Last modified by Bei Jinggeng on 2025/01/16 11:36
<
From version < 57.44 >
edited by Xiaoling
on 2022/06/06 10:12
To version < 58.20 >
edited by Xiaoling
on 2022/06/06 11:24
>
Change comment: There is no comment for this version

Summary

Details

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Content
... ... @@ -104,7 +104,6 @@
104 104  * Support Interrupt uplink (Since hardware version v1.2)
105 105  
106 106  
107 -
108 108  == 1.4 Applications ==
109 109  
110 110  * Smart Buildings & Home Automation
... ... @@ -115,7 +115,6 @@
115 115  * Smart Factory
116 116  
117 117  
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/]]
... ... @@ -125,9 +125,13 @@
125 125  
126 126  (((
127 127  (((
126 +(((
128 128  v1.2: Add External Interrupt Pin.
128 +)))
129 129  
130 +(((
130 130  v1.0: Release
132 +)))
131 131  
132 132  
133 133  )))
... ... @@ -155,7 +155,9 @@
155 155  == 3.1 How it works? ==
156 156  
157 157  (((
160 +(((
158 158  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 +)))
159 159  
160 160  
161 161  )))
... ... @@ -245,19 +245,19 @@
245 245  
246 246  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:
247 247  
248 -(% border="1" style="background-color:#ffffcc; color:green; width:782px" %)
249 -|(% style="width:128px" %)(((
252 +(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
253 +|=(% style="width: 110px;" %)(((
250 250  **AT Commands**
251 -)))|(% style="width:305px" %)(((
255 +)))|=(% style="width: 190px;" %)(((
252 252  **Description**
253 -)))|(% style="width:346px" %)(((
257 +)))|=(% style="width: 190px;" %)(((
254 254  **Example**
255 255  )))
256 -|(% style="width:128px" %)(((
260 +|(% style="width:110px" %)(((
257 257  AT+BAUDR
258 -)))|(% style="width:305px" %)(((
262 +)))|(% style="width:190px" %)(((
259 259  Set the baud rate (for RS485 connection). Default Value is: 9600.
260 -)))|(% style="width:346px" %)(((
264 +)))|(% style="width:190px" %)(((
261 261  (((
262 262  AT+BAUDR=9600
263 263  )))
... ... @@ -266,11 +266,11 @@
266 266  Options: (1200,2400,4800,14400,19200,115200)
267 267  )))
268 268  )))
269 -|(% style="width:128px" %)(((
273 +|(% style="width:110px" %)(((
270 270  AT+PARITY
271 -)))|(% style="width:305px" %)(((
275 +)))|(% style="width:190px" %)(((
272 272  Set UART parity (for RS485 connection)
273 -)))|(% style="width:346px" %)(((
277 +)))|(% style="width:190px" %)(((
274 274  (((
275 275  AT+PARITY=0
276 276  )))
... ... @@ -279,9 +279,9 @@
279 279  Option: 0: no parity, 1: odd parity, 2: even parity
280 280  )))
281 281  )))
282 -|(% style="width:128px" %)(((
286 +|(% style="width:110px" %)(((
283 283  AT+STOPBIT
284 -)))|(% style="width:305px" %)(((
288 +)))|(% style="width:190px" %)(((
285 285  (((
286 286  Set serial stopbit (for RS485 connection)
287 287  )))
... ... @@ -289,7 +289,7 @@
289 289  (((
290 290  
291 291  )))
292 -)))|(% style="width:346px" %)(((
296 +)))|(% style="width:190px" %)(((
293 293  (((
294 294  AT+STOPBIT=0 for 1bit
295 295  )))
... ... @@ -303,6 +303,8 @@
303 303  )))
304 304  )))
305 305  
310 +
311 +
306 306  === 3.3.2 Configure sensors ===
307 307  
308 308  (((
... ... @@ -311,16 +311,18 @@
311 311  )))
312 312  )))
313 313  
314 -(% border="1" style="background-color:#ffffcc; color:green; width:806px" %)
315 -|**AT Commands**|(% style="width:418px" %)**Description**|(% style="width:256px" %)**Example**
316 -|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" %)(((
317 317  This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
318 318  
319 319  AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
320 320  
321 321  mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
322 -)))|(% 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
323 323  
330 +
331 +
324 324  === 3.3.3 Configure read commands for each sampling ===
325 325  
326 326  (((
... ... @@ -366,8 +366,8 @@
366 366  
367 367  **AT+DATACUTx : **This command defines how to handle the return from AT+COMMANDx, max return length is 45 bytes.
