Last modified by Bei Jinggeng on 2025/01/16 11:36
<
From version < 57.46 >
edited by Xiaoling
on 2022/06/06 10:22
To version < 58.33 >
edited by Xiaoling
on 2022/06/06 11:47
>
Change comment: There is no comment for this version

Summary

Details

Page properties
Content
... ... @@ -103,8 +103,6 @@
103 103  * Support Modbus protocol
104 104  * Support Interrupt uplink (Since hardware version v1.2)
105 105  
106 -
107 -
108 108  == 1.4 Applications ==
109 109  
110 110  * Smart Buildings & Home Automation
... ... @@ -114,8 +114,6 @@
114 114  * Smart Cities
115 115  * Smart Factory
116 116  
117 -
118 -
119 119  == 1.5 Firmware Change log ==
120 120  
121 121  [[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
... ... @@ -251,19 +251,19 @@
251 251  
252 252  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:
253 253  
254 -(% border="1" style="background-color:#ffffcc; color:green; width:782px" %)
255 -|(% style="width:128px" %)(((
250 +(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
251 +|=(% style="width: 110px;" %)(((
256 256  **AT Commands**
257 -)))|(% style="width:305px" %)(((
253 +)))|=(% style="width: 190px;" %)(((
258 258  **Description**
259 -)))|(% style="width:346px" %)(((
255 +)))|=(% style="width: 190px;" %)(((
260 260  **Example**
261 261  )))
262 -|(% style="width:128px" %)(((
258 +|(% style="width:110px" %)(((
263 263  AT+BAUDR
264 -)))|(% style="width:305px" %)(((
260 +)))|(% style="width:190px" %)(((
265 265  Set the baud rate (for RS485 connection). Default Value is: 9600.
266 -)))|(% style="width:346px" %)(((
262 +)))|(% style="width:190px" %)(((
267 267  (((
268 268  AT+BAUDR=9600
269 269  )))
... ... @@ -272,11 +272,11 @@
272 272  Options: (1200,2400,4800,14400,19200,115200)
273 273  )))
274 274  )))
275 -|(% style="width:128px" %)(((
271 +|(% style="width:110px" %)(((
276 276  AT+PARITY
277 -)))|(% style="width:305px" %)(((
273 +)))|(% style="width:190px" %)(((
278 278  Set UART parity (for RS485 connection)
279 -)))|(% style="width:346px" %)(((
275 +)))|(% style="width:190px" %)(((
280 280  (((
281 281  AT+PARITY=0
282 282  )))
... ... @@ -285,9 +285,9 @@
285 285  Option: 0: no parity, 1: odd parity, 2: even parity
286 286  )))
287 287  )))
288 -|(% style="width:128px" %)(((
284 +|(% style="width:110px" %)(((
289 289  AT+STOPBIT
290 -)))|(% style="width:305px" %)(((
286 +)))|(% style="width:190px" %)(((
291 291  (((
292 292  Set serial stopbit (for RS485 connection)
293 293  )))
... ... @@ -295,7 +295,7 @@
295 295  (((
296 296  
297 297  )))
298 -)))|(% style="width:346px" %)(((
294 +)))|(% style="width:190px" %)(((
299 299  (((
300 300  AT+STOPBIT=0 for 1bit
301 301  )))
... ... @@ -317,15 +317,15 @@
317 317  )))
318 318  )))
319 319  
320 -(% border="1" style="background-color:#ffffcc; color:green; width:806px" %)
321 -|**AT Commands**|(% style="width:418px" %)**Description**|(% style="width:256px" %)**Example**
322 -|AT+CFGDEV|(% style="width:418px" %)(((
316 +(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
317 +|=(% style="width: 110px;" %)**AT Commands**|=(% style="width: 190px;" %)**Description**|=(% style="width: 190px;" %)**Example**
318 +|AT+CFGDEV|(% style="width:110px" %)(((
323 323  This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
324 324  
325 325  AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
326 326  
327 327  mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
328 -)))|(% style="width:256px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
324 +)))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
329 329  
330 330  === 3.3.3 Configure read commands for each sampling ===
331 331  
... ... @@ -372,8 +372,8 @@
372 372  
373 373  **AT+DATACUTx : **This command defines how to handle the return from AT+COMMANDx, max return length is 45 bytes.
