Skip to Content
Last modified by Mengting Qiu on 2025/07/14 09:59
From version 59.3
edited by Xiaoling
on 2022/06/06 14:20
Change comment: There is no comment for this version
To version 40.1
edited by Xiaoling
on 2022/06/02 16:33
Change comment: Uploaded new attachment "image-20220602163333-5.png", version {1}

Summary

Details

Page properties
Content
... ... @@ -6,18 +6,12 @@
6 6  **RS485-LN – RS485 to LoRaWAN Converter User Manual**
7 7  
8 8  
9 -
10 -
11 11  **Table of Contents:**
12 12  
13 -{{toc/}}
14 14  
15 15  
16 16  
17 17  
18 -
19 -
20 -
21 21  = 1.Introduction =
22 22  
23 23  == 1.1 What is RS485-LN RS485 to LoRaWAN Converter ==
... ... @@ -24,33 +24,23 @@
24 24  
25 25  (((
26 26  (((
27 -(((
28 28  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.
29 29  )))
30 -)))
31 31  
32 32  (((
33 -(((
34 34  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.
35 35  )))
36 -)))
37 37  
38 38  (((
39 -(((
40 40  (% 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.
41 41  )))
42 -)))
43 43  
44 44  (((
45 -(((
46 46  (% 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.
47 -)))
48 48  
49 -(((
50 50  (% 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]]
51 51  )))
52 52  )))
53 -)))
54 54  
55 55  [[image:1653267211009-519.png||height="419" width="724"]]
56 56  
... ... @@ -90,10 +90,8 @@
90 90  * Preamble detection.
91 91  * 127 dB Dynamic Range RSSI.
92 92  * Automatic RF Sense and CAD with ultra-fast AFC.
93 -* Packet engine up to 256 bytes with CRC
77 +* Packet engine up to 256 bytes with CRC.
94 94  
95 -
96 -
97 97  == 1.3 Features ==
98 98  
99 99  * LoRaWAN Class A & Class C protocol (default Class C)
... ... @@ -105,8 +105,6 @@
105 105  * Support Modbus protocol
106 106  * Support Interrupt uplink (Since hardware version v1.2)
107 107  
108 -
109 -
110 110  == 1.4 Applications ==
111 111  
112 112  * Smart Buildings & Home Automation
... ... @@ -125,13 +125,9 @@
125 125  
126 126  (((
127 127  (((
128 -(((
129 129  v1.2: Add External Interrupt Pin.
130 -)))
131 131  
132 -(((
133 133  v1.0: Release
134 -)))
135 135  
136 136  
137 137  )))
... ... @@ -159,9 +159,7 @@
159 159  == 3.1 How it works? ==
160 160  
161 161  (((
162 -(((
163 163  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.
164 -)))
165 165  
166 166  
167 167  )))
... ... @@ -185,7 +185,7 @@
185 185  [[image:1653268227651-549.png||height="592" width="720"]]
186 186  
187 187  (((
188 -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:
162 +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:
189 189  )))
190 190  
191 191  (((
... ... @@ -237,15 +237,11 @@
237 237  
238 238  (((
239 239  (((
240 -(((
241 -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-BLviaATorDownlink"]] or LoRaWAN Downlink Command to configure what commands RS485-LN should send for each sampling and how to handle the return from RS485 devices.
214 +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.
242 242  )))
243 -)))
244 244  
245 245  (((
246 -(((
247 247  (% 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
248 -)))
249 249  
250 250  
251 251  )))
... ... @@ -255,19 +255,19 @@
255 255  
256 256  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:
257 257  
258 -(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
259 -|=(% style="width: 110px;" %)(((
228 +(% border="1" style="background-color:#ffffcc; color:green; width:782px" %)
229 +|(% style="width:128px" %)(((
260 260  **AT Commands**
261 -)))|=(% style="width: 190px;" %)(((
231 +)))|(% style="width:305px" %)(((
262 262  **Description**
263 -)))|=(% style="width: 190px;" %)(((
233 +)))|(% style="width:346px" %)(((
264 264  **Example**
265 265  )))
266 -|(% style="width:110px" %)(((
236 +|(% style="width:128px" %)(((
267 267  AT+BAUDR
268 -)))|(% style="width:190px" %)(((
238 +)))|(% style="width:305px" %)(((
269 269  Set the baud rate (for RS485 connection). Default Value is: 9600.
270 -)))|(% style="width:190px" %)(((
240 +)))|(% style="width:346px" %)(((
271 271  (((
272 272  AT+BAUDR=9600
273 273  )))
... ... @@ -276,11 +276,11 @@
276 276  Options: (1200,2400,4800,14400,19200,115200)
277 277  )))
278 278  )))
279 -|(% style="width:110px" %)(((
249 +|(% style="width:128px" %)(((
280 280  AT+PARITY
281 -)))|(% style="width:190px" %)(((
251 +)))|(% style="width:305px" %)(((
282 282  Set UART parity (for RS485 connection)
283 -)))|(% style="width:190px" %)(((
253 +)))|(% style="width:346px" %)(((
284 284  (((
285 285  AT+PARITY=0
286 286  )))
... ... @@ -289,9 +289,9 @@
289 289  Option: 0: no parity, 1: odd parity, 2: even parity
290 290  )))
291 291  )))
292 -|(% style="width:110px" %)(((
262 +|(% style="width:128px" %)(((
293 293  AT+STOPBIT
294 -)))|(% style="width:190px" %)(((
264 +)))|(% style="width:305px" %)(((
295 295  (((
296 296  Set serial stopbit (for RS485 connection)
297 297  )))
... ... @@ -299,7 +299,7 @@
299 299  (((
300 300  
301 301  )))
302 -)))|(% style="width:190px" %)(((
272 +)))|(% style="width:346px" %)(((
303 303  (((
304 304  AT+STOPBIT=0 for 1bit
305 305  )))
... ... @@ -321,21 +321,15 @@
321 321  )))
322 322  )))
323 323  
324 -(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
325 -|=(% style="width: 110px;" %)**AT Commands**|=(% style="width: 190px;" %)**Description**|=(% style="width: 190px;" %)**Example**
326 -|AT+CFGDEV|(% style="width:110px" %)(((
327 -(((
294 +(% border="1" style="background-color:#ffffcc; color:green; width:806px" %)
295 +|**AT Commands**|(% style="width:418px" %)**Description**|(% style="width:256px" %)**Example**
296 +|AT+CFGDEV|(% style="width:418px" %)(((
328 328  This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
329 -)))
330 330  
331 -(((
332 332  AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
333 -)))
334 334  
335 -(((
336 336  mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
337 -)))
338 -)))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
302 +)))|(% style="width:256px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
339 339  
340 340  === 3.3.3 Configure read commands for each sampling ===
341 341  
... ... @@ -382,8 +382,8 @@
382 382  
383 383  **AT+DATACUTx : **This command defines how to handle the return from AT+COMMANDx, max return length is 45 bytes.
