Last modified by Karry Zhuang on 2025/03/06 16:34
<
From version < 32.14 >
edited by Xiaoling
on 2022/06/02 15:26
To version < 39.1 >
edited by Xiaoling
on 2022/06/02 16:33
>
Change comment: Uploaded new attachment "1654158783574-851.png", version {1}

Summary

Details

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Content
... ... @@ -76,8 +76,6 @@
76 76  * Automatic RF Sense and CAD with ultra-fast AFC.
77 77  * Packet engine up to 256 bytes with CRC.
78 78  
79 -
80 -
81 81  == 1.3 Features ==
82 82  
83 83  * LoRaWAN Class A & Class C protocol (default Class C)
... ... @@ -89,8 +89,6 @@
89 89  * Support Modbus protocol
90 90  * Support Interrupt uplink (Since hardware version v1.2)
91 91  
92 -
93 -
94 94  == 1.4 Applications ==
95 95  
96 96  * Smart Buildings & Home Automation
... ... @@ -100,8 +100,6 @@
100 100  * Smart Cities
101 101  * Smart Factory
102 102  
103 -
104 -
105 105  == 1.5 Firmware Change log ==
106 106  
107 107  [[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
... ... @@ -222,6 +222,8 @@
222 222  
223 223  (((
224 224  (% style="color:red" %)Note: below description and commands are for firmware version >v1.1, if you have firmware version v1.0. Please check the [[user manual v1.0>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/&file=RS485-LN_UserManual_v1.0.1.pdf]] or upgrade the firmware to v1.1
219 +
220 +
225 225  )))
226 226  )))
227 227  
... ... @@ -229,19 +229,19 @@
229 229  
230 230  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:
231 231  
232 -(% border="1" style="background-color:#ffffcc; color:green; width:795px" %)
233 -|(((
228 +(% border="1" style="background-color:#ffffcc; color:green; width:782px" %)
229 +|(% style="width:128px" %)(((
234 234  **AT Commands**
235 -)))|(% style="width:285px" %)(((
231 +)))|(% style="width:305px" %)(((
236 236  **Description**
237 -)))|(% style="width:347px" %)(((
233 +)))|(% style="width:346px" %)(((
238 238  **Example**
239 239  )))
240 -|(((
236 +|(% style="width:128px" %)(((
241 241  AT+BAUDR
242 -)))|(% style="width:285px" %)(((
238 +)))|(% style="width:305px" %)(((
243 243  Set the baud rate (for RS485 connection). Default Value is: 9600.
244 -)))|(% style="width:347px" %)(((
240 +)))|(% style="width:346px" %)(((
245 245  (((
246 246  AT+BAUDR=9600
247 247  )))
... ... @@ -250,11 +250,11 @@
250 250  Options: (1200,2400,4800,14400,19200,115200)
251 251  )))
252 252  )))
253 -|(((
249 +|(% style="width:128px" %)(((
254 254  AT+PARITY
255 -)))|(% style="width:285px" %)(((
251 +)))|(% style="width:305px" %)(((
256 256  Set UART parity (for RS485 connection)
257 -)))|(% style="width:347px" %)(((
253 +)))|(% style="width:346px" %)(((
258 258  (((
259 259  AT+PARITY=0
260 260  )))
... ... @@ -263,9 +263,9 @@
263 263  Option: 0: no parity, 1: odd parity, 2: even parity
264 264  )))
265 265  )))
266 -|(((
262 +|(% style="width:128px" %)(((
267 267  AT+STOPBIT
268 -)))|(% style="width:285px" %)(((
264 +)))|(% style="width:305px" %)(((
269 269  (((
270 270  Set serial stopbit (for RS485 connection)
271 271  )))
... ... @@ -273,7 +273,7 @@
273 273  (((
274 274  
275 275  )))
276 -)))|(% style="width:347px" %)(((
272 +)))|(% style="width:346px" %)(((
277 277  (((
278 278  AT+STOPBIT=0 for 1bit
279 279  )))
... ... @@ -308,77 +308,34 @@
308 308  === 3.3.3 Configure read commands for each sampling ===
309 309  
310 310  (((
311 -RS485-BL is a battery powered device; it will sleep most of time. And wake up on each period and read RS485 / TTL sensor data and uplink.
