Last modified by Bei Jinggeng on 2025/01/10 15:06
<
From version < 123.2 >
edited by Mengting Qiu
on 2024/09/25 17:36
To version < 107.1 >
edited by Bei Jinggeng
on 2023/11/27 14:28
>
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Summary

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Author
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1 -XWiki.ting
1 +XWiki.Bei
Content
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135 135  v1.0: Release
136 136  )))
137 137  
138 -
139 -== 1.7 Pin Definitions ==
140 -
141 -
142 -The following diagram shows the V1.2 hardware version.
143 -
144 -[[image:image-20240925161141-1.jpeg||height="412" width="405"]]
145 -
146 -[[image:image-20240925161157-2.jpeg||height="367" width="545"]]
147 -
148 148  
149 149  )))
150 150  )))
... ... @@ -255,6 +255,7 @@
255 255  (% aria-label="1652953553383-907.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1652953553383-907.png||data-widget="image" height="514" 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" %)​
256 256  
257 257  
248 +
258 258  (((
259 259  (% style="color:blue" %)**Step 2**(%%): Power on RS485-LN and it will auto join to the TTN V3 network. After join success, it will start to upload message to TTN V3 and user can see in the panel.
260 260  
... ... @@ -264,44 +264,38 @@
264 264  (% 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" %)​
265 265  
266 266  
267 -== 3.3 Configure Device to Read RS485 Sensors ==
258 +== 3.3 Configure Commands to read data ==
268 268  
269 269  
270 -There are plenty of RS485 and TTL level devices in the market and each device has different commands to read the valid data. To support these devices in most flexible, RS485-LN supports flexible command set. User can use [[Dragino RS485 Tool>>url:https://www.dropbox.com/sh/us9qecn39fwt8n1/AABREdqUCzEmJMRrfuWuXasoa?dl=0]],  [[AT Commands or LoRaWAN Downlink>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LB_Waterproof_RS485UART_to_LoRaWAN_Converter/#H3.5ConfigureRS485-LBviaATorDownlink]] Command to configure how RS485-LN should read the sensor and how to handle the return from RS485 or TTL sensors.
261 +(((
262 +(((
263 +(((
264 +There are plenty of RS485 devices in the market and each device has different command to read the valid data. To support these devices in flexible, RS485-LN supports flexible command set. User can use [[AT Commands>>||anchor="H3.5ConfigureRS485-LNviaATorDownlink"]] or LoRaWAN Downlink Command to configure what commands RS485-LN should send for each sampling and how to handle the return from RS485 devices.
271 271  
266 +
267 +)))
268 +)))
272 272  
273 273  (((
274 274  (((
275 -(((
276 276  (% 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**
277 277  )))
278 278  
279 -
280 -=== 3.3.1 Method 1 ~-~- via RS485 Configure Tool ===
281 -
282 -
283 -Use the RS485 Configure tool is the recommand method. Please see the instruction of how to use the tool:
284 -
285 -* **[[RS485 Configure Tool Instruction>>url:http://wiki.dragino.com/xwiki/bin/view/Main/RS485_Configure_Tool/]]**
286 -
287 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LB_Waterproof_RS485UART_to_LoRaWAN_Converter/WebHome/image-20231127144411-1.png?width=494&height=368&rev=1.1||alt="image-20231127144411-1.png" height="368" width="494"]]
288 -
289 -
290 -=== 3.3.2  Method 2 ~-~- via AT Commands ===
275 +
291 291  )))
292 292  )))
293 293  
294 -==== 3.3.2.1 Configure UART settings for RS485 communication ====
279 +=== 3.3.1 Configure UART settings for RS485 or TTL communication ===
295 295  
296 296  
297 -To use RS485-LN to read data from RS485 sensors, connect the RS485-LN A/B traces to the sensors. The related commands for UART settings are:
282 +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:
298 298  
299 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