368 368  
369 -(% border="1" style="background-color:#4bacc6; color:white; width:725px" %)
370 -|(% style="width:722px" %)(((
377 +(% border="1" style="background-color:#4bacc6; color:white; width:510px" %)
378 +|(% style="width:510px" %)(((
371 371  **AT+DATACUTx=a,b,c**
372 372  
373 373  * **a: length for the return of AT+COMMAND**
... ... @@ -493,33 +493,35 @@
493 493  
494 494  == 3.4 Uplink Payload ==
495 495  
496 -(% border="1" style="background-color:#4bacc6; color:white; width:734px" %)
497 -|**Size(bytes)**|(% style="width:120px" %)**2**|(% style="width:116px" %)**1**|(% style="width:386px" %)**Length depends on the return from the commands**
498 -|Value|(% style="width:120px" %)(((
499 -Battery(mV)
500 500  
501 -&
505 +[[image:image-20220606110929-1.png]]
502 502  
503 -Interrupt _Flag
504 -)))|(% style="width:116px" %)(((
505 -PAYLOAD_VER
506 -
507 -
508 -)))|(% 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.
509 -
510 510  Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
511 511  
512 512  
513 513  == 3.5 Configure RS485-BL via AT or Downlink ==
514 514  
512 +(((
515 515  User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
514 +)))
516 516  
516 +(((
517 517  There are two kinds of Commands:
518 +)))
518 518  
519 -* (% 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 +)))
520 520  
521 -* (% 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 +)))
522 522  
528 +(((
529 +
530 +)))
531 +
532 +
523 523  === 3.5.1 Common Commands ===
524 524  
525 525  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]]
... ... @@ -538,142 +538,282 @@
538 538  
539 539  
540 540  
551 +
541 541  ==== **RS485 Debug Command** ====
542 542  
554 +(((
543 543  This command is used to configure the RS485 devices; they won’t be used during sampling.
556 +)))
544 544  
545 -* **AT Command**
558 +* (((
559 +**AT Command**
560 +)))
546 546  
547 547  (% class="box infomessage" %)
548 548  (((
564 +(((
549 549  **AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m**
550 550  )))
567 +)))
551 551  
569 +(((
552 552  m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
571 +)))
553 553  
554 -* **Downlink Payload**
573 +* (((
574 +**Downlink Payload**
575 +)))
555 555  
577 +(((
556 556  Format: A8 MM NN XX XX XX XX YY
579 +)))
557 557  
581 +(((
558 558  Where:
583 +)))
559 559  
560 -* MM: 1: add CRC-16/MODBUS ; 0: no CRC
561 -* NN: The length of RS485 command
562 -* XX XX XX XX: RS485 command total NN bytes
563 -* YY: How many bytes will be uplink from the return of this RS485 command,
564 -** if YY=0, RS485-LN will execute the downlink command without uplink;
565 -** if YY>0, RS485-LN will uplink total YY bytes from the output of this RS485 command; Fport=200
566 -** 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 +)))
567 567  
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 +(((
568 568  **Example 1** ~-~-> Configure without ask for uplink (YY=0)
612 +)))
569 569  
614 +(((
570 570  To connect a Modbus Alarm with below commands.