312 -)))
307 +During each sampling, we need confirm what commands we need to send to the RS485 sensors to read data. After the RS485 sensors send back the value, it normally include some bytes and we only need a few from them for a shorten payload.
313 313  
314 -(((
315 -During each sampling, we need to confirm what commands we need to send to the sensors to read data. After the RS485/TTL sensors send back the value, it normally includes some bytes and we only need a few from them for a shorten payload.
316 -)))
317 -
318 -(((
319 319  To save the LoRaWAN network bandwidth, we might need to read data from different sensors and combine their valid value into a short payload.
320 -)))
321 321  
322 -(((
323 323  This section describes how to achieve above goals.
324 -)))
325 325  
326 -(((
327 -During each sampling, the RS485-BL can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
328 -)))
313 +During each sampling, the RS485-LN can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
329 329  
330 -(((
331 -**Command from RS485-BL to Sensor:**
332 -)))
333 333  
334 -(((
335 -RS485-BL can send out pre-set max 15 strings via **AT+COMMAD1**, **ATCOMMAND2**,…, to **AT+COMMANDF** . All commands are of same grammar.
336 -)))
316 +**Each RS485 commands include two parts:**
337 337  
338 -(((
339 -**Handle return from sensors to RS485-BL**:
340 -)))
318 +~1. What commands RS485-LN will send to the RS485 sensors. There are total 15 commands from **AT+COMMAD1**, **ATCOMMAND2**,…, to **AT+COMMANDF**. All commands are of same grammar.
341 341  
342 -(((
343 -After RS485-BL send out a string to sensor, RS485-BL will wait for the return from RS485 or TTL sensor. And user can specify how to handle the return, by **AT+DATACUT or AT+SEARCH commands**
344 -)))
320 +2. How to get wanted value the from RS485 sensors returns from by 1). There are total 15 AT Commands to handle the return, commands are **AT+DATACUT1**,**AT+DATACUT2**,…, **AT+DATACUTF** corresponding to the commands from 1). All commands are of same grammar.
345 345  
346 -* (((
347 -**AT+DATACUT**
348 -)))
322 +3. Some RS485 device might has longer delay on reply, so user can use AT+CMDDL to set the timeout for getting reply after the RS485 command is sent. For example **AT+CMDDL1=1000** to send the open time to 1000ms
349 349  
350 -(((
351 -When the return value from sensor have fix length and we know which position the valid value we should get, we can use AT+DATACUT command.
352 -)))
353 353  
354 -* (((
355 -**AT+SEARCH**
356 -)))
357 -
358 -(((
359 -When the return value from sensor is dynamic length and we are not sure which bytes the valid data is, instead, we know what value the valid value following. We can use AT+SEARCH to search the valid value in the return string.
360 -)))
361 -
362 -(((
363 -**Define wait timeout:**
364 -)))
365 -
366 -(((
367 -Some RS485 device might has longer delay on reply, so user can use AT+CMDDL to set the timeout for getting reply after the RS485 command is sent. For example, AT+CMDDL1=1000 to send the open time to 1000ms
368 -)))
369 -
370 -(((
371 371  After we got the valid value from each RS485 commands, we need to combine them together with the command **AT+DATAUP**.
372 -)))
373 373  
374 -**Examples:**
375 375  
376 376  Below are examples for the how above AT Commands works.
377 377  
378 -**AT+COMMANDx : **This command will be sent to RS485/TTL devices during each sampling, Max command length is 14 bytes. The grammar is:
379 379  
380 -(% border="1" class="table-bordered" %)
381 -|(((
331 +**AT+COMMANDx : **This command will be sent to RS485 devices during each sampling, Max command length is 14 bytes. The grammar is:
332 +
333 +(% border="1" style="background-color:#4bacc6; color:white; width:499px" %)
334 +|(% style="width:496px" %)(((
382 382  **AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
383 383  
384 384  **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
... ... @@ -386,49 +386,15 @@
386 386  **m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command**
387 387  )))
388 388  
389 -(((
390 390  For example, if we have a RS485 sensor. The command to get sensor value is: 01 03 0B B8 00 02 46 0A. Where 01 03 0B B8 00 02 is the Modbus command to read the register 0B B8 where stored the sensor value. The 46 0A is the CRC-16/MODBUS which calculate manually.
