Last modified by Karry Zhuang on 2025/03/06 16:34
<
From version < 32.10 >
edited by Xiaoling
on 2022/06/02 15:26
To version < 41.1 >
edited by Xiaoling
on 2022/06/02 16:35
>
Change comment: There is no comment for this version

Summary

Details

Page properties
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/]]
... ... @@ -132,6 +132,8 @@
132 132  )))
133 133  
134 134  [[image:1653268091319-405.png]]
129 +
130 +
135 135  )))
136 136  
137 137  = 3. Operation Mode =
... ... @@ -140,6 +140,8 @@
140 140  
141 141  (((
142 142  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.
139 +
140 +
143 143  )))
144 144  
145 145  == 3.2 Example to join LoRaWAN network ==
... ... @@ -148,10 +148,15 @@
148 148  
149 149  [[image:1653268155545-638.png||height="334" width="724"]]
150 150  
149 +
151 151  (((
151 +(((
152 152  The RS485-LN in this example connected to two RS485 devices for demonstration, user can connect to other RS485 devices via the same method. The connection is as below:
153 +)))
153 153  
155 +(((
154 154  485A+ and 485B- of the sensor are connected to RS485A and RA485B of RS485-LN respectively.
157 +)))
155 155  
156 156  [[image:1653268227651-549.png||height="592" width="720"]]
157 157  
... ... @@ -203,6 +203,7 @@
203 203  
204 204  [[image:1652953568895-172.png||height="232" width="724"]]
205 205  
209 +
206 206  == 3.3 Configure Commands to read data ==
207 207  
208 208  (((
... ... @@ -212,6 +212,8 @@
212 212  
213 213  (((
214 214  (% 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 +
215 215  )))
216 216  )))
217 217  
... ... @@ -219,19 +219,19 @@
219 219  
220 220  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:
221 221  
222 -(% border="1" style="background-color:#ffffcc; color:green; width:795px" %)
223 -|(((
228 +(% border="1" style="background-color:#ffffcc; color:green; width:782px" %)
229 +|(% style="width:128px" %)(((
224 224  **AT Commands**
225 -)))|(% style="width:285px" %)(((
231 +)))|(% style="width:305px" %)(((
226 226  **Description**
227 -)))|(% style="width:347px" %)(((
233 +)))|(% style="width:346px" %)(((
228 228  **Example**
229 229  )))
230 -|(((
236 +|(% style="width:128px" %)(((
231 231  AT+BAUDR
232 -)))|(% style="width:285px" %)(((
238 +)))|(% style="width:305px" %)(((
233 233  Set the baud rate (for RS485 connection). Default Value is: 9600.
234 -)))|(% style="width:347px" %)(((
240 +)))|(% style="width:346px" %)(((
235 235  (((
236 236  AT+BAUDR=9600
237 237  )))
... ... @@ -240,11 +240,11 @@
240 240  Options: (1200,2400,4800,14400,19200,115200)
241 241  )))
242 242  )))
243 -|(((
249 +|(% style="width:128px" %)(((
244 244  AT+PARITY
245 -)))|(% style="width:285px" %)(((
251 +)))|(% style="width:305px" %)(((
246 246  Set UART parity (for RS485 connection)
247 -)))|(% style="width:347px" %)(((
253 +)))|(% style="width:346px" %)(((
248 248  (((
249 249  AT+PARITY=0
250 250  )))
... ... @@ -253,9 +253,9 @@
253 253  Option: 0: no parity, 1: odd parity, 2: even parity
254 254  )))
255 255  )))
256 -|(((
262 +|(% style="width:128px" %)(((
257 257  AT+STOPBIT
258 -)))|(% style="width:285px" %)(((
264 +)))|(% style="width:305px" %)(((
259 259  (((
260 260  Set serial stopbit (for RS485 connection)
261 261  )))
... ... @@ -263,7 +263,7 @@
263 263  (((
264 264  
265 265  )))
266 -)))|(% style="width:347px" %)(((
272 +)))|(% style="width:346px" %)(((
267 267  (((
268 268  AT+STOPBIT=0 for 1bit
269 269  )))
... ... @@ -298,77 +298,34 @@
298 298  === 3.3.3 Configure read commands for each sampling ===
299 299  
300 300  (((
301 -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.
