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<
From version < 61.3 >
edited by Xiaoling
on 2022/06/14 11:27
To version < 42.1 >
edited by Xiaoling
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Summary

Details

Page properties
Title
... ... @@ -1,1 +1,1 @@
1 -RS485-LN – RS485 to LoRaWAN Converter User Manual
1 +RS485-LN – RS485 to LoRaWAN Converter
Content
... ... @@ -3,20 +3,15 @@
3 3  
4 4  
5 5  
6 +**RS485-LN – RS485 to LoRaWAN Converter User Manual**
6 6  
7 7  
8 -
9 -
10 10  **Table of Contents:**
11 11  
12 -{{toc/}}
13 13  
14 14  
15 15  
16 16  
17 -
18 -
19 -
20 20  = 1.Introduction =
21 21  
22 22  == 1.1 What is RS485-LN RS485 to LoRaWAN Converter ==
... ... @@ -23,37 +23,23 @@
23 23  
24 24  (((
25 25  (((
26 -(((
27 -
28 -
29 29  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.
30 30  )))
31 -)))
32 32  
33 33  (((
34 -(((
35 35  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.
36 36  )))
37 -)))
38 38  
39 39  (((
40 -(((
41 41  (% 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.
42 42  )))
43 -)))
44 44  
45 45  (((
46 -(((
47 47  (% 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.
48 -)))
49 49  
50 -(((
51 51  (% 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]]
52 -
53 -
54 54  )))
55 55  )))
56 -)))
57 57  
58 58  [[image:1653267211009-519.png||height="419" width="724"]]
59 59  
... ... @@ -93,10 +93,9 @@
93 93  * Preamble detection.
94 94  * 127 dB Dynamic Range RSSI.
95 95  * Automatic RF Sense and CAD with ultra-fast AFC.
96 -* Packet engine up to 256 bytes with CRC
77 +* Packet engine up to 256 bytes with CRC.
97 97  
98 98  
99 -
100 100  == 1.3 Features ==
101 101  
102 102  * LoRaWAN Class A & Class C protocol (default Class C)
... ... @@ -109,7 +109,6 @@
109 109  * Support Interrupt uplink (Since hardware version v1.2)
110 110  
111 111  
112 -
113 113  == 1.4 Applications ==
114 114  
115 115  * Smart Buildings & Home Automation
... ... @@ -120,7 +120,6 @@
120 120  * Smart Factory
121 121  
122 122  
123 -
124 124  == 1.5 Firmware Change log ==
125 125  
126 126  [[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
... ... @@ -130,13 +130,9 @@
130 130  
131 131  (((
132 132  (((
133 -(((
134 134  v1.2: Add External Interrupt Pin.
135 -)))
136 136  
137 -(((
138 138  v1.0: Release
139 -)))
140 140  
141 141  
142 142  )))
... ... @@ -164,9 +164,7 @@
164 164  == 3.1 How it works? ==
165 165  
166 166  (((
167 -(((
168 168  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.
169 -)))
170 170  
171 171  
172 172  )))
... ... @@ -189,13 +189,12 @@
189 189  
190 190  [[image:1653268227651-549.png||height="592" width="720"]]
191 191  
192 -
193 193  (((
194 -The LG308 is already set to connect to [[TTN V3 network >>path:https://www.thethingsnetwork.org/]]. So what we need to now is only configure the TTN V3:
165 +The LG308 is already set to connect to [[TTN V3 network >>path:eu1.cloud.thethings.network/]]. So what we need to now is only configure the TTN V3:
195 195  )))
196 196  
197 197  (((
198 -(% style="color:blue" %)**Step 1**(%%): Create a device in TTN V3 with the OTAA keys from RS485-LN.
169 +**Step 1**: Create a device in TTN V3 with the OTAA keys from RS485-LN.
199 199  )))
200 200  
201 201  (((
... ... @@ -205,7 +205,6 @@
205 205  
206 206  [[image:1652953462722-299.png]]
207 207  
208 -
209 209  (((
210 210  (((
211 211  User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
... ... @@ -212,7 +212,7 @@
212 212  )))
213 213  
214 214  (((
215 -**Add APP EUI in the application.**
185 +Add APP EUI in the application.
216 216  )))
217 217  )))
218 218  
... ... @@ -228,15 +228,13 @@
228 228  
229 229  [[image:1652953542269-423.png||height="710" width="723"]]
230 230  
201 +Add APP KEY and DEV EUI
231 231  
232 -
233 -**Add APP KEY and DEV EUI**
234 -
235 235  [[image:1652953553383-907.png||height="514" width="724"]]
236 236  
237 237  
238 238  (((
239 -(% 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.
207 +**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.
240 240  )))
241 241  
242 242  [[image:1652953568895-172.png||height="232" width="724"]]
... ... @@ -246,15 +246,11 @@
246 246  
247 247  (((
248 248  (((
249 -(((
250 -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.
217 +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>>path:#AT_COMMAND]] or LoRaWAN Downlink Command to configure what commands RS485-LN should send for each sampling and how to handle the return from RS485 devices.