384 384  
385 -(% border="1" style="background-color:#4bacc6; color:white; width:510px" %)
386 -|(% style="width:510px" %)(((
349 +(% border="1" style="background-color:#4bacc6; color:white; width:725px" %)
350 +|(% style="width:722px" %)(((
387 387  **AT+DATACUTx=a,b,c**
388 388  
389 389  * **a: length for the return of AT+COMMAND**
... ... @@ -452,7 +452,6 @@
452 452  
453 453  (% style="color:#4f81bd" %)**Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
454 454  
455 -
456 456  1. PAYVER: Defined by AT+PAYVER
457 457  1. PAYLOAD COUNT: Total how many uplinks of this sampling.
458 458  1. PAYLOAD#: Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
... ... @@ -509,33 +509,33 @@
509 509  
510 510  == 3.4 Uplink Payload ==
511 511  
475 +(% border="1" style="background-color:#4bacc6; color:white; width:734px" %)
476 +|**Size(bytes)**|(% style="width:120px" %)**2**|(% style="width:116px" %)**1**|(% style="width:386px" %)**Length depends on the return from the commands**
477 +|Value|(% style="width:120px" %)(((
478 +Battery(mV)
512 512  
513 -[[image:image-20220606110929-1.png]]
480 +&
514 514  
482 +Interrupt _Flag
483 +)))|(% style="width:116px" %)(((
484 +PAYLOAD_VER
485 +
486 +
487 +)))|(% 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.
488 +
515 515  Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
516 516  
517 517  
518 518  == 3.5 Configure RS485-BL via AT or Downlink ==
519 519  
520 -(((
521 521  User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
522 -)))
523 523  
524 -(((
525 525  There are two kinds of Commands:
526 -)))
527 527  
528 -* (((
529 -(% 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]]
530 -)))
498 +* (% 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]]
531 531  
532 -* (((
533 -(% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-LN.  User can see these commands below:
534 -)))
500 +* (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-LN.  User can see these commands below:
535 535  
536 -(((
537 -
538 -)))
539 539  
540 540  
541 541  === 3.5.1 Common Commands ===
... ... @@ -543,950 +543,570 @@
543 543  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]]
544 544  
545 545  
546 -=== 3.5.2 Sensor related commands ===
509 +=== 3.5.2 Sensor related commands: ===
547 547  
548 -Response feature is added to the server's downlink, a special package with a FPort of 200 will be uploaded immediately after receiving the data sent by the server.
511 +==== Choose Device Type (RS485 or TTL) ====
549 549  
550 -[[image:image-20220602163333-5.png||height="263" width="1160"]]
513 +RS485-BL can connect to either RS485 sensors or TTL sensor. User need to specify what type of sensor need to connect.
551 551  
552 -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)
515 +* AT Command
553 553  
517 +**AT+MOD=1** ~/~/ Set to support RS485-MODBUS type sensors. User can connect multiply RS485 , Modbus sensors to the A / B pins.
554 554  
555 -=== 3.5.3 Sensor related commands ===
519 +**AT+MOD=2** ~/~/ Set to support TTL Level sensors, User can connect one TTL Sensor to the TXD/RXD/GND pins.
556 556  
557 557  
522 +* Downlink Payload
558 558  
524 +**0A aa**     à same as AT+MOD=aa
559 559  
560 -==== **RS485 Debug Command** ====
561 561  
562 -(((
563 -This command is used to configure the RS485 devices; they won’t be used during sampling.
564 -)))
565 565  
566 -* (((
567 -**AT Command**
568 -)))
528 +==== [[RS485 Debug Command>>path:#downlink_A8]] (AT+CFGDEV) ====
569 569  
570 -(% class="box infomessage" %)
571 -(((
572 -(((
573 -**AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m**
574 -)))
575 -)))
530 +This command is used to configure the RS485 or TTL sensors; they won’t be used during sampling.
576 576  
577 -(((
578 -m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
579 -)))
532 +* AT Command
580 580  
581 -* (((
582 -**Downlink Payload**
583 -)))
534 +AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
584 584  
585 -(((
536 +m: 0: no CRC; 1: add CRC-16/MODBUS in the end of this command.
537 +
538 +
539 +
540 +* Downlink Payload
541 +
586 586  Format: A8 MM NN XX XX XX XX YY
587 -)))
588 588  
589 -(((
590 590  Where:
591 -)))
592 592  
593 -* (((
594 -MM: 1: add CRC-16/MODBUS ; 0: no CRC
595 -)))
596 -* (((
597 -NN: The length of RS485 command
598 -)))
599 -* (((
600 -XX XX XX XX: RS485 command total NN bytes
601 -)))
602 -* (((
603 -(((
604 -YY: How many bytes will be uplink from the return of this RS485 command,
605 -)))
546 +* MM: 1: add CRC-16/MODBUS ; 0: no CRC
547 +* NN: The length of RS485 command
548 +* XX XX XX XX: RS485 command total NN bytes
549 +* YY: How many bytes will be uplink from the return of this RS485 command, if YY=0, RS485-BL will execute the downlink command without uplink; if YY>0, RS485-BL will uplink total YY bytes from the output of this RS485 command
606 606  
607 -* (((
608 -if YY=0, RS485-LN will execute the downlink command without uplink;
609 -)))
610 -* (((
611 -if YY>0, RS485-LN will uplink total YY bytes from the output of this RS485 command; Fport=200
612 -)))
613 -* (((
614 -if YY=FF, RS485-LN will uplink RS485 output with the downlink command content; Fport=200.
615 -)))
616 -)))
551 +**Example 1:**
617 617  
618 -(((
619 -**Example 1** ~-~-> Configure without ask for uplink (YY=0)
620 -)))
621 -
622 -(((
623 623  To connect a Modbus Alarm with below commands.