302 -)))
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.
303 303  
304 -(((
305 -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.
306 -)))
307 -
308 -(((
309 309  To save the LoRaWAN network bandwidth, we might need to read data from different sensors and combine their valid value into a short payload.
310 -)))
311 311  
312 -(((
313 313  This section describes how to achieve above goals.
314 -)))
315 315  
316 -(((
317 -During each sampling, the RS485-BL can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
318 -)))
313 +During each sampling, the RS485-LN can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
319 319  
320 -(((
321 -**Command from RS485-BL to Sensor:**
322 -)))
323 323  
324 -(((
325 -RS485-BL can send out pre-set max 15 strings via **AT+COMMAD1**, **ATCOMMAND2**,…, to **AT+COMMANDF** . All commands are of same grammar.
326 -)))
316 +**Each RS485 commands include two parts:**
327 327  
328 -(((
329 -**Handle return from sensors to RS485-BL**:
330 -)))
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.
331 331  
332 -(((
333 -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**
334 -)))
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.
335 335  
336 -* (((
337 -**AT+DATACUT**
338 -)))
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
339 339  
340 -(((
341 -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.
342 -)))
343 343  
344 -* (((
345 -**AT+SEARCH**
346 -)))
347 -
348 -(((
349 -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.
350 -)))
351 -
352 -(((
353 -**Define wait timeout:**
354 -)))
355 -
356 -(((
357 -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
358 -)))
359 -
360 -(((
361 361  After we got the valid value from each RS485 commands, we need to combine them together with the command **AT+DATAUP**.
362 -)))
363 363  
364 -**Examples:**
365 365  
366 366  Below are examples for the how above AT Commands works.
367 367  
368 -**AT+COMMANDx : **This command will be sent to RS485/TTL devices during each sampling, Max command length is 14 bytes. The grammar is:
369 369  
370 -(% border="1" class="table-bordered" %)
371 -|(((
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" %)(((
372 372  **AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
373 373  
374 374  **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
... ... @@ -376,49 +376,15 @@
376 376  **m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command**
377 377  )))
378 378  
379 -(((
380 380  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.
381 -)))
382 382  
383 -(((
384 -In the RS485-BL, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
385 -)))
344 +In the RS485-LN, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
386 386  
387 -(((
388 -**AT+SEARCHx**: This command defines how to handle the return from AT+COMMANDx.
389 -)))
390 390  
391 -(% border="1" class="table-bordered" %)
392 -|(((
393 -**AT+SEARCHx=aa,xx xx xx xx xx**
394 -
395 -* **aa: 1: prefix match mode; 2: prefix and suffix match mode**
396 -* **xx xx xx xx xx: match string. Max 5 bytes for prefix and 5 bytes for suffix**
397 -
398 -
399 -)))
400 -
401 -**Examples:**
402 -
403 -~1. For a return string from AT+COMMAND1: 16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
404 -
405 -If we set AT+SEARCH1=1,1E 56 34.      (max 5 bytes for prefix)
406 -
407 -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**
408 -
409 -[[image:1653269403619-508.png]]
410 -
411 -2. For a return string from AT+COMMAND1:  16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
412 -
413 -If we set AT+SEARCH1=2, 1E 56 34+31 00 49
414 -
415 -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**
416 -
417 -[[image:1653269438444-278.png]]
418 -
419 419  **AT+DATACUTx : **This command defines how to handle the return from AT+COMMANDx, max return length is 45 bytes.
420 420  
421 -|(((
349 +(% border="1" style="background-color:#4bacc6; color:white; width:725px" %)
350 +|(% style="width:722px" %)(((
422 422  **AT+DATACUTx=a,b,c**
423 423  
424 424  * **a: length for the return of AT+COMMAND**
... ... @@ -426,48 +426,37 @@
426 426  * **c: define the position for valid value.  **
427 427  )))
428 428  
429 -Examples:
358 +**Examples:**
430 430  
431 431  * Grab bytes:
432 432  
433 -[[image:1653269551753-223.png||height="311" width="717"]]
362 +[[image:image-20220602153621-1.png]]
434 434  
364 +
435 435  * Grab a section.
436 436  
437 -[[image:1653269568276-930.png||height="325" width="718"]]
367 +[[image:image-20220602153621-2.png]]
438 438  
369 +
439 439  * Grab different sections.
