256  
1257 -
1258 1258  ==== (% style="color:blue" %)**Resets the downlink packet count**(%%) ====
1259 1259  
1260 1260  
... ... @@ -1268,7 +1268,6 @@
1268 1268  
1269 1269  
1270 1270  
1271 -
1272 1272  ==== (% style="color:blue" %)**When the limit bytes are exceeded, upload in batches**(%%) ====
1273 1273  
1274 1274  
... ... @@ -1289,10 +1289,9 @@
1289 1289  
1290 1290  
1291 1291  
1254 +==== (% style="color:blue" %)**Copy downlink to uplink **(%%) ====
1292 1292  
1293 -==== (% style="color:blue" %)** Copy downlink to uplink **(%%) ====
1294 1294  
1295 -
1296 1296  * (((
1297 1297  (% style="color:#037691" %)** AT Command:**
1298 1298  )))
... ... @@ -1314,7 +1314,6 @@
1314 1314  
1315 1315  
1316 1316  
1317 -
1318 1318  ==== (% style="color:blue" %)**Query version number and frequency band 、TDC**(%%) ====
1319 1319  
1320 1320  
... ... @@ -1332,7 +1332,6 @@
1332 1332  
1333 1333  
1334 1334  
1335 -
1336 1336  ==== (% style="color:blue" %)** Monitor RS485 communication of other devices**(%%) ====
1337 1337  
1338 1338  
... ... @@ -1356,7 +1356,6 @@
1356 1356  [[image:image-20220824144240-1.png]]
1357 1357  
1358 1358  
1359 -
1360 1360  == 3.6 Listening mode for RS485 network ==
1361 1361  
1362 1362  
... ... @@ -1436,15 +1436,15 @@
1436 1436  )))
1437 1437  
1438 1438  (((
1439 -The Modbus master send a command: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b
1397 +The Modbus master send a command: (% style="background-color:#ffc000" %)**01 03 00 00 00 02 c4 0b**
1440 1440  )))
1441 1441  
1442 1442  (((
1443 -And Modbus slave reply with: (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
1401 +And Modbus slave reply with: (% style="background-color:green" %)**01 03 04 00 00 00 00 fa 33**
1444 1444  )))
1445 1445  
1446 1446  (((
1447 -RS485-LN will capture both and send the uplink: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b  (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
1405 +RS485-LN will capture both and send the uplink: (% style="background-color:#ffc000" %)**01 03 00 00 00 02 c4 0b  **(% style="background-color:green" %)**01 03 04 00 00 00 00 fa 33**
1448 1448  
1449 1449  
1450 1450  )))
... ... @@ -1464,7 +1464,6 @@
1464 1464  )))
1465 1465  
1466 1466  
1467 -
1468 1468  == 3.7 Buttons ==
1469 1469  
1470 1470  
... ... @@ -1475,8 +1475,6 @@
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 -
1480 1480  == 3.8 LEDs ==
1481 1481  
1482 1482  
... ... @@ -1486,8 +1486,6 @@
1486 1486  |**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.