624 -)))
625 625  
626 -* (((
627 -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.
628 -)))
555 +* 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.
629 629  
630 -* (((
631 -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.
632 -)))
557 +* 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.
633 633  
634 -(((
635 635  So if user want to use downlink command to control to RS485 Alarm, he can use:
636 -)))
637 637  
638 -(((
639 -(% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 01 00**(%%): to activate the RS485 Alarm
640 -)))
561 +**A8 01 06 0A 05 00 04 00 01 00**: to activate the RS485 Alarm
641 641  
642 -(((
643 -(% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
644 -)))
563 +**A8 01 06 0A 05 00 04 00 00 00**: to deactivate the RS485 Alarm
645 645  
646 -(((
647 647  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.
648 -)))
649 649  
650 -(((
651 -
652 -)))
653 653  
654 -(((
655 -**Example 2** ~-~-> Configure with requesting uplink and original downlink command (**YY=FF**)
656 -)))
568 +**Example 2:**
657 657  
658 -(((
659 -User in IoT server send a downlink command: (% style="color:#4f81bd" %)**A8 01 06 0A 08 00 04 00 01 YY**
660 -)))
570 +Check TTL Sensor return:
661 661  
662 -(((
663 -
664 -)))
572 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image024.png]]
665 665  
666 -(((
667 -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:
668 -)))
669 669  
670 -(((
671 - **A8** (% style="color:#4f81bd" %)**0A 08 00 04 00  **(% style="color:red" %)**01 06** ** **(% style="color:green" %)**0A 08 00 04 00 00**
672 -)))
673 673  
674 -(((
675 - [[image:1654159460680-153.png]]
676 -)))
677 677  
577 +==== Set Payload version ====
678 678  
679 -
680 -
681 -==== **Set Payload version** ====
682 -
683 -(((
684 684  This is the first byte of the uplink payload. RS485-BL can connect to different sensors. User can set the PAYVER field to tell server how to decode the current payload.
685 -)))
686 686  
687 -* (((
688 -**AT Command:**
689 -)))
581 +* AT Command:
690 690  
691 -(% class="box infomessage" %)
692 -(((
693 -(((
694 -**AT+PAYVER: Set PAYVER field = 1**
695 -)))
696 -)))
583 +AT+PAYVER: Set PAYVER field = 1
697 697  
698 -* (((
699 -**Downlink Payload:**
700 -)))
701 701  
702 -(((
703 -**0xAE 01**  ~-~-> Set PAYVER field =  0x01
704 -)))
586 +* Downlink Payload:
705 705  
706 -(((
707 -**0xAE 0F**   ~-~-> Set PAYVER field =  0x0F
708 -)))
588 +0xAE 01   à Set PAYVER field =  0x01
709 709  
590 +0xAE 0F   à Set PAYVER field =  0x0F
710 710  
711 711  
593 +==== Set RS485 Sampling Commands ====
712 712  
713 -==== **Set RS485 Sampling Commands** ====
595 +AT+COMMANDx, AT+DATACUTx and AT+SEARCHx
714 714  
715 -(((
716 -AT+COMMANDx or AT+DATACUTx
717 -)))
597 +These three commands are used to configure how the RS485-BL polling data from Modbus device. Detail of usage please see : [[polling RS485 device>>path:#polling_485]].
718 718  
719 -(((
720 -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"]].
721 -)))
722 722  
723 -(((
724 -
725 -)))
600 +* AT Command:
726 726  
727 -* (((
728 -**AT Command:**
729 -)))
602 +AT+COMMANDx: Configure RS485 read command to sensor.
730 730  
731 -(% class="box infomessage" %)
732 -(((
733 -(((
734 -**AT+COMMANDx: Configure RS485 read command to sensor.**
735 -)))
736 -)))
604 +AT+DATACUTx: Configure how to handle return from RS485 devices.
737 737  
738 -(% class="box infomessage" %)
739 -(((
740 -(((
741 -**AT+DATACUTx: Configure how to handle return from RS485 devices.**
742 -)))
743 -)))
606 +AT+SEARCHx: Configure search command
744 744  
745 -(((
746 -
747 -)))
748 748  
749 -* (((
750 -**Downlink Payload:**
751 -)))
609 +* Downlink Payload:
752 752  
753 -(((
754 -**0xAF** downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
755 -)))
611 +0xAF downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
756 756  
757 -(((
758 -(% style="color:red" %)**Note**(%%): if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
759 -)))
613 +Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
760 760  
761 -(((
762 762  Format: AF MM NN LL XX XX XX XX YY
763 -)))
764 764  
765 -(((
766 766  Where:
767 -)))
768 768  
769 -* (((
770 -MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
771 -)))
772 -* (((
773 -NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
774 -)))
775 -* (((
776 -LL:  The length of AT+COMMAND or AT+DATACUT command
777 -)))
778 -* (((
779 -XX XX XX XX: AT+COMMAND or AT+DATACUT command
780 -)))
781 -* (((
782 -YY:  If YY=0, RS485-BL will execute the downlink command without uplink; if YY=1, RS485-LN will execute an uplink after got this command.
783 -)))
619 +* MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
620 +* NN: 0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
621 +* LL: The length of AT+COMMAND or AT+DATACUT command
622 +* XX XX XX XX: AT+COMMAND or AT+DATACUT command
623 +* YY: If YY=0, RS485-BL will execute the downlink command without uplink; if YY=1, RS485-BL will execute an uplink after got this command.
784 784  
785 -(((
786 -**Example:**
787 -)))
625 +Example:
788 788  
789 -(((
790 -(% 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
791 -)))
627 +**AF 03 01 06 0A 05 00 04 00 01 00**: Same as AT+COMMAND3=0A 05 00 04 00 01,1
792 792  
793 -(((
794 -(% 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**
795 -)))
629 +**AF 03 02 06 10 01 05 06 09 0A 00**: Same as AT+DATACUT3=**16**,**1**,**5+6+9+10**
796 796  
797 -(((
798 -(% 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**
799 -)))
631 +**AF 03 02 06 0B 02 05 07 08 0A 00**: Same as AT+DATACUT3=**11**,**2**,**5~~7+8~~10**
800 800  
801 801  
634 +0xAB downlink command can be used for set AT+SEARCHx
802 802  
636 +Example: **AB aa 01 03 xx xx xx** (03 here means there are total 3 bytes after 03) So
803 803  
804 -==== **Fast command to handle MODBUS device** ====
638 +* AB aa 01 03 xx xx xx  same as AT+SEARCHaa=1,xx xx xx
639 +* AB aa 02 03 xx xx xx 02 yy yy(03 means there are 3 bytes after 03, they are xx xx xx;02 means there are 2 bytes after 02, they are yy yy) so the commands
805 805  
806 -(((
807 -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]].