440 440  
441 -[[image:1653269593172-426.png||height="303" width="725"]]
372 +[[image:image-20220602153621-3.png]]
442 442  
443 -(% style="color:red" %)**Note:**
374 +
375 +)))
444 444  
445 -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.
446 -
447 -Example:
448 -
449 -(% style="color:red" %)AT+COMMAND1=11 01 1E D0,0
450 -
451 -(% style="color:red" %)AT+SEARCH1=1,1E 56 34
452 -
453 -(% style="color:red" %)AT+DATACUT1=0,2,1~~5
454 -
455 -(% style="color:red" %)Return string from AT+COMMAND1: 16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
456 -
457 -(% style="color:red" %)String after SEARCH command: 2e 30 58 5f 36 41 30 31 00 49
458 -
459 -(% style="color:red" %)Valid payload after DataCUT command: 2e 30 58 5f 36
460 -
461 -[[image:1653269618463-608.png]]
462 -
463 463  === 3.3.4 Compose the uplink payload ===
464 464  
465 465  (((
466 466  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 +
467 467  )))
468 468  
469 469  (((
470 -(% style="color:#4f81bd" %)**Examples: AT+DATAUP=0**
386 +(% style="color:#037691" %)**Examples: AT+DATAUP=0**
387 +
388 +
471 471  )))
472 472  
473 473  (((
... ... @@ -488,8 +488,10 @@
488 488  
489 489  [[image:1653269759169-150.png||height="513" width="716"]]
490 490  
491 -(% style="color:#4f81bd" %)**Examples: AT+DATAUP=1**
492 492  
410 +(% style="color:#037691" %)**Examples: AT+DATAUP=1**
411 +
412 +
493 493  Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
494 494  
495 495  Final Payload is
... ... @@ -496,700 +496,107 @@
496 496  
497 497  (% style="color:#4f81bd" %)**Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
498 498  
499 -1. Battery Info (2 bytes): Battery voltage
500 -1. PAYVER (1 byte): Defined by AT+PAYVER
501 -1. PAYLOAD COUNT (1 byte): Total how many uplinks of this sampling.
502 -1. PAYLOAD# (1 byte): Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
503 -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
504 504  
505 -[[image:1653269916228-732.png||height="433" width="711"]]
424 +[[image:image-20220602155039-4.png]]
506 506  
507 507  
508 -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
509 509  
510 -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**
511 511  
512 -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**
513 513  
514 -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**
515 515  
516 -Below are the uplink payloads:
517 517  
518 -[[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:
519 519  
438 + ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink.
520 520  
521 -(% 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.
522 522  
523 - ~* 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.
524 524  
525 - * 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.
526 526  
527 - * For US915 band, max 11 bytes for each uplink ( so 11 -5 = 6 max valid date).
528 528  
529 - ~* For all other bands: max 51 bytes for each uplink  ( so 51 -5 = 46 max valid date).
447 +Below are the uplink payloads:
530 530  
449 +[[image:1654157178836-407.png]]
450 +
451 +
531 531  === 3.3.5 Uplink on demand ===
532 532  
533 -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.
534 534  
535 535  Downlink control command:
536 536  
537 -[[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.
538 538  
539 -[[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.
540 540  
541 541  
542 542  
543 -1.
544 -11.
545 -111. Uplink on Interrupt
464 +=== 3.3.6 Uplink on Interrupt ===
546 546  
547 -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.
548 548  
549 -AT+INTMOD=0  Disable Interrupt
468 +[[image:1654157342174-798.png]]
550 550  
551 -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.
552 552  
553 -AT+INTMOD=2  Interrupt trigger by falling edge. ( Default Value)
554 554  
555 -AT+INTMOD=3  Interrupt trigger by rising edge.
473 +== 3.4 Uplink Payload ==
556 556  
557 -
558 -1.
559 -11. Uplink Payload
560 -
561 -|**Size(bytes)**|**2**|**1**|**Length depends on the return from the commands**
562 -|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" %)(((
563 563  Battery(mV)
564 564  
565 565  &
566 566  
567 567  Interrupt _Flag
568 -)))|(((
483 +)))|(% style="width:116px" %)(((
569 569  PAYLOAD_VER
570 570  
571 571  
572 -)))|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.