374 374  
375 -(% border="1" style="background-color:#4bacc6; color:white; width:725px" %)
376 -|(% style="width:722px" %)(((
371 +(% border="1" style="background-color:#4bacc6; color:white; width:510px" %)
372 +|(% style="width:510px" %)(((
377 377  **AT+DATACUTx=a,b,c**
378 378  
379 379  * **a: length for the return of AT+COMMAND**
... ... @@ -499,33 +499,35 @@
499 499  
500 500  == 3.4 Uplink Payload ==
501 501  
502 -(% border="1" style="background-color:#4bacc6; color:white; width:734px" %)
503 -|**Size(bytes)**|(% style="width:120px" %)**2**|(% style="width:116px" %)**1**|(% style="width:386px" %)**Length depends on the return from the commands**
504 -|Value|(% style="width:120px" %)(((
505 -Battery(mV)
506 506  
507 -&
499 +[[image:image-20220606110929-1.png]]
508 508  
509 -Interrupt _Flag
510 -)))|(% style="width:116px" %)(((
511 -PAYLOAD_VER
512 -
513 -
514 -)))|(% 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.
515 -
516 516  Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
517 517  
518 518  
519 519  == 3.5 Configure RS485-BL via AT or Downlink ==
520 520  
506 +(((
521 521  User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
508 +)))
522 522  
510 +(((
523 523  There are two kinds of Commands:
512 +)))
524 524  
525 -* (% 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]]
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]]
516 +)))
526 526  
527 -* (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-LN.  User can see these commands below:
518 +* (((
519 +(% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-LN.  User can see these commands below:
520 +)))
528 528  
522 +(((
523 +
524 +)))
525 +
526 +
529 529  === 3.5.1 Common Commands ===
530 530  
531 531  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]]
... ... @@ -544,142 +544,282 @@
544 544  
545 545  
546 546  
545 +
547 547  ==== **RS485 Debug Command** ====
548 548  
548 +(((
549 549  This command is used to configure the RS485 devices; they won’t be used during sampling.
550 +)))
550 550  
551 -* **AT Command**
552 +* (((
553 +**AT Command**
554 +)))
552 552  
553 553  (% class="box infomessage" %)
554 554  (((
558 +(((
555 555  **AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m**
556 556  )))
561 +)))
557 557  
563 +(((
558 558  m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
565 +)))
559 559  
560 -* **Downlink Payload**
567 +* (((
568 +**Downlink Payload**
569 +)))
561 561  
571 +(((
562 562  Format: A8 MM NN XX XX XX XX YY
573 +)))
563 563  
575 +(((
564 564  Where:
577 +)))
565 565  
566 -* MM: 1: add CRC-16/MODBUS ; 0: no CRC
567 -* NN: The length of RS485 command
568 -* XX XX XX XX: RS485 command total NN bytes
569 -* YY: How many bytes will be uplink from the return of this RS485 command,
570 -** if YY=0, RS485-LN will execute the downlink command without uplink;
571 -** if YY>0, RS485-LN will uplink total YY bytes from the output of this RS485 command; Fport=200
572 -** if YY=FF, RS485-LN will uplink RS485 output with the downlink command content; Fport=200.
579 +* (((
580 +MM: 1: add CRC-16/MODBUS ; 0: no CRC
581 +)))
582 +* (((
583 +NN: The length of RS485 command
584 +)))
585 +* (((
586 +XX XX XX XX: RS485 command total NN bytes
587 +)))
588 +* (((
589 +(((
590 +YY: How many bytes will be uplink from the return of this RS485 command,
591 +)))
573 573  
593 +* (((
594 +if YY=0, RS485-LN will execute the downlink command without uplink;
595 +)))
596 +* (((
597 +if YY>0, RS485-LN will uplink total YY bytes from the output of this RS485 command; Fport=200
598 +)))
599 +* (((
600 +if YY=FF, RS485-LN will uplink RS485 output with the downlink command content; Fport=200.
601 +)))
602 +)))
603 +
604 +(((
574 574  **Example 1** ~-~-> Configure without ask for uplink (YY=0)
606 +)))
575 575  
608 +(((
576 576  To connect a Modbus Alarm with below commands.
610 +)))
577 577  
578 -* 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.
612 +* (((
613 +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.
614 +)))
579 579  
580 -* 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.
616 +* (((
617 +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.
618 +)))
581 581  
620 +(((
582 582  So if user want to use downlink command to control to RS485 Alarm, he can use:
622 +)))
583 583  
624 +(((
584 584  (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 01 00**(%%): to activate the RS485 Alarm
626 +)))
585 585  
628 +(((
586 586  (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
630 +)))
587 587  
632 +(((
588 588  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.
