Last modified by Bei Jinggeng on 2025/01/16 11:36
<
From version < 57.42 >
edited by Xiaoling
on 2022/06/06 10:12
To version < 58.26 >
edited by Xiaoling
on 2022/06/06 11:27
>
Change comment: There is no comment for this version

Summary

Details

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Content
... ... @@ -103,6 +103,7 @@
103 103  * Support Modbus protocol
104 104  * Support Interrupt uplink (Since hardware version v1.2)
105 105  
106 +
106 106  == 1.4 Applications ==
107 107  
108 108  * Smart Buildings & Home Automation
... ... @@ -112,6 +112,7 @@
112 112  * Smart Cities
113 113  * Smart Factory
114 114  
116 +
115 115  == 1.5 Firmware Change log ==
116 116  
117 117  [[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
... ... @@ -121,9 +121,13 @@
121 121  
122 122  (((
123 123  (((
126 +(((
124 124  v1.2: Add External Interrupt Pin.
128 +)))
125 125  
130 +(((
126 126  v1.0: Release
132 +)))
127 127  
128 128  
129 129  )))
... ... @@ -151,7 +151,9 @@
151 151  == 3.1 How it works? ==
152 152  
153 153  (((
160 +(((
154 154  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.
162 +)))
155 155  
156 156  
157 157  )))
... ... @@ -241,19 +241,19 @@
241 241  
242 242  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:
243 243  
244 -(% border="1" style="background-color:#ffffcc; color:green; width:782px" %)
245 -|(% style="width:128px" %)(((
252 +(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
253 +|=(% style="width: 110px;" %)(((
246 246  **AT Commands**
247 -)))|(% style="width:305px" %)(((
255 +)))|=(% style="width: 190px;" %)(((
248 248  **Description**
249 -)))|(% style="width:346px" %)(((
257 +)))|=(% style="width: 190px;" %)(((
250 250  **Example**
251 251  )))
252 -|(% style="width:128px" %)(((
260 +|(% style="width:110px" %)(((
253 253  AT+BAUDR
254 -)))|(% style="width:305px" %)(((
262 +)))|(% style="width:190px" %)(((
255 255  Set the baud rate (for RS485 connection). Default Value is: 9600.
256 -)))|(% style="width:346px" %)(((
264 +)))|(% style="width:190px" %)(((
257 257  (((
258 258  AT+BAUDR=9600
259 259  )))
... ... @@ -262,11 +262,11 @@
262 262  Options: (1200,2400,4800,14400,19200,115200)
263 263  )))
264 264  )))
265 -|(% style="width:128px" %)(((
273 +|(% style="width:110px" %)(((
266 266  AT+PARITY
267 -)))|(% style="width:305px" %)(((
275 +)))|(% style="width:190px" %)(((
268 268  Set UART parity (for RS485 connection)
269 -)))|(% style="width:346px" %)(((
277 +)))|(% style="width:190px" %)(((
270 270  (((
271 271  AT+PARITY=0
272 272  )))
... ... @@ -275,9 +275,9 @@
275 275  Option: 0: no parity, 1: odd parity, 2: even parity
276 276  )))
277 277  )))
278 -|(% style="width:128px" %)(((
286 +|(% style="width:110px" %)(((
279 279  AT+STOPBIT
280 -)))|(% style="width:305px" %)(((
288 +)))|(% style="width:190px" %)(((
281 281  (((
282 282  Set serial stopbit (for RS485 connection)
283 283  )))
... ... @@ -285,7 +285,7 @@
285 285  (((
286 286  
287 287  )))
288 -)))|(% style="width:346px" %)(((
296 +)))|(% style="width:190px" %)(((
289 289  (((
290 290  AT+STOPBIT=0 for 1bit
291 291  )))
... ... @@ -299,6 +299,8 @@
299 299  )))
300 300  )))
301 301  
310 +
311 +
302 302  === 3.3.2 Configure sensors ===
303 303  
304 304  (((
... ... @@ -307,16 +307,18 @@
307 307  )))
308 308  )))
309 309  
310 -(% border="1" style="background-color:#ffffcc; color:green; width:806px" %)
311 -|**AT Commands**|(% style="width:418px" %)**Description**|(% style="width:256px" %)**Example**
312 -|AT+CFGDEV|(% style="width:418px" %)(((
320 +(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
321 +|=(% style="width: 110px;" %)**AT Commands**|=(% style="width: 190px;" %)**Description**|=(% style="width: 190px;" %)**Example**
322 +|AT+CFGDEV|(% style="width:110px" %)(((
313 313  This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
314 314  
315 315  AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
316 316  
317 317  mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
318 -)))|(% style="width:256px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
328 +)))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
319 319  
330 +
331 +
320 320  === 3.3.3 Configure read commands for each sampling ===
321 321  
322 322  (((
... ... @@ -362,8 +362,8 @@
362 362  
363 363  **AT+DATACUTx : **This command defines how to handle the return from AT+COMMANDx, max return length is 45 bytes.
