Skip to Content
Last modified by Xiaoling on 2025/04/23 15:57
From version 29.7
edited by Xiaoling
on 2022/06/01 18:01
Change comment: There is no comment for this version
To version 25.1
edited by Xiaoling
on 2022/05/23 10:26
Change comment: Uploaded new attachment "1653272787040-634.png", version {1}

Summary

Details

Page properties
Content
... ... @@ -7,15 +7,12 @@
7 7  **RS485-BL – Waterproof RS485 to LoRaWAN Converter User Manual**
8 8  
9 9  
10 -
11 11  **Table of Contents:**
12 12  
13 -{{toc/}}
14 14  
15 15  
16 16  
17 17  
18 -
19 19  = 1.Introduction =
20 20  
21 21  == 1.1 What is RS485-BL RS485 to LoRaWAN Converter ==
... ... @@ -162,8 +162,6 @@
162 162  
163 163  (((
164 164  The RS485-BL is configured as LoRaWAN OTAA Class A 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-BL. It will auto join the network via OTAA.
165 -
166 -
167 167  )))
168 168  
169 169  == 3.2 Example to join LoRaWAN network ==
... ... @@ -227,9 +227,7 @@
227 227  == 3.3 Configure Commands to read data ==
228 228  
229 229  (((
230 -There are plenty of RS485 and TTL level devices in the market and each device has different command to read the valid data. To support these devices in flexible, RS485-BL supports flexible command set. User can use [[AT Commands or LoRaWAN Downlink>>||anchor="H3.5ConfigureRS485-BLviaATorDownlink"]] Command to configure how RS485-BL should read the sensor and how to handle the return from RS485 or TTL sensors.
231 -
232 -
225 +There are plenty of RS485 and TTL level devices in the market and each device has different command to read the valid data. To support these devices in flexible, RS485-BL supports flexible command set. User can use [[AT Commands or LoRaWAN Downlink>>path:#AT_COMMAND]] Command to configure how RS485-BL should read the sensor and how to handle the return from RS485 or TTL sensors.
233 233  )))
234 234  
235 235  === 3.3.1 onfigure UART settings for RS485 or TTL communication ===
... ... @@ -508,82 +508,64 @@
508 508  
509 509  [[image:1653271763403-806.png]]
510 510  
511 -=== 3.3.4 Compose the uplink payload ===
512 512  
513 -(((
505 +
506 +
507 +1.
508 +11.
509 +111. Compose the uplink payload
510 +
514 514  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.**
515 -)))
516 516  
517 -(((
518 -(% style="color:#4f81bd" %)**Examples: AT+DATAUP=0**
519 -)))
520 520  
521 -(((
522 -Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**A SIGNLE UPLINK**.
523 -)))
514 +**Examples: AT+DATAUP=0**
524 524  
525 -(((
516 +Compose the uplink payload with value returns in sequence and send with **A SIGNLE UPLINK**.
517 +
526 526  Final Payload is
527 -)))
528 528  
529 -(((
530 -(% style="color:#4f81bd" %)Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx
531 -)))
520 +Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx
532 532  
533 -(((
534 534  Where PAYVER is defined by AT+PAYVER, below is an example screen shot.
535 -)))
536 536  
537 -[[image:1653272787040-634.png||height="515" width="719"]]
524 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image019.png]]
538 538  
539 -(((
540 -(% style="color:#4f81bd" %)**Examples: AT+DATAUP=1**
541 -)))
542 542  
543 -(((
544 -Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
545 -)))
546 546  
547 -(((
528 +**Examples: AT+DATAUP=1**
529 +
530 +Compose the uplink payload with value returns in sequence and send with **Multiply UPLINKs**.
531 +
548 548  Final Payload is
549 -)))
550 550  
551 -(((
552 -(% style="color:#4f81bd" %)Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA
553 -)))
534 +Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA
554 554  
555 -1. (((
556 -Battery Info (2 bytes): Battery voltage
557 -)))
558 -1. (((
559 -PAYVER (1 byte): Defined by AT+PAYVER
560 -)))
561 -1. (((
562 -PAYLOAD COUNT (1 byte): Total how many uplinks of this sampling.
563 -)))
564 -1. (((
565 -PAYLOAD# (1 byte): Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
566 -)))
567 -1. (((
568 -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
569 -)))
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
570 570  
571 -[[image:1653272817147-600.png||height="437" width="717"]]
542 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image020.png]]
572 572  
544 +
573 573  So totally there will be 3 uplinks for this sampling, each uplink includes 6 bytes DATA
574 574  
575 -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
576 576  
577 -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
578 578  