634 +)))
589 589  
636 +(((
637 +
638 +)))
590 590  
640 +(((
591 591  **Example 2** ~-~-> Configure with requesting uplink and original downlink command (**YY=FF**)
642 +)))
592 592  
644 +(((
593 593  User in IoT server send a downlink command: (% style="color:#4f81bd" %)**A8 01 06 0A 08 00 04 00 01 YY**
646 +)))
594 594  
648 +(((
649 +
650 +)))
595 595  
652 +(((
596 596  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:
654 +)))
597 597  
656 +(((
598 598   **A8** (% style="color:#4f81bd" %)**0A 08 00 04 00  **(% style="color:red" %)**01 06** ** **(% style="color:green" %)**0A 08 00 04 00 00**
658 +)))
599 599  
660 +(((
600 600   [[image:1654159460680-153.png]]
662 +)))
601 601  
602 602  
603 603  
666 +
604 604  ==== **Set Payload version** ====
605 605  
669 +(((
606 606  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.
671 +)))
607 607  
608 -* **AT Command:**
673 +* (((
674 +**AT Command:**
675 +)))
609 609  
610 610  (% class="box infomessage" %)
611 611  (((
679 +(((
612 612  **AT+PAYVER: Set PAYVER field = 1**
613 613  )))
682 +)))
614 614  
615 -* **Downlink Payload:**
684 +* (((
685 +**Downlink Payload:**
686 +)))
616 616  
688 +(((
617 617  **0xAE 01**  ~-~-> Set PAYVER field =  0x01
690 +)))
618 618  
692 +(((
619 619  **0xAE 0F**   ~-~-> Set PAYVER field =  0x0F
694 +)))
620 620  
621 621  
622 622  
698 +
623 623  ==== **Set RS485 Sampling Commands** ====
624 624  
701 +(((
625 625  AT+COMMANDx or AT+DATACUTx
703 +)))
626 626  
705 +(((
627 627  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"]].
707 +)))
628 628  
709 +(((
710 +
711 +)))
629 629  
630 -* **AT Command:**
713 +* (((
714 +**AT Command:**
715 +)))
631 631  
632 632  (% class="box infomessage" %)
633 633  (((
719 +(((
634 634  **AT+COMMANDx: Configure RS485 read command to sensor.**
635 635  )))
722 +)))
636 636  
637 637  (% class="box infomessage" %)
638 638  (((
726 +(((
639 639  **AT+DATACUTx: Configure how to handle return from RS485 devices.**
640 640  )))
729 +)))
641 641  
731 +(((
732 +
733 +)))
642 642  
643 -* **Downlink Payload:**
735 +* (((
736 +**Downlink Payload:**
737 +)))
644 644  
739 +(((
645 645  **0xAF** downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
741 +)))
646 646  
743 +(((
647 647  (% style="color:red" %)**Note**(%%): if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
745 +)))
648 648  
747 +(((
649 649  Format: AF MM NN LL XX XX XX XX YY
749 +)))
650 650  
751 +(((
651 651  Where:
753 +)))
652 652  
653 -* MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
654 -* NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
655 -* LL:  The length of AT+COMMAND or AT+DATACUT command
656 -* XX XX XX XX: AT+COMMAND or AT+DATACUT command
657 -* 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.
755 +* (((
756 +MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
757 +)))
758 +* (((
759 +NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
760 +)))
761 +* (((
762 +LL:  The length of AT+COMMAND or AT+DATACUT command
763 +)))
764 +* (((
765 +XX XX XX XX: AT+COMMAND or AT+DATACUT command
766 +)))
767 +* (((
768 +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.
769 +)))
658 658  
771 +(((
659 659  **Example:**
773 +)))
660 660  
775 +(((
661 661  (% 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
777 +)))
662 662  
779 +(((
663 663  (% 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**
781 +)))
664 664  
783 +(((
665 665  (% 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**
785 +)))
666 666  
667 667  
668 668  
789 +
669 669  ==== **Fast command to handle MODBUS device** ====
670 670  
792 +(((
671 671  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]].
794 +)))
672 672  
796 +(((
673 673  This command is valid since v1.3 firmware version
798 +)))
674 674  
800 +(((
675 675  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.