616 +)))
571 571  
572 -* 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 +)))
573 573  
574 -* 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 +)))
575 575  
626 +(((
576 576  So if user want to use downlink command to control to RS485 Alarm, he can use:
628 +)))
577 577  
630 +(((
578 578  (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 01 00**(%%): to activate the RS485 Alarm
632 +)))
579 579  
634 +(((
580 580  (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
636 +)))
581 581  
638 +(((
582 582  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 +)))
583 583  
642 +(((
643 +
644 +)))
584 584  
646 +(((
585 585  **Example 2** ~-~-> Configure with requesting uplink and original downlink command (**YY=FF**)
648 +)))
586 586  
650 +(((
587 587  User in IoT server send a downlink command: (% style="color:#4f81bd" %)**A8 01 06 0A 08 00 04 00 01 YY**
652 +)))
588 588  
654 +(((
655 +
656 +)))
589 589  
658 +(((
590 590  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 +)))
591 591  
662 +(((
592 592   **A8** (% style="color:#4f81bd" %)**0A 08 00 04 00  **(% style="color:red" %)**01 06** ** **(% style="color:green" %)**0A 08 00 04 00 00**
664 +)))
593 593  
666 +(((
594 594   [[image:1654159460680-153.png]]
668 +)))
595 595  
596 596  
597 597  
672 +
598 598  ==== **Set Payload version** ====
599 599  
675 +(((
600 600  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 +)))
601 601  
602 -* **AT Command:**
679 +* (((
680 +**AT Command:**
681 +)))
603 603  
604 604  (% class="box infomessage" %)
605 605  (((
685 +(((
606 606  **AT+PAYVER: Set PAYVER field = 1**
607 607  )))
688 +)))
608 608  
609 -* **Downlink Payload:**
690 +* (((
691 +**Downlink Payload:**
692 +)))
610 610  
694 +(((
611 611  **0xAE 01**  ~-~-> Set PAYVER field =  0x01
696 +)))
612 612  
698 +(((
613 613  **0xAE 0F**   ~-~-> Set PAYVER field =  0x0F
700 +)))
614 614  
615 615  
616 616  
704 +
617 617  ==== **Set RS485 Sampling Commands** ====
618 618  
707 +(((
619 619  AT+COMMANDx or AT+DATACUTx
709 +)))
620 620  
711 +(((
621 621  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 +)))
622 622  
715 +(((
716 +
717 +)))
623 623  
624 -* **AT Command:**
719 +* (((
720 +**AT Command:**
721 +)))
625 625  
626 626  (% class="box infomessage" %)
627 627  (((
725 +(((
628 628  **AT+COMMANDx: Configure RS485 read command to sensor.**
629 629  )))
728 +)))
630 630  
631 631  (% class="box infomessage" %)
632 632  (((
732 +(((
633 633  **AT+DATACUTx: Configure how to handle return from RS485 devices.**
634 634  )))
735 +)))
635 635  
737 +(((
738 +
739 +)))
636 636  
637 -* **Downlink Payload:**
741 +* (((
742 +**Downlink Payload:**
743 +)))
638 638  
745 +(((
639 639  **0xAF** downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
747 +)))
640 640  
749 +(((
641 641  (% style="color:red" %)**Note**(%%): if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
751 +)))
642 642  
753 +(((
643 643  Format: AF MM NN LL XX XX XX XX YY
755 +)))
644 644  
757 +(((
645 645  Where:
759 +)))
646 646  
647 -* MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
648 -* NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
649 -* LL:  The length of AT+COMMAND or AT+DATACUT command
650 -* XX XX XX XX: AT+COMMAND or AT+DATACUT command
651 -* 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 +)))
652 652  
777 +(((
653 653  **Example:**
779 +)))
654 654  
781 +(((
655 655  (% 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 +)))
656 656  
785 +(((
657 657  (% 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 +)))
658 658  
789 +(((
659 659  (% 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 +)))
660 660  
661 661  
662 662  
795 +
663 663  ==== **Fast command to handle MODBUS device** ====
664 664  
798 +(((
665 665  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 +)))
666 666  
802 +(((
667 667  This command is valid since v1.3 firmware version
804 +)))
668 668  
806 +(((
669 669  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 +)))
670 670  
810 +(((
811 +
812 +)))
671 671  
814 +(((
672 672  **Example:**
816 +)))
673 673  
674 -* AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2 are not configure (0,0,0). So RS485-LN.