579 -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
580 580  
553 +
554 +
581 581  Below are the uplink payloads:
582 582  
583 -[[image:1653272901032-107.png]]
557 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image021.png]]
584 584  
585 -(% style="color:red" %)Notice: the Max bytes is according to the max support bytes in different Frequency Bands for lowest SF. As below:
586 586  
560 +Notice: the Max bytes is according to the max support bytes in different Frequency Bands for lowest SF. As below:
561 +
587 587   ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink ( so 51 -5 = 46 max valid date)
588 588  
589 589   * For AU915/AS923 bands, if UplinkDwell time=1, max 11 bytes for each uplink ( so 11 -5 = 6 max valid date).
... ... @@ -592,121 +592,90 @@
592 592  
593 593   ~* For all other bands: max 51 bytes for each uplink  ( so 51 -5 = 46 max valid date).
594 594  
595 -=== 3.3.5 Uplink on demand ===
596 596  
597 -(((
571 +
572 +1.
573 +11.
574 +111. Uplink on demand
575 +
598 598  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.
599 -)))
600 600  
601 -(((
602 602  Downlink control command:
603 -)))
604 604  
605 -(((
606 -**0x08 command**: Poll an uplink with current command set in RS485-BL.
607 -)))
580 +[[0x08 command>>path:#downlink_08]]: Poll an uplink with current command set in RS485-BL.
608 608  
609 -(((
610 -**0xA8 command**: Send a command to RS485-BL and uplink the output from sensors.
611 -)))
582 +[[0xA8 command>>path:#downlink_A8]]: Send a command to RS485-BL and uplink the output from sensors.
612 612  
613 -=== 3.3.6 Uplink on Interrupt ===
614 614  
615 -Put the interrupt sensor between 3.3v_out and GPIO ext.
616 616  
617 -[[image:1653273818896-432.png]]
586 +1.
587 +11.
588 +111. Uplink on Interrupt
618 618  
619 -(((
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 +
620 620  AT+INTMOD=0  Disable Interrupt
621 -)))
622 622  
623 -(((
624 624  AT+INTMOD=1  Interrupt trigger by rising or falling edge.
625 -)))
626 626  
627 -(((
628 628  AT+INTMOD=2  Interrupt trigger by falling edge. ( Default Value)
629 -)))
630 630  
631 -(((
632 632  AT+INTMOD=3  Interrupt trigger by rising edge.
633 -)))
634 634  
635 -== 3.4 Uplink Payload ==
636 636  
637 -(% border="1" style="background-color:#4f81bd; color:white; width:850px" %)
638 -|**Size(bytes)**|(% style="width:130px" %)**2**|(% style="width:93px" %)**1**|(% style="width:509px" %)**Length depends on the return from the commands**
639 -|Value|(% style="width:130px" %)(((
640 -(((
601 +1.
602 +11. Uplink Payload
603 +
604 +|**Size(bytes)**|**2**|**1**|**Length depends on the return from the commands**
605 +|Value|(((
641 641  Battery(mV)
642 -)))
643 643  
644 -(((
645 645  &
646 -)))
647 647  
648 -(((
649 649  Interrupt _Flag
650 -)))
651 -)))|(% style="width:93px" %)(((
611 +)))|(((
652 652  PAYLOAD_VER
653 653  
654 654  
655 -)))|(% 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.
656 656  
657 657  Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
658 658  
659 -(((
619 +
660 660  function Decoder(bytes, port) {
661 -)))
662 662  
663 -(((
664 664  ~/~/Payload Formats of RS485-BL Deceive
665 -)))
666 666  
667 -(((
668 668  return {
669 -)))
670 670  
671 -(((
672 672   ~/~/Battery,units:V
673 -)))
674 674  
675 -(((
676 676   BatV:((bytes[0]<<8 | bytes[1])&0x7fff)/1000,
677 -)))
678 678  
679 -(((
680 680   ~/~/GPIO_EXTI 
681 -)))
682 682  
683 -(((
684 684   EXTI_Trigger:(bytes[0] & 0x80)? "TRUE":"FALSE",
685 -)))
686 686  
687 -(((
688 688   ~/~/payload of version
689 -)))
690 690  
691 -(((
692 692   Pay_ver:bytes[2],
693 -)))
694 694  
695 -(((
696 696   };
697 -)))
698 698  
699 -(((
700 700   }
701 -)))
702 702  
703 -(((
642 +
643 +
644 +
645 +
646 +
647 +
704 704  TTN V3 uplink screen shot.
705 -)))
706 706  
707 -[[image:1653274001211-372.png||height="192" width="732"]]
650 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image023.png]]
708 708  
709 -== 3.5 Configure RS485-BL via AT or Downlink ==
652 +1.
653 +11. Configure RS485-BL via AT or Downlink
710 710  
711 711  User can configure RS485-BL via [[AT Commands >>path:#_​Using_the_AT]]or LoRaWAN Downlink Commands
712 712  
1653272817147-600.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -143.3 KB
Content
1653272901032-107.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -197.8 KB
Content
1653273818896-432.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -31.6 KB
Content
1653274001211-372.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -91.4 KB
Content