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From version < 22.5 >
edited by Xiaoling
on 2022/05/23 09:15
To version < 30.2 >
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206 206  
207 207  === 3.3.1 onfigure UART settings for RS485 or TTL communication ===
208 208  
209 -RS485-BL can connect to either RS485 sensors or TTL sensor. User need to specify what type of sensor need to connect.
209 +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:
210 210  
211 -**~1. RS485-MODBUS mode:**
212 -
213 -AT+MOD=1 ~/~/ Support RS485-MODBUS type sensors. User can connect multiply RS485 , Modbus sensors to the A / B pins.
214 -
215 -**2. TTL mode:**
216 -
217 -AT+MOD=2 ~/~/ Support TTL Level sensors, User can connect one TTL Sensor to the TXD/RXD/GND pins.
218 -
219 -RS485-BL default UART settings is **9600, no parity, stop bit 1**. If the sensor has a different settings, user can change the RS485-BL setting to match.
220 -
221 221  (% border="1" style="background-color:#ffffcc; color:green; width:795px" %)
222 222  |(((
223 223  **AT Commands**
... ... @@ -242,13 +242,7 @@
242 242  |(((
243 243  AT+PARITY
244 244  )))|(% style="width:285px" %)(((
245 -(((
246 246  Set UART parity (for RS485 connection)
247 -)))
248 -
249 -(((
250 -Default Value is: no parity.
251 -)))
252 252  )))|(% style="width:347px" %)(((
253 253  (((
254 254  AT+PARITY=0
... ... @@ -266,7 +266,7 @@
266 266  )))
267 267  
268 268  (((
269 -Default Value is: 1bit.
253 +
270 270  )))
271 271  )))|(% style="width:347px" %)(((
272 272  (((
... ... @@ -285,12 +285,10 @@
285 285  === 3.3.2 Configure sensors ===
286 286  
287 287  (((
288 -Some sensors might need to configure before normal operation. User can configure such sensor via PC or through RS485-BL AT Commands (% style="color:#4f81bd" %)**AT+CFGDEV**.
289 -)))
290 -
291 291  (((
292 -When user issue an (% style="color:#4f81bd" %)**AT+CFGDEV**(%%) command, Each (% style="color:#4f81bd" %)**AT+CFGDEV**(%%) equals to send a command to the RS485 or TTL sensors. This command will only run when user input it and won’t run during each sampling.
273 +Some sensors might need to configure before normal operation. User can configure such sensor via PC and RS485 adapter or through RS485-LN AT Commands (% style="color:#4f81bd" %)**AT+CFGDEV**(%%). Each (% style="color:#4f81bd" %)**AT+CFGDEV **(%%)equals to send a RS485 command to sensors. This command will only run when user input it and won’t run during each sampling.
293 293  )))
275 +)))
294 294  
295 295  (% border="1" style="background-color:#ffffcc; color:green; width:806px" %)
296 296  |**AT Commands**|(% style="width:418px" %)**Description**|(% style="width:256px" %)**Example**
... ... @@ -302,8 +302,6 @@
302 302  mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
303 303  )))|(% style="width:256px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
304 304  
305 -Detail of AT+CFGDEV command see [[AT+CFGDEV detail>>path:#AT_CFGDEV]].
306 -
307 307  === 3.3.3 Configure read commands for each sampling ===
308 308  
309 309  (((
... ... @@ -385,11 +385,17 @@
385 385  **m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command**
386 386  )))
387 387  
368 +(((
388 388  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 +)))
389 389  
372 +(((
390 390  In the RS485-BL, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
374 +)))
391 391  
376 +(((
392 392  **AT+SEARCHx**: This command defines how to handle the return from AT+COMMANDx.