802 +)))
676 676  
804 +(((
805 +
806 +)))
677 677  
808 +(((
678 678  **Example:**
810 +)))
679 679  
680 -* AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2 are not configure (0,0,0). So RS485-LN.
681 -* 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.
682 -* 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.
812 +* (((
813 +AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2 are not configure (0,0,0). So RS485-LN.
814 +)))
815 +* (((
816 +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.
817 +)))
818 +* (((
819 +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.
820 +)))
683 683  
684 684  [[image:image-20220602165351-6.png]]
685 685  
... ... @@ -687,201 +687,372 @@
687 687  
688 688  
689 689  
828 +
690 690  ==== **RS485 command timeout** ====
691 691  
831 +(((
692 692  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.
833 +)))
693 693  
835 +(((
694 694  Default value: 0, range:  0 ~~ 65 seconds
837 +)))
695 695  
696 -* **AT Command:**
839 +* (((
840 +**AT Command:**
841 +)))
697 697  
698 698  (% class="box infomessage" %)
699 699  (((
845 +(((
700 700  **AT+CMDDLaa=hex(bb cc)*1000**
701 701  )))
848 +)))
702 702  
850 +(((
703 703  **Example:**
852 +)))
704 704  
854 +(((
705 705  **AT+CMDDL1=1000** to send the open time to 1000ms
856 +)))
706 706  
858 +(((
859 +
860 +)))
707 707  
708 -* **Downlink Payload:**
862 +* (((
863 +**Downlink Payload:**
864 +)))
709 709  
866 +(((
710 710  **0x AA aa bb cc**
868 +)))
711 711  
870 +(((
712 712  Same as: AT+CMDDLaa=hex(bb cc)*1000
872 +)))
713 713  
874 +(((
714 714   **Example:**
876 +)))
715 715  
878 +(((
716 716   0xAA 01 00 01  ~-~-> Same as **AT+CMDDL1=1000 ms**
880 +)))
717 717  
718 718  
719 719  
884 +
720 720  ==== **Uplink payload mode** ====
721 721  
887 +(((
722 722  Define to use one uplink or multiple uplinks for the sampling.
889 +)))
723 723  
891 +(((
724 724  The use of this command please see: [[Compose Uplink payload>>||anchor="H3.3.4Composetheuplinkpayload"]]
893 +)))
725 725  
726 -* **AT Command:**
895 +* (((
896 +**AT Command:**
897 +)))
727 727  
728 728  (% class="box infomessage" %)
729 729  (((
901 +(((
730 730  **AT+DATAUP=0**
731 731  )))
904 +)))
732 732  
733 733  (% class="box infomessage" %)
734 734  (((
908 +(((
735 735  **AT+DATAUP=1**
736 736  )))
911 +)))
737 737  
913 +(((
914 +
915 +)))
738 738  
739 -* **Downlink Payload:**
917 +* (((
918 +**Downlink Payload:**
919 +)))
740 740  
921 +(((
741 741  **0xAD 00**  **~-~->** Same as AT+DATAUP=0
923 +)))
742 742  
925 +(((
743 743  **0xAD 01**  **~-~->** Same as AT+DATAUP=1
927 +)))
744 744  
745 745  
746 746  
931 +
747 747  ==== **Manually trigger an Uplink** ====
748 748  
934 +(((
749 749  Ask device to send an uplink immediately.
936 +)))
750 750  
751 -* **AT Command:**
938 +* (((
939 +**AT Command:**
940 +)))
752 752  
942 +(((
753 753  No AT Command for this, user can press the [[ACT button>>||anchor="H3.7Buttons"]] for 1 second for the same.
944 +)))
754 754  
946 +(((
947 +
948 +)))
755 755  
756 -* **Downlink Payload:**
950 +* (((
951 +**Downlink Payload:**
952 +)))
757 757  
954 +(((
758 758  **0x08 FF**, RS485-LN will immediately send an uplink.
956 +)))
759 759  
760 760  
761 761  
960 +
762 762  ==== **Clear RS485 Command** ====
763 763  
963 +(((
764 764  The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
965 +)))
765 765  
766 -* **AT Command:**
967 +* (((
968 +**AT Command:**
969 +)))
767 767  
971 +(((
768 768  **AT+CMDEAR=mm,nn**   mm: start position of erase ,nn: stop position of erase
973 +)))
769 769  
975 +(((
770 770  Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
977 +)))
771 771  
979 +(((
772 772  Example screen shot after clear all RS485 commands. 
