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7 7  **RS485-BL – Waterproof RS485 to LoRaWAN Converter User Manual**
8 8  
9 9  
10 -
11 11  **Table of Contents:**
12 12  
13 13  
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14 14  
15 15  
16 16  
17 -
18 18  = 1.Introduction =
19 19  
20 20  == 1.1 What is RS485-BL RS485 to LoRaWAN Converter ==
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503 503  
504 504  [[image:1653271763403-806.png]]
505 505  
506 -=== 3.3.4 Compose the uplink payload ===
507 507  
508 -(((
505 +
506 +
507 +1.
508 +11.
509 +111. Compose the uplink payload
510 +
509 509  Through AT+COMMANDx and AT+DATACUTx we got valid value from each RS485 commands, Assume these valid value are RETURN1, RETURN2, .., to RETURNx. The next step is how to compose the LoRa Uplink Payload by these RETURNs. The command is **AT+DATAUP.**
510 -)))
511 511  
512 -(((
513 -(% style="color:#4f81bd" %)**Examples: AT+DATAUP=0**
514 -)))
515 515  
516 -(((
517 -Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**A SIGNLE UPLINK**.
518 -)))
514 +**Examples: AT+DATAUP=0**
519 519  
520 -(((
516 +Compose the uplink payload with value returns in sequence and send with **A SIGNLE UPLINK**.
517 +
521 521  Final Payload is
522 -)))
523 523  
524 -(((
525 -(% style="color:#4f81bd" %)Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx
526 -)))
520 +Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx
527 527  
528 -(((
529 529  Where PAYVER is defined by AT+PAYVER, below is an example screen shot.
530 -)))
531 531  
532 -[[image:1653272787040-634.png||height="515" width="719"]]
524 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image019.png]]
533 533  
534 -(((
535 -(% style="color:#4f81bd" %)**Examples: AT+DATAUP=1**
536 -)))
537 537  
538 -(((
539 -Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
540 -)))
541 541  
542 -(((
528 +**Examples: AT+DATAUP=1**
529 +
530 +Compose the uplink payload with value returns in sequence and send with **Multiply UPLINKs**.
531 +
543 543  Final Payload is
544 -)))
545 545  
546 -(((
547 -(% style="color:#4f81bd" %)Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA
548 -)))
534 +Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA
549 549  
550 -1. (((
551 -Battery Info (2 bytes): Battery voltage
552 -)))
553 -1. (((
554 -PAYVER (1 byte): Defined by AT+PAYVER
555 -)))
556 -1. (((
557 -PAYLOAD COUNT (1 byte): Total how many uplinks of this sampling.
558 -)))
559 -1. (((
560 -PAYLOAD# (1 byte): Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
561 -)))
562 -1. (((
563 -DATA: Valid value: max 6 bytes(US915 version here, Notice*!) for each uplink so each uplink <= 11 bytes. For the last uplink, DATA will might less than 6 bytes
564 -)))
536 +1. Battery Info (2 bytes): Battery voltage
537 +1. PAYVER (1 byte): Defined by AT+PAYVER
538 +1. PAYLOAD COUNT (1 byte): Total how many uplinks of this sampling.
539 +1. PAYLOAD# (1 byte): Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
540 +1. DATA: Valid value: max 6 bytes(US915 version here, [[Notice*!>>path:#max_byte]]) for each uplink so each uplink <= 11 bytes. For the last uplink, DATA will might less than 6 bytes
565 565  
566 -[[image:1653272817147-600.png||height="437" width="717"]]
542 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image020.png]]
567 567  
544 +
568 568  So totally there will be 3 uplinks for this sampling, each uplink includes 6 bytes DATA
569 569  
570 -DATA1=RETURN1 Valid Value = (% style="background-color:#4f81bd; color:white" %) 20 20 0a 33 90 41
547 +DATA1=RETURN1 Valid Value = 20 20 0a 33 90 41
571 571  
572 -DATA2=1^^st^^ ~~ 6^^th^^ byte of Valid value of RETURN10= (% style="background-color:#4f81bd; color:white" %)02 aa 05 81 0a 20
549 +DATA2=1^^st^^ ~~ 6^^th^^ byte of Valid value of RETURN10= 02 aa 05 81 0a 20
573 573  
574 -DATA3=7^^th^^ ~~ 11^^th^^ bytes of Valid value of RETURN10 =(% style="background-color:#4f81bd; color:white" %) 20 20 20 2d 30
551 +DATA3=7^^th^^ ~~ 11^^th^^ bytes of Valid value of RETURN10 = 20 20 20 2d 30
575 575  
553 +
554 +
576 576  Below are the uplink payloads:
577 577  
578 -[[image:1653272901032-107.png]]
557 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image021.png]]
579 579  
580 -(% style="color:red" %)Notice: the Max bytes is according to the max support bytes in different Frequency Bands for lowest SF. As below:
581 581  
560 +Notice: the Max bytes is according to the max support bytes in different Frequency Bands for lowest SF. As below:
561 +
582 582   ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink ( so 51 -5 = 46 max valid date)
583 583  
584 584   * For AU915/AS923 bands, if UplinkDwell time=1, max 11 bytes for each uplink ( so 11 -5 = 6 max valid date).
