Last modified by Karry Zhuang on 2025/03/06 16:34
<
From version < 44.1 >
edited by Xiaoling
on 2022/06/02 16:53
To version < 38.3 >
edited by Xiaoling
on 2022/06/02 16:10
>
Change comment: There is no comment for this version

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... ... @@ -470,68 +470,110 @@
470 470  Connect the Interrupt pin to RS485-LN INT port and connect the GND pin to V- port. When there is a high voltage (Max 24v) on INT pin. Device will send an uplink packet.
471 471  
472 472  
473 -== 3.4 Uplink Payload ==
473 +1.
474 +11. Uplink Payload
474 474  
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" %)(((
476 +|**Size(bytes)**|**2**|**1**|**Length depends on the return from the commands**
477 +|Value|(((
478 478  Battery(mV)
479 479  
480 480  &
481 481  
482 482  Interrupt _Flag
483 -)))|(% style="width:116px" %)(((
483 +)))|(((
484 484  PAYLOAD_VER
485 485  
486 486  
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.
487 +)))|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.
488 488  
489 489  Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
490 490  
491 491  
492 -== 3.5 Configure RS485-BL via AT or Downlink ==
492 +function Decoder(bytes, port) {
493 493  
494 -User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
494 +~/~/Payload Formats of RS485-BL Deceive
495 495  
496 +return {
497 +
498 + ~/~/Battery,units:V
499 +
500 + BatV:((bytes[0]<<8 | bytes[1])&0x7fff)/1000,
501 +
502 + ~/~/GPIO_EXTI 
503 +
504 + EXTI_Trigger:(bytes[0] & 0x80)? "TRUE":"FALSE",
505 +
506 + ~/~/payload of version
507 +
508 + Pay_ver:bytes[2],
509 +
510 + };
511 +
512 + }
513 +
514 +
515 +
516 +
517 +
518 +
519 +
520 +TTN V3 uplink screen shot.
521 +
522 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image023.png]]
523 +
524 +1.
525 +11. Configure RS485-BL via AT or Downlink
526 +
527 +User can configure RS485-BL via [[AT Commands >>path:#_​Using_the_AT]]or LoRaWAN Downlink Commands
528 +
496 496  There are two kinds of Commands:
497 497  
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 +* **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: http:~/~/wiki.dragino.com/index.php?title=End_Device_AT_Commands_and_Downlink_Commands
499 499  
500 -* (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-LN.  User can see these commands below:
533 +* **Sensor Related Commands**: These commands are special designed for RS485-BL.  User can see these commands below:
501 501  
502 -=== 3.5.1 Common Commands ===
535 +1.
536 +11.
537 +111. Common Commands:
503 503  
504 -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]]
539 +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: [[http:~~/~~/wiki.dragino.com/index.php?title=End_Device_AT_Commands_and_Downlink_Commands>>url:http://wiki.dragino.com/index.php?title=End_Device_AT_Commands_and_Downlink_Commands]]
505 505  
506 506  
507 -=== 3.5.2 Sensor related commands ===
542 +1.
543 +11.
544 +111. Sensor related commands:
508 508  
509 -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.
546 +==== Choose Device Type (RS485 or TTL) ====
510 510  
511 -[[image:image-20220602163333-5.png||height="263" width="1160"]]
548 +RS485-BL can connect to either RS485 sensors or TTL sensor. User need to specify what type of sensor need to connect.
512 512  
513 -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)
550 +* AT Command
514 514  
552 +**AT+MOD=1** ~/~/ Set to support RS485-MODBUS type sensors. User can connect multiply RS485 , Modbus sensors to the A / B pins.
515 515  
516 -=== 3.5.3 Sensor related commands ===
554 +**AT+MOD=2** ~/~/ Set to support TTL Level sensors, User can connect one TTL Sensor to the TXD/RXD/GND pins.
517 517  
518 -==== ====
519 519  
520 -==== **RS485 Debug Command** ====
557 +* Downlink Payload
521 521  
522 -This command is used to configure the RS485 devices; they won’t be used during sampling.
559 +**0A aa**     à same as AT+MOD=aa
523 523  
524 -* **AT Command**
525 525  
526 -(% class="box infomessage" %)
527 -(((
528 -**AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m**
529 -)))
530 530  
531 -m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
563 +==== [[RS485 Debug Command>>path:#downlink_A8]] (AT+CFGDEV) ====
532 532  
533 -* **Downlink Payload**
565 +This command is used to configure the RS485 or TTL sensors; they won’t be used during sampling.