364 364  
365 -(% border="1" style="background-color:#4bacc6; color:white; width:725px" %)
366 -|(% style="width:722px" %)(((
377 +(% border="1" style="background-color:#4bacc6; color:white; width:510px" %)
378 +|(% style="width:510px" %)(((
367 367  **AT+DATACUTx=a,b,c**
368 368  
369 369  * **a: length for the return of AT+COMMAND**
... ... @@ -489,33 +489,35 @@
489 489  
490 490  == 3.4 Uplink Payload ==
491 491  
492 -(% border="1" style="background-color:#4bacc6; color:white; width:734px" %)
493 -|**Size(bytes)**|(% style="width:120px" %)**2**|(% style="width:116px" %)**1**|(% style="width:386px" %)**Length depends on the return from the commands**
494 -|Value|(% style="width:120px" %)(((
495 -Battery(mV)
496 496  
497 -&
505 +[[image:image-20220606110929-1.png]]
498 498  
499 -Interrupt _Flag
500 -)))|(% style="width:116px" %)(((
501 -PAYLOAD_VER
502 -
503 -
504 -)))|(% 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.
505 -
506 506  Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
507 507  
508 508  
509 509  == 3.5 Configure RS485-BL via AT or Downlink ==
510 510  
512 +(((
511 511  User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
514 +)))
512 512  
516 +(((
513 513  There are two kinds of Commands:
518 +)))
514 514  
515 -* (% 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]]
520 +* (((
521 +(% 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]]
522 +)))
516 516  
517 -* (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-LN.  User can see these commands below:
524 +* (((
525 +(% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-LN.  User can see these commands below:
526 +)))
518 518  
528 +(((
529 +
530 +)))
531 +
532 +
519 519  === 3.5.1 Common Commands ===
520 520  
521 521  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]]
... ... @@ -534,142 +534,282 @@
534 534  
535 535  
536 536  
551 +
537 537  ==== **RS485 Debug Command** ====
538 538  
554 +(((
539 539  This command is used to configure the RS485 devices; they won’t be used during sampling.
556 +)))
540 540  
541 -* **AT Command**
558 +* (((
559 +**AT Command**
560 +)))
542 542  
543 543  (% class="box infomessage" %)
544 544  (((
564 +(((
545 545  **AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m**
546 546  )))
567 +)))
547 547  
569 +(((
548 548  m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
571 +)))
549 549  
550 -* **Downlink Payload**
573 +* (((
574 +**Downlink Payload**
575 +)))
551 551  
577 +(((
552 552  Format: A8 MM NN XX XX XX XX YY
579 +)))
553 553  
581 +(((
554 554  Where:
583 +)))
555 555  
556 -* MM: 1: add CRC-16/MODBUS ; 0: no CRC
557 -* NN: The length of RS485 command
558 -* XX XX XX XX: RS485 command total NN bytes
559 -* YY: How many bytes will be uplink from the return of this RS485 command,
560 -** if YY=0, RS485-LN will execute the downlink command without uplink;
561 -** if YY>0, RS485-LN will uplink total YY bytes from the output of this RS485 command; Fport=200
562 -** if YY=FF, RS485-LN will uplink RS485 output with the downlink command content; Fport=200.
585 +* (((
586 +MM: 1: add CRC-16/MODBUS ; 0: no CRC
587 +)))
588 +* (((
589 +NN: The length of RS485 command
590 +)))
591 +* (((
592 +XX XX XX XX: RS485 command total NN bytes
593 +)))
594 +* (((
595 +(((
596 +YY: How many bytes will be uplink from the return of this RS485 command,
597 +)))
563 563  
599 +* (((
600 +if YY=0, RS485-LN will execute the downlink command without uplink;
601 +)))
602 +* (((
603 +if YY>0, RS485-LN will uplink total YY bytes from the output of this RS485 command; Fport=200
604 +)))
605 +* (((
606 +if YY=FF, RS485-LN will uplink RS485 output with the downlink command content; Fport=200.