675 -* 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.
676 -* 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 +)))
677 677  
678 678  [[image:image-20220602165351-6.png]]
679 679  
... ... @@ -681,149 +681,269 @@
681 681  
682 682  
683 683  
834 +
684 684  ==== **RS485 command timeout** ====
685 685  
837 +(((
686 686  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 +)))
687 687  
841 +(((
688 688  Default value: 0, range:  0 ~~ 65 seconds
843 +)))
689 689  
690 -* **AT Command:**
845 +* (((
846 +**AT Command:**
847 +)))
691 691  
692 692  (% class="box infomessage" %)
693 693  (((
851 +(((
694 694  **AT+CMDDLaa=hex(bb cc)*1000**
695 695  )))
854 +)))
696 696  
856 +(((
697 697  **Example:**
858 +)))
698 698  
860 +(((
699 699  **AT+CMDDL1=1000** to send the open time to 1000ms
862 +)))
700 700  
864 +(((
865 +
866 +)))
701 701  
702 -* **Downlink Payload:**
868 +* (((
869 +**Downlink Payload:**
870 +)))
703 703  
872 +(((
704 704  **0x AA aa bb cc**
874 +)))
705 705  
876 +(((
706 706  Same as: AT+CMDDLaa=hex(bb cc)*1000
878 +)))
707 707  
880 +(((
708 708   **Example:**
882 +)))
709 709  
884 +(((
710 710   0xAA 01 00 01  ~-~-> Same as **AT+CMDDL1=1000 ms**
886 +)))
711 711  
712 712  
713 713  
890 +
714 714  ==== **Uplink payload mode** ====
715 715  
893 +(((
716 716  Define to use one uplink or multiple uplinks for the sampling.
895 +)))
717 717  
897 +(((
718 718  The use of this command please see: [[Compose Uplink payload>>||anchor="H3.3.4Composetheuplinkpayload"]]
899 +)))
719 719  
720 -* **AT Command:**
901 +* (((
902 +**AT Command:**
903 +)))
721 721  
722 722  (% class="box infomessage" %)
723 723  (((
907 +(((
724 724  **AT+DATAUP=0**
725 725  )))
910 +)))
726 726  
727 727  (% class="box infomessage" %)
728 728  (((
914 +(((
729 729  **AT+DATAUP=1**
730 730  )))
917 +)))
731 731  
919 +(((
920 +
921 +)))
732 732  
733 -* **Downlink Payload:**
923 +* (((
924 +**Downlink Payload:**
925 +)))
734 734  
927 +(((
735 735  **0xAD 00**  **~-~->** Same as AT+DATAUP=0
929 +)))
736 736  
931 +(((
737 737  **0xAD 01**  **~-~->** Same as AT+DATAUP=1
933 +)))
738 738  
739 739  
740 740  
937 +
741 741  ==== **Manually trigger an Uplink** ====
742 742  
940 +(((
743 743  Ask device to send an uplink immediately.
942 +)))
744 744  
745 -* **AT Command:**
944 +* (((
945 +**AT Command:**
946 +)))
746 746  
948 +(((
747 747  No AT Command for this, user can press the [[ACT button>>||anchor="H3.7Buttons"]] for 1 second for the same.
950 +)))
748 748  
952 +(((
953 +
954 +)))
749 749  
750 -* **Downlink Payload:**
956 +* (((
957 +**Downlink Payload:**
958 +)))
751 751  
960 +(((
752 752  **0x08 FF**, RS485-LN will immediately send an uplink.
962 +)))
753 753  
754 754  
755 755  
966 +
756 756  ==== **Clear RS485 Command** ====
757 757  
969 +(((
758 758  The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
971 +)))
759 759  
760 -* **AT Command:**
973 +* (((
974 +**AT Command:**
975 +)))
761 761  
977 +(((
762 762  **AT+CMDEAR=mm,nn**   mm: start position of erase ,nn: stop position of erase
979 +)))
763 763  
981 +(((
764 764  Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
983 +)))
765 765  
985 +(((
766 766  Example screen shot after clear all RS485 commands. 