251 251  )))
252 -)))
253 253  
254 254  (((
255 -(((
256 256  (% 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
257 -)))
258 258  
259 259  
260 260  )))
... ... @@ -264,19 +264,19 @@
264 264  
265 265  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:
266 266  
267 -(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
268 -|=(% style="width: 110px;" %)(((
231 +(% border="1" style="background-color:#ffffcc; color:green; width:782px" %)
232 +|(% style="width:128px" %)(((
269 269  **AT Commands**
270 -)))|=(% style="width: 190px;" %)(((
234 +)))|(% style="width:305px" %)(((
271 271  **Description**
272 -)))|=(% style="width: 190px;" %)(((
236 +)))|(% style="width:346px" %)(((
273 273  **Example**
274 274  )))
275 -|(% style="width:110px" %)(((
239 +|(% style="width:128px" %)(((
276 276  AT+BAUDR
277 -)))|(% style="width:190px" %)(((
241 +)))|(% style="width:305px" %)(((
278 278  Set the baud rate (for RS485 connection). Default Value is: 9600.
279 -)))|(% style="width:190px" %)(((
243 +)))|(% style="width:346px" %)(((
280 280  (((
281 281  AT+BAUDR=9600
282 282  )))
... ... @@ -285,11 +285,11 @@
285 285  Options: (1200,2400,4800,14400,19200,115200)
286 286  )))
287 287  )))
288 -|(% style="width:110px" %)(((
252 +|(% style="width:128px" %)(((
289 289  AT+PARITY
290 -)))|(% style="width:190px" %)(((
254 +)))|(% style="width:305px" %)(((
291 291  Set UART parity (for RS485 connection)
292 -)))|(% style="width:190px" %)(((
256 +)))|(% style="width:346px" %)(((
293 293  (((
294 294  AT+PARITY=0
295 295  )))
... ... @@ -298,9 +298,9 @@
298 298  Option: 0: no parity, 1: odd parity, 2: even parity
299 299  )))
300 300  )))
301 -|(% style="width:110px" %)(((
265 +|(% style="width:128px" %)(((
302 302  AT+STOPBIT
303 -)))|(% style="width:190px" %)(((
267 +)))|(% style="width:305px" %)(((
304 304  (((
305 305  Set serial stopbit (for RS485 connection)
306 306  )))
... ... @@ -308,7 +308,7 @@
308 308  (((
309 309  
310 310  )))
311 -)))|(% style="width:190px" %)(((
275 +)))|(% style="width:346px" %)(((
312 312  (((
313 313  AT+STOPBIT=0 for 1bit
314 314  )))
... ... @@ -323,8 +323,6 @@
323 323  )))
324 324  
325 325  
326 -
327 -
328 328  === 3.3.2 Configure sensors ===
329 329  
330 330  (((
... ... @@ -333,25 +333,17 @@
333 333  )))
334 334  )))
335 335  
336 -(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
337 -|=(% style="width: 110px;" %)**AT Commands**|=(% style="width: 190px;" %)**Description**|=(% style="width: 190px;" %)**Example**
338 -|AT+CFGDEV|(% style="width:110px" %)(((
339 -(((
298 +(% border="1" style="background-color:#ffffcc; color:green; width:806px" %)
299 +|**AT Commands**|(% style="width:418px" %)**Description**|(% style="width:256px" %)**Example**
300 +|AT+CFGDEV|(% style="width:418px" %)(((
340 340  This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
341 -)))
342 342  
343 -(((
344 344  AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
345 -)))
346 346  
347 -(((
348 348  mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
349 -)))
350 -)))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
306 +)))|(% style="width:256px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
351 351  
352 352  
353 -
354 -
355 355  === 3.3.3 Configure read commands for each sampling ===
356 356  
357 357  (((
... ... @@ -364,7 +364,7 @@
364 364  During each sampling, the RS485-LN can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
365 365  
366 366  
367 -(% style="color:#037691" %)**Each RS485 commands include two parts:**
321 +**Each RS485 commands include two parts:**
368 368  
369 369  ~1. What commands RS485-LN will send to the RS485 sensors. There are total 15 commands from **AT+COMMAD1**, **ATCOMMAND2**,…, to **AT+COMMANDF**. All commands are of same grammar.
370 370  
... ... @@ -379,11 +379,11 @@
379 379  Below are examples for the how above AT Commands works.
380 380  
381 381  
382 -(% style="color:#037691" %)**AT+COMMANDx **(%%)**: **This command will be sent to RS485 devices during each sampling, Max command length is 14 bytes. The grammar is:
336 +**AT+COMMANDx : **This command will be sent to RS485 devices during each sampling, Max command length is 14 bytes. The grammar is:
383 383  
384 384  (% border="1" style="background-color:#4bacc6; color:white; width:499px" %)
385 385  |(% style="width:496px" %)(((
386 -(% style="color:#037691" %)**AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
340 +**AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
387 387  
388 388  **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
389 389  
... ... @@ -395,10 +395,10 @@
395 395  In the RS485-LN, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
396 396  
397 397  
398 -(% style="color:#037691" %)**AT+DATACUTx **(%%)**: **This command defines how to handle the return from AT+COMMANDx, max return length is 45 bytes.
352 +**AT+DATACUTx : **This command defines how to handle the return from AT+COMMANDx, max return length is 45 bytes.