534 534  
567 +* AT Command
568 +
569 +AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
570 +
571 +m: 0: no CRC; 1: add CRC-16/MODBUS in the end of this command.
572 +
573 +
574 +
575 +* Downlink Payload
576 +
535 535  Format: A8 MM NN XX XX XX XX YY
536 536  
537 537  Where:
... ... @@ -539,12 +539,9 @@
539 539  * MM: 1: add CRC-16/MODBUS ; 0: no CRC
540 540  * NN: The length of RS485 command
541 541  * XX XX XX XX: RS485 command total NN bytes
542 -* YY: How many bytes will be uplink from the return of this RS485 command,
543 -** if YY=0, RS485-LN will execute the downlink command without uplink;
544 -** if YY>0, RS485-LN will uplink total YY bytes from the output of this RS485 command; Fport=200
545 -** if YY=FF, RS485-LN will uplink RS485 output with the downlink command content; Fport=200.
584 +* 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
546 546  
547 -**Example 1** ~-~-> Configure without ask for uplink (YY=0)
586 +**Example 1:**
548 548  
549 549  To connect a Modbus Alarm with below commands.
550 550  
... ... @@ -554,76 +554,59 @@
554 554  
555 555  So if user want to use downlink command to control to RS485 Alarm, he can use:
556 556  
557 -(% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 01 00**(%%): to activate the RS485 Alarm
596 +**A8 01 06 0A 05 00 04 00 01 00**: to activate the RS485 Alarm
558 558  
559 -(% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
598 +**A8 01 06 0A 05 00 04 00 00 00**: to deactivate the RS485 Alarm
560 560  
561 561  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.
562 562  
563 563  
564 -**Example 2** ~-~-> Configure with requesting uplink and original downlink command (**YY=FF**)
603 +**Example 2:**
565 565  
566 -User in IoT server send a downlink command: (% style="color:#4f81bd" %)**A8 01 06 0A 08 00 04 00 01 YY**
605 +Check TTL Sensor return:
567 567  
607 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image024.png]]
568 568  
569 -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:
570 570  
571 - **A8** (% style="color:#4f81bd" %)**0A 08 00 04 00  **(% style="color:red" %)**01 06** ** **(% style="color:green" %)**0A 08 00 04 00 00**
572 572  
573 - [[image:1654159460680-153.png]]
574 574  
612 +==== Set Payload version ====
575 575  
576 -
577 -==== **Set Payload version** ====
578 -
579 579  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.
580 580  
581 -* **AT Command:**
616 +* AT Command:
582 582  
583 -(% class="box infomessage" %)
584 -(((
585 -**AT+PAYVER: Set PAYVER field = 1**
586 -)))
618 +AT+PAYVER: Set PAYVER field = 1
587 587  
588 588  
589 -* **Downlink Payload:**
621 +* Downlink Payload:
590 590  
591 -**0xAE 01**  ~-~-> Set PAYVER field =  0x01
623 +0xAE 01   à Set PAYVER field =  0x01
592 592  
593 -**0xAE 0F**   ~-~-> Set PAYVER field =  0x0F
625 +0xAE 0F   à Set PAYVER field =  0x0F
594 594  
595 595  
628 +==== Set RS485 Sampling Commands ====
596 596  
597 -==== **Set RS485 Sampling Commands** ====
598 -
599 599  AT+COMMANDx, AT+DATACUTx and AT+SEARCHx
600 600  
601 -These three commands are used to configure how the RS485-BL polling data from Modbus device. Detail of usage please see : [[polling RS485 device>>||anchor="H3.3.3Configurereadcommandsforeachsampling"]].
632 +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]].
602 602  
603 603  
604 -* **AT Command:**
635 +* AT Command:
605 605  
606 -(% class="box infomessage" %)
607 -(((
608 -**AT+COMMANDx: Configure RS485 read command to sensor.**
609 -)))
637 +AT+COMMANDx: Configure RS485 read command to sensor.
610 610  
611 -(% class="box infomessage" %)
612 -(((
613 -**AT+DATACUTx: Configure how to handle return from RS485 devices.**
614 -)))
639 +AT+DATACUTx: Configure how to handle return from RS485 devices.