1487 1487  
1488 1488  
1489 -
1490 -
1491 1491  = 4. Case Study =
1492 1492  
1493 1493  
... ... @@ -1494,10 +1494,8 @@
1494 1494  User can check this URL for some case studies: [[APP RS485 COMMUNICATE WITH SENSORS>>doc:Main.Application Note \: Communicate with Different Sensors ----- RS485-LN RS485-BL.WebHome]]
1495 1495  
1496 1496  
1497 -
1498 1498  = 5. Use AT Command =
1499 1499  
1500 -
1501 1501  == 5.1 Access AT Command ==
1502 1502  
1503 1503  
... ... @@ -1525,10 +1525,8 @@
1525 1525  )))
1526 1526  
1527 1527  
1528 -
1529 1529  == 5.2 Common AT Command Sequence ==
1530 1530  
1531 -
1532 1532  === 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1533 1533  
1534 1534  
... ... @@ -1545,8 +1545,6 @@
1545 1545  
1546 1546  * (% style="color:#037691" %)**AT+NJM=0**
1547 1547  * (% style="color:#037691" %)**ATZ**
1548 -
1549 -
1550 1550  )))
1551 1551  
1552 1552  
... ... @@ -1589,10 +1589,8 @@
1589 1589  (% aria-label="1654162478620-421.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654162478620-421.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" %)​
1590 1590  
1591 1591  
1592 -
1593 1593  = 6. FAQ =
1594 1594  
1595 -
1596 1596  == 6.1 How to upgrade the image? ==
1597 1597  
1598 1598  
... ... @@ -1659,7 +1659,6 @@
1659 1659  (% aria-label="image-20220602175638-10.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602175638-10.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" %)​
1660 1660  
1661 1661  
1662 -
1663 1663  == 6.2 How to change the LoRa Frequency Bands/Region? ==
1664 1664  
1665 1665  
... ... @@ -1666,7 +1666,6 @@
1666 1666  User can follow the introduction for [[how to upgrade image>>||anchor="H6.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
1667 1667  
1668 1668  
1669 -
1670 1670  == 6.3 How many RS485-Slave can RS485-LN connects? ==
1671 1671  
1672 1672  
... ... @@ -1673,7 +1673,6 @@
1673 1673  The RS485-LN can support max 32 RS485 devices. Each uplink command of RS485-LN can support max 16 different RS485 command. So RS485-LN can support max 16 RS485 devices pre-program in the device for uplink. For other devices no pre-program, user can use the [[downlink message (type code 0xA8) to poll their info>>||anchor="H3.3.3Configurereadcommandsforeachsampling"]].
1674 1674  
1675 1675  
1676 -
1677 1677  == 6.4 Compatible question to ChirpStack and TTI LoRaWAN server ? ==
1678 1678  
1679 1679  
... ... @@ -1682,7 +1682,6 @@
1682 1682  Detail info check this link: [[Set Packet Receiving Response Level>>doc:Main.End Device AT Commands and Downlink Command.WebHome||anchor="H7.23SetPacketReceivingResponseLevel"]]
1683 1683  
1684 1684  
1685 -
1686 1686  == 6.5 Can i use point to point communication for RS485-LN? ==
1687 1687  
1688 1688  
... ... @@ -1689,7 +1689,6 @@
1689 1689  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]].
1690 1690  
1691 1691  
1692 -
1693 1693  == 6.6 How to Use RS485-LN  to connect to RS232 devices? ==
1694 1694  
1695 1695  
... ... @@ -1696,10 +1696,123 @@
1696 1696  [[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/]]
1697 1697  
1698 1698  
1639 +== 6.7 How to judge whether there is a problem with the set COMMAND ==
1699 1699  
1700 -= 7. Trouble Shooting =
1641 +=== 6.7.1 Introduce: ===
1701 1701  
1702 1702  
1644 +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:
1645 +
1646 +1. Test if Modbus-MTU works with PC commands.
1647 +1. Check if RS485-LN sent the expected command to Mobus-MTU
1648 +1. Check if Modbus-MTU return back the expected result to RS485-LN.
1649 +1. If both b) and c) has issue, we can compare PC’s output and RS485-LN output.
1650 +
1651 +[[image:image-20221130104310-1.png||height="380" width="680"]]
1652 +
1653 +
1654 +Example Connection:
1655 +
1656 +[[image:image-20221130104310-2.png]]
1657 +
1658 +
1659 +=== 6.7.2 Set up PC to monitor RS485 network With Serial tool ===
1660 +
1661 +
1662 +(% style="color:red" %)**Note: Receive and send set to hex mode**
1663 +
1664 +[[image:image-20221130104310-3.png||height="616" width="714"]]
1665 +
1666 +
1667 +=== 6.7.3 With ModRSsim2: ===
1668 +
1669 +
1670 +(% style="color:blue" %)**(1) Select serial port MODBUS RS-232**
1671 +
1672 +[[image:image-20221130104310-4.png||height="390" width="865"]]
1673 +
1674 +
1675 +(% style="color:blue" %)**(2) Click the serial port icon**
1676 +
1677 +[[image:image-20221130104310-5.png||height="392" width="870"]]
1678 +
1679 +
1680 +(% style="color:blue" %)**(3) After selecting the correct serial port and baud rate, click ok**
1681 +
1682 +[[image:image-20221130104310-6.png]]
1683 +
1684 +
1685 +(% style="color:blue" %)**(4) Click the comms.**
1686 +
1687 +[[image:image-20221130104310-7.png||height="376" width="835"]]
1688 +
1689 +(% class="wikigeneratedid" id="HRunRS485-LN2FBLcommandandmonitorifitiscorrect." %)
1690 +**Run RS485-LN/BL command and monitor if it is correct.**
1691 +
1692 +
1693 +=== 6.7.4 Example – Test the CFGDEV command ===
1694 +
1695 +
1696 +RS485-LN sent below command:
1697 +
1698 +(% style="color:blue" %)**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.