399 399  
400 -(% border="1" style="background-color:#4bacc6; color:white; width:510px" %)
401 -|(% style="width:510px" %)(((
354 +(% border="1" style="background-color:#4bacc6; color:white; width:725px" %)
355 +|(% style="width:722px" %)(((
402 402  **AT+DATACUTx=a,b,c**
403 403  
404 404  * **a: length for the return of AT+COMMAND**
... ... @@ -408,21 +408,20 @@
408 408  
409 409  **Examples:**
410 410  
411 -* (% style="color:#037691" %)**Grab bytes**
365 +* Grab bytes:
412 412  
413 413  [[image:image-20220602153621-1.png]]
414 414  
415 415  
416 -* (% style="color:#037691" %)**Grab a section**
370 +* Grab a section.
417 417  
418 418  [[image:image-20220602153621-2.png]]
419 419  
420 420  
421 -* (% style="color:#037691" %)**Grab different sections**
375 +* Grab different sections.
422 422  
423 423  [[image:image-20220602153621-3.png]]
424 424  
425 -
426 426  
427 427  )))
428 428  
... ... @@ -468,7 +468,6 @@
468 468  
469 469  (% style="color:#4f81bd" %)**Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
470 470  
471 -
472 472  1. PAYVER: Defined by AT+PAYVER
473 473  1. PAYLOAD COUNT: Total how many uplinks of this sampling.
474 474  1. PAYLOAD#: Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
... ... @@ -525,33 +525,33 @@
525 525  
526 526  == 3.4 Uplink Payload ==
527 527  
480 +(% border="1" style="background-color:#4bacc6; color:white; width:734px" %)
481 +|**Size(bytes)**|(% style="width:120px" %)**2**|(% style="width:116px" %)**1**|(% style="width:386px" %)**Length depends on the return from the commands**
482 +|Value|(% style="width:120px" %)(((
483 +Battery(mV)
528 528  
529 -[[image:image-20220606110929-1.png]]
485 +&
530 530  
487 +Interrupt _Flag
488 +)))|(% style="width:116px" %)(((
489 +PAYLOAD_VER
490 +
491 +
492 +)))|(% style="width:386px" %)If the valid payload is too long and exceed the maximum support payload length in server, server will show payload not provided in the LoRaWAN server.
493 +
531 531  Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
532 532  
533 533  
534 -== 3.5 Configure RS485-LN via AT or Downlink ==
497 +== 3.5 Configure RS485-BL via AT or Downlink ==
535 535  
536 -(((
537 537  User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
538 -)))
539 539  
540 -(((
541 541  There are two kinds of Commands:
542 -)))
543 543  
544 -* (((
545 -(% style="color:#4f81bd" %)**Common Commands**(%%): They should be available for each sensor, such as: change uplink interval, reset device. For firmware v1.3, user can find what common commands it supports: [[AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
546 -)))
503 +* (% style="color:#4f81bd" %)**Common Commands**(%%): They should be available for each sensor, 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]]
547 547  
548 -* (((
549 -(% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-LN.  User can see these commands below:
550 -)))
505 +* (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-LN.  User can see these commands below:
551 551  
552 -(((
553 -
554 -)))
555 555  
556 556  
557 557  === 3.5.1 Common Commands ===
... ... @@ -568,941 +568,8 @@
568 568  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)
569 569  
570 570  
571 -=== 3.5.3 Sensor related commands ===
523 +3.5.3 Sensor related commands
572 572  
525 +==== ====
573 573  
574 -
575 -
576 -==== **RS485 Debug Command** ====
577 -
578 -(((
579 -This command is used to configure the RS485 devices; they won’t be used during sampling.
580 -)))
581 -
582 -* (((
583 -**AT Command**
584 -)))
585 -
586 -(% class="box infomessage" %)
587 -(((
588 -(((
589 -**AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m**
590 -)))
591 -)))
592 -
593 -(((
594 -m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
595 -)))
596 -
597 -* (((
598 -**Downlink Payload**
599 -)))
600 -
601 -(((
602 -Format: A8 MM NN XX XX XX XX YY
603 -)))
604 -
605 -(((
606 -Where:
607 -)))
608 -
609 -* (((
610 -MM: 1: add CRC-16/MODBUS ; 0: no CRC
611 -)))
612 -* (((
613 -NN: The length of RS485 command
614 -)))
615 -* (((
616 -XX XX XX XX: RS485 command total NN bytes
617 -)))
618 -* (((
619 -(((
620 -YY: How many bytes will be uplink from the return of this RS485 command,
621 -)))
622 -
623 -* (((
624 -if YY=0, RS485-LN will execute the downlink command without uplink;
625 -)))
626 -* (((
627 -if YY>0, RS485-LN will uplink total YY bytes from the output of this RS485 command; Fport=200
628 -)))
629 -* (((
630 -if YY=FF, RS485-LN will uplink RS485 output with the downlink command content; Fport=200.
631 -)))
632 -)))
633 -
634 -(((
635 -**Example 1** ~-~-> Configure without ask for uplink (YY=0)
636 -)))
637 -
638 -(((
639 -To connect a Modbus Alarm with below commands.
640 -)))
641 -
642 -* (((
643 -The command to active alarm is: 0A 05 00 04 00 01 4C B0. Where 0A 05 00 04 00 01 is the Modbus command to read the register 00 40 where stored the DI status. The 4C B0 is the CRC-16/MODBUS which calculate manually.
644 -)))
645 -
646 -* (((
647 -The command to deactivate alarm is: 0A 05 00 04 00 00 8D 70. Where 0A 05 00 04 00 00 is the Modbus command to read the register 00 40 where stored the DI status. The 8D 70 is the CRC-16/MODBUS which calculate manually.