808 -)))
641 +**AB aa 02 03 xx xx xx 02 yy yy**  same as **AT+SEARCHaa=2,xx xx xx+yy yy**
809 809  
810 -(((
811 -This command is valid since v1.3 firmware version
812 -)))
813 813  
814 -(((
815 -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.
816 -)))
644 +==== Fast command to handle MODBUS device ====
817 817  
818 -(((
819 -
820 -)))
646 +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]].
821 821  
822 -(((
823 -**Example:**
824 -)))
648 +This command is valid since v1.3 firmware version
825 825  
826 -* (((
827 -AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2 are not configure (0,0,0). So RS485-LN.
828 -)))
829 -* (((
830 -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.
831 -)))
832 -* (((
833 -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.
834 -)))
835 835  
836 -[[image:image-20220602165351-6.png]]
651 +AT+MBFUN has only two value:
837 837  
838 -[[image:image-20220602165351-7.png]]
653 +* AT+MBFUN=1: Enable Modbus reading. And get response base on the MODBUS return
839 839  
655 +AT+MBFUN=1, device 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.
840 840  
657 +* AT+MBFUN=0: Disable Modbus fast reading.
841 841  
659 +Example:
842 842  
843 -==== **RS485 command timeout** ====
661 +* AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2 are not configure (0,0,0).
662 +* 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.
663 +* 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.
844 844  
845 -(((
846 -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.
847 -)))
665 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image025.png]]
848 848  
849 -(((
850 -Default value: 0, range:  0 ~~ 65 seconds
851 -)))
852 852  
853 -* (((
854 -**AT Command:**
855 -)))
668 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image026.png]]
856 856  
857 -(% class="box infomessage" %)
858 -(((
859 -(((
860 -**AT+CMDDLaa=hex(bb cc)*1000**
861 -)))
862 -)))
863 863  
864 -(((
865 -**Example:**
866 -)))
671 +* Downlink Commands:
867 867  
868 -(((
869 -**AT+CMDDL1=1000** to send the open time to 1000ms
870 -)))
673 +A9 aa -à Same as AT+MBFUN=aa
871 871  
872 -(((
873 -
874 -)))
875 875  
876 -* (((
877 -**Downlink Payload:**
878 -)))
676 +==== RS485 command timeout ====
879 879  
880 -(((
881 -**0x AA aa bb cc**
882 -)))
678 +Some Modbus device has slow action to send replies. This command is used to configure the RS485-BL to use longer time to wait for their action.
883 883  
884 -(((
885 -Same as: AT+CMDDLaa=hex(bb cc)*1000
886 -)))
680 +Default value: 0, range:  0 ~~ 5 seconds
887 887  
888 -(((
889 - **Example:**
890 -)))
891 891  
892 -(((
893 - 0xAA 01 00 01  ~-~-> Same as **AT+CMDDL1=1000 ms**
894 -)))
683 +* AT Command:
895 895  
685 +AT+CMDDLaa=hex(bb cc)
896 896  
687 +Example:
897 897  
689 +**AT+CMDDL1=1000** to send the open time to 1000ms
898 898  
899 -==== **Uplink payload mode** ====
900 900  
901 -(((
902 -Define to use one uplink or multiple uplinks for the sampling.
903 -)))
692 +* Downlink Payload:
904 904  
905 -(((
906 -The use of this command please see: [[Compose Uplink payload>>||anchor="H3.3.4Composetheuplinkpayload"]]
907 -)))
694 +0x AA aa bb cc
908 908  
909 -* (((
910 -**AT Command:**
911 -)))
696 +Same as: AT+CMDDLaa=hex(bb cc)
912 912  
913 -(% class="box infomessage" %)
914 -(((
915 -(((
916 -**AT+DATAUP=0**
917 -)))
918 -)))
698 + Example:
919 919  
920 -(% class="box infomessage" %)
921 -(((
922 -(((
923 -**AT+DATAUP=1**
924 -)))
925 -)))
700 + 0xAA 01 03 E8  à Same as **AT+CMDDL1=1000 ms**
926 926  
927 -(((
928 -
929 -)))
930 930  
931 -* (((
932 -**Downlink Payload:**
933 -)))
703 +==== [[Uplink>>path:#downlink_A8]] payload mode ====
934 934  
935 -(((
936 -**0xAD 00**  **~-~->** Same as AT+DATAUP=0
937 -)))
705 +Define to use one uplink or multiple uplinks for the sampling.
938 938  
939 -(((
940 -**0xAD 01**  **~-~->** Same as AT+DATAUP=1
941 -)))
707 +The use of this command please see: [[Compose Uplink payload>>path:#DataUP]]
942 942  
709 +* AT Command:
943 943  
711 +AT+DATAUP=0
944 944  
713 +AT+DATAUP=1
945 945  
946 -==== **Manually trigger an Uplink** ====
947 947  
948 -(((
949 -Ask device to send an uplink immediately.
950 -)))
716 +* Downlink Payload:
951 951  
952 -* (((
953 -**AT Command:**
954 -)))
718 +0xAD 00   à Same as AT+DATAUP=0
955 955  
956 -(((
957 -No AT Command for this, user can press the [[ACT button>>||anchor="H3.7Buttons"]] for 1 second for the same.
958 -)))
720 +0xAD 01   à Same as AT+DATAUP=1
959 959  
960 -(((
961 -
962 -)))
963 963  
964 -* (((
965 -**Downlink Payload:**
966 -)))
723 +==== Manually trigger an Uplink ====
967 967  
968 -(((
969 -**0x08 FF**, RS485-LN will immediately send an uplink.
970 -)))
725 +Ask device to send an uplink immediately.
971 971  
727 +* Downlink Payload:
972 972  
729 +0x08 FF, RS485-BL will immediately send an uplink.