615 615  
616 -(% class="box infomessage" %)
617 -(((
618 -**AT+SEARCHx: Configure search command**
619 -)))
641 +AT+SEARCHx: Configure search command
620 620  
621 621  
622 -* **Downlink Payload:**
644 +* Downlink Payload:
623 623  
624 -**0xAF** downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
646 +0xAF downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
625 625  
626 -(% style="color:red" %)**Note**(%%): if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
648 +Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
627 627  
628 628  Format: AF MM NN LL XX XX XX XX YY
629 629  
... ... @@ -630,23 +630,23 @@
630 630  Where:
631 631  
632 632  * MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
633 -* NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
634 -* LL:  The length of AT+COMMAND or AT+DATACUT command
655 +* NN: 0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
656 +* LL: The length of AT+COMMAND or AT+DATACUT command
635 635  * XX XX XX XX: AT+COMMAND or AT+DATACUT command
636 -* 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.
658 +* 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.
637 637  
638 -**Example:**
660 +Example:
639 639  
640 -(% 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
662 +**AF 03 01 06 0A 05 00 04 00 01 00**: Same as AT+COMMAND3=0A 05 00 04 00 01,1
641 641  
642 -(% 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**
664 +**AF 03 02 06 10 01 05 06 09 0A 00**: Same as AT+DATACUT3=**16**,**1**,**5+6+9+10**
643 643  
644 -(% 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**
666 +**AF 03 02 06 0B 02 05 07 08 0A 00**: Same as AT+DATACUT3=**11**,**2**,**5~~7+8~~10**
645 645  
646 646  
647 -**0xAB** downlink command can be used for set AT+SEARCHx
669 +0xAB downlink command can be used for set AT+SEARCHx
648 648  
649 -**Example:** **AB aa 01 03 xx xx xx** (03 here means there are total 3 bytes after 03) So
671 +Example: **AB aa 01 03 xx xx xx** (03 here means there are total 3 bytes after 03) So
650 650  
651 651  * AB aa 01 03 xx xx xx  same as AT+SEARCHaa=1,xx xx xx
652 652  * 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
... ... @@ -654,164 +654,145 @@
654 654  **AB aa 02 03 xx xx xx 02 yy yy**  same as **AT+SEARCHaa=2,xx xx xx+yy yy**
655 655  
656 656  
679 +==== Fast command to handle MODBUS device ====
657 657  
658 -==== **Fast command to handle MODBUS device** ====
659 -
660 660  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]].
661 661  
662 662  This command is valid since v1.3 firmware version
663 663  
664 664  
665 -**AT+MBFUN has only two value:**
686 +AT+MBFUN has only two value:
666 666  
667 -* **AT+MBFUN=1**: Enable Modbus reading. And get response base on the MODBUS return
688 +* AT+MBFUN=1: Enable Modbus reading. And get response base on the MODBUS return
668 668  
669 669  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.
670 670  
671 -* **AT+MBFUN=0**: Disable Modbus fast reading.
692 +* AT+MBFUN=0: Disable Modbus fast reading.
672 672  
673 -**Example:**
694 +Example:
674 674  
675 675  * AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2 are not configure (0,0,0).
676 676  * 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.
677 677  * 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.
678 678  
679 -[[image:1654133913295-597.png]]
700 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image025.png]]
680 680  
681 681  
682 -[[image:1654133954153-643.png]]
703 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image026.png]]
683 683  
684 684  
685 -* **Downlink Commands:**
706 +* Downlink Commands:
686 686  
687 -**A9 aa** ~-~-> Same as AT+MBFUN=aa
708 +A9 aa -à Same as AT+MBFUN=aa
688 688  
689 689  
711 +==== RS485 command timeout ====
690 690  
691 -==== **RS485 command timeout** ====
692 -
693 693  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.