300 -|=(% style="width: 126px; background-color:#4F81BD;color:white" %)(((
284 +(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
285 +|=(% style="width: 126px; background-color:#D9E2F3;color:#0070C0" %)(((
301 301  **AT Commands**
302 -)))|=(% style="width: 187px; background-color:#4F81BD;color:white" %)(((
287 +)))|=(% style="width: 187px; background-color:#D9E2F3;color:#0070C0" %)(((
303 303  **Description**
304 -)))|=(% style="width: 197px;background-color:#4F81BD;color:white" %)(((
289 +)))|=(% style="width: 197px;background-color:#D9E2F3;color:#0070C0" %)(((
305 305  **Example**
306 306  )))
307 307  |(% style="width:126px" %)(((
... ... @@ -357,7 +357,7 @@
357 357  )))
358 358  )))
359 359  
360 -=== 3.3.3 Configure sensors ===
345 +=== 3.3.2 Configure sensors ===
361 361  
362 362  
363 363  (((
... ... @@ -364,8 +364,8 @@
364 364  Some sensors might need to configure before normal operation. User can configure such sensor via PC and RS485 adapter or through RS485-LN AT Commands (% style="color:#4f81bd" %)**AT+CFGDEV**(%%). Each (% style="color:#4f81bd" %)**AT+CFGDEV **(%%)equals to send a RS485 command to sensors. This command will only run when user input it and won't run during each sampling.
365 365  )))
366 366  
367 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
368 -|=(% style="width: 122px; background-color:#4F81BD;color:white" %)**AT Commands**|=(% style="width: 198px; background-color:#4F81BD;color:white" %)**Description**|=(% style="width: 190px;background-color:#4F81BD;color:white" %)**Example**
352 +(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
353 +|=(% style="width: 122px; background-color:#D9E2F3;color:#0070C0" %)**AT Commands**|=(% style="width: 198px; background-color:#D9E2F3;color:#0070C0" %)**Description**|=(% style="width: 190px;background-color:#D9E2F3;color:#0070C0" %)**Example**
369 369  |(% style="width:122px" %)AT+CFGDEV|(% style="width:196px" %)(((
370 370  (((
371 371  This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
... ... @@ -380,7 +380,7 @@
380 380  )))
381 381  )))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
382 382  
383 -=== 3.3.4 Configure read commands for each sampling ===
368 +=== 3.3.3 Configure read commands for each sampling ===
384 384  
385 385  
386 386  (((
... ... @@ -471,7 +471,7 @@
471 471  
472 472  )))
473 473  
474 -=== 3.3.5 Compose the uplink payload ===
459 +=== 3.3.4 Compose the uplink payload ===
475 475  
476 476  
477 477  (((
... ... @@ -556,7 +556,7 @@
556 556  (% 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" %)​
557 557  
558 558  
559 -=== 3.3.6 Uplink on demand ===
544 +=== 3.3.5 Uplink on demand ===
560 560  
561 561  
562 562  Except uplink periodically, RS485-LN is able to uplink on demand. The server send downlink command to RS485-LN and RS485 will uplink data base on the command.
... ... @@ -568,81 +568,27 @@
568 568  (% style="color:#4472c4" %)** 0xA8 command**(%%): Send a command to RS485-LN and uplink the output from sensors.
569 569  
570 570  
571 -=== 3.3.7 Uplink on Interrupt ===
556 +=== 3.3.6 Uplink on Interrupt ===
572 572  
573 573  
574 -
575 575  RS485-LN support external Interrupt uplink since hardware v1.2 release.
576 576  
577 -(% aria-label="1654157342174-798.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654157342174-798.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"]]
578 578  
562 +(% aria-label="1654157342174-798.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654157342174-798.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" %)​
579 579  
580 -==== 3.3.7.1 Set Interrupt Mode ====
564 +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.
581 581  
582 582  
583 -Before using the interrupt function of the **INT** pin, users can set the interrupt triggering mode as required.