573 573  
574 574  Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
575 575  
576 576  
577 -function Decoder(bytes, port) {
492 +== 3.5 Configure RS485-BL via AT or Downlink ==
578 578  
579 -~/~/Payload Formats of RS485-BL Deceive
494 +User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
580 580  
581 -return {
582 -
583 - ~/~/Battery,units:V
584 -
585 - BatV:((bytes[0]<<8 | bytes[1])&0x7fff)/1000,
586 -
587 - ~/~/GPIO_EXTI 
588 -
589 - EXTI_Trigger:(bytes[0] & 0x80)? "TRUE":"FALSE",
590 -
591 - ~/~/payload of version
592 -
593 - Pay_ver:bytes[2],
594 -
595 - };
596 -
597 - }
598 -
599 -
600 -
601 -
602 -
603 -
604 -
605 -TTN V3 uplink screen shot.
606 -
607 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image023.png]]
608 -
609 -1.
610 -11. Configure RS485-BL via AT or Downlink
611 -
612 -User can configure RS485-BL via [[AT Commands >>path:#_​Using_the_AT]]or LoRaWAN Downlink Commands
613 -
614 614  There are two kinds of Commands:
615 615  
616 -* **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
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]]
617 617  
618 -* **Sensor Related Commands**: These commands are special designed for RS485-BL.  User can see these commands below:
500 +* (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-LN.  User can see these commands below:
619 619  
620 -1.
621 -11.
622 -111. Common Commands:
623 623  
624 -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]]
503 +=== 3.5.1 Common Commands ===
625 625  
505 +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]]
626 626  
627 -1.
628 -11.
629 -111. Sensor related commands:
630 630  
631 -==== Choose Device Type (RS485 or TTL) ====
508 +=== 3.5.2 Sensor related commands ===
632 632  
633 -RS485-BL can connect to either RS485 sensors or TTL sensor. User need to specify what type of sensor need to connect.
510 +Response feature is added to the server's downlink, a special package with a FPort of 200 will be uploaded immediately after receiving the data sent by the server.
634 634  
635 -* AT Command
512 +[[image:image-20220602163333-5.png||height="263" width="1160"]]
636 636  
637 -**AT+MOD=1** ~/~/ Set to support RS485-MODBUS type sensors. User can connect multiply RS485 , Modbus sensors to the A / B pins.
514 +The first byte of this package represents whether the configuration is successful, 00 represents failure, 01 represents success. Except for the first byte, the other is the previous downlink. (All commands except A8 type commands are applicable)
638 638  
639 -**AT+MOD=2** ~/~/ Set to support TTL Level sensors, User can connect one TTL Sensor to the TXD/RXD/GND pins.
640 640  
517 +3.5.3 Sensor related commands
641 641  
642 -* Downlink Payload
519 +(% class="wikigeneratedid" %)
520 +==== ====
643 643  
644 -**0A aa**     à same as AT+MOD=aa
645 -
646 -
647 -
648 -==== [[RS485 Debug Command>>path:#downlink_A8]] (AT+CFGDEV) ====
649 -
650 -This command is used to configure the RS485 or TTL sensors; they won’t be used during sampling.
651 -
652 -* AT Command
653 -
654 -AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
655 -
656 -m: 0: no CRC; 1: add CRC-16/MODBUS in the end of this command.
657 -
658 -
659 -
660 -* Downlink Payload
661 -
662 -Format: A8 MM NN XX XX XX XX YY
663 -
664 -Where:
665 -
666 -* MM: 1: add CRC-16/MODBUS ; 0: no CRC
667 -* NN: The length of RS485 command
668 -* XX XX XX XX: RS485 command total NN bytes
669 -* YY: How many bytes will be uplink from the return of this RS485 command, if YY=0, RS485-BL will execute the downlink command without uplink; if YY>0, RS485-BL will uplink total YY bytes from the output of this RS485 command
670 -
671 -**Example 1:**
672 -
673 -To connect a Modbus Alarm with below commands.
674 -
675 -* 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.
676 -
677 -* 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.
678 -
679 -So if user want to use downlink command to control to RS485 Alarm, he can use:
680 -
681 -**A8 01 06 0A 05 00 04 00 01 00**: to activate the RS485 Alarm
682 -
683 -**A8 01 06 0A 05 00 04 00 00 00**: to deactivate the RS485 Alarm
684 -
685 -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.