973 973  
974 974  
975 -==== **Clear RS485 Command** ====
732 +==== Clear RS485 Command ====
976 976  
977 -(((
978 978  The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
979 -)))
980 980  
981 -* (((
982 -**AT Command:**
983 -)))
984 984  
985 -(((
737 +* AT Command:
738 +
986 986  **AT+CMDEAR=mm,nn**   mm: start position of erase ,nn: stop position of erase
987 -)))
988 988  
989 -(((
990 990  Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
991 -)))
992 992  
993 -(((
994 994  Example screen shot after clear all RS485 commands. 
995 -)))
996 996  
997 -(((
998 -
999 -)))
1000 1000  
1001 -(((
746 +
1002 1002  The uplink screen shot is:
1003 -)))
1004 1004  
1005 -[[image:1654160691922-496.png]]
749 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image023.png]]
1006 1006  
1007 1007  
1008 -* (((
1009 -**Downlink Payload:**
1010 -)))
752 +* Downlink Payload:
1011 1011  
1012 -(((
1013 -**0x09 aa bb** same as AT+CMDEAR=aa,bb
1014 -)))
754 +0x09 aa bb same as AT+CMDEAR=aa,bb
1015 1015  
1016 1016  
757 +==== Set Serial Communication Parameters ====
1017 1017  
1018 -
1019 -==== **Set Serial Communication Parameters** ====
1020 -
1021 -(((
1022 1022  Set the Rs485 serial communication parameters:
1023 -)))
1024 1024  
1025 -* (((
1026 -**AT Command:**
1027 -)))
761 +* AT Command:
1028 1028  
1029 -(((
1030 1030  Set Baud Rate:
1031 -)))
1032 1032  
1033 -(% class="box infomessage" %)
1034 -(((
1035 -(((
1036 -**AT+BAUDR=9600**    ~/~/ Options: (1200,2400,4800,14400,19200,115200)
1037 -)))
1038 -)))
765 +AT+BAUDR=9600    ~/~/ Options: (1200,2400,4800,14400,19200,115200)
1039 1039  
1040 -(((
1041 -Set UART Parity
1042 -)))
1043 1043  
1044 -(% class="box infomessage" %)
1045 -(((
1046 -(((
1047 -**AT+PARITY=0**    ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity
1048 -)))
1049 -)))
768 +Set UART parity
1050 1050  
1051 -(((
770 +AT+PARITY=0    ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity
771 +
772 +
1052 1052  Set STOPBIT
1053 -)))
1054 1054  
1055 -(% class="box infomessage" %)
1056 -(((
1057 -(((
1058 -**AT+STOPBIT=0**    ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
1059 -)))
1060 -)))
775 +AT+STOPBIT=0    ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
1061 1061  
1062 -(((
1063 -
1064 -)))
1065 1065  
1066 -* (((
1067 -**Downlink Payload:**
1068 -)))
778 +* Downlink Payload:
1069 1069  
1070 -(((
1071 -**A7 01 aa bb**: Same  AT+BAUDR=hex(aa bb)*100
1072 -)))
780 +A7 01 aa bb: Same  AT+BAUDR=hex(aa bb)*100
1073 1073  
1074 -(((
1075 -**Example:**
1076 -)))
782 +Example:
1077 1077  
1078 -* (((
1079 -A7 01 00 60   same as AT+BAUDR=9600
1080 -)))
1081 -* (((
1082 -A7 01 04 80  same as AT+BAUDR=115200
1083 -)))
784 +* A7 01 00 60   same as AT+BAUDR=9600
785 +* A7 01 04 80  same as AT+BAUDR=115200
1084 1084  
1085 -(((
1086 1086  A7 02 aa: Same as  AT+PARITY=aa  (aa value: 00 , 01 or 02)
1087 -)))
1088 1088  
1089 -(((
1090 1090  A7 03 aa: Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
1091 -)))
1092 1092  
1093 1093  
792 +==== Control output power duration ====
1094 1094  
794 +User can set the output power duration before each sampling.
1095 1095  
1096 -== 3.6 Listening mode for RS485 network ==
796 +* AT Command:
1097 1097  
1098 -(((
1099 -This feature support since firmware v1.4
1100 -)))
798 +Example:
1101 1101  
1102 -(((
1103 -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.
1104 -)))
800 +AT+3V3T=1000 ~/~/ 3V3 output power will open 1s before each sampling.
1105 1105  
1106 -[[image:image-20220602171200-8.png||height="567" width="1007"]]
802 +AT+5VT=1000 ~/~/ +5V output power will open 1s before each sampling.
1107 1107  
1108 -(((
1109 -To enable the listening mode, use can run the command AT+RXMODE.
1110 -)))
1111 1111  
1112 -(((
1113 -
1114 -)))
805 +* LoRaWAN Downlink Command:
1115 1115  
1116 -(% border="1" cellspacing="10" style="background-color:#ffffcc; width:500px" %)
1117 -|=(% style="width: 100px;" %)(((
1118 -**Command example**
1119 -)))|=(% style="width: 400px;" %)(((
1120 -**Function**
1121 -)))
1122 -|(% style="width:100px" %)(((
1123 -AT+RXMODE=1,10
1124 -)))|(% style="width:400px" %)(((
1125 -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.
1126 -)))
1127 -|(% style="width:100px" %)(((
1128 -AT+RXMODE=2,500
1129 -)))|(% style="width:400px" %)(((
1130 -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
1131 -)))
1132 -|(% style="width:100px" %)(((
1133 -AT+RXMODE=0,0
1134 -)))|(% style="width:400px" %)(((
1135 -Disable listening mode. This is the default settings.
1136 -)))
1137 -|(% style="width:100px" %)(((
1138 -
1139 -)))|(% style="width:400px" %)(((
1140 -A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
1141 -)))
807 +07 01 aa bb  Same as AT+5VT=(aa bb)
1142 1142  
1143 -(((
1144 -**Downlink Command:**
1145 -)))
809 +07 02 aa bb  Same as AT+3V3T=(aa bb)
1146 1146  
1147 -(((
1148 -**0xA6 aa bb cc ** same as AT+RXMODE=aa,(bb<<8 | cc)
1149 -)))
1150 1150  
1151 -(((
1152 -
1153 -)))
1154 1154  
1155 -(((
1156 -**Example**:
1157 -)))
1158 1158  
1159 -(((
1160 -The RS485-LN is set to AT+RXMODE=2,1000
1161 -)))
814 +1.