584 -
585 -(% style="color:blue" %)**AT command:**
586 -
587 -* (% style="color:#037691" %)**AT+INTMOD **(%%) ~/~/ Set the trigger interrupt mode
588 -
589 -* (% style="color:#037691" %)**AT+INTMOD=0 **(%%) ~/~/ Disable Interrupt
590 -
591 -* (% style="color:#037691" %)**AT+INTMOD=1 **(%%) ~/~/ Trigger by rising and falling edge
592 -
593 -* (% style="color:#037691" %)**AT+INTMOD=2 **(%%) ~/~/ Trigger by falling edge **(default)**
594 -
595 -* (% style="color:#037691" %)**AT+INTMOD=3  **(%%) ~/~/ Trigger by rising edge
596 -
597 -(% style="color:blue" %)**Downlink Commands: **(% style="color:#037691" %)**0x06**
598 -
599 -Format: Command Code (0x06) followed by 3 bytes.
600 -
601 -Example1:  Downlink Payload: **06 00 00 01    **~/~/ AT+INTMOD=1
602 -
603 -Example2:  Downlink Payload: **06 00 00 03    **~/~/AT+INTMOD=3
604 -
605 -
606 -==== 3.3.7.2 Practical application ====
607 -
608 -
609 -The following uses the default interrupt triggering mode (% style="color:blue" %)**(AT+INTMOD=2)**(%%) as an example to show the interrupt function of (% style="color:blue" %)**INT**(%%):
610 -
611 -When a high voltage is given to the INT pin and then the level of the (% style="color:blue" %)**INT**(%%) pin changes from high to low, the interrupt is triggered by a falling edge and the RS485-LN sends an uplink data.
612 -
613 -(% style="color:red" %)**Note: The voltage ranges from 3.3V to 24V. Generally, it is recommended to use less than 12V.**
614 -
615 -**Example:**
616 -
617 -* Use a dry contact to connect the (% style="color:blue" %)**INT**(%%) pin and (% style="color:blue" %)**VIN+**(%%) pin of the RS485-LN.
618 -
619 -When the dry contact is closed, INT and VIN+ conduct and INT is high.
620 -
621 -Disconnecting the dry contact, the level of the INT pin changes from high to low, triggering an interrupt (triggered by the falling edge along the interrupt), and the RS485-LN sends an uplink data.
622 -
623 -[[image:image-20240925164510-3.jpeg||height="414" width="656"]]
624 -
625 -* Use a regulated power supply or a wet contact to connect the 485-LN to trigger the interruption.(This section uses a regulated power supply as an example.)
626 -
627 -The positive pole of the stabilized power supply is connected to the (% style="color:blue" %)**INT**(%%) pin of RS485-LN, and the negative pole of the stabilized power supply is connected to the (% style="color:blue" %)**VIN-**(%%) pin of RS485-LN.
628 -
629 -When the regulated power supply is operating, a high voltage is given to the INT pin and the INT level is high. When the regulated power supply is turned off, the level of the INT pin changes from
630 -
631 -high to low, at which time an interrupt is triggered (triggered along the falling edge), and the device will send an uplink data.
632 -
633 -[[image:image-20240925173243-4.jpeg||height="404" width="900"]]
634 -
635 -
636 636  == 3.4 Uplink Payload ==
637 637  
638 638  
639 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
640 -|(% style="background-color:#4f81bd; color:white; width:70px" %)(((
641 -**Size(bytes)**
642 -)))|(% style="background-color:#4f81bd; color:white; width:80px" %)**1**|(% style="background-color:#4f81bd; color:white; width:360px" %)(((
570 +(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
571 +|=(% scope="row" style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)(((
572 +Size(bytes)
573 +)))|(% style="background-color:#d9e2f3; color:#0070c0; width:80px" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0; width:360px" %)(((
643 643  **Length depends on the return from the commands**
644 644  )))
645 -|(% style="width:90px" %)(((
576 +|=(% style="width: 90px;" %)(((
646 646  Value
647 647  )))|(% style="width:114px" %)(((
648 648  PAYLOAD_VER
... ... @@ -654,9 +654,13 @@
654 654  provided in the LoRaWAN server.
