Last modified by Karry Zhuang on 2025/03/06 16:34
<
From version < 32.13 >
edited by Xiaoling
on 2022/06/02 15:26
To version < 40.1 >
edited by Xiaoling
on 2022/06/02 16:33
>
Change comment: Uploaded new attachment "image-20220602163333-5.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/]]
... ... @@ -212,6 +212,7 @@
212 212  
213 213  [[image:1652953568895-172.png||height="232" width="724"]]
214 214  
209 +
215 215  == 3.3 Configure Commands to read data ==
216 216  
217 217  (((
... ... @@ -221,6 +221,8 @@
221 221  
222 222  (((
223 223  (% 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 +
224 224  )))
225 225  )))
226 226  
... ... @@ -228,19 +228,19 @@
228 228  
229 229  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:
230 230  
231 -(% border="1" style="background-color:#ffffcc; color:green; width:795px" %)
232 -|(((
228 +(% border="1" style="background-color:#ffffcc; color:green; width:782px" %)
229 +|(% style="width:128px" %)(((
233 233  **AT Commands**
234 -)))|(% style="width:285px" %)(((
231 +)))|(% style="width:305px" %)(((
235 235  **Description**
236 -)))|(% style="width:347px" %)(((
233 +)))|(% style="width:346px" %)(((
237 237  **Example**
238 238  )))
239 -|(((
236 +|(% style="width:128px" %)(((
240 240  AT+BAUDR
241 -)))|(% style="width:285px" %)(((
238 +)))|(% style="width:305px" %)(((
242 242  Set the baud rate (for RS485 connection). Default Value is: 9600.
243 -)))|(% style="width:347px" %)(((
240 +)))|(% style="width:346px" %)(((
244 244  (((
245 245  AT+BAUDR=9600
246 246  )))
... ... @@ -249,11 +249,11 @@
249 249  Options: (1200,2400,4800,14400,19200,115200)
250 250  )))
251 251  )))
252 -|(((
249 +|(% style="width:128px" %)(((
253 253  AT+PARITY
254 -)))|(% style="width:285px" %)(((
251 +)))|(% style="width:305px" %)(((
255 255  Set UART parity (for RS485 connection)
256 -)))|(% style="width:347px" %)(((
253 +)))|(% style="width:346px" %)(((
257 257  (((
258 258  AT+PARITY=0
259 259  )))
... ... @@ -262,9 +262,9 @@
262 262  Option: 0: no parity, 1: odd parity, 2: even parity
263 263  )))
264 264  )))
265 -|(((
262 +|(% style="width:128px" %)(((
266 266  AT+STOPBIT
267 -)))|(% style="width:285px" %)(((
264 +)))|(% style="width:305px" %)(((
268 268  (((
269 269  Set serial stopbit (for RS485 connection)
270 270  )))
... ... @@ -272,7 +272,7 @@
272 272  (((
273 273  
274 274  )))
275 -)))|(% style="width:347px" %)(((
272 +)))|(% style="width:346px" %)(((
276 276  (((
277 277  AT+STOPBIT=0 for 1bit
278 278  )))
... ... @@ -307,77 +307,34 @@
307 307  === 3.3.3 Configure read commands for each sampling ===
308 308  
309 309  (((
310 -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.
311 -)))
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.
312 312  
313 -(((
314 -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.
315 -)))
316 -
317 -(((
318 318  To save the LoRaWAN network bandwidth, we might need to read data from different sensors and combine their valid value into a short payload.
319 -)))
320 320  
321 -(((
322 322  This section describes how to achieve above goals.
323 -)))
324 324  
325 -(((
326 -During each sampling, the RS485-BL can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
327 -)))
313 +During each sampling, the RS485-LN can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
328 328  
329 -(((
330 -**Command from RS485-BL to Sensor:**
331 -)))
332 332  
333 -(((
334 -RS485-BL can send out pre-set max 15 strings via **AT+COMMAD1**, **ATCOMMAND2**,…, to **AT+COMMANDF** . All commands are of same grammar.
335 -)))
316 +**Each RS485 commands include two parts:**
336 336  
337 -(((
338 -**Handle return from sensors to RS485-BL**:
339 -)))
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.
340 340  
341 -(((
342 -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**
343 -)))
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.
344 344  
345 -* (((
346 -**AT+DATACUT**
347 -)))
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
348 348  
349 -(((
350 -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.
351 -)))
352 352  
353 -* (((
354 -**AT+SEARCH**
355 -)))
356 -
357 -(((
358 -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.