694 694  
695 695  Default value: 0, range:  0 ~~ 5 seconds
696 696  
697 697  
698 -* **AT Command:**
718 +* AT Command:
699 699  
700 -(% class="box infomessage" %)
701 -(((
702 -**AT+CMDDLaa=hex(bb cc)**
703 -)))
720 +AT+CMDDLaa=hex(bb cc)
704 704  
705 -**Example:**
722 +Example:
706 706  
707 707  **AT+CMDDL1=1000** to send the open time to 1000ms
708 708  
709 709  
710 -* **Downlink Payload:**
727 +* Downlink Payload:
711 711  
712 712  0x AA aa bb cc
713 713  
714 714  Same as: AT+CMDDLaa=hex(bb cc)
715 715  
716 - **Example:**
733 + Example:
717 717  
718 - **0xAA 01 03 E8**  ~-~-> Same as **AT+CMDDL1=1000 ms**
735 + 0xAA 01 03 E8  à Same as **AT+CMDDL1=1000 ms**
719 719  
720 720  
738 +==== [[Uplink>>path:#downlink_A8]] payload mode ====
721 721  
722 -==== **Uplink payload mode** ====
723 -
724 724  Define to use one uplink or multiple uplinks for the sampling.
725 725  
726 -The use of this command please see: [[Compose Uplink payload>>||anchor="H3.3.4Composetheuplinkpayload"]]
742 +The use of this command please see: [[Compose Uplink payload>>path:#DataUP]]
727 727  
728 -* **AT Command:**
744 +* AT Command:
729 729  
730 -(% class="box infomessage" %)
731 -(((
732 -**AT+DATAUP=0**
733 -)))
746 +AT+DATAUP=0
734 734  
735 -(% class="box infomessage" %)
736 -(((
737 -**AT+DATAUP=1**
738 -)))
748 +AT+DATAUP=1
739 739  
740 740  
741 -* **Downlink Payload:**
751 +* Downlink Payload:
742 742  
743 -**0xAD 00**  **~-~->** Same as AT+DATAUP=0
753 +0xAD 00   à Same as AT+DATAUP=0
744 744  
745 -**0xAD 01**  **~-~->** Same as AT+DATAUP=1
755 +0xAD 01   à Same as AT+DATAUP=1
746 746  
747 747  
758 +==== Manually trigger an Uplink ====
748 748  
749 -==== **Manually trigger an Uplink** ====
750 -
751 751  Ask device to send an uplink immediately.
752 752  
753 -* **Downlink Payload:**
762 +* Downlink Payload:
754 754  
755 -**0x08 FF**, RS485-BL will immediately send an uplink.
764 +0x08 FF, RS485-BL will immediately send an uplink.
756 756  
757 757  
767 +==== Clear RS485 Command ====
758 758  
759 -==== **Clear RS485 Command** ====
760 -
761 761  The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
762 762  
763 763  
764 -* **AT Command:**
772 +* AT Command:
765 765  
766 -(% style="color:#037691" %)**AT+CMDEAR=mm,nn** (%%) mm: start position of erase ,nn: stop position of erase Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
774 +**AT+CMDEAR=mm,nn**   mm: start position of erase ,nn: stop position of erase
767 767  
776 +Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
777 +
768 768  Example screen shot after clear all RS485 commands. 
769 769  
770 770  
781 +
771 771  The uplink screen shot is:
772 772  
773 -[[image:1654134704555-320.png]]
784 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image023.png]]
774 774  
775 775  
776 -* **Downlink Payload:**
787 +* Downlink Payload:
777 777  
778 -**0x09 aa bb** same as AT+CMDEAR=aa,bb
789 +0x09 aa bb same as AT+CMDEAR=aa,bb
779 779  
780 780  
792 +==== Set Serial Communication Parameters ====
781 781  
782 -==== **Set Serial Communication Parameters** ====
783 -
784 784  Set the Rs485 serial communication parameters:
785 785  
786 -* **AT Command:**
796 +* AT Command:
787 787  
788 788  Set Baud Rate:
789 789  
790 -(% class="box infomessage" %)
791 -(((
792 -**AT+BAUDR=9600**    ~/~/ Options: (1200,2400,4800,14400,19200,115200)
793 -)))
800 +AT+BAUDR=9600    ~/~/ Options: (1200,2400,4800,14400,19200,115200)
794 794  
795 -Set UART Parity
796 796  
797 -(% class="box infomessage" %)
798 -(((
799 -**AT+PARITY=0**    ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity
800 -)))
803 +Set UART parity
801 801  
805 +AT+PARITY=0    ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity
806 +
807 +
802 802  Set STOPBIT
803 803  
804 -(% class="box infomessage" %)
805 -(((
806 -**AT+STOPBIT=0**    ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
807 -)))
810 +AT+STOPBIT=0    ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
808 808  
809 809  
810 -* **Downlink Payload:**
813 +* Downlink Payload:
811 811  
812 -**A7 01 aa bb**: Same  AT+BAUDR=hex(aa bb)*100
815 +A7 01 aa bb: Same  AT+BAUDR=hex(aa bb)*100
813 813  
814 -**Example:**
817 +Example:
815 815  
816 816  * A7 01 00 60   same as AT+BAUDR=9600
817 817  * A7 01 04 80  same as AT+BAUDR=115200
... ... @@ -821,22 +821,287 @@
821 821  A7 03 aa: Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
822 822  
823 823  
827 +==== Control output power duration ====
824 824  
825 -==== **Control output power duration** ====
826 -
827 827  User can set the output power duration before each sampling.
