Last modified by Karry Zhuang on 2025/03/06 16:34
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From version < 27.1 >
edited by Xiaoling
on 2022/05/23 09:33
To version < 30.2 >
edited by Xiaoling
on 2022/05/23 09:40
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... ... @@ -365,11 +365,17 @@
365 365  **m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command**
366 366  )))
367 367  
368 +(((
368 368  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.
370 +)))
369 369  
372 +(((
370 370  In the RS485-BL, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
374 +)))
371 371  
376 +(((
372 372  **AT+SEARCHx**: This command defines how to handle the return from AT+COMMANDx.
378 +)))
373 373  
374 374  (% border="1" class="table-bordered" %)
375 375  |(((
... ... @@ -381,26 +381,24 @@
381 381  
382 382  )))
383 383  
384 -Examples:
390 +**Examples:**
385 385  
386 -1. For a return string from AT+COMMAND1: 16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
392 +~1. For a return string from AT+COMMAND1: 16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
387 387  
388 388  If we set AT+SEARCH1=1,1E 56 34.      (max 5 bytes for prefix)
389 389  
390 -The valid data will be all bytes after 1E 56 34 , so it is 2e 30 58 5f 36 41 30 31 00 49
396 +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**
391 391  
392 -[[image:1652954654347-831.png]]
398 +[[image:1653269403619-508.png]]
393 393  
400 +2. For a return string from AT+COMMAND1:  16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
394 394  
395 -1. For a return string from AT+COMMAND1:  16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
396 -
397 397  If we set AT+SEARCH1=2, 1E 56 34+31 00 49
398 398  
399 -Device will search the bytes between 1E 56 34 and 31 00 49. So it is 2e 30 58 5f 36 41 30
404 +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**
400 400  
401 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image014.png]]
406 +[[image:1653269438444-278.png]]
402 402  
403 -
404 404  **AT+DATACUTx : **This command defines how to handle the return from AT+COMMANDx, max return length is 45 bytes.
405 405  
406 406  |(((
... ... @@ -415,76 +415,79 @@
415 415  
416 416  * Grab bytes:
417 417  
418 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image015.png]]
422 +[[image:1653269551753-223.png||height="311" width="717"]]
419 419  
420 420  * Grab a section.
421 421  
422 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image016.png]]
426 +[[image:1653269568276-930.png||height="325" width="718"]]
423 423  
424 424  * Grab different sections.
425 425  
426 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image017.png]]
430 +[[image:1653269593172-426.png||height="303" width="725"]]
427 427  
432 +(% style="color:red" %)**Note:**
428 428  
429 -Note:
430 -
431 431  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.
432 432  
433 433  Example:
434 434  
435 -AT+COMMAND1=11 01 1E D0,0
438 +(% style="color:red" %)AT+COMMAND1=11 01 1E D0,0
436 436  
437 -AT+SEARCH1=1,1E 56 34
440 +(% style="color:red" %)AT+SEARCH1=1,1E 56 34
438 438  
439 -AT+DATACUT1=0,2,1~~5
442 +(% style="color:red" %)AT+DATACUT1=0,2,1~~5
440 440  
441 -Return string from AT+COMMAND1: 16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
444 +(% style="color:red" %)Return string from AT+COMMAND1: 16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
442 442  
443 -String after SEARCH command: 2e 30 58 5f 36 41 30 31 00 49
446 +(% style="color:red" %)String after SEARCH command: 2e 30 58 5f 36 41 30 31 00 49
444 444  
445 -Valid payload after DataCUT command: 2e 30 58 5f 36
448 +(% style="color:red" %)Valid payload after DataCUT command: 2e 30 58 5f 36
446 446  
447 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image018.png]]
450 +[[image:1653269618463-608.png]]
448 448  
452 +=== 3.3.4 Compose the uplink payload ===
449 449  
450 -
451 -
452 -1.
453 -11.
454 -111. Compose the uplink payload
455 -
454 +(((
456 456  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.**
456 +)))
457 457  
458 +(((
459 +(% style="color:#4f81bd" %)**Examples: AT+DATAUP=0**
460 +)))
458 458  
459 -**Examples: AT+DATAUP=0**
462 +(((
463 +Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**A SIGNLE UPLINK**.
464 +)))
460 460  
461 -Compose the uplink payload with value returns in sequence and send with **A SIGNLE UPLINK**.
462 -
466 +(((
463 463  Final Payload is
468 +)))
464 464  
465 -Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx
470 +(((
471 +(% style="color:#4f81bd" %)**Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx**
472 +)))
466 466  
474 +(((
467 467  Where PAYVER is defined by AT+PAYVER, below is an example screen shot.
476 +)))
468 468  
469 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image019.png]]
478 +[[image:1653269759169-150.png||height="513" width="716"]]
470 470  
480 +(% style="color:#4f81bd" %)**Examples: AT+DATAUP=1**
471 471  
482 +Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
472 472  
473 -**Examples: AT+DATAUP=1**
474 -
475 -Compose the uplink payload with value returns in sequence and send with **Multiply UPLINKs**.
476 -
477 477  Final Payload is
478 478  
479 -Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA
486 +(% style="color:#4f81bd" %)**Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
480 480  
481 481  1. Battery Info (2 bytes): Battery voltage
482 482  1. PAYVER (1 byte): Defined by AT+PAYVER
483 483  1. PAYLOAD COUNT (1 byte): Total how many uplinks of this sampling.
484 484  1. PAYLOAD# (1 byte): Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
485 -1. DATA: Valid value: max 6 bytes(US915 version here, [[Notice*!>>path:#max_byte]]) for each uplink so each uplink <= 11 bytes. For the last uplink, DATA will might less than 6 bytes
492 +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
486 486  
487 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image020.png]]
494 +[[image:1653269916228-732.png]]
488 488  
489 489  
490 490  So totally there will be 3 uplinks for this sampling, each uplink includes 6 bytes DATA
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