359 -)))
360 -
361 -(((
362 -**Define wait timeout:**
363 -)))
364 -
365 -(((
366 -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
367 -)))
368 -
369 -(((
370 370  After we got the valid value from each RS485 commands, we need to combine them together with the command **AT+DATAUP**.
371 -)))
372 372  
373 -**Examples:**
374 374  
375 375  Below are examples for the how above AT Commands works.
376 376  
377 -**AT+COMMANDx : **This command will be sent to RS485/TTL devices during each sampling, Max command length is 14 bytes. The grammar is:
378 378  
379 -(% border="1" class="table-bordered" %)
380 -|(((
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" %)(((
381 381  **AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
382 382  
383 383  **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
... ... @@ -385,49 +385,15 @@
385 385  **m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command**
386 386  )))
387 387  
388 -(((
389 389  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.
390 -)))
391 391  
392 -(((
393 -In the RS485-BL, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
394 -)))
344 +In the RS485-LN, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
395 395  
396 -(((
397 -**AT+SEARCHx**: This command defines how to handle the return from AT+COMMANDx.
398 -)))
399 399  
400 -(% border="1" class="table-bordered" %)
401 -|(((
402 -**AT+SEARCHx=aa,xx xx xx xx xx**
403 -
404 -* **aa: 1: prefix match mode; 2: prefix and suffix match mode**
405 -* **xx xx xx xx xx: match string. Max 5 bytes for prefix and 5 bytes for suffix**
406 -
407 -
408 -)))
409 -
410 -**Examples:**
411 -
412 -~1. For a return string from AT+COMMAND1: 16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
413 -
414 -If we set AT+SEARCH1=1,1E 56 34.      (max 5 bytes for prefix)
415 -
416 -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**
417 -
418 -[[image:1653269403619-508.png]]
419 -
420 -2. For a return string from AT+COMMAND1:  16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
421 -
422 -If we set AT+SEARCH1=2, 1E 56 34+31 00 49
423 -
424 -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**
425 -
426 -[[image:1653269438444-278.png]]
427 -
428 428  **AT+DATACUTx : **This command defines how to handle the return from AT+COMMANDx, max return length is 45 bytes.
429 429  
430 -|(((
349 +(% border="1" style="background-color:#4bacc6; color:white; width:725px" %)
350 +|(% style="width:722px" %)(((
431 431  **AT+DATACUTx=a,b,c**
432 432  
433 433  * **a: length for the return of AT+COMMAND**
... ... @@ -435,48 +435,37 @@
435 435  * **c: define the position for valid value.  **
436 436  )))
437 437  
438 -Examples:
358 +**Examples:**
439 439  
440 440  * Grab bytes:
441 441  
442 -[[image:1653269551753-223.png||height="311" width="717"]]
362 +[[image:image-20220602153621-1.png]]
443 443  
364 +
444 444  * Grab a section.
445 445  
446 -[[image:1653269568276-930.png||height="325" width="718"]]
367 +[[image:image-20220602153621-2.png]]
447 447  
369 +
448 448  * Grab different sections.
449 449  
450 -[[image:1653269593172-426.png||height="303" width="725"]]
372 +[[image:image-20220602153621-3.png]]
451 451  
452 -(% style="color:red" %)**Note:**
374 +
375 +)))
453 453  
454 -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.
455 -
456 -Example:
457 -
458 -(% style="color:red" %)AT+COMMAND1=11 01 1E D0,0
459 -
460 -(% style="color:red" %)AT+SEARCH1=1,1E 56 34
461 -
462 -(% style="color:red" %)AT+DATACUT1=0,2,1~~5
463 -
464 -(% style="color:red" %)Return string from AT+COMMAND1: 16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
465 -
466 -(% style="color:red" %)String after SEARCH command: 2e 30 58 5f 36 41 30 31 00 49
467 -
468 -(% style="color:red" %)Valid payload after DataCUT command: 2e 30 58 5f 36
469 -
470 -[[image:1653269618463-608.png]]
471 -
472 472  === 3.3.4 Compose the uplink payload ===
473 473  
474 474  (((
475 475  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 +
476 476  )))
477 477  
478 478  (((
479 -(% style="color:#4f81bd" %)**Examples: AT+DATAUP=0**
386 +(% style="color:#037691" %)**Examples: AT+DATAUP=0**
387 +
388 +
480 480  )))
481 481  
482 482  (((
... ... @@ -497,8 +497,10 @@
497 497  
498 498  [[image:1653269759169-150.png||height="513" width="716"]]
499 499  
500 -(% style="color:#4f81bd" %)**Examples: AT+DATAUP=1**
501 501  
410 +(% style="color:#037691" %)**Examples: AT+DATAUP=1**
411 +
412 +
502 502  Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
503 503  
504 504  Final Payload is
... ... @@ -505,138 +505,98 @@
505 505  
506 506  (% style="color:#4f81bd" %)**Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
507 507  
508 -1. Battery Info (2 bytes): Battery voltage
509 -1. PAYVER (1 byte): Defined by AT+PAYVER
510 -1. PAYLOAD COUNT (1 byte): Total how many uplinks of this sampling.