648 -)))
649 -
650 -(((
651 -So if user want to use downlink command to control to RS485 Alarm, he can use:
652 -)))
653 -
654 -(((
655 -(% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 01 00**(%%): to activate the RS485 Alarm
656 -)))
657 -
658 -(((
659 -(% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
660 -)))
661 -
662 -(((
663 -A8 is type code and 01 means add CRC-16/MODBUS at the end, the 3^^rd^^ byte is 06, means the next 6 bytes are the command to be sent to the RS485 network, the final byte 00 means this command don’t need to acquire output.
664 -)))
665 -
666 -(((
667 -
668 -)))
669 -
670 -(((
671 -**Example 2** ~-~-> Configure with requesting uplink and original downlink command (**YY=FF**)
672 -)))
673 -
674 -(((
675 -User in IoT server send a downlink command: (% style="color:#4f81bd" %)**A8 01 06 0A 08 00 04 00 01 YY**
676 -)))
677 -
678 -(((
679 -
680 -)))
681 -
682 -(((
683 -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:
684 -)))
685 -
686 -(((
687 - **A8** (% style="color:#4f81bd" %)**0A 08 00 04 00  **(% style="color:red" %)**01 06** ** **(% style="color:green" %)**0A 08 00 04 00 00**
688 -)))
689 -
690 -(((
691 - [[image:1654159460680-153.png]]
692 -)))
693 -
694 -
695 -
696 -
697 -==== **Set Payload version** ====
698 -
699 -(((
700 -This is the first byte of the uplink payload. RS485-LN can connect to different sensors. User can set the PAYVER field to tell server how to decode the current payload.
701 -)))
702 -
703 -* (((
704 -**AT Command:**
705 -)))
706 -
707 -(% class="box infomessage" %)
708 -(((
709 -(((
710 -**AT+PAYVER: Set PAYVER field = 1**
711 -)))
712 -)))
713 -
714 -* (((
715 -**Downlink Payload:**
716 -)))
717 -
718 -(((
719 -**0xAE 01**  ~-~-> Set PAYVER field =  0x01
720 -)))
721 -
722 -(((
723 -**0xAE 0F**   ~-~-> Set PAYVER field =  0x0F
724 -)))
725 -
726 -
727 -
728 -
729 -==== **Set RS485 Sampling Commands** ====
730 -
731 -(((
732 -AT+COMMANDx or AT+DATACUTx
733 -)))
734 -
735 -(((
736 -These three commands are used to configure how the RS485-LN polling data from Modbus device. Detail of usage please see : [[polling RS485 device>>||anchor="H3.3.3Configurereadcommandsforeachsampling"]].
737 -)))
738 -
739 -(((
740 -
741 -)))
742 -
743 -* (((
744 -**AT Command:**
745 -)))
746 -
747 -(% class="box infomessage" %)
748 -(((
749 -(((
750 -**AT+COMMANDx: Configure RS485 read command to sensor.**
751 -)))
752 -)))
753 -
754 -(% class="box infomessage" %)
755 -(((
756 -(((
757 -**AT+DATACUTx: Configure how to handle return from RS485 devices.**
758 -)))
759 -)))
760 -
761 -(((
762 -
763 -)))
764 -
765 -* (((
766 -**Downlink Payload:**
767 -)))
768 -
769 -(((
770 -**0xAF** downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
771 -)))
772 -
773 -(((
774 -(% style="color:red" %)**Note**(%%): if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
775 -)))
776 -
777 -(((
778 -Format: AF MM NN LL XX XX XX XX YY
779 -)))
780 -
781 -(((
782 -Where:
783 -)))
784 -
785 -* (((
786 -MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
787 -)))
788 -* (((
789 -NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
790 -)))
791 -* (((
792 -LL:  The length of AT+COMMAND or AT+DATACUT command
793 -)))
794 -* (((
795 -XX XX XX XX: AT+COMMAND or AT+DATACUT command
796 -)))
797 -* (((
798 -YY:  If YY=0, RS485-LN will execute the downlink command without uplink; if YY=1, RS485-LN will execute an uplink after got this command.
799 -)))
800 -
801 -(((
802 -**Example:**
803 -)))
804 -
805 -(((
806 -(% style="color:#037691" %)**AF 03 01 06 0A 05 00 04 00 01 00**(%%): Same as AT+COMMAND3=0A 05 00 04 00 01,1
807 -)))
808 -
809 -(((
810 -(% style="color:#037691" %)**AF 03 02 06**(% style="color:orange" %)** 10 **(% style="color:red" %)**01 **(% style="color:green" %)**05 06 09 0A**(% style="color:#037691" %)** 00**(%%): Same as AT+DATACUT3=(% style="color:orange" %)**16**(%%),(% style="color:red" %)**1**(%%),(% style="color:green" %)**5+6+9+10**
811 -)))
812 -
813 -(((
814 -(% style="color:#037691" %)**AF 03 02 06 **(% style="color:orange" %)**0B**(% style="color:red" %)** 02 **(% style="color:green" %)**05 07 08 0A **(% style="color:#037691" %)**00**(%%): Same as AT+DATACUT3=(% style="color:orange" %)**11**(%%),(% style="color:red" %)**2**(%%),(% style="color:green" %)**5~~7+8~~10**
815 -)))
816 -
817 -
818 -
819 -
820 -==== **Fast command to handle MODBUS device** ====
821 -
822 -(((
823 -AT+MBFUN is valid since v1.3 firmware version. The command is for fast configure to read Modbus devices. It is only valid for the devices which follow the [[MODBUS-RTU protocol>>url:https://www.modbustools.com/modbus.html]].