686 -
687 -
688 -**Example 2:**
689 -
690 -Check TTL Sensor return:
691 -
692 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image024.png]]
693 -
694 -
695 -
696 -
697 -==== Set Payload version ====
698 -
699 -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.
700 -
701 -* AT Command:
702 -
703 -AT+PAYVER: Set PAYVER field = 1
704 -
705 -
706 -* Downlink Payload:
707 -
708 -0xAE 01   à Set PAYVER field =  0x01
709 -
710 -0xAE 0F   à Set PAYVER field =  0x0F
711 -
712 -
713 -==== Set RS485 Sampling Commands ====
714 -
715 -AT+COMMANDx, AT+DATACUTx and AT+SEARCHx
716 -
717 -These three commands are used to configure how the RS485-BL polling data from Modbus device. Detail of usage please see : [[polling RS485 device>>path:#polling_485]].
718 -
719 -
720 -* AT Command:
721 -
722 -AT+COMMANDx: Configure RS485 read command to sensor.
723 -
724 -AT+DATACUTx: Configure how to handle return from RS485 devices.
725 -
726 -AT+SEARCHx: Configure search command
727 -
728 -
729 -* Downlink Payload:
730 -
731 -0xAF downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
732 -
733 -Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
734 -
735 -Format: AF MM NN LL XX XX XX XX YY
736 -
737 -Where:
738 -
739 -* MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
740 -* NN: 0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
741 -* LL: The length of AT+COMMAND or AT+DATACUT command
742 -* XX XX XX XX: AT+COMMAND or AT+DATACUT command
743 -* YY: If YY=0, RS485-BL will execute the downlink command without uplink; if YY=1, RS485-BL will execute an uplink after got this command.
744 -
745 -Example:
746 -
747 -**AF 03 01 06 0A 05 00 04 00 01 00**: Same as AT+COMMAND3=0A 05 00 04 00 01,1
748 -
749 -**AF 03 02 06 10 01 05 06 09 0A 00**: Same as AT+DATACUT3=**16**,**1**,**5+6+9+10**
750 -
751 -**AF 03 02 06 0B 02 05 07 08 0A 00**: Same as AT+DATACUT3=**11**,**2**,**5~~7+8~~10**
752 -
753 -
754 -0xAB downlink command can be used for set AT+SEARCHx
755 -
756 -Example: **AB aa 01 03 xx xx xx** (03 here means there are total 3 bytes after 03) So
757 -
758 -* AB aa 01 03 xx xx xx  same as AT+SEARCHaa=1,xx xx xx
759 -* AB aa 02 03 xx xx xx 02 yy yy(03 means there are 3 bytes after 03, they are xx xx xx;02 means there are 2 bytes after 02, they are yy yy) so the commands
760 -
761 -**AB aa 02 03 xx xx xx 02 yy yy**  same as **AT+SEARCHaa=2,xx xx xx+yy yy**
762 -
763 -
764 -==== Fast command to handle MODBUS device ====
765 -
766 -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]].
767 -
768 -This command is valid since v1.3 firmware version
769 -
770 -
771 -AT+MBFUN has only two value:
772 -
773 -* AT+MBFUN=1: Enable Modbus reading. And get response base on the MODBUS return
774 -
775 -AT+MBFUN=1, device 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.
776 -
777 -* AT+MBFUN=0: Disable Modbus fast reading.
778 -
779 -Example:
780 -
781 -* AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2 are not configure (0,0,0).
782 -* 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.
783 -* 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.
784 -
785 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image025.png]]
786 -
787 -
788 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image026.png]]
789 -
790 -
791 -* Downlink Commands:
792 -
793 -A9 aa -à Same as AT+MBFUN=aa
794 -
795 -
796 -==== RS485 command timeout ====
797 -
798 -Some Modbus device has slow action to send replies. This command is used to configure the RS485-BL to use longer time to wait for their action.