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587 587  
588 588   ~* For all other bands: max 51 bytes for each uplink  ( so 51 -5 = 46 max valid date).
589 589  
590 -=== 3.3.5 Uplink on demand ===
591 591  
592 -(((
571 +
572 +1.
573 +11.
574 +111. Uplink on demand
575 +
593 593  Except uplink periodically, RS485-BL is able to uplink on demand. The server sends downlink command to RS485-BL and RS485 will uplink data base on the command.
594 -)))
595 595  
596 -(((
597 597  Downlink control command:
598 -)))
599 599  
600 -(((
601 -**0x08 command**: Poll an uplink with current command set in RS485-BL.
602 -)))
580 +[[0x08 command>>path:#downlink_08]]: Poll an uplink with current command set in RS485-BL.
603 603  
604 -(((
605 -**0xA8 command**: Send a command to RS485-BL and uplink the output from sensors.
606 -)))
582 +[[0xA8 command>>path:#downlink_A8]]: Send a command to RS485-BL and uplink the output from sensors.
607 607  
608 -=== 3.3.6 Uplink on Interrupt ===
609 609  
610 -Put the interrupt sensor between 3.3v_out and GPIO ext.
611 611  
612 -[[image:1653273818896-432.png]]
586 +1.
587 +11.
588 +111. Uplink on Interrupt
613 613  
614 -(((
590 +Put the interrupt sensor between 3.3v_out and GPIO ext.[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image022.png]]
591 +
615 615  AT+INTMOD=0  Disable Interrupt
616 -)))
617 617  
618 -(((
619 619  AT+INTMOD=1  Interrupt trigger by rising or falling edge.
620 -)))
621 621  
622 -(((
623 623  AT+INTMOD=2  Interrupt trigger by falling edge. ( Default Value)
624 -)))
625 625  
626 -(((
627 627  AT+INTMOD=3  Interrupt trigger by rising edge.
628 -)))
629 629  
630 -== 3.4 Uplink Payload ==
631 631  
632 -(% border="1" style="background-color:#4f81bd; color:white; width:850px" %)
633 -|**Size(bytes)**|(% style="width:130px" %)**2**|(% style="width:93px" %)**1**|(% style="width:509px" %)**Length depends on the return from the commands**
634 -|Value|(% style="width:130px" %)(((
635 -(((
601 +1.
602 +11. Uplink Payload
603 +
604 +|**Size(bytes)**|**2**|**1**|**Length depends on the return from the commands**
605 +|Value|(((
636 636  Battery(mV)
637 -)))
638 638  
639 -(((
640 640  &
641 -)))
642 642  
643 -(((
644 644  Interrupt _Flag
645 -)))
646 -)))|(% style="width:93px" %)(((
611 +)))|(((
647 647  PAYLOAD_VER
648 648  
649 649  
650 -)))|(% style="width:509px" %)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.
615 +)))|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.
651 651  
652 652  Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
653 653  
654 -(((
619 +
655 655  function Decoder(bytes, port) {
656 -)))
657 657  
658 -(((
659 659  ~/~/Payload Formats of RS485-BL Deceive
660 -)))
661 661  
662 -(((
663 663  return {
664 -)))
665 665  
666 -(((
667 667   ~/~/Battery,units:V
668 -)))
669 669  
670 -(((
671 671   BatV:((bytes[0]<<8 | bytes[1])&0x7fff)/1000,
672 -)))
673 673  
674 -(((
675 675   ~/~/GPIO_EXTI 
676 -)))
677 677  
678 -(((
679 679   EXTI_Trigger:(bytes[0] & 0x80)? "TRUE":"FALSE",
680 -)))
681 681  
682 -(((
683 683   ~/~/payload of version
684 -)))
685 685  
686 -(((
687 687   Pay_ver:bytes[2],
688 -)))
689 689  
690 -(((
691 691   };
692 -)))
693 693  
694 -(((
695 695   }
696 -)))
697 697  
698 -(((
642 +
643 +
644 +
645 +
646 +
647 +
699 699  TTN V3 uplink screen shot.
700 -)))
701 701  
702 -[[image:1653274001211-372.png||height="192" width="732"]]
650 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image023.png]]
703 703  
704 -== 3.5 Configure RS485-BL via AT or Downlink ==
652 +1.
653 +11. Configure RS485-BL via AT or Downlink
705 705  
706 706  User can configure RS485-BL via [[AT Commands >>path:#_​Using_the_AT]]or LoRaWAN Downlink Commands
707 707  
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