1699 +
1700 +
1701 +We can see the output from the Serial port tool to analyze. And check if they are expected result.
1702 +
1703 +[[image:image-20221130104310-8.png||height="214" width="797"]]
1704 +
1705 +
1706 +We can also use (% style="color:blue" %)**ModRSsim2**(%%) to see the output.
1707 +
1708 +[[image:image-20221130104310-9.png||height="531" width="729"]]
1709 +
1710 +
1711 +=== 6.7.5 Example – Test CMD command sets. ===
1712 +
1713 +
1714 +Run (% style="color:blue" %)**AT+SENSORVALUE=1**(%%) to test the CMD commands set in RS485-LN.
1715 +
1716 +
1717 +(% style="color:blue" %)**Serial port tool:**
1718 +
1719 +[[image:image-20221130104310-10.png||height="339" width="844"]]
1720 +
1721 +
1722 +(% style="color:blue" %)**ModRSsim2:**
1723 +
1724 +[[image:image-20221130104310-11.png||height="281" width="962"]]
1725 +
1726 +
1727 +=== 6.7.6 Test with PC ===
1728 +
1729 +
1730 +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.
1731 +
1732 +
1733 +Or User can send the working commands set in PC serial tool to Dragino Support to check what should be configured in RS485-LN.
1734 +
1735 +(% style="color:blue" %)**Connection method：**
1736 +
1737 +[[image:image-20221130104310-12.png]]
1738 +
1739 +
1740 +(% style="color:blue" %)**Link situation:**
1741 +
1742 +[[image:image-20221130104310-13.png||height="458" width="486"]]
1743 +
1744 +
1745 +[[image:image-20221130104310-14.png||height="371" width="823"]]
1746 +
1747 +
1748 +== 6.8 Where to get the decoder for RS485-LN? ==
1749 +
1750 +
1751 +The decoder for RS485-LN needs to be written by yourself. Because the sensor to which the user is connected is custom, the read device data bytes also need custom parsing, so there is no universal decoder. We can only provide [[templates>>https://github.com/dragino/dragino-end-node-decoder/tree/main/RS485-LN]] for decoders (no intermediate data parsing part involved)
1752 +
1753 +
1754 += 7. Trouble Shooting =
1755 +
1703 1703  == 7.1 Downlink doesn't work, how to solve it? ==
1704 1704  
1705 1705  
... ... @@ -1706,7 +1706,6 @@
1706 1706  Please see this link for debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome]]
1707 1707  
1708 1708  
1709 -
1710 1710  == 7.2 Why I can't join TTN V3 in US915 /AU915 bands? ==
1711 1711  
1712 1712  
... ... @@ -1713,7 +1713,6 @@
1713 1713  It might about the channels mapping. Please see for detail: [[Notice of Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1714 1714  
1715 1715  
1716 -
1717 1717  = 8. Order Info =
1718 1718  
1719 1719  
... ... @@ -1733,11 +1733,9 @@
1733 1733  * (% style="color:red" %)**KZ865**(%%):  frequency bands KZ865
1734 1734  
1735 1735  
1787 += 9. Packing Info =
1736 1736  
1737 1737  
1738 -= 9.Packing Info =
1739 -
1740 -
1741 1741  **Package Includes**:
1742 1742  
1743 1743  * RS485-LN x 1
... ... @@ -1752,8 +1752,6 @@
1752 1752  * Weight / pcs : 170g
1753 1753  
1754 1754  
1755 -
1756 -
1757 1757  = 10. FCC Caution for RS485LN-US915 =
1758 1758  
1759 1759  
... ... @@ -1806,7 +1806,6 @@
1806 1806  )))
1807 1807  
1808 1808  
1809 -
1810 1810  = 11. Support =
1811 1811  
1812 1812  
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