799 -
800 -Default value: 0, range:  0 ~~ 5 seconds
801 -
802 -
803 -* AT Command:
804 -
805 -AT+CMDDLaa=hex(bb cc)
806 -
807 -Example:
808 -
809 -**AT+CMDDL1=1000** to send the open time to 1000ms
810 -
811 -
812 -* Downlink Payload:
813 -
814 -0x AA aa bb cc
815 -
816 -Same as: AT+CMDDLaa=hex(bb cc)
817 -
818 - Example:
819 -
820 - 0xAA 01 03 E8  à Same as **AT+CMDDL1=1000 ms**
821 -
822 -
823 -==== [[Uplink>>path:#downlink_A8]] payload mode ====
824 -
825 -Define to use one uplink or multiple uplinks for the sampling.
826 -
827 -The use of this command please see: [[Compose Uplink payload>>path:#DataUP]]
828 -
829 -* AT Command:
830 -
831 -AT+DATAUP=0
832 -
833 -AT+DATAUP=1
834 -
835 -
836 -* Downlink Payload:
837 -
838 -0xAD 00   à Same as AT+DATAUP=0
839 -
840 -0xAD 01   à Same as AT+DATAUP=1
841 -
842 -
843 -==== Manually trigger an Uplink ====
844 -
845 -Ask device to send an uplink immediately.
846 -
847 -* Downlink Payload:
848 -
849 -0x08 FF, RS485-BL will immediately send an uplink.
850 -
851 -
852 -==== Clear RS485 Command ====
853 -
854 -The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
855 -
856 -
857 -* AT Command:
858 -
859 -**AT+CMDEAR=mm,nn**   mm: start position of erase ,nn: stop position of erase
860 -
861 -Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
862 -
863 -Example screen shot after clear all RS485 commands. 
864 -
865 -
866 -
867 -The uplink screen shot is:
868 -
869 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image023.png]]
870 -
871 -
872 -* Downlink Payload:
873 -
874 -0x09 aa bb same as AT+CMDEAR=aa,bb
875 -
876 -
877 -==== Set Serial Communication Parameters ====
878 -
879 -Set the Rs485 serial communication parameters:
880 -
881 -* AT Command:
882 -
883 -Set Baud Rate:
884 -
885 -AT+BAUDR=9600    ~/~/ Options: (1200,2400,4800,14400,19200,115200)
886 -
887 -
888 -Set UART parity
889 -
890 -AT+PARITY=0    ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity
891 -
892 -
893 -Set STOPBIT
894 -
895 -AT+STOPBIT=0    ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
896 -
897 -
898 -* Downlink Payload:
899 -
900 -A7 01 aa bb: Same  AT+BAUDR=hex(aa bb)*100
901 -
902 -Example:
903 -
904 -* A7 01 00 60   same as AT+BAUDR=9600
905 -* A7 01 04 80  same as AT+BAUDR=115200
906 -
907 -A7 02 aa: Same as  AT+PARITY=aa  (aa value: 00 , 01 or 02)
908 -
909 -A7 03 aa: Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
910 -
911 -
912 -==== Control output power duration ====
913 -
914 -User can set the output power duration before each sampling.
915 -
916 -* AT Command:
917 -
918 -Example:
919 -
920 -AT+3V3T=1000 ~/~/ 3V3 output power will open 1s before each sampling.
921 -
922 -AT+5VT=1000 ~/~/ +5V output power will open 1s before each sampling.
923 -
924 -
925 -* LoRaWAN Downlink Command:
926 -
927 -07 01 aa bb  Same as AT+5VT=(aa bb)
928 -
929 -07 02 aa bb  Same as AT+3V3T=(aa bb)
930 -
931 -
932 -
933 -
934 -1.
935 -11. Buttons
936 -
937 -|**Button**|**Feature**
938 -|**RST**|Reboot RS485-BL
939 -
940 -1.
941 -11. +3V3 Output
942 -
943 -RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor.
944 -
945 -The +3V3 output will be valid for every sampling. RS485-BL will enable +3V3 output before all sampling and disable the +3V3 after all sampling. 
946 -
947 -
948 -The +3V3 output time can be controlled by AT Command.
949 -
950 -**AT+3V3T=1000**
951 -
952 -Means set +3v3 valid time to have 1000ms. So, the real +3v3 output will actually have 1000ms + sampling time for other sensors.
953 -
954 -
955 -By default, the AT+3V3T=0. This is a special case, means the +3V3 output is always on at any time
956 -
957 -
958 -1.
959 -11. +5V Output
960 -
961 -RS485-BL has a Controllable +5V output, user can use this output to power external sensor.