378 +)))
393 393  
394 394  (% border="1" class="table-bordered" %)
395 395  |(((
... ... @@ -401,26 +401,24 @@
401 401  
402 402  )))
403 403  
404 -Examples:
390 +**Examples:**
405 405  
406 -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
407 407  
408 408  If we set AT+SEARCH1=1,1E 56 34.      (max 5 bytes for prefix)
409 409  
410 -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**
411 411  
412 -[[image:1652954654347-831.png]]
398 +[[image:1653269403619-508.png]]
413 413  
400 +2. For a return string from AT+COMMAND1:  16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
414 414  
415 -1. For a return string from AT+COMMAND1:  16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
416 -
417 417  If we set AT+SEARCH1=2, 1E 56 34+31 00 49
418 418  
419 -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**
420 420  
421 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image014.png]]
406 +[[image:1653269438444-278.png]]
422 422  
423 -
424 424  **AT+DATACUTx : **This command defines how to handle the return from AT+COMMANDx, max return length is 45 bytes.
425 425  
426 426  |(((
... ... @@ -435,76 +435,79 @@
435 435  
436 436  * Grab bytes:
437 437  
438 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image015.png]]
422 +[[image:1653269551753-223.png||height="311" width="717"]]
439 439  
440 440  * Grab a section.
441 441  
442 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image016.png]]
426 +[[image:1653269568276-930.png||height="325" width="718"]]
443 443  
444 444  * Grab different sections.
445 445  
446 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image017.png]]
430 +[[image:1653269593172-426.png||height="303" width="725"]]
447 447  
432 +(% style="color:red" %)**Note:**
448 448  
449 -Note:
450 -
451 451  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.
452 452  
453 453  Example:
454 454  
455 -AT+COMMAND1=11 01 1E D0,0
438 +(% style="color:red" %)AT+COMMAND1=11 01 1E D0,0
456 456  
457 -AT+SEARCH1=1,1E 56 34
440 +(% style="color:red" %)AT+SEARCH1=1,1E 56 34
458 458  
459 -AT+DATACUT1=0,2,1~~5
442 +(% style="color:red" %)AT+DATACUT1=0,2,1~~5
460 460  
461 -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
462 462  
463 -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
464 464  
465 -Valid payload after DataCUT command: 2e 30 58 5f 36
448 +(% style="color:red" %)Valid payload after DataCUT command: 2e 30 58 5f 36
466 466  
467 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image018.png]]
450 +[[image:1653269618463-608.png]]
468 468  
452 +=== 3.3.4 Compose the uplink payload ===
469 469  
470 -
471 -
472 -1.
473 -11.
474 -111. Compose the uplink payload
475 -
454 +(((
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.**
456 +)))
477 477  
458 +(((
459 +(% style="color:#4f81bd" %)**Examples: AT+DATAUP=0**
460 +)))
478 478  
479 -**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 +)))
480 480  
481 -Compose the uplink payload with value returns in sequence and send with **A SIGNLE UPLINK**.
482 -
466 +(((
483 483  Final Payload is
468 +)))
484 484  
485 -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 +)))
486 486  
474 +(((
487 487  Where PAYVER is defined by AT+PAYVER, below is an example screen shot.
476 +)))
488 488  
489 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image019.png]]
478 +[[image:1653269759169-150.png||height="513" width="716"]]
490 490  
480 +(% style="color:#4f81bd" %)**Examples: AT+DATAUP=1**
491 491  
482 +Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
492 492  
493 -**Examples: AT+DATAUP=1**
494 -
495 -Compose the uplink payload with value returns in sequence and send with **Multiply UPLINKs**.
496 -
497 497  Final Payload is
498 498  
499 -Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA
486 +(% style="color:#4f81bd" %)**Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
500 500  
501 501  1. Battery Info (2 bytes): Battery voltage
502 502  1. PAYVER (1 byte): Defined by AT+PAYVER
503 503  1. PAYLOAD COUNT (1 byte): Total how many uplinks of this sampling.
504 504  1. PAYLOAD# (1 byte): Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
505 -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
506 506  
507 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image020.png]]
494 +[[image:1653269916228-732.png]]
508 508  
509 509  
510 510  So totally there will be 3 uplinks for this sampling, each uplink includes 6 bytes DATA
1653269403619-508.png
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