824 -)))
825 -
826 -(((
827 -This command is valid since v1.3 firmware version
828 -)))
829 -
830 -(((
831 -AT+MBFUN can auto read the Modbus function code: 01, 02, 03 or 04. AT+MBFUN has lower priority vs AT+DATACUT command. If AT+DATACUT command is configured, AT+MBFUN will be ignore.
832 -)))
833 -
834 -(((
835 -
836 -)))
837 -
838 -(((
839 -**Example:**
840 -)))
841 -
842 -* (((
843 -AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2 are not configure (0,0,0). So RS485-LN.
844 -)))
845 -* (((
846 -AT+COMMAND1= 01 03 00 10 00 08,1 ~-~-> read slave address 01 , function code 03, start address 00 01, quantity of registers 00 08.
847 -)))
848 -* (((
849 -AT+COMMAND2= 01 02 00 40 00 10,1 ~-~-> read slave address 01 , function code 02, start address 00 40, quantity of inputs 00 10.
850 -)))
851 -
852 -[[image:image-20220602165351-6.png]]
853 -
854 -[[image:image-20220602165351-7.png]]
855 -
856 -
857 -
858 -
859 -==== **RS485 command timeout** ====
860 -
861 -(((
862 -Some Modbus device has slow action to send replies. This command is used to configure the RS485-LN to use longer time to wait for their action.
863 -)))
864 -
865 -(((
866 -Default value: 0, range:  0 ~~ 65 seconds
867 -)))
868 -
869 -* (((
870 -**AT Command:**
871 -)))
872 -
873 -(% class="box infomessage" %)
874 -(((
875 -(((
876 -**AT+CMDDLaa=hex(bb cc)*1000**
877 -)))
878 -)))
879 -
880 -(((
881 -**Example:**
882 -)))
883 -
884 -(((
885 -**AT+CMDDL1=1000** to send the open time to 1000ms
886 -)))
887 -
888 -(((
889 -
890 -)))
891 -
892 -* (((
893 -**Downlink Payload:**
894 -)))
895 -
896 -(((
897 -**0x AA aa bb cc**
898 -)))
899 -
900 -(((
901 -Same as: AT+CMDDLaa=hex(bb cc)*1000
902 -)))
903 -
904 -(((
905 - **Example:**
906 -)))
907 -
908 -(((
909 - 0xAA 01 00 01  ~-~-> Same as **AT+CMDDL1=1000 ms**
910 -)))
911 -
912 -
913 -
914 -
915 -==== **Uplink payload mode** ====
916 -
917 -(((
918 -Define to use one uplink or multiple uplinks for the sampling.
919 -)))
920 -
921 -(((
922 -The use of this command please see: [[Compose Uplink payload>>||anchor="H3.3.4Composetheuplinkpayload"]]
923 -)))
924 -
925 -* (((
926 -**AT Command:**
927 -)))
928 -
929 -(% class="box infomessage" %)
930 -(((
931 -(((
932 -**AT+DATAUP=0**
933 -)))
934 -)))
935 -
936 -(% class="box infomessage" %)
937 -(((
938 -(((
939 -**AT+DATAUP=1**
940 -)))
941 -)))
942 -
943 -(((
944 -
945 -)))
946 -
947 -* (((
948 -**Downlink Payload:**
949 -)))
950 -
951 -(((
952 -**0xAD 00**  **~-~->** Same as AT+DATAUP=0
953 -)))
954 -
955 -(((
956 -**0xAD 01**  **~-~->** Same as AT+DATAUP=1
957 -)))
958 -
959 -
960 -
961 -
962 -==== **Manually trigger an Uplink** ====
963 -
964 -(((
965 -Ask device to send an uplink immediately.
966 -)))
967 -
968 -* (((
969 -**AT Command:**
970 -)))
971 -
972 -(((
973 -No AT Command for this, user can press the [[ACT button>>||anchor="H3.7Buttons"]] for 1 second for the same.
974 -)))
975 -
976 -(((
977 -
978 -)))
979 -
980 -* (((
981 -**Downlink Payload:**
982 -)))
983 -
984 -(((
985 -**0x08 FF**, RS485-LN will immediately send an uplink.
986 -)))
987 -
988 -
989 -
990 -
991 -==== **Clear RS485 Command** ====
992 -
993 -(((
994 -The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
995 -)))
996 -
997 -* (((
998 -**AT Command:**
999 -)))
1000 -
1001 -(((
1002 -**AT+CMDEAR=mm,nn**   mm: start position of erase ,nn: stop position of erase
1003 -)))
1004 -
1005 -(((
1006 -Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
1007 -)))
1008 -
1009 -(((
1010 -Example screen shot after clear all RS485 commands. 