962 -
963 -The +5V output will be valid for every sampling. RS485-BL will enable +5V output before all sampling and disable the +5v after all sampling. 
964 -
965 -
966 -The 5V output time can be controlled by AT Command.
967 -
968 -**AT+5VT=1000**
969 -
970 -Means set 5V valid time to have 1000ms. So, the real 5V output will actually have 1000ms + sampling time for other sensors.
971 -
972 -
973 -By default, the AT+5VT=0. If the external sensor which require 5v and require more time to get stable state, user can use this command to increase the power ON duration for this sensor.
974 -
975 -
976 -
977 -
978 -1.
979 -11. LEDs
980 -
981 -|**LEDs**|**Feature**
982 -|**LED1**|Blink when device transmit a packet.
983 -
984 -1.
985 -11. Switch Jumper
986 -
987 -|**Switch Jumper**|**Feature**
988 -|**SW1**|(((
989 -ISP position: Upgrade firmware via UART
990 -
991 -Flash position: Configure device, check running status.
992 -)))
993 -|**SW2**|(((
994 -5V position: set to compatible with 5v I/O.
995 -
996 -3.3v position: set to compatible with 3.3v I/O.,
997 -)))
998 -
999 -+3.3V: is always ON
1000 -
1001 -+5V: Only open before every sampling. The time is by default, it is AT+5VT=0.  Max open time. 5000 ms.
1002 -
1003 -1. Case Study
1004 -
1005 -User can check this URL for some case studies.
1006 -
1007 -[[http:~~/~~/wiki.dragino.com/index.php?title=APP_RS485_COMMUNICATE_WITH_SENSORS>>url:http://wiki.dragino.com/index.php?title=APP_RS485_COMMUNICATE_WITH_SENSORS]]
1008 -
1009 -
1010 -
1011 -
1012 -1. Use AT Command
1013 -11. Access AT Command
1014 -
1015 -RS485-BL supports AT Command set. User can use a USB to TTL adapter plus the 3.5mm Program Cable to connect to RS485-BL to use AT command, as below.
1016 -
1017 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image027.png]]
1018 -
1019 -
1020 -In PC, User needs to set **serial tool**(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to **9600** to access to access serial console of RS485-BL. The default password is 123456. Below is the output for reference:
1021 -
1022 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image028.png]]
1023 -
1024 -
1025 -
1026 -More detail AT Command manual can be found at [[AT Command Manual>>path:#AT_COMMAND]]
1027 -
1028 -
1029 -
1030 -1.
1031 -11. Common AT Command Sequence
1032 -111. Multi-channel ABP mode (Use with SX1301/LG308)
1033 -
1034 -If device has not joined network yet:
1035 -
1036 -AT+FDR
1037 -
1038 -AT+NJM=0
1039 -
1040 -ATZ
1041 -
1042 -
1043 -If device already joined network:
1044 -
1045 -AT+NJM=0
1046 -
1047 -ATZ
1048 -
1049 -1.
1050 -11.
1051 -111. Single-channel ABP mode (Use with LG01/LG02)
1052 -
1053 -AT+FDR   Reset Parameters to Factory Default, Keys Reserve
1054 -
1055 -AT+NJM=0 Set to ABP mode
1056 -
1057 -AT+ADR=0 Set the Adaptive Data Rate Off
1058 -
1059 -AT+DR=5  Set Data Rate
1060 -
1061 -AT+TDC=60000  Set transmit interval to 60 seconds
1062 -
1063 -AT+CHS=868400000 Set transmit frequency to 868.4Mhz
1064 -
1065 -AT+RX2FQ=868400000 Set RX2Frequency to 868.4Mhz (according to the result from server)
1066 -
1067 -AT+RX2DR=5  Set RX2DR to match the downlink DR from server. see below
1068 -
1069 -AT+DADDR=26 01 1A F1 Set Device Address to 26 01 1A F1, this ID can be found in the LoRa Server portal.
1070 -
1071 -ATZ          Reset MCU
1072 -
1073 -**Note:**
1074 -
1075 -1. Make sure the device is set to ABP mode in the IoT Server.
1076 -1. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1077 -1. Make sure SF / bandwidth setting in LG01/LG02 match the settings of AT+DR. refer [[this link>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.