607 +)))
608 +)))
609 +
610 +(((
564 564  **Example 1** ~-~-> Configure without ask for uplink (YY=0)
612 +)))
565 565  
614 +(((
566 566  To connect a Modbus Alarm with below commands.
616 +)))
567 567  
568 -* 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.
618 +* (((
619 +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.
620 +)))
569 569  
570 -* 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.
622 +* (((
623 +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.
624 +)))
571 571  
626 +(((
572 572  So if user want to use downlink command to control to RS485 Alarm, he can use:
628 +)))
573 573  
630 +(((
574 574  (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 01 00**(%%): to activate the RS485 Alarm
632 +)))
575 575  
634 +(((
576 576  (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
636 +)))
577 577  
638 +(((
578 578  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.
640 +)))
579 579  
642 +(((
643 +
644 +)))
580 580  
646 +(((
581 581  **Example 2** ~-~-> Configure with requesting uplink and original downlink command (**YY=FF**)
648 +)))
582 582  
650 +(((
583 583  User in IoT server send a downlink command: (% style="color:#4f81bd" %)**A8 01 06 0A 08 00 04 00 01 YY**
652 +)))
584 584  
654 +(((
655 +
656 +)))
585 585  
658 +(((
586 586  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:
660 +)))
587 587  
662 +(((
588 588   **A8** (% style="color:#4f81bd" %)**0A 08 00 04 00  **(% style="color:red" %)**01 06** ** **(% style="color:green" %)**0A 08 00 04 00 00**
664 +)))
589 589  
666 +(((
590 590   [[image:1654159460680-153.png]]
668 +)))
591 591  
592 592  
593 593  
672 +
594 594  ==== **Set Payload version** ====
595 595  
675 +(((
596 596  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.
677 +)))
597 597  
598 -* **AT Command:**
679 +* (((
680 +**AT Command:**
681 +)))
599 599  
600 600  (% class="box infomessage" %)
601 601  (((
685 +(((
602 602  **AT+PAYVER: Set PAYVER field = 1**
603 603  )))
688 +)))
604 604  
605 -* **Downlink Payload:**
690 +* (((
691 +**Downlink Payload:**
692 +)))
606 606  
694 +(((
607 607  **0xAE 01**  ~-~-> Set PAYVER field =  0x01
696 +)))
608 608  
698 +(((
609 609  **0xAE 0F**   ~-~-> Set PAYVER field =  0x0F
700 +)))
610 610  
611 611  
612 612  
704 +
613 613  ==== **Set RS485 Sampling Commands** ====
614 614  
707 +(((
615 615  AT+COMMANDx or AT+DATACUTx
709 +)))
616 616  
711 +(((
617 617  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"]].
713 +)))
618 618  
715 +(((
716 +
717 +)))
619 619  
620 -* **AT Command:**
719 +* (((
720 +**AT Command:**
721 +)))
621 621  
622 622  (% class="box infomessage" %)
623 623  (((
725 +(((
624 624  **AT+COMMANDx: Configure RS485 read command to sensor.**
625 625  )))
728 +)))
626 626  
627 627  (% class="box infomessage" %)
628 628  (((
732 +(((
629 629  **AT+DATACUTx: Configure how to handle return from RS485 devices.**
630 630  )))
735 +)))
631 631  
737 +(((
738 +
739 +)))
632 632  
633 -* **Downlink Payload:**
741 +* (((
742 +**Downlink Payload:**
743 +)))
634 634  
745 +(((
635 635  **0xAF** downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
747 +)))
636 636  
749 +(((
637 637  (% style="color:red" %)**Note**(%%): if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
751 +)))
638 638  
753 +(((
639 639  Format: AF MM NN LL XX XX XX XX YY
755 +)))
640 640  
757 +(((
641 641  Where:
759 +)))
642 642  
643 -* MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
644 -* NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
645 -* LL:  The length of AT+COMMAND or AT+DATACUT command
646 -* XX XX XX XX: AT+COMMAND or AT+DATACUT command
647 -* 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.
761 +* (((
762 +MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
763 +)))
764 +* (((
765 +NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
766 +)))
767 +* (((
768 +LL:  The length of AT+COMMAND or AT+DATACUT command
769 +)))
770 +* (((
771 +XX XX XX XX: AT+COMMAND or AT+DATACUT command
772 +)))
773 +* (((
774 +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.