1011 -)))
1012 -
1013 -(((
1014 -
1015 -)))
1016 -
1017 -(((
1018 -The uplink screen shot is:
1019 -)))
1020 -
1021 -[[image:1654160691922-496.png]]
1022 -
1023 -
1024 -* (((
1025 -**Downlink Payload:**
1026 -)))
1027 -
1028 -(((
1029 -**0x09 aa bb** same as AT+CMDEAR=aa,bb
1030 -)))
1031 -
1032 -
1033 -
1034 -
1035 -==== **Set Serial Communication Parameters** ====
1036 -
1037 -(((
1038 -Set the Rs485 serial communication parameters:
1039 -)))
1040 -
1041 -* (((
1042 -**AT Command:**
1043 -)))
1044 -
1045 -(((
1046 -Set Baud Rate:
1047 -)))
1048 -
1049 -(% class="box infomessage" %)
1050 -(((
1051 -(((
1052 -**AT+BAUDR=9600**    ~/~/ Options: (1200,2400,4800,14400,19200,115200)
1053 -)))
1054 -)))
1055 -
1056 -(((
1057 -Set UART Parity
1058 -)))
1059 -
1060 -(% class="box infomessage" %)
1061 -(((
1062 -(((
1063 -**AT+PARITY=0**    ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity
1064 -)))
1065 -)))
1066 -
1067 -(((
1068 -Set STOPBIT
1069 -)))
1070 -
1071 -(% class="box infomessage" %)
1072 -(((
1073 -(((
1074 -**AT+STOPBIT=0**    ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
1075 -)))
1076 -)))
1077 -
1078 -(((
1079 -
1080 -)))
1081 -
1082 -* (((
1083 -**Downlink Payload:**
1084 -)))
1085 -
1086 -(((
1087 -**A7 01 aa bb**: Same  AT+BAUDR=hex(aa bb)*100
1088 -)))
1089 -
1090 -(((
1091 -**Example:**
1092 -)))
1093 -
1094 -* (((
1095 -A7 01 00 60   same as AT+BAUDR=9600
1096 -)))
1097 -* (((
1098 -A7 01 04 80  same as AT+BAUDR=115200
1099 -)))
1100 -
1101 -(((
1102 -A7 02 aa: Same as  AT+PARITY=aa  (aa value: 00 , 01 or 02)
1103 -)))
1104 -
1105 -(((
1106 -A7 03 aa: Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
1107 -)))
1108 -
1109 -
1110 -
1111 -
1112 -== 3.6 Listening mode for RS485 network ==
1113 -
1114 -(((
1115 -This feature support since firmware v1.4
1116 -)))
1117 -
1118 -(((
1119 -RS485-LN supports listening mode, it can listen the RS485 network packets and send them via LoRaWAN uplink. Below is the structure. The blue arrow shows the RS485 network packets to RS485-LN.
1120 -)))
1121 -
1122 -[[image:image-20220602171200-8.png||height="567" width="1007"]]
1123 -
1124 -(((
1125 -To enable the listening mode, use can run the command AT+RXMODE.
1126 -)))
1127 -
1128 -(((
1129 -
1130 -)))
1131 -
1132 -(% border="1" cellspacing="10" style="background-color:#ffffcc; width:500px" %)
1133 -|=(% style="width: 100px;" %)(((
1134 -**Command example**
1135 -)))|=(% style="width: 400px;" %)(((
1136 -**Function**
1137 -)))
1138 -|(% style="width:100px" %)(((
1139 -AT+RXMODE=1,10
1140 -)))|(% style="width:400px" %)(((
1141 -Enable listening mode 1, if RS485-LN has received more than 10 RS485 commands from the network. RS485-LN will send these commands via LoRaWAN uplinks.
1142 -)))
1143 -|(% style="width:100px" %)(((
1144 -AT+RXMODE=2,500
1145 -)))|(% style="width:400px" %)(((
1146 -Enable listening mode 2, RS485-LN will capture and send a 500ms content once from the first detect of character. Max value is 65535 ms
1147 -)))
1148 -|(% style="width:100px" %)(((
1149 -AT+RXMODE=0,0
1150 -)))|(% style="width:400px" %)(((
1151 -Disable listening mode. This is the default settings.
1152 -)))
1153 -|(% style="width:100px" %)(((
1154 -
1155 -)))|(% style="width:400px" %)(((
1156 -A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
1157 -)))
1158 -
1159 -(((
1160 -**Downlink Command:**
1161 -)))
1162 -
1163 -(((
1164 -**0xA6 aa bb cc ** same as AT+RXMODE=aa,(bb<<8 | cc)
1165 -)))
1166 -
1167 -(((
1168 -
1169 -)))
1170 -
1171 -(((
1172 -**Example**:
1173 -)))
1174 -
1175 -(((
1176 -The RS485-LN is set to AT+RXMODE=2,1000
1177 -)))
1178 -
1179 -(((
1180 -There is a two Modbus commands in the RS485 network as below:
1181 -)))
1182 -
1183 -(((
1184 -The Modbus master send a command: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b
1185 -)))
1186 -
1187 -(((
1188 -And Modbus slave reply with: (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
1189 -)))
1190 -
1191 -(((
1192 -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
1193 -)))
1194 -
1195 -(((
1196 -[[image:image-20220602171200-9.png]]
1197 -)))
1198 -
1199 -(((
1200 -
1201 -)))
1202 -
1203 -(((
1204 -(((
1205 -(% style="color:red" %)Notice: Listening mode can work with the default polling mode of RS485-LN. When RS485-LN is in to send the RS485 commands (from AT+COMMANDx), the listening mode will be interrupt for a while.