815 +11. Buttons
1162 1162  
1163 -(((
1164 -There is a two Modbus commands in the RS485 network as below:
1165 -)))
817 +|**Button**|**Feature**
818 +|**RST**|Reboot RS485-BL
1166 1166  
1167 -(((
1168 -The Modbus master send a command: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b
1169 -)))
820 +1.
821 +11. +3V3 Output
1170 1170  
1171 -(((
1172 -And Modbus slave reply with: (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
1173 -)))
823 +RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor.
1174 1174  
1175 -(((
1176 -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
1177 -)))
825 +The +3V3 output will be valid for every sampling. RS485-BL will enable +3V3 output before all sampling and disable the +3V3 after all sampling. 
1178 1178  
1179 -(((
1180 -[[image:image-20220602171200-9.png]]
1181 -)))
1182 1182  
1183 -(((
1184 -
1185 -)))
828 +The +3V3 output time can be controlled by AT Command.
1186 1186  
1187 -(((
1188 -(((
1189 -(% 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.
1190 -)))
1191 -)))
830 +**AT+3V3T=1000**
1192 1192  
832 +Means set +3v3 valid time to have 1000ms. So, the real +3v3 output will actually have 1000ms + sampling time for other sensors.
1193 1193  
1194 -== 3.7 Buttons ==
1195 1195  
835 +By default, the AT+3V3T=0. This is a special case, means the +3V3 output is always on at any time
1196 1196  
1197 -(% border="1" cellspacing="10" style="background-color:#f7faff; width:400px" %)
1198 -|=(% style="width: 50px;" %)**Button**|=(% style="width: 350px;" %)**Feature**
1199 -|(% style="width:50px" %)**ACT**|(% style="width:350px" %)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**
1200 -|(% style="width:50px" %)**RST**|(% style="width:350px" %)Reboot RS485
1201 -|(% style="width:50px" %)**PRO**|(% style="width:350px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1202 1202  
1203 -== 3.8 LEDs ==
838 +1.
839 +11. +5V Output
1204 1204  
841 +RS485-BL has a Controllable +5V output, user can use this output to power external sensor.
1205 1205  
1206 -(% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1207 -|=(% style="width: 50px;" %)**LEDs**|=(% style="width: 380px;" %)**Feature**
1208 -|**PWR**|Always on if there is power
1209 -|**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.
843 +The +5V output will be valid for every sampling. RS485-BL will enable +5V output before all sampling and disable the +5v after all sampling. 
1210 1210  
1211 -= 4. Case Study =
1212 1212  
1213 -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]]
846 +The 5V output time can be controlled by AT Command.
1214 1214  
848 +**AT+5VT=1000**
1215 1215  
1216 -= 5. Use AT Command =
850 +Means set 5V valid time to have 1000ms. So, the real 5V output will actually have 1000ms + sampling time for other sensors.
1217 1217  
1218 -== 5.1 Access AT Command ==
1219 1219  
1220 -(((
1221 -RS485-BL supports AT Command set. User can use a USB to TTL adapter plus the 3.5mm Program Cable to connect to RS485-BL to use AT command, as below.
1222 -)))
853 +By default, the AT+5VT=0. If the external sensor which require 5v and require more time to get stable state, user can use this command to increase the power ON duration for this sensor.
1223 1223  
1224 -[[image:1654162355560-817.png]]
1225 1225  
1226 1226  
1227 -(((
1228 -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-BL. The default password is 123456. Below is the output for reference:
1229 -)))
1230 1230  
1231 -[[image:1654162368066-342.png]]
858 +1.
859 +11. LEDs
1232 1232  
861 +|**LEDs**|**Feature**
862 +|**LED1**|Blink when device transmit a packet.
1233 1233  
1234 -(((
1235 -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/]]
864 +1.
865 +11. Switch Jumper
866 +
867 +|**Switch Jumper**|**Feature**
868 +|**SW1**|(((
869 +ISP position: Upgrade firmware via UART
870 +
871 +Flash position: Configure device, check running status.
1236 1236  )))
873 +|**SW2**|(((
874 +5V position: set to compatible with 5v I/O.
1237 1237  
876 +3.3v position: set to compatible with 3.3v I/O.,
877 +)))
1238 1238  
879 ++3.3V: is always ON
1239 1239  
1240 -== 5.2 Common AT Command Sequence ==
881 ++5V: Only open before every sampling. The time is by default, it is AT+5VT=0.  Max open time. 5000 ms.
1241 1241  
1242 -=== 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
883 +1. Case Study
1243 1243  
1244 -If device has not joined network yet:
885 +User can check this URL for some case studies.
1245 1245  
1246 -(% class="box infomessage" %)
1247 -(((
1248 -**AT+FDR**
1249 -)))
887 +[[http:~~/~~/wiki.dragino.com/index.php?title=APP_RS485_COMMUNICATE_WITH_SENSORS>>url:http://wiki.dragino.com/index.php?title=APP_RS485_COMMUNICATE_WITH_SENSORS]]
1250 1250  
1251 -(% class="box infomessage" %)
1252 -(((
1253 -**AT+NJM=0**
1254 -)))
1255 1255  
1256 -(% class="box infomessage" %)
1257 -(((
1258 -**ATZ**
1259 -)))
1260 1260  
1261 1261  
1262 -(((
1263 -If device already joined network:
1264 -)))
892 +1. Use AT Command
893 +11. Access AT Command
1265 1265  
1266 -(% class="box infomessage" %)
1267 -(((
1268 -**AT+NJM=0**
1269 -)))
895 +RS485-BL supports AT Command set. User can use a USB to TTL adapter plus the 3.5mm Program Cable to connect to RS485-BL to use AT command, as below.