391 -)))
392 392  
393 -(((
394 -In the RS485-BL, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
395 -)))
344 +In the RS485-LN, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
396 396  
397 -(((
398 -**AT+SEARCHx**: This command defines how to handle the return from AT+COMMANDx.
399 -)))
400 400  
401 -(% border="1" class="table-bordered" %)
402 -|(((
403 -**AT+SEARCHx=aa,xx xx xx xx xx**
404 -
405 -* **aa: 1: prefix match mode; 2: prefix and suffix match mode**
406 -* **xx xx xx xx xx: match string. Max 5 bytes for prefix and 5 bytes for suffix**
407 -
408 -
409 -)))
410 -
411 -**Examples:**
412 -
413 -~1. For a return string from AT+COMMAND1: 16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
414 -
415 -If we set AT+SEARCH1=1,1E 56 34.      (max 5 bytes for prefix)
416 -
417 -The valid data will be all bytes after 1E 56 34 , so it is (% style="background-color:yellow" %)** 2e 30 58 5f 36 41 30 31 00 49**
418 -
419 -[[image:1653269403619-508.png]]
420 -
421 -2. For a return string from AT+COMMAND1:  16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
422 -
423 -If we set AT+SEARCH1=2, 1E 56 34+31 00 49
424 -
425 -Device will search the bytes between 1E 56 34 and 31 00 49. So it is (% style="background-color:yellow" %)** 2e 30 58 5f 36 41 30**
426 -
427 -[[image:1653269438444-278.png]]
428 -
429 429  **AT+DATACUTx : **This command defines how to handle the return from AT+COMMANDx, max return length is 45 bytes.
430 430  
431 -|(((
349 +(% border="1" style="background-color:#4bacc6; color:white; width:725px" %)
350 +|(% style="width:722px" %)(((
432 432  **AT+DATACUTx=a,b,c**
433 433  
434 434  * **a: length for the return of AT+COMMAND**
... ... @@ -436,48 +436,37 @@
436 436  * **c: define the position for valid value.  **
437 437  )))
438 438  
439 -Examples:
358 +**Examples:**
440 440  
441 441  * Grab bytes:
442 442  
443 -[[image:1653269551753-223.png||height="311" width="717"]]
362 +[[image:image-20220602153621-1.png]]
444 444  
364 +
445 445  * Grab a section.
446 446  
447 -[[image:1653269568276-930.png||height="325" width="718"]]
367 +[[image:image-20220602153621-2.png]]
448 448  
369 +
449 449  * Grab different sections.
450 450  
451 -[[image:1653269593172-426.png||height="303" width="725"]]
372 +[[image:image-20220602153621-3.png]]
452 452  
453 -(% style="color:red" %)**Note:**
374 +
375 +)))
454 454  
455 -AT+SEARCHx and AT+DATACUTx can be used together, if both commands are set, RS485-BL will first process AT+SEARCHx on the return string and get a temporary string, and then process AT+DATACUTx on this temporary string to get the final payload. In this case, AT+DATACUTx need to set to format AT+DATACUTx=0,xx,xx where the return bytes set to 0.