1206 -)))
1207 -)))
1208 -
1209 -
1210 -== 3.7 Buttons ==
1211 -
1212 -
1213 -(% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1214 -|=(% style="width: 50px;" %)**Button**|=(% style="width: 361px;" %)**Feature**
1215 -|(% 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**
1216 -|(% style="width:50px" %)**RST**|(% style="width:361px" %)Reboot RS485
1217 -|(% style="width:50px" %)**PRO**|(% style="width:361px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1218 -
1219 -== 3.8 LEDs ==
1220 -
1221 -
1222 -(% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1223 -|=(% style="width: 50px;" %)**LEDs**|=(% style="width: 380px;" %)**Feature**
1224 -|**PWR**|Always on if there is power
1225 -|**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.
1226 -
1227 -= 4. Case Study =
1228 -
1229 -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]]
1230 -
1231 -
1232 -= 5. Use AT Command =
1233 -
1234 -== 5.1 Access AT Command ==
1235 -
1236 -(((
1237 -RS485-LN supports AT Command set. User can use a USB to TTL adapter plus the 3.5mm Program Cable to connect to RS485-LN to use AT command, as below.
1238 -)))
1239 -
1240 -[[image:1654162355560-817.png]]
1241 -
1242 -
1243 -(((
1244 -In PC, User needs to set (% style="color:blue" %)**serial tool**(%%)(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600**(%%) to access to access serial console of RS485-LN. The default password is 123456. Below is the output for reference:
1245 -)))
1246 -
1247 -[[image:1654162368066-342.png]]
1248 -
1249 -
1250 -(((
1251 -More detail AT Command manual can be found at [[AT Command Manual>>https://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/]]
1252 -)))
1253 -
1254 -
1255 -
1256 -== 5.2 Common AT Command Sequence ==
1257 -
1258 -=== 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1259 -
1260 -If device has not joined network yet:
1261 -
1262 -(% class="box infomessage" %)
1263 -(((
1264 -**AT+FDR**
1265 -)))
1266 -
1267 -(% class="box infomessage" %)
1268 -(((
1269 -**AT+NJM=0**
1270 -)))
1271 -
1272 -(% class="box infomessage" %)
1273 -(((
1274 -**ATZ**
1275 -)))
1276 -
1277 -
1278 -(((
1279 -If device already joined network:
1280 -)))
1281 -
1282 -(% class="box infomessage" %)
1283 -(((
1284 -**AT+NJM=0**
1285 -)))
1286 -
1287 -(% class="box infomessage" %)
1288 -(((
1289 -**ATZ**
1290 -)))
1291 -
1292 -
1293 -=== 5.5.2 Single-channel ABP mode (Use with LG01/LG02) ===
1294 -
1295 -
1296 -(% style="background-color:#dcdcdc" %)**AT+FDR** (%%) Reset Parameters to Factory Default, Keys Reserve
1297 -
1298 -(% style="background-color:#dcdcdc" %)**AT+NJM=0 **(%%)Set to ABP mode
1299 -
1300 -(% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%)Set the Adaptive Data Rate Off
1301 -
1302 -(% style="background-color:#dcdcdc" %)**AT+DR=5**   (%%)Set Data Rate
1303 -
1304 -(% style="background-color:#dcdcdc" %)**AT+TDC=60000** (%%) Set transmit interval to 60 seconds
1305 -
1306 -(% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) Set transmit frequency to 868.4Mhz
1307 -
1308 -(% style="background-color:#dcdcdc" %)**AT+RX2FQ=868400000** (%%) Set RX2Frequency to 868.4Mhz (according to the result from server)
1309 -
1310 -(% style="background-color:#dcdcdc" %)**AT+RX2DR=5**  (%%) Set RX2DR to match the downlink DR from server. see below
1311 -
1312 -(% style="background-color:#dcdcdc" %)**AT+DADDR=26** (%%) 01 1A F1 Set Device Address to 26 01 1A F1, this ID can be found in the LoRa Server portal.
1313 -
1314 -(% style="background-color:#dcdcdc" %)**ATZ**       (%%) Reset MCU
1315 -
1316 -
1317 -(% style="color:red" %)**Note:**
1318 -
1319 -(((
1320 -(% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1321 -2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1322 -3. Make sure SF / bandwidth setting in LG01/LG02 match the settings of AT+DR. refer [[this link>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.
1323 -4. The command AT+RX2FQ and AT+RX2DR is to let downlink work. to set the correct parameters, user can check the actually downlink parameters to be used. As below. Which shows the RX2FQ should use 868400000 and RX2DR should be 5
1324 -)))
1325 -
1326 -[[image:1654162478620-421.png]]
1327 -
1328 -
1329 -= 6. FAQ =
1330 -
1331 -== 6.1 How to upgrade the image? ==
1332 -
1333 -(((
1334 -The RS485-LN LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-LN to:
1335 -)))
1336 -
1337 -* (((
1338 -Support new features
1339 -)))
1340 -* (((
1341 -For bug fix
1342 -)))
1343 -* (((
1344 -Change LoRaWAN bands.
1345 -)))
1346 -
1347 -(((
1348 -Below shows the hardware connection for how to upload an image to RS485-LN:
1349 -)))
1350 -
1351 -[[image:1654162535040-878.png]]
1352 -
1353 -(((
1354 -**Step1:** Download [[flash loader>>url:https://www.st.com/content/st_com/en/products/development-tools/software-development-tools/stm32-software-development-tools/stm32-programmers/flasher-stm32.html]].