828 828  
829 -* **AT Command:**
831 +* AT Command:
830 830  
831 -**Example:**
833 +Example:
832 832  
833 -**AT+3V3T=1000**  ~/~/ 3V3 output power will open 1s before each sampling.
835 +AT+3V3T=1000 ~/~/ 3V3 output power will open 1s before each sampling.
834 834  
835 -**AT+5VT=1000**  ~/~/ +5V output power will open 1s before each sampling.
837 +AT+5VT=1000 ~/~/ +5V output power will open 1s before each sampling.
836 836  
837 837  
838 -* **LoRaWAN Downlink Command:**
840 +* LoRaWAN Downlink Command:
839 839  
840 -**07 01 aa bb**  Same as AT+5VT=(aa bb)
842 +07 01 aa bb  Same as AT+5VT=(aa bb)
841 841  
842 -**07 02 aa bb**  Same as AT+3V3T=(aa bb)
844 +07 02 aa bb  Same as AT+3V3T=(aa bb)
845 +
846 +
847 +
848 +
849 +1.
850 +11. Buttons
851 +
852 +|**Button**|**Feature**
853 +|**RST**|Reboot RS485-BL
854 +
855 +1.
856 +11. +3V3 Output
857 +
858 +RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor.
859 +
860 +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. 
861 +
862 +
863 +The +3V3 output time can be controlled by AT Command.
864 +
865 +**AT+3V3T=1000**
866 +
867 +Means set +3v3 valid time to have 1000ms. So, the real +3v3 output will actually have 1000ms + sampling time for other sensors.
868 +
869 +
870 +By default, the AT+3V3T=0. This is a special case, means the +3V3 output is always on at any time
871 +
872 +
873 +1.
874 +11. +5V Output
875 +
876 +RS485-BL has a Controllable +5V output, user can use this output to power external sensor.
877 +
878 +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. 
879 +
880 +
881 +The 5V output time can be controlled by AT Command.
882 +
883 +**AT+5VT=1000**
884 +
885 +Means set 5V valid time to have 1000ms. So, the real 5V output will actually have 1000ms + sampling time for other sensors.
886 +
887 +
888 +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.
889 +
890 +
891 +
892 +
893 +1.
894 +11. LEDs
895 +
896 +|**LEDs**|**Feature**
897 +|**LED1**|Blink when device transmit a packet.
898 +
899 +1.
900 +11. Switch Jumper
901 +
902 +|**Switch Jumper**|**Feature**
903 +|**SW1**|(((
904 +ISP position: Upgrade firmware via UART
905 +
906 +Flash position: Configure device, check running status.
907 +)))
908 +|**SW2**|(((
909 +5V position: set to compatible with 5v I/O.
910 +
911 +3.3v position: set to compatible with 3.3v I/O.,
912 +)))
913 +
914 ++3.3V: is always ON
915 +
916 ++5V: Only open before every sampling. The time is by default, it is AT+5VT=0.  Max open time. 5000 ms.
917 +
918 +1. Case Study
919 +
920 +User can check this URL for some case studies.
921 +
922 +[[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]]
923 +
924 +
925 +
926 +
927 +1. Use AT Command
928 +11. Access AT Command
929 +
930 +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.
931 +
932 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image027.png]]
933 +
934 +
935 +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:
936 +
937 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image028.png]]
938 +
939 +
940 +
941 +More detail AT Command manual can be found at [[AT Command Manual>>path:#AT_COMMAND]]
942 +
943 +
944 +
945 +1.
946 +11. Common AT Command Sequence
947 +111. Multi-channel ABP mode (Use with SX1301/LG308)
948 +
949 +If device has not joined network yet:
950 +
951 +AT+FDR
952 +
953 +AT+NJM=0
954 +
955 +ATZ
956 +
957 +
958 +If device already joined network:
959 +
960 +AT+NJM=0
961 +
962 +ATZ
963 +
964 +1.