987 +)))
767 767  
989 +(((
990 +
991 +)))
768 768  
993 +(((
769 769  The uplink screen shot is:
995 +)))
770 770  
771 771  [[image:1654160691922-496.png]]
772 772  
773 773  
774 -* **Downlink Payload:**
1000 +* (((
1001 +**Downlink Payload:**
1002 +)))
775 775  
1004 +(((
776 776  **0x09 aa bb** same as AT+CMDEAR=aa,bb
1006 +)))
777 777  
778 778  
779 779  
1010 +
780 780  ==== **Set Serial Communication Parameters** ====
781 781  
1013 +(((
782 782  Set the Rs485 serial communication parameters:
1015 +)))
783 783  
784 -* **AT Command:**
1017 +* (((
1018 +**AT Command:**
1019 +)))
785 785  
1021 +(((
786 786  Set Baud Rate:
1023 +)))
787 787  
788 788  (% class="box infomessage" %)
789 789  (((
1027 +(((
790 790  **AT+BAUDR=9600**    ~/~/ Options: (1200,2400,4800,14400,19200,115200)
791 791  )))
1030 +)))
792 792  
1032 +(((
793 793  Set UART Parity
1034 +)))
794 794  
795 795  (% class="box infomessage" %)
796 796  (((
1038 +(((
797 797  **AT+PARITY=0**    ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity
798 798  )))
1041 +)))
799 799  
1043 +(((
800 800  Set STOPBIT
1045 +)))
801 801  
802 802  (% class="box infomessage" %)
803 803  (((
1049 +(((
804 804  **AT+STOPBIT=0**    ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
805 805  )))
1052 +)))
806 806  
1054 +(((
1055 +
1056 +)))
807 807  
808 -* **Downlink Payload:**
1058 +* (((
1059 +**Downlink Payload:**
1060 +)))
809 809  
1062 +(((
810 810  **A7 01 aa bb**: Same  AT+BAUDR=hex(aa bb)*100
1064 +)))
811 811  
1066 +(((
812 812  **Example:**
1068 +)))
813 813  
814 -* A7 01 00 60   same as AT+BAUDR=9600
815 -* 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 +)))
816 816  
1077 +(((
817 817  A7 02 aa: Same as  AT+PARITY=aa  (aa value: 00 , 01 or 02)
1079 +)))
818 818  
1081 +(((
819 819  A7 03 aa: Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
1083 +)))
820 820  
821 821  
1086 +
1087 +
822 822  == 3.6 Listening mode for RS485 network ==
823 823  
1090 +(((
824 824  This feature support since firmware v1.4
1092 +)))
825 825  
1094 +(((
826 826  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 +)))
827 827  
828 828  [[image:image-20220602171200-8.png||height="567" width="1007"]]
829 829  
... ... @@ -869,7 +869,6 @@
869 869  |**RST**|(% style="width:1420px" %)Reboot RS485
870 870  |**PRO**|(% style="width:1420px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
871 871  
872 -
873 873  == 3.8 LEDs ==
874 874  
875 875  (% border="1" style="background-color:#f7faff; width:500px" %)
... ... @@ -877,7 +877,6 @@
877 877  |**PWR**|Always on if there is power
878 878  |**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.
879 879  
880 -
881 881  = 4. Case Study =
882 882  
883 883  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]]
... ... @@ -1055,7 +1055,6 @@
1055 1055  * (% style="color:blue" %)**KZ865**(%%): frequency bands KZ865
1056 1056  
1057 1057  
1058 -
1059 1059  = 9.Packing Info =
1060 1060  
1061 1061  
... ... @@ -1073,7 +1073,6 @@
1073 1073  * Weight / pcs : 170g
1074 1074  
1075 1075  
1076 -
1077 1077  = 10. FCC Caution for RS485LN-US915 =
1078 1078  
1079 1079  (((
image-20220606110929-1.png
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