775 +)))
648 648  
777 +(((
649 649  **Example:**
779 +)))
650 650  
781 +(((
651 651  (% 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
783 +)))
652 652  
785 +(((
653 653  (% 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**
787 +)))
654 654  
789 +(((
655 655  (% 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**
791 +)))
656 656  
657 657  
658 658  
795 +
659 659  ==== **Fast command to handle MODBUS device** ====
660 660  
798 +(((
661 661  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]].
800 +)))
662 662  
802 +(((
663 663  This command is valid since v1.3 firmware version
804 +)))
664 664  
806 +(((
665 665  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.
808 +)))
666 666  
810 +(((
811 +
812 +)))
667 667  
814 +(((
668 668  **Example:**
816 +)))
669 669  
670 -* AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2 are not configure (0,0,0). So RS485-LN.
671 -* 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.
672 -* 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.
818 +* (((
819 +AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2 are not configure (0,0,0). So RS485-LN.
820 +)))
821 +* (((
822 +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.
823 +)))
824 +* (((
825 +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.
826 +)))
673 673  
674 674  [[image:image-20220602165351-6.png]]
675 675  
... ... @@ -677,189 +677,360 @@
677 677  
678 678  
679 679  
834 +
680 680  ==== **RS485 command timeout** ====
681 681  
837 +(((
682 682  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.
839 +)))
683 683  
841 +(((
684 684  Default value: 0, range:  0 ~~ 65 seconds
843 +)))
685 685  
686 -* **AT Command:**
845 +* (((
846 +**AT Command:**
847 +)))
687 687  
688 688  (% class="box infomessage" %)
689 689  (((
851 +(((
690 690  **AT+CMDDLaa=hex(bb cc)*1000**
691 691  )))
854 +)))
692 692  
856 +(((
693 693  **Example:**
858 +)))
694 694  
860 +(((
695 695  **AT+CMDDL1=1000** to send the open time to 1000ms
862 +)))
696 696  
864 +(((
865 +
866 +)))
697 697  
698 -* **Downlink Payload:**
868 +* (((
869 +**Downlink Payload:**
870 +)))
699 699  
872 +(((
700 700  **0x AA aa bb cc**
874 +)))
701 701  
876 +(((
702 702  Same as: AT+CMDDLaa=hex(bb cc)*1000
878 +)))
703 703  
880 +(((
704 704   **Example:**
882 +)))
705 705  
884 +(((
706 706   0xAA 01 00 01  ~-~-> Same as **AT+CMDDL1=1000 ms**
886 +)))
707 707  
708 708  
709 709  
890 +
710 710  ==== **Uplink payload mode** ====
711 711  
893 +(((
712 712  Define to use one uplink or multiple uplinks for the sampling.
895 +)))
713 713  
897 +(((
714 714  The use of this command please see: [[Compose Uplink payload>>||anchor="H3.3.4Composetheuplinkpayload"]]
899 +)))
715 715  
716 -* **AT Command:**
901 +* (((
902 +**AT Command:**
903 +)))
717 717  
718 718  (% class="box infomessage" %)
719 719  (((
907 +(((
720 720  **AT+DATAUP=0**
721 721  )))
910 +)))
722 722  
723 723  (% class="box infomessage" %)
724 724  (((
914 +(((
725 725  **AT+DATAUP=1**
726 726  )))
917 +)))
727 727  
919 +(((
920 +
921 +)))
728 728  
729 -* **Downlink Payload:**
923 +* (((
924 +**Downlink Payload:**
925 +)))
730 730  
927 +(((
731 731  **0xAD 00**  **~-~->** Same as AT+DATAUP=0
929 +)))
732 732  
931 +(((
733 733  **0xAD 01**  **~-~->** Same as AT+DATAUP=1
933 +)))
734 734  
735 735  
736 736  
937 +
737 737  ==== **Manually trigger an Uplink** ====
738 738  
940 +(((
739 739  Ask device to send an uplink immediately.
942 +)))
740 740  
741 -* **AT Command:**
944 +* (((
945 +**AT Command:**
946 +)))
742 742  
948 +(((
743 743  No AT Command for this, user can press the [[ACT button>>||anchor="H3.7Buttons"]] for 1 second for the same.