1355 -)))
1356 -
1357 -(((
1358 -**Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
1359 -)))
1360 -
1361 -(((
1362 -**Step3: **Open flashloader; choose the correct COM port to update.
1363 -)))
1364 -
1365 -(((
1366 -(((
1367 -(((
1368 -(% style="color:blue" %) Hold down the PRO button and then momentarily press the RST reset button and the SYS led will change from OFF to ON, While SYS LED is RED ON, it means the RS485-LN is ready to be program.
1369 -)))
1370 -)))
1371 -)))
1372 -
1373 -
1374 -[[image:image-20220602175818-12.png]]
1375 -
1376 -
1377 -[[image:image-20220602175848-13.png]]
1378 -
1379 -
1380 -[[image:image-20220602175912-14.png]]
1381 -
1382 -
1383 -**Notice**: In case user has lost the program cable. User can hand made one from a 3.5mm cable. The pin mapping is:
1384 -
1385 -[[image:image-20220602175638-10.png]]
1386 -
1387 -
1388 -== 6.2 How to change the LoRa Frequency Bands/Region? ==
1389 -
1390 -User can follow the introduction for [[how to upgrade image>>||anchor="H6.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
1391 -
1392 -
1393 -== 6.3 How many RS485-Slave can RS485-LN connects? ==
1394 -
1395 -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"]].
1396 -
1397 -
1398 -== 6.4 Compatible question to ChirpStack and TTI LoRaWAN server ? ==
1399 -
1400 -When user need to use with ChirpStack or TTI. Please set AT+RPL=4.
1401 -
1402 -Detail info check this link: [[Set Packet Receiving Response Level>>doc:Main.End Device AT Commands and Downlink Command.WebHome||anchor="H7.23SetPacketReceivingResponseLevel"]]
1403 -
1404 -
1405 -= 7. Trouble Shooting =
1406 -
1407 -== 7.1 Downlink doesn’t work, how to solve it? ==
1408 -
1409 -Please see this link for debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome]]
1410 -
1411 -
1412 -== 7.2 Why I can’t join TTN V3 in US915 /AU915 bands? ==
1413 -
1414 -It might about the channels mapping. Please see for detail: [[Notice of Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1415 -
1416 -
1417 -= 8. Order Info =
1418 -
1419 -(% style="color:blue" %)**Part Number: RS485-LN-XXX**
1420 -
1421 -(% style="color:blue" %)**XXX:**
1422 -
1423 -* (% style="color:blue" %)**EU433**(%%): frequency bands EU433
1424 -* (% style="color:blue" %)**EU868**(%%): frequency bands EU868
1425 -* (% style="color:blue" %)**KR920**(%%): frequency bands KR920
1426 -* (% style="color:blue" %)**CN470**(%%): frequency bands CN470
1427 -* (% style="color:blue" %)**AS923**(%%): frequency bands AS923
1428 -* (% style="color:blue" %)**AU915**(%%): frequency bands AU915
1429 -* (% style="color:blue" %)**US915**(%%): frequency bands US915
1430 -* (% style="color:blue" %)**IN865**(%%): frequency bands IN865
1431 -* (% style="color:blue" %)**RU864**(%%): frequency bands RU864
1432 -* (% style="color:blue" %)**KZ865**(%%): frequency bands KZ865
1433 -
1434 -= 9.Packing Info =
1435 -
1436 -
1437 -**Package Includes**:
1438 -
1439 -* RS485-LN x 1
1440 -* Stick Antenna for LoRa RF part x 1
1441 -* Program cable x 1
1442 -
1443 -**Dimension and weight**:
1444 -
1445 -* Device Size: 13.5 x 7 x 3 cm
1446 -* Device Weight: 105g
1447 -* Package Size / pcs : 14.5 x 8 x 5 cm
1448 -* Weight / pcs : 170g
1449 -
1450 -= 10. FCC Caution for RS485LN-US915 =
1451 -
1452 -(((
1453 -Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
1454 -)))
1455 -
1456 -(((
1457 -This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
1458 -)))
1459 -
1460 -(((
1461 -
1462 -)))
1463 -
1464 -(((
1465 -**IMPORTANT NOTE:**
1466 -)))
1467 -
1468 -(((
1469 -**Note: **This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
1470 -)))
1471 -
1472 -(((
1473 -—Reorient or relocate the receiving antenna.
1474 -)))
1475 -
1476 -(((
1477 -—Increase the separation between the equipment and receiver.
1478 -)))
1479 -
1480 -(((
1481 -—Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
1482 -)))
1483 -
1484 -(((
1485 -—Consult the dealer or an experienced radio/TV technician for help.
1486 -)))
1487 -
1488 -(((
1489 -
1490 -)))
1491 -
1492 -(((
1493 -**FCC Radiation Exposure Statement:**
1494 -)))
1495 -
1496 -(((
1497 -This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment.This equipment should be installed and operated with minimum distance 20cm between the radiator& your body.
1498 -)))
1499 -
1500 -
1501 -= 11. Support =
1502 -
1503 -* (((
1504 -Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
1505 -)))
1506 -* (((
1507 -Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to [[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]].
1508 -)))
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