1270 1270  
1271 -(% class="box infomessage" %)
1272 -(((
1273 -**ATZ**
1274 -)))
897 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image027.png]]
1275 1275  
1276 1276  
1277 -=== 5.5.2 Single-channel ABP mode (Use with LG01/LG02) ===
900 +In PC, User needs to set **serial tool**(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to **9600** to access to access serial console of RS485-BL. The default password is 123456. Below is the output for reference:
1278 1278  
902 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image028.png]]
1279 1279  
1280 -(% style="background-color:#dcdcdc" %)**AT+FDR** (%%) Reset Parameters to Factory Default, Keys Reserve
1281 1281  
1282 -(% style="background-color:#dcdcdc" %)**AT+NJM=0 **(%%)Set to ABP mode
1283 1283  
1284 -(% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%)Set the Adaptive Data Rate Off
906 +More detail AT Command manual can be found at [[AT Command Manual>>path:#AT_COMMAND]]
1285 1285  
1286 -(% style="background-color:#dcdcdc" %)**AT+DR=5**   (%%)Set Data Rate
1287 1287  
1288 -(% style="background-color:#dcdcdc" %)**AT+TDC=60000** (%%) Set transmit interval to 60 seconds
1289 1289  
1290 -(% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) Set transmit frequency to 868.4Mhz
910 +1.
911 +11. Common AT Command Sequence
912 +111. Multi-channel ABP mode (Use with SX1301/LG308)
1291 1291  
1292 -(% style="background-color:#dcdcdc" %)**AT+RX2FQ=868400000** (%%) Set RX2Frequency to 868.4Mhz (according to the result from server)
914 +If device has not joined network yet:
1293 1293  
1294 -(% style="background-color:#dcdcdc" %)**AT+RX2DR=5**  (%%) Set RX2DR to match the downlink DR from server. see below
916 +AT+FDR
1295 1295  
1296 -(% 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.
918 +AT+NJM=0
1297 1297  
1298 -(% style="background-color:#dcdcdc" %)**ATZ**       (%%) Reset MCU
920 +ATZ
1299 1299  
1300 1300  
1301 -(% style="color:red" %)**Note:**
923 +If device already joined network:
1302 1302  
1303 -(((
1304 -(% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1305 -2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1306 -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.
1307 -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
1308 -)))
925 +AT+NJM=0
1309 1309  
1310 -[[image:1654162478620-421.png]]
927 +ATZ
1311 1311  
929 +1.
930 +11.
931 +111. Single-channel ABP mode (Use with LG01/LG02)
1312 1312  
1313 -= 6. FAQ =
933 +AT+FDR   Reset Parameters to Factory Default, Keys Reserve
1314 1314  
1315 -== 6.1 How to upgrade the image? ==
935 +AT+NJM=0 Set to ABP mode
1316 1316  
1317 -(((
1318 -The RS485-LN LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-LN to:
1319 -)))
937 +AT+ADR=0 Set the Adaptive Data Rate Off
1320 1320  
1321 -* (((
1322 -Support new features
1323 -)))
1324 -* (((
1325 -For bug fix
1326 -)))
1327 -* (((
1328 -Change LoRaWAN bands.
1329 -)))
939 +AT+DR=5  Set Data Rate
1330 1330  
1331 -(((
1332 -Below shows the hardware connection for how to upload an image to RS485-LN:
1333 -)))
941 +AT+TDC=60000  Set transmit interval to 60 seconds
1334 1334  
1335 -[[image:1654162535040-878.png]]
943 +AT+CHS=868400000 Set transmit frequency to 868.4Mhz
1336 1336  
1337 -(((
1338 -**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]].
1339 -)))
945 +AT+RX2FQ=868400000 Set RX2Frequency to 868.4Mhz (according to the result from server)
1340 1340  
1341 -(((
1342 -**Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
1343 -)))
947 +AT+RX2DR=5  Set RX2DR to match the downlink DR from server. see below
1344 1344  
1345 -(((
1346 -**Step3: **Open flashloader; choose the correct COM port to update.
1347 -)))
949 +AT+DADDR=26 01 1A F1 Set Device Address to 26 01 1A F1, this ID can be found in the LoRa Server portal.
1348 1348  
1349 -(((
1350 -(((
1351 -(((
1352 -(% 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.
1353 -)))
1354 -)))
1355 -)))
951 +ATZ          Reset MCU
1356 1356  
953 +**Note:**
1357 1357  
1358 -[[image:image-20220602175818-12.png]]
955 +1. Make sure the device is set to ABP mode in the IoT Server.
956 +1. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
957 +1. 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.
958 +1. 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
1359 1359  
960 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image029.png]]
1360 1360  
1361 -[[image:image-20220602175848-13.png]]
1362 1362  
963 +1. FAQ
964 +11. How to upgrade the image?
1363 1363  
1364 -[[image:image-20220602175912-14.png]]
966 +The RS485-BL LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-BL to:
1365 1365  
968 +* Support new features
969 +* For bug fix
970 +* Change LoRaWAN bands.
1366 1366  
1367 -**Notice**: In case user has lost the program cable. User can hand made one from a 3.5mm cable. The pin mapping is:
972 +Below shows the hardware connection for how to upload an image to RS485-BL:
1368 1368  
1369 -[[image:image-20220602175638-10.png]]
974 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image030.png]]
1370 1370  
976 +**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]].
1371 1371  
1372 -== 6.2 How to change the LoRa Frequency Bands/Region? ==
978 +**Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
1373 1373  
1374 -User can follow the introduction for [[how to upgrade image>>||anchor="H6.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
980 +**Step3: **Open flashloader; choose the correct COM port to update.
1375 1375  
1376 1376  
1377 -== 6.3 How many RS485-Slave can RS485-BL connects? ==
983 +|(((
984 +HOLD PRO then press the RST button, SYS will be ON, then click next
985 +)))
1378 1378  
1379 -The RS485-BL can support max 32 RS485 devices. Each uplink command of RS485-BL can support max 16 different RS485 command. So RS485-BL 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"]].
987 +|(((
988 +Board detected
989 +)))
1380 1380  
991 +|(((
992 +
993 +)))
1381 1381  
1382 -== 6.4 Compatible question to ChirpStack and TTI LoRaWAN server ? ==
995 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image031.png]] [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image032.png]]
1383 1383  
1384 -When user need to use with ChirpStack or TTI. Please set AT+RPL=4.
1385 1385  
1386 -Detail info check this link: [[Set Packet Receiving Response Level>>doc:Main.End Device AT Commands and Downlink Command.WebHome||anchor="H7.23SetPacketReceivingResponseLevel"]]
1387 1387  
999 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image033.png]] [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image034.png]]
1388 1388  
1389 -= 7. Trouble Shooting =
1390 1390  
1391 -== 7.1 Downlink doesn’t work, how to solve it? ==
1002 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image035.png]] [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image036.png]]
1392 1392  
1393 -Please see this link for debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome]]
1394 1394  
1005 +1.