950 +)))
744 744  
952 +(((
953 +
954 +)))
745 745  
746 -* **Downlink Payload:**
956 +* (((
957 +**Downlink Payload:**
958 +)))
747 747  
960 +(((
748 748  **0x08 FF**, RS485-LN will immediately send an uplink.
962 +)))
749 749  
750 750  
751 751  
966 +
752 752  ==== **Clear RS485 Command** ====
753 753  
969 +(((
754 754  The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
971 +)))
755 755  
756 -* **AT Command:**
973 +* (((
974 +**AT Command:**
975 +)))
757 757  
977 +(((
758 758  **AT+CMDEAR=mm,nn**   mm: start position of erase ,nn: stop position of erase
979 +)))
759 759  
981 +(((
760 760  Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
983 +)))
761 761  
985 +(((
762 762  Example screen shot after clear all RS485 commands. 
987 +)))
763 763  
989 +(((
990 +
991 +)))
764 764  
993 +(((
765 765  The uplink screen shot is:
995 +)))
766 766  
767 767  [[image:1654160691922-496.png]]
768 768  
769 769  
770 -* **Downlink Payload:**
1000 +* (((
1001 +**Downlink Payload:**
1002 +)))
771 771  
1004 +(((
772 772  **0x09 aa bb** same as AT+CMDEAR=aa,bb
1006 +)))
773 773  
774 774  
775 775  
1010 +
776 776  ==== **Set Serial Communication Parameters** ====
777 777  
1013 +(((
778 778  Set the Rs485 serial communication parameters:
1015 +)))
779 779  
780 -* **AT Command:**
1017 +* (((
1018 +**AT Command:**
1019 +)))
781 781  
1021 +(((
782 782  Set Baud Rate:
1023 +)))
783 783  
784 784  (% class="box infomessage" %)
785 785  (((
1027 +(((
786 786  **AT+BAUDR=9600**    ~/~/ Options: (1200,2400,4800,14400,19200,115200)
787 787  )))
1030 +)))
788 788  
1032 +(((
789 789  Set UART Parity
1034 +)))
790 790  
791 791  (% class="box infomessage" %)
792 792  (((
1038 +(((
793 793  **AT+PARITY=0**    ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity
794 794  )))
1041 +)))
795 795  
1043 +(((
796 796  Set STOPBIT
1045 +)))
797 797  
798 798  (% class="box infomessage" %)
799 799  (((
1049 +(((
800 800  **AT+STOPBIT=0**    ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
801 801  )))
1052 +)))
802 802  
1054 +(((
1055 +
1056 +)))
803 803  
804 -* **Downlink Payload:**
1058 +* (((
1059 +**Downlink Payload:**
1060 +)))
805 805  
1062 +(((
806 806  **A7 01 aa bb**: Same  AT+BAUDR=hex(aa bb)*100
1064 +)))
807 807  
1066 +(((
808 808  **Example:**
1068 +)))
809 809  
810 -* A7 01 00 60   same as AT+BAUDR=9600
811 -* A7 01 04 80  same as AT+BAUDR=115200
1070 +* (((
1071 +A7 01 00 60   same as AT+BAUDR=9600
1072 +)))
1073 +* (((
1074 +A7 01 04 80  same as AT+BAUDR=115200
1075 +)))
812 812  
1077 +(((
813 813  A7 02 aa: Same as  AT+PARITY=aa  (aa value: 00 , 01 or 02)
1079 +)))
814 814  
1081 +(((
815 815  A7 03 aa: Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
1083 +)))
816 816  
817 817  
1086 +
1087 +
818 818  == 3.6 Listening mode for RS485 network ==
819 819  
1090 +(((
820 820  This feature support since firmware v1.4
1092 +)))
821 821  
1094 +(((
822 822  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.
1096 +)))
823 823  
824 824  [[image:image-20220602171200-8.png||height="567" width="1007"]]
825 825  
1100 +(((
826 826  To enable the listening mode, use can run the command AT+RXMODE.
1102 +)))
827 827  
1104 +(((
1105 +
1106 +)))
828 828  
829 -(% border="1" style="background-color:#ffffcc; width:500px" %)
830 -|=(% style="width: 161px;" %)**Command example:**|=(% style="width: 337px;" %)**Function**
831 -|(% style="width:161px" %)AT+RXMODE=1,10 |(% style="width:337px" %)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.
832 -|(% style="width:161px" %)AT+RXMODE=2,500|(% style="width:337px" %)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
833 -|(% style="width:161px" %)AT+RXMODE=0,0|(% style="width:337px" %)Disable listening mode. This is the default settings.