456 -
457 -Example:
458 -
459 -(% style="color:red" %)AT+COMMAND1=11 01 1E D0,0
460 -
461 -(% style="color:red" %)AT+SEARCH1=1,1E 56 34
462 -
463 -(% style="color:red" %)AT+DATACUT1=0,2,1~~5
464 -
465 -(% style="color:red" %)Return string from AT+COMMAND1: 16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
466 -
467 -(% style="color:red" %)String after SEARCH command: 2e 30 58 5f 36 41 30 31 00 49
468 -
469 -(% style="color:red" %)Valid payload after DataCUT command: 2e 30 58 5f 36
470 -
471 -[[image:1653269618463-608.png]]
472 -
473 473  === 3.3.4 Compose the uplink payload ===
474 474  
475 475  (((
476 476  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.**
381 +
382 +
477 477  )))
478 478  
479 479  (((
480 -(% style="color:#4f81bd" %)**Examples: AT+DATAUP=0**
386 +(% style="color:#037691" %)**Examples: AT+DATAUP=0**
387 +
388 +
481 481  )))
482 482  
483 483  (((
... ... @@ -498,8 +498,10 @@
498 498  
499 499  [[image:1653269759169-150.png||height="513" width="716"]]
500 500  
501 -(% style="color:#4f81bd" %)**Examples: AT+DATAUP=1**
502 502  
410 +(% style="color:#037691" %)**Examples: AT+DATAUP=1**
411 +
412 +
503 503  Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
504 504  
505 505  Final Payload is
... ... @@ -506,138 +506,98 @@
506 506  
507 507  (% style="color:#4f81bd" %)**Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
508 508  
509 -1. Battery Info (2 bytes): Battery voltage
510 -1. PAYVER (1 byte): Defined by AT+PAYVER
511 -1. PAYLOAD COUNT (1 byte): Total how many uplinks of this sampling.
512 -1. PAYLOAD# (1 byte): Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
513 -1. 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
419 +1. PAYVER: Defined by AT+PAYVER
420 +1. PAYLOAD COUNT: Total how many uplinks of this sampling.
421 +1. PAYLOAD#: Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
422 +1. DATA: Valid value: max 8 bytes for each uplink so each uplink <= 11 bytes. For the last uplink, DATA will might less than 8 bytes
514 514  
515 -[[image:1653269916228-732.png||height="433" width="711"]]
424 +[[image:image-20220602155039-4.png]]
516 516  
517 517  
518 -So totally there will be 3 uplinks for this sampling, each uplink includes 6 bytes DATA
427 +So totally there will be 3 uplinks for this sampling, each uplink include 8 bytes DATA
519 519  
520 -DATA1=RETURN1 Valid Value = (% style="background-color:green; color:white" %)20 20 0a 33 90 41
429 +DATA1=RETURN1 Valid Value + the first two of Valid value of RETURN10= **20 20 0a 33 90 41 02 aa**
521 521  
522 -DATA2=1^^st^^ ~~ 6^^th^^ byte of Valid value of RETURN10=(% style="background-color:green; color:white" %) 02 aa 05 81 0a 20
431 +DATA2=3^^rd^^ ~~ 10^^th^^ byte of Valid value of RETURN10= **05 81 0a 20 20 20 20 2d**
523 523  
524 -DATA3=7^^th^^ ~~ 11^^th^^ bytes of Valid value of RETURN10 = (% style="background-color:green; color:white" %)20 20 20 2d 30
433 +DATA3=the rest of Valid value of RETURN10= **30**
525 525  
526 -Below are the uplink payloads:
527 527  
528 -[[image:1653270130359-810.png]]
436 +(% style="color:red" %)Notice: In firmware v1.3, the Max bytes has been changed according to the max bytes in different Frequency Bands for lowest SF. As below:
529 529  
438 + ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink.
530 530  
531 -(% style="color:red" %)**Notice: the Max bytes is according to the max support bytes in different Frequency Bands for lowest SF. As below:**
440 + * For AU915/AS923 bands, if UplinkDwell time=0, max 11 bytes for each uplink.
532 532  
533 - ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink ( so 51 -5 = 46 max valid date)
442 + * For US915 band, max 11 bytes for each uplink.
534 534  
535 - * For AU915/AS923 bands, if UplinkDwell time=1, max 11 bytes for each uplink ( so 11 -5 = 6 max valid date).
444 + ~* For all other bands: max 51 bytes for each uplink.
536 536  
537 - * For US915 band, max 11 bytes for each uplink ( so 11 -5 = 6 max valid date).
538 538  
539 - ~* For all other bands: max 51 bytes for each uplink  ( so 51 -5 = 46 max valid date).