1078 -1. The command AT+RX2FQ and AT+RX2DR is to let downlink work. to set the correct parameters, user can check the actually downlink parameters to be used. As below. Which shows the RX2FQ should use 868400000 and RX2DR should be 5
1079 -
1080 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image029.png]]
1081 -
1082 -
1083 -1. FAQ
1084 -11. How to upgrade the image?
1085 -
1086 -The RS485-BL LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-BL to:
1087 -
1088 -* Support new features
1089 -* For bug fix
1090 -* Change LoRaWAN bands.
1091 -
1092 -Below shows the hardware connection for how to upload an image to RS485-BL:
1093 -
1094 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image030.png]]
1095 -
1096 -**Step1:** Download [[flash loader>>url:https://www.st.com/content/st_com/en/products/development-tools/software-development-tools/stm32-software-development-tools/stm32-programmers/flasher-stm32.html]].
1097 -
1098 -**Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
1099 -
1100 -**Step3: **Open flashloader; choose the correct COM port to update.
1101 -
1102 -
1103 -|(((
1104 -HOLD PRO then press the RST button, SYS will be ON, then click next
1105 -)))
1106 -
1107 -|(((
1108 -Board detected
1109 -)))
1110 -
1111 -|(((
1112 -
1113 -)))
1114 -
1115 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image031.png]] [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image032.png]]
1116 -
1117 -
1118 -
1119 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image033.png]] [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image034.png]]
1120 -
1121 -
1122 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image035.png]] [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image036.png]]
1123 -
1124 -
1125 -1.
1126 -11. How to change the LoRa Frequency Bands/Region?
1127 -
1128 -User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download.
1129 -
1130 -
1131 -
1132 -1.
1133 -11. How many RS485-Slave can RS485-BL connects?
1134 -
1135 -The RS485-BL can support max 32 RS485 devices. Each uplink command of RS485-BL can support max 16 different RS485 command. So RS485-BL can support max 16 RS485 devices pre-program in the device for uplink. For other devices no pre-program, user can use the [[downlink message (type code 0xA8) to poll their info>>path:#downlink_A8]].
1136 -
1137 -
1138 -
1139 -
1140 -1. Trouble Shooting     
1141 -11. Downlink doesn’t work, how to solve it?
1142 -
1143 -Please see this link for debug:
1144 -
1145 -[[http:~~/~~/wiki.dragino.com/index.php?title=Main_Page#LoRaWAN_Communication_Debug>>url:http://wiki.dragino.com/index.php?title=Main_Page#LoRaWAN_Communication_Debug]] 
1146 -
1147 -
1148 -
1149 -1.
1150 -11. Why I can’t join TTN V3 in US915 /AU915 bands?
1151 -
1152 -It might about the channels mapping. Please see for detail.
1153 -
1154 -[[http:~~/~~/wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#Notice_of_US915.2FCN470.2FAU915_Frequency_band>>url:http://wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#Notice_of_US915.2FCN470.2FAU915_Frequency_band]]
1155 -
1156 -
1157 -
1158 -1. Order Info
1159 -
1160 -**Part Number: RS485-BL-XXX**
1161 -
1162 -**XXX:**
1163 -
1164 -* **EU433**: frequency bands EU433
1165 -* **EU868**: frequency bands EU868
1166 -* **KR920**: frequency bands KR920
1167 -* **CN470**: frequency bands CN470
1168 -* **AS923**: frequency bands AS923
1169 -* **AU915**: frequency bands AU915
1170 -* **US915**: frequency bands US915
1171 -* **IN865**: frequency bands IN865
1172 -* **RU864**: frequency bands RU864
1173 -* **KZ865: **frequency bands KZ865
1174 -
1175 -1. Packing Info
1176 -
1177 -**Package Includes**:
1178 -
1179 -* RS485-BL x 1
1180 -* Stick Antenna for LoRa RF part x 1
1181 -* Program cable x 1
1182 -
1183 -**Dimension and weight**:
1184 -
1185 -* Device Size: 13.5 x 7 x 3 cm
1186 -* Device Weight: 105g
1187 -* Package Size / pcs : 14.5 x 8 x 5 cm
1188 -* Weight / pcs : 170g
1189 -
1190 -1. Support
1191 -
1192 -* Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
1193 -* Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to
1194 -
1195 -[[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]]
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