834 -|(% style="width:161px" %) |(% style="width:337px" %)A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 ~| cc)
1108 +(% border="1" cellspacing="10" style="background-color:#ffffcc; width:500px" %)
1109 +|=(% style="width: 161px;" %)(((
1110 +**Command example:**
1111 +)))|=(% style="width: 337px;" %)(((
1112 +**Function**
1113 +)))
1114 +|(% style="width:161px" %)(((
1115 +AT+RXMODE=1,10
1116 +)))|(% style="width:337px" %)(((
1117 +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.
1118 +)))
1119 +|(% style="width:161px" %)(((
1120 +AT+RXMODE=2,500
1121 +)))|(% style="width:337px" %)(((
1122 +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
1123 +)))
1124 +|(% style="width:161px" %)(((
1125 +AT+RXMODE=0,0
1126 +)))|(% style="width:337px" %)(((
1127 +Disable listening mode. This is the default settings.
1128 +)))
1129 +|(% style="width:161px" %)(((
1130 +
1131 +)))|(% style="width:337px" %)(((
1132 +A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
1133 +)))
835 835  
1135 +(((
836 836  **Downlink Command:**
1137 +)))
837 837  
1139 +(((
838 838  **0xA6 aa bb cc ** same as AT+RXMODE=aa,(bb<<8 | cc)
1141 +)))
839 839  
1143 +(((
1144 +
1145 +)))
840 840  
1147 +(((
841 841  **Example**:
1149 +)))
842 842  
1151 +(((
843 843  The RS485-LN is set to AT+RXMODE=2,1000
1153 +)))
844 844  
1155 +(((
845 845  There is a two Modbus commands in the RS485 network as below:
1157 +)))
846 846  
1159 +(((
847 847  The Modbus master send a command: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b
1161 +)))
848 848  
1163 +(((
849 849  And Modbus slave reply with: (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
1165 +)))
850 850  
1167 +(((
851 851  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
1169 +)))
852 852  
1171 +(((
853 853  [[image:image-20220602171200-9.png]]
1173 +)))
854 854  
1175 +(((
1176 +
1177 +)))
855 855  
1179 +(((
856 856  (% 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.
1181 +)))
857 857  
858 858  
859 859  == 3.7 Buttons ==
860 860  
861 861  
862 -(% border="1" style="background-color:#f7faff; width:500px" %)
1187 +(% border="1" cellspacing="10" style="background-color:#f7faff; width:500px" %)
863 863  |=**Button**|=(% style="width: 1420px;" %)**Feature**
864 864  |**ACT**|(% style="width:1420px" %)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**
865 865  |**RST**|(% style="width:1420px" %)Reboot RS485
... ... @@ -866,14 +866,16 @@
866 866  |**PRO**|(% style="width:1420px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
867 867  
868 868  
1194 +
869 869  == 3.8 LEDs ==
870 870  
871 -(% border="1" style="background-color:#f7faff; width:500px" %)
1197 +(% border="1" cellspacing="10" style="background-color:#f7faff; width:500px" %)
872 872  |=**LEDs**|=**Feature**
873 873  |**PWR**|Always on if there is power
874 874  |**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.
875 875  
876 876  
1203 +
877 877  = 4. Case Study =
878 878  
879 879  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]]
... ... @@ -883,17 +883,23 @@
883 883  
884 884  == 5.1 Access AT Command ==
885 885  
1213 +(((
886 886  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.
1215 +)))
887 887  
888 888  [[image:1654162355560-817.png]]
889 889  
890 890  
1220 +(((
891 891  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:
1222 +)))
892 892  
893 893  [[image:1654162368066-342.png]]
894 894  
895 895  
1227 +(((
896 896  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/]]
1229 +)))
897 897  
898 898  
899 899  == 5.2 Common AT Command Sequence ==
... ... @@ -1051,7 +1051,6 @@
1051 1051  * (% style="color:blue" %)**KZ865**(%%): frequency bands KZ865
1052 1052  
1053 1053  
1054 -
1055 1055  = 9.Packing Info =
1056 1056  
1057 1057  
... ... @@ -1069,7 +1069,6 @@
1069 1069  * Weight / pcs : 170g
1070 1070  
1071 1071  
1072 -
1073 1073  = 10. FCC Caution for RS485LN-US915 =
1074 1074  
1075 1075  (((
image-20220606110929-1.png
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