447 +Below are the uplink payloads:
540 540  
449 +[[image:1654157178836-407.png]]
450 +
451 +
541 541  === 3.3.5 Uplink on demand ===
542 542  
543 -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.
454 +Except uplink periodically, RS485-LN is able to uplink on demand. The server send downlink command to RS485-LN and RS485 will uplink data base on the command.
544 544  
545 545  Downlink control command:
546 546  
547 -[[0x08 command>>path:#downlink_08]]: Poll an uplink with current command set in RS485-BL.
458 +**0x08 command**: Poll an uplink with current command set in RS485-LN.
548 548  
549 -[[0xA8 command>>path:#downlink_A8]]: Send a command to RS485-BL and uplink the output from sensors.
460 +**0xA8 command**: Send a command to RS485-LN and uplink the output from sensors.
550 550  
551 551  
552 552  
553 -1.
554 -11.
555 -111. Uplink on Interrupt
464 +=== 3.3.6 Uplink on Interrupt ===
556 556  
557 -Put the interrupt sensor between 3.3v_out and GPIO ext.[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image022.png]]
466 +RS485-LN support external Interrupt uplink since hardware v1.2 release.
558 558  
559 -AT+INTMOD=0  Disable Interrupt
468 +[[image:1654157342174-798.png]]
560 560  
561 -AT+INTMOD=1  Interrupt trigger by rising or falling edge.
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.
562 562  
563 -AT+INTMOD=2  Interrupt trigger by falling edge. ( Default Value)
564 564  
565 -AT+INTMOD=3  Interrupt trigger by rising edge.
473 +== 3.4 Uplink Payload ==
566 566  
567 -
568 -1.
569 -11. Uplink Payload
570 -
571 -|**Size(bytes)**|**2**|**1**|**Length depends on the return from the commands**
572 -|Value|(((
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" %)(((
573 573  Battery(mV)
574 574  
575 575  &
576 576  
577 577  Interrupt _Flag
578 -)))|(((
483 +)))|(% style="width:116px" %)(((
579 579  PAYLOAD_VER
580 580  
581 581  
582 -)))|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 +)))|(% 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.
583 583  
584 584  Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
585 585  
586 586  
587 -function Decoder(bytes, port) {
492 +== 3.5 Configure RS485-BL via AT or Downlink ==
588 588  
589 -~/~/Payload Formats of RS485-BL Deceive
494 +User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
590 590  
591 -return {
496 +There are two kinds of Commands:
592 592  
593 - ~/~/Battery,units:V
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]]
594 594  
595 - BatV:((bytes[0]<<8 | bytes[1])&0x7fff)/1000,
500 +* (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-LN.  User can see these commands below:
596 596  
597 - ~/~/GPIO_EXTI 
598 598  
599 - EXTI_Trigger:(bytes[0] & 0x80)? "TRUE":"FALSE",
600 600  
601 - ~/~/payload of version
504 +=== 3.5.1 Common Commands ===
602 602  
603 - Pay_ver:bytes[2],
506 +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]]
604 604  
605 - };
606 606  
607 - }
509 +=== 3.5.2 Sensor related commands: ===
608 608  
609 -
610 -
611 -
612 -
613 -
614 -
615 -TTN V3 uplink screen shot.
616 -
617 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image023.png]]
618 -
619 -1.
620 -11. Configure RS485-BL via AT or Downlink
621 -
622 -User can configure RS485-BL via [[AT Commands >>path:#_​Using_the_AT]]or LoRaWAN Downlink Commands
623 -
624 -There are two kinds of Commands:
625 -
626 -* **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
627 -
628 -* **Sensor Related Commands**: These commands are special designed for RS485-BL.  User can see these commands below:
629 -
630 -1.
631 -11.
632 -111. Common Commands:
633 -
634 -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]]
635 -
636 -
637 -1.
638 -11.
639 -111. Sensor related commands:
640 -
641 641  ==== Choose Device Type (RS485 or TTL) ====
642 642  
643 643  RS485-BL can connect to either RS485 sensors or TTL sensor. User need to specify what type of sensor need to connect.
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