965 +11.
966 +111. Single-channel ABP mode (Use with LG01/LG02)
967 +
968 +AT+FDR   Reset Parameters to Factory Default, Keys Reserve
969 +
970 +AT+NJM=0 Set to ABP mode
971 +
972 +AT+ADR=0 Set the Adaptive Data Rate Off
973 +
974 +AT+DR=5  Set Data Rate
975 +
976 +AT+TDC=60000  Set transmit interval to 60 seconds
977 +
978 +AT+CHS=868400000 Set transmit frequency to 868.4Mhz
979 +
980 +AT+RX2FQ=868400000 Set RX2Frequency to 868.4Mhz (according to the result from server)
981 +
982 +AT+RX2DR=5  Set RX2DR to match the downlink DR from server. see below
983 +
984 +AT+DADDR=26 01 1A F1 Set Device Address to 26 01 1A F1, this ID can be found in the LoRa Server portal.
985 +
986 +ATZ          Reset MCU
987 +
988 +**Note:**
989 +
990 +1. Make sure the device is set to ABP mode in the IoT Server.
991 +1. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
992 +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.
993 +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
994 +
995 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image029.png]]
996 +
997 +
998 +1. FAQ
999 +11. How to upgrade the image?
1000 +
1001 +The RS485-BL LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-BL to:
1002 +
1003 +* Support new features
1004 +* For bug fix
1005 +* Change LoRaWAN bands.
1006 +
1007 +Below shows the hardware connection for how to upload an image to RS485-BL:
1008 +
1009 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image030.png]]
1010 +
1011 +**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]].
1012 +
1013 +**Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
1014 +
1015 +**Step3: **Open flashloader; choose the correct COM port to update.
1016 +
1017 +
1018 +|(((
1019 +HOLD PRO then press the RST button, SYS will be ON, then click next
1020 +)))
1021 +
1022 +|(((
1023 +Board detected
1024 +)))
1025 +
1026 +|(((
1027 +
1028 +)))
1029 +
1030 +[[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]]
1031 +
1032 +
1033 +
1034 +[[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]]
1035 +
1036 +
1037 +[[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]]
1038 +
1039 +
1040 +1.
1041 +11. How to change the LoRa Frequency Bands/Region?
1042 +
1043 +User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download.
1044 +
1045 +
1046 +
1047 +1.
1048 +11. How many RS485-Slave can RS485-BL connects?
1049 +
1050 +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]].
1051 +
1052 +
1053 +
1054 +
1055 +1. Trouble Shooting     
1056 +11. Downlink doesn’t work, how to solve it?
1057 +
1058 +Please see this link for debug:
1059 +
1060 +[[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]] 
1061 +
1062 +
1063 +
1064 +1.
1065 +11. Why I can’t join TTN V3 in US915 /AU915 bands?
1066 +
1067 +It might about the channels mapping. Please see for detail.
1068 +
1069 +[[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]]
1070 +
1071 +
1072 +
1073 +1. Order Info
1074 +
1075 +**Part Number: RS485-BL-XXX**
1076 +
1077 +**XXX:**
1078 +
1079 +* **EU433**: frequency bands EU433
1080 +* **EU868**: frequency bands EU868
1081 +* **KR920**: frequency bands KR920
1082 +* **CN470**: frequency bands CN470
1083 +* **AS923**: frequency bands AS923
1084 +* **AU915**: frequency bands AU915
1085 +* **US915**: frequency bands US915
1086 +* **IN865**: frequency bands IN865
1087 +* **RU864**: frequency bands RU864
1088 +* **KZ865: **frequency bands KZ865
1089 +
1090 +1. Packing Info
1091 +
1092 +**Package Includes**:
1093 +
1094 +* RS485-BL x 1
1095 +* Stick Antenna for LoRa RF part x 1
1096 +* Program cable x 1
1097 +
1098 +**Dimension and weight**:
1099 +
1100 +* Device Size: 13.5 x 7 x 3 cm
1101 +* Device Weight: 105g
1102 +* Package Size / pcs : 14.5 x 8 x 5 cm
1103 +* Weight / pcs : 170g
1104 +
1105 +1. Support
1106 +
1107 +* 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.
1108 +* 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
1109 +
1110 +[[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]]
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