655 655  )))
656 656  
657 -(% 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"]](%%)Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
588 +(% 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"]]
658 658  
590 +(% title="Click and drag to resize" %)​
659 659  
592 +Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
593 +
594 +
660 660  == 3.5 Configure RS485-LN via AT or Downlink ==
661 661  
662 662  
... ... @@ -801,21 +801,31 @@
801 801  )))
802 802  
803 803  (((
804 -(% style="color:blue" %)**Example 2:**  (%%)
739 +(% style="color:blue" %)**Example 2:**  (%%) ~-~-> Configure with requesting uplink and original downlink command (**YY=FF**)
805 805  )))
806 806  
807 807  (((
808 -Check TTL Sensor return:
743 +User in IoT server send a downlink command: (% style="color:#4f81bd" %)**A8 01 06 0A 08 00 04 00 01 YY**
809 809  )))
810 810  
811 811  (((
747 +
748 +)))
749 +
812 812  (((
813 -[[image:http://8.211.40.43/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/test/WebHome/1654132684752-193.png?rev=1.1||alt="1654132684752-193.png"]](% title="Click and drag to resize" %)​
751 +(((
752 +RS485-LN got this downlink command and send (% style="color:#4f81bd" %)**0A 08 00 04 00 01 **(%%)to Modbus network. One of the RS485 sensor in the network send back Modbus reply **0A 08 00 04 00 00**. RS485-LN get this reply and combine with the original downlink command and uplink. The uplink message is:  **A8** (% style="color:#4f81bd" %)**0A 08 00 04 00  **(% style="color:red" %)**01 06** ** **(% style="color:green" %)**0A 08 00 04 00 00**
814 814  )))
754 +
755 +
815 815  )))
816 816  
758 +(((
759 + (% aria-label="1654159460680-153.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654159460680-153.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" %)​
760 +)))
817 817  
818 818  
763 +
819 819  ==== (% style="color:blue" %)**Set Payload version**(%%) ====
820 820  
821 821  
... ... @@ -983,13 +983,8 @@
983 983  
984 984  (% aria-label="image-20220602165351-7.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602165351-7.png||data-widget="image"]](% title="Click and drag to resize" %)​
985 985  
986 -* (((
987 -(% style="color:#037691" %)**Downlink Command:**
988 -)))
989 989  
990 -**~ (% style="color:#4472c4" %)A9 aa(%%)** ~-~-> Same as AT+MBFUN=aa
991 991  
992 -
993 993  ==== (% style="color:blue" %)**RS485 command timeout**(%%) ====
994 994  
995 995  
... ... @@ -1441,10 +1441,12 @@
1441 1441  To enable the listening mode, use can run the command (% style="color:#4472c4" %)** AT+RXMODE**.
1442 1442  )))
1443 1443  
1444 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
1445 -|=(% style="width: 156px; background-color:#4F81BD;color:white" %)(((
1384 +
1385 +
1386 +(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
1387 +|=(% style="width: 156px; background-color:#D9E2F3;color:#0070C0" %)(((
1446 1446  **Command example**
1447 -)))|=(% style="width: 355px; background-color:#4F81BD;color:white" %)(((
1389 +)))|=(% style="width: 355px; background-color:#D9E2F3;color:#0070C0" %)(((
1448 1448  **Function**
1449 1449  )))
1450 1450  |(% style="width:156px" %)(((
... ... @@ -1523,7 +1523,7 @@
1523 1523  
1524 1524  
1525 1525  (% border="1.5" cellspacing="4" style="background-color:#f2f2f2; width:430px" %)
1526 -|=(% style="width: 50px;background-color:#4F81BD;color:white" %)**Button**|=(% style="width: 380px;background-color:#4F81BD;color:white" %)**Feature**
1468 +|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)**Button**|=(% style="width: 380px;background-color:#D9E2F3;color:#0070C0" %)**Feature**
1527 1527  |(% 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**
1528 1528  |(% style="width:50px" %)RST|(% style="width:361px" %)Reboot RS485
1529 1529  |(% style="width:50px" %)PRO|(% style="width:361px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
... ... @@ -1532,7 +1532,7 @@
1532 1532  
1533 1533  
1534 1534  (% border="1.5" cellspacing="4" style="background-color:#f2f2f2; width:430px" %)
1535 -|=(% style="width: 50px;background-color:#4F81BD;color:white" %)**LEDs**|=(% style="width: 380px;background-color:#4F81BD;color:white" %)**Feature**
1477 +|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)**LEDs**|=(% style="width: 380px;background-color:#D9E2F3;color:#0070C0" %)**Feature**
1536 1536  |PWR|Always on if there is power
1537 1537  |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.