511 -1. PAYLOAD# (1 byte): Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
512 -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
513 513  
514 -[[image:1653269916228-732.png||height="433" width="711"]]
424 +[[image:image-20220602155039-4.png]]
515 515  
516 516  
517 -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
518 518  
519 -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**
520 520  
521 -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**
522 522  
523 -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**
524 524  
525 -Below are the uplink payloads:
526 526  
527 -[[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:
528 528  
438 + ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink.
529 529  
530 -(% 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.
531 531  
532 - ~* 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.
533 533  
534 - * 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.
535 535  
536 - * For US915 band, max 11 bytes for each uplink ( so 11 -5 = 6 max valid date).
537 537  
538 - ~* For all other bands: max 51 bytes for each uplink  ( so 51 -5 = 46 max valid date).
447 +Below are the uplink payloads:
539 539  
449 +[[image:1654157178836-407.png]]
450 +
451 +
540 540  === 3.3.5 Uplink on demand ===
541 541  
542 -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.
543 543  
544 544  Downlink control command:
545 545  
546 -[[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.
547 547  
548 -[[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.
549 549  
550 550  
551 551  
552 -1.
553 -11.
554 -111. Uplink on Interrupt
464 +=== 3.3.6 Uplink on Interrupt ===
555 555  
556 -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.
557 557  
558 -AT+INTMOD=0  Disable Interrupt
468 +[[image:1654157342174-798.png]]
559 559  
560 -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.
561 561  
562 -AT+INTMOD=2  Interrupt trigger by falling edge. ( Default Value)
563 563  
564 -AT+INTMOD=3  Interrupt trigger by rising edge.
473 +== 3.4 Uplink Payload ==
565 565  
566 -
567 -1.
568 -11. Uplink Payload
569 -
570 -|**Size(bytes)**|**2**|**1**|**Length depends on the return from the commands**
571 -|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" %)(((
572 572  Battery(mV)
573 573  
574 574  &
575 575  
576 576  Interrupt _Flag
577 -)))|(((
483 +)))|(% style="width:116px" %)(((
578 578  PAYLOAD_VER
579 579  
580 580  
581 -)))|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.
582 582  
583 583  Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
584 584  
585 585  
586 -function Decoder(bytes, port) {
492 +== 3.5 Configure RS485-BL via AT or Downlink ==
587 587  
588 -~/~/Payload Formats of RS485-BL Deceive
494 +User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
589 589  
590 -return {
496 +There are two kinds of Commands:
591 591  
592 - ~/~/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]]
593 593  
594 - 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:
595 595  
596 - ~/~/GPIO_EXTI 
597 597  
598 - EXTI_Trigger:(bytes[0] & 0x80)? "TRUE":"FALSE",
599 599  
600 - ~/~/payload of version
504 +=== 3.5.1 Common Commands ===
601 601  
602 - 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]]
603 603  
604 - };
605 605  
606 - }
509 +=== 3.5.2 Sensor related commands: ===
607 607  
608 -
609 -
610 -
611 -
612 -
613 -
614 -TTN V3 uplink screen shot.
615 -
616 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image023.png]]
617 -
618 -1.
619 -11. Configure RS485-BL via AT or Downlink
620 -
621 -User can configure RS485-BL via [[AT Commands >>path:#_​Using_the_AT]]or LoRaWAN Downlink Commands
622 -
623 -There are two kinds of Commands:
624 -
625 -* **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
626 -
627 -* **Sensor Related Commands**: These commands are special designed for RS485-BL.  User can see these commands below:
628 -
629 -1.
630 -11.
631 -111. Common Commands:
632 -
633 -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]]
634 -
635 -
636 -1.
637 -11.
638 -111. Sensor related commands:
639 -
640 640  ==== Choose Device Type (RS485 or TTL) ====
641 641  
642 642  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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