981 +)))
773 773  
983 +(((
984 +
985 +)))
774 774  
987 +(((
775 775  The uplink screen shot is:
989 +)))
776 776  
777 777  [[image:1654160691922-496.png]]
778 778  
779 779  
780 -* **Downlink Payload:**
994 +* (((
995 +**Downlink Payload:**
996 +)))
781 781  
998 +(((
782 782  **0x09 aa bb** same as AT+CMDEAR=aa,bb
1000 +)))
783 783  
784 784  
785 785  
1004 +
786 786  ==== **Set Serial Communication Parameters** ====
787 787  
1007 +(((
788 788  Set the Rs485 serial communication parameters:
1009 +)))
789 789  
790 -* **AT Command:**
1011 +* (((
1012 +**AT Command:**
1013 +)))
791 791  
1015 +(((
792 792  Set Baud Rate:
1017 +)))
793 793  
794 794  (% class="box infomessage" %)
795 795  (((
1021 +(((
796 796  **AT+BAUDR=9600**    ~/~/ Options: (1200,2400,4800,14400,19200,115200)
797 797  )))
1024 +)))
798 798  
1026 +(((
799 799  Set UART Parity
1028 +)))
800 800  
801 801  (% class="box infomessage" %)
802 802  (((
1032 +(((
803 803  **AT+PARITY=0**    ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity
804 804  )))
1035 +)))
805 805  
1037 +(((
806 806  Set STOPBIT
1039 +)))
807 807  
808 808  (% class="box infomessage" %)
809 809  (((
1043 +(((
810 810  **AT+STOPBIT=0**    ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
811 811  )))
1046 +)))
812 812  
1048 +(((
1049 +
1050 +)))
813 813  
814 -* **Downlink Payload:**
1052 +* (((
1053 +**Downlink Payload:**
1054 +)))
815 815  
1056 +(((
816 816  **A7 01 aa bb**: Same  AT+BAUDR=hex(aa bb)*100
1058 +)))
817 817  
1060 +(((
818 818  **Example:**
1062 +)))
819 819  
820 -* A7 01 00 60   same as AT+BAUDR=9600
821 -* A7 01 04 80  same as AT+BAUDR=115200
1064 +* (((
1065 +A7 01 00 60   same as AT+BAUDR=9600
1066 +)))
1067 +* (((
1068 +A7 01 04 80  same as AT+BAUDR=115200
1069 +)))
822 822  
1071 +(((
823 823  A7 02 aa: Same as  AT+PARITY=aa  (aa value: 00 , 01 or 02)
1073 +)))
824 824  
1075 +(((
825 825  A7 03 aa: Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
1077 +)))
826 826  
827 827  
1080 +
1081 +
828 828  == 3.6 Listening mode for RS485 network ==
829 829  
1084 +(((
830 830  This feature support since firmware v1.4
1086 +)))
831 831  
1088 +(((
832 832  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.
1090 +)))
833 833  
834 834  [[image:image-20220602171200-8.png||height="567" width="1007"]]
835 835  
1094 +(((
836 836  To enable the listening mode, use can run the command AT+RXMODE.
1096 +)))
837 837  
1098 +(((
1099 +
1100 +)))
838 838  
839 -(% border="1" style="background-color:#ffffcc; width:500px" %)
840 -|=(% style="width: 161px;" %)**Command example:**|=(% style="width: 337px;" %)**Function**
841 -|(% 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.
842 -|(% 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
843 -|(% style="width:161px" %)AT+RXMODE=0,0|(% style="width:337px" %)Disable listening mode. This is the default settings.
844 -|(% style="width:161px" %) |(% style="width:337px" %)A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 ~| cc)
1102 +(% border="1" cellspacing="10" style="background-color:#ffffcc; width:500px" %)
1103 +|=(% style="width: 161px;" %)(((
1104 +**Command example:**
1105 +)))|=(% style="width: 337px;" %)(((
1106 +**Function**
1107 +)))
1108 +|(% style="width:161px" %)(((
1109 +AT+RXMODE=1,10
1110 +)))|(% style="width:337px" %)(((
1111 +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.
1112 +)))
1113 +|(% style="width:161px" %)(((
1114 +AT+RXMODE=2,500
1115 +)))|(% style="width:337px" %)(((
1116 +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
1117 +)))
1118 +|(% style="width:161px" %)(((
1119 +AT+RXMODE=0,0
1120 +)))|(% style="width:337px" %)(((
1121 +Disable listening mode. This is the default settings.