1006 +11. How to change the LoRa Frequency Bands/Region?
1395 1395  
1396 -== 7.2 Why I can’t join TTN V3 in US915 /AU915 bands? ==
1008 +User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download.
1397 1397  
1398 -It might about the channels mapping. Please see for detail: [[Notice of Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1399 1399  
1400 1400  
1401 -= 8. Order Info =
1012 +1.
1013 +11. How many RS485-Slave can RS485-BL connects?
1402 1402  
1403 -(% style="color:blue" %)**Part Number: RS485-LN-XXX**
1015 +The RS485-BL can support max 32 RS485 devices. Each uplink command of RS485-BL can support max 16 different RS485 command. So RS485-BL 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>>path:#downlink_A8]].
1404 1404  
1405 -(% style="color:blue" %)**XXX:**
1406 1406  
1407 -* (% style="color:blue" %)**EU433**(%%): frequency bands EU433
1408 -* (% style="color:blue" %)**EU868**(%%): frequency bands EU868
1409 -* (% style="color:blue" %)**KR920**(%%): frequency bands KR920
1410 -* (% style="color:blue" %)**CN470**(%%): frequency bands CN470
1411 -* (% style="color:blue" %)**AS923**(%%): frequency bands AS923
1412 -* (% style="color:blue" %)**AU915**(%%): frequency bands AU915
1413 -* (% style="color:blue" %)**US915**(%%): frequency bands US915
1414 -* (% style="color:blue" %)**IN865**(%%): frequency bands IN865
1415 -* (% style="color:blue" %)**RU864**(%%): frequency bands RU864
1416 -* (% style="color:blue" %)**KZ865**(%%): frequency bands KZ865
1417 1417  
1418 -= 9.Packing Info =
1419 1419  
1020 +1. Trouble Shooting     
1021 +11. Downlink doesn’t work, how to solve it?
1420 1420  
1421 -**Package Includes**:
1023 +Please see this link for debug:
1422 1422  
1423 -* RS485-LN x 1
1424 -* Stick Antenna for LoRa RF part x 1
1425 -* Program cable x 1
1025 +[[http:~~/~~/wiki.dragino.com/index.php?title=Main_Page#LoRaWAN_Communication_Debug>>url:http://wiki.dragino.com/index.php?title=Main_Page#LoRaWAN_Communication_Debug]] 
1426 1426  
1427 -**Dimension and weight**:
1428 1428  
1429 -* Device Size: 13.5 x 7 x 3 cm
1430 -* Device Weight: 105g
1431 -* Package Size / pcs : 14.5 x 8 x 5 cm
1432 -* Weight / pcs : 170g
1433 1433  
1434 -= 10. FCC Caution for RS485LN-US915 =
1029 +1.
1030 +11. Why I can’t join TTN V3 in US915 /AU915 bands?
1435 1435  
1436 -(((
1437 -Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
1438 -)))
1032 +It might about the channels mapping. Please see for detail.
1439 1439  
1440 -(((
1441 -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.
1442 -)))
1034 +[[http:~~/~~/wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#Notice_of_US915.2FCN470.2FAU915_Frequency_band>>url:http://wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#Notice_of_US915.2FCN470.2FAU915_Frequency_band]]
1443 1443  
1444 -(((
1445 -
1446 -)))
1447 1447  
1448 -(((
1449 -**IMPORTANT NOTE:**
1450 -)))
1451 1451  
1452 -(((
1453 -**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:
1454 -)))
1038 +1. Order Info
1455 1455  
1456 -(((
1457 -—Reorient or relocate the receiving antenna.
1458 -)))
1040 +**Part Number: RS485-BL-XXX**
1459 1459  
1460 -(((
1461 -—Increase the separation between the equipment and receiver.
1462 -)))
1042 +**XXX:**
1463 1463  
1464 -(((
1465 -—Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
1466 -)))
1044 +* **EU433**: frequency bands EU433
1045 +* **EU868**: frequency bands EU868
1046 +* **KR920**: frequency bands KR920
1047 +* **CN470**: frequency bands CN470
1048 +* **AS923**: frequency bands AS923
1049 +* **AU915**: frequency bands AU915
1050 +* **US915**: frequency bands US915
1051 +* **IN865**: frequency bands IN865
1052 +* **RU864**: frequency bands RU864
1053 +* **KZ865: **frequency bands KZ865
1467 1467  
1468 -(((
1469 -—Consult the dealer or an experienced radio/TV technician for help.
1470 -)))
1055 +1. Packing Info
1471 1471  
1472 -(((
1473 -
1474 -)))
1057 +**Package Includes**:
1475 1475  
1476 -(((
1477 -**FCC Radiation Exposure Statement:**
1478 -)))
1059 +* RS485-BL x 1
1060 +* Stick Antenna for LoRa RF part x 1
1061 +* Program cable x 1
1479 1479  
1480 -(((
1481 -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.
1482 -)))
1063 +**Dimension and weight**:
1483 1483  
1065 +* Device Size: 13.5 x 7 x 3 cm
1066 +* Device Weight: 105g
1067 +* Package Size / pcs : 14.5 x 8 x 5 cm
1068 +* Weight / pcs : 170g
1484 1484  
1485 -= 11. Support =
1070 +1. Support
1486 1486  
1487 -* (((
1488 -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.
1489 -)))
1490 -* (((
1491 -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]].
1492 -)))
1072 +* 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.
1073 +* 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
1074 +
1075 +[[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]]
1654159460680-153.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -24.9 KB
Content
1654160691922-496.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -109.3 KB
Content
1654162355560-817.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -670.0 KB
Content
1654162368066-342.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -192.9 KB
Content
1654162478620-421.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -158.9 KB
Content
1654162535040-878.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -670.0 KB
Content
image-20220602165351-6.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -10.6 KB
Content
image-20220602165351-7.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -19.3 KB
Content
image-20220602171200-8.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -276.1 KB
Content
image-20220602171200-9.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -10.0 KB
Content
image-20220602175638-10.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -85.5 KB
Content
image-20220602175743-11.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -85.5 KB
Content
image-20220602175818-12.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -102.5 KB
Content
image-20220602175848-13.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -250.9 KB
Content
image-20220602175912-14.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -176.1 KB
Content
image-20220606110929-1.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -13.9 KB
Content