1538 1538  
... ... @@ -1700,6 +1700,7 @@
1700 1700  [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Firmware%20Upgrade%20Instruction%20for%20STM32%20base%20products/#H4.2.FirmwareupgradeusingSTM32Cubeprogramer>>url:http://wiki.dragino.com/xwiki/bin/view/Main/Firmware%20Upgrade%20Instruction%20for%20STM32%20base%20products/#H4.2.FirmwareupgradeusingSTM32Cubeprogramer]]
1701 1701  
1702 1702  
1645 +
1703 1703  (% style="color:red" %)**Notice**: **In case user has lost the program cable. User can hand made one from a 3.5mm cable. The pin mapping is:**
1704 1704  
1705 1705  (% 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" %)​
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1749 1749  1. Check if Modbus-MTU return back the expected result to RS485-LN.
1750 1750  1. If both b) and c) has issue, we can compare PC’s output and RS485-LN output.
1751 1751  
1752 -[[image:image-20240816112950-1.png||height="382" width="731"]]
1695 +[[image:image-20221130104310-1.png||height="380" width="680"]]
1753 1753  
1754 1754  
1755 1755  Example Connection:
... ... @@ -1863,6 +1863,7 @@
1863 1863  [[RS485 Configure Tool - DRAGINO>>url:http://wiki.dragino.com/xwiki/bin/view/Main/RS485_Configure_Tool/#HTableofContentsFF1A]]
1864 1864  
1865 1865  
1809 +
1866 1866  = 7. Trouble Shooting =
1867 1867  
1868 1868  == 7.1 Downlink doesn't work, how to solve it? ==
... ... @@ -1871,36 +1871,12 @@
1871 1871  Please see this link for debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome]]
1872 1872  
1873 1873  
1874 -== 7.2 Why customers can't join TTN V3 in US915 /AU915 bands? ==
1818 +== 7.2 Why I can't join TTN V3 in US915 /AU915 bands? ==
1875 1875  
1876 1876  
1877 1877  It might about the channels mapping. Please see for detail: [[Notice of Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1878 1878  
1879 1879  
1880 -== 7.3 Why can't customers see the device's data in the server when the data is too long? ==
1881 -
1882 -This is due to the limitation of the lorawan protocol, and the fixed DR needs to be adjusted to improve this problem.
1883 -
1884 -Please refer to the following link for the number of bytes limited by different frequencies and different DRs in the lorawan protocol
1885 -
1886 -[[lora-alliance.org/wp-content/uploads/2021/05/RP002-1.0.3-FINAL-1.pdf>>url:https://lora-alliance.org/wp-content/uploads/2021/05/RP002-1.0.3-FINAL-1.pdf]]
1887 -
1888 -Example:
1889 -
1890 -[[image:image-20240620145456-1.png]]
1891 -
1892 -Please refer to the following command to fix DR
1893 -
1894 -AT+ADR=0
1895 -
1896 -AT+DR=3
1897 -
1898 -Downlink command:
1899 -
1900 -[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/#H7.4DataRate>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/#H7.4DataRate]]
1901 -
1902 -
1903 -
1904 1904  = 8. Order Info =
1905 1905  
1906 1906  
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