1122 +)))
1123 +|(% style="width:161px" %)(((
1124 +
1125 +)))|(% style="width:337px" %)(((
1126 +A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
1127 +)))
845 845  
1129 +(((
846 846  **Downlink Command:**
1131 +)))
847 847  
1133 +(((
848 848  **0xA6 aa bb cc ** same as AT+RXMODE=aa,(bb<<8 | cc)
1135 +)))
849 849  
1137 +(((
1138 +
1139 +)))
850 850  
1141 +(((
851 851  **Example**:
1143 +)))
852 852  
1145 +(((
853 853  The RS485-LN is set to AT+RXMODE=2,1000
1147 +)))
854 854  
1149 +(((
855 855  There is a two Modbus commands in the RS485 network as below:
1151 +)))
856 856  
1153 +(((
857 857  The Modbus master send a command: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b
1155 +)))
858 858  
1157 +(((
859 859  And Modbus slave reply with: (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
1159 +)))
860 860  
1161 +(((
861 861  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
1163 +)))
862 862  
1165 +(((
863 863  [[image:image-20220602171200-9.png]]
1167 +)))
864 864  
1169 +(((
1170 +
1171 +)))
865 865  
1173 +(((
866 866  (% 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.
1175 +)))
867 867  
868 868  
869 869  == 3.7 Buttons ==
870 870  
871 871  
872 -(% border="1" style="background-color:#f7faff; width:500px" %)
873 -|=**Button**|=(% style="width: 1420px;" %)**Feature**
874 -|**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**
875 -|**RST**|(% style="width:1420px" %)Reboot RS485
876 -|**PRO**|(% style="width:1420px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1181 +(% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1182 +|=(% style="width: 30px;" %)**Button**|=(% style="width: 355px;" %)**Feature**
1183 +|(% style="width:30px" %)**ACT**|(% style="width:355px" %)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**
1184 +|(% style="width:30px" %)**RST**|(% style="width:355px" %)Reboot RS485
1185 +|(% style="width:30px" %)**PRO**|(% style="width:355px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
877 877  
878 878  
879 879  == 3.8 LEDs ==
880 880  
881 -(% border="1" style="background-color:#f7faff; width:500px" %)
882 -|=**LEDs**|=**Feature**
883 -|**PWR**|Always on if there is power
884 -|**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.
1190 +(% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1191 +|=(% style="width: 30px;" %)**LEDs**|=(% style="width: 400px;" %)**Feature**
1192 +|(% style="width:30px" %)**PWR**|=(% style="width: 400px;" %)Always on if there is power
1193 +|(% style="width:30px" %)**SYS**|=(% style="width: 400px;" %)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.
885 885  
886 886  
887 887  = 4. Case Study =
... ... @@ -893,19 +893,26 @@
893 893  
894 894  == 5.1 Access AT Command ==
895 895  
1205 +(((
896 896  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.
1207 +)))
897 897  
898 898  [[image:1654162355560-817.png]]
899 899  
900 900  
1212 +(((
901 901  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:
1214 +)))
902 902  
903 903  [[image:1654162368066-342.png]]
904 904  
905 905  
1219 +(((
906 906  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/]]
1221 +)))
907 907  
908 908  
1224 +
909 909  == 5.2 Common AT Command Sequence ==
910 910  
911 911  === 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
... ... @@ -1060,8 +1060,6 @@
1060 1060  * (% style="color:blue" %)**RU864**(%%): frequency bands RU864
1061 1061  * (% style="color:blue" %)**KZ865**(%%): frequency bands KZ865
1062 1062  
1063 -
1064 -
1065 1065  = 9.Packing Info =
1066 1066  
1067 1067  
... ... @@ -1078,8 +1078,6 @@
1078 1078  * Package Size / pcs : 14.5 x 8 x 5 cm
1079 1079  * Weight / pcs : 170g
1080 1080  
1081 -
1082 -
1083 1083  = 10. FCC Caution for RS485LN-US915 =
1084 1084  
1085 1085  (((
image-20220606110929-1.png
Author
... ... @@ -1,0 +1,1 @@
1 +XWiki.Xiaoling
Size
... ... @@ -1,0 +1,1 @@
1 +13.9 KB
Content

Applications

Navigation

Copyright ©2010-2024 Dragino Technology Co., LTD. All rights reserved
Dragino Wiki v2.0