Last modified by Karry Zhuang on 2025/03/06 16:34
<
From version < 32.15 >
edited by Xiaoling
on 2022/06/02 15:26
To version < 38.3 >
edited by Xiaoling
on 2022/06/02 16:10
>
Change comment: There is no comment for this version

Summary

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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/]]
... ... @@ -231,19 +231,19 @@
231 231  
232 232  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:
233 233  
234 -(% border="1" style="background-color:#ffffcc; color:green; width:795px" %)
235 -|(((
228 +(% border="1" style="background-color:#ffffcc; color:green; width:782px" %)
229 +|(% style="width:128px" %)(((
236 236  **AT Commands**
237 -)))|(% style="width:285px" %)(((
231 +)))|(% style="width:305px" %)(((
238 238  **Description**
239 -)))|(% style="width:347px" %)(((
233 +)))|(% style="width:346px" %)(((
240 240  **Example**
241 241  )))
242 -|(((
236 +|(% style="width:128px" %)(((
243 243  AT+BAUDR
244 -)))|(% style="width:285px" %)(((
238 +)))|(% style="width:305px" %)(((
245 245  Set the baud rate (for RS485 connection). Default Value is: 9600.
246 -)))|(% style="width:347px" %)(((
240 +)))|(% style="width:346px" %)(((
247 247  (((
248 248  AT+BAUDR=9600
249 249  )))
... ... @@ -252,11 +252,11 @@
252 252  Options: (1200,2400,4800,14400,19200,115200)
253 253  )))
254 254  )))
255 -|(((
249 +|(% style="width:128px" %)(((
256 256  AT+PARITY
257 -)))|(% style="width:285px" %)(((
251 +)))|(% style="width:305px" %)(((
258 258  Set UART parity (for RS485 connection)
259 -)))|(% style="width:347px" %)(((
253 +)))|(% style="width:346px" %)(((
260 260  (((
261 261  AT+PARITY=0
262 262  )))
... ... @@ -265,9 +265,9 @@
265 265  Option: 0: no parity, 1: odd parity, 2: even parity
266 266  )))
267 267  )))
268 -|(((
262 +|(% style="width:128px" %)(((
269 269  AT+STOPBIT
270 -)))|(% style="width:285px" %)(((
264 +)))|(% style="width:305px" %)(((
271 271  (((
272 272  Set serial stopbit (for RS485 connection)
273 273  )))
... ... @@ -275,7 +275,7 @@
275 275  (((
276 276  
277 277  )))
278 -)))|(% style="width:347px" %)(((
272 +)))|(% style="width:346px" %)(((
279 279  (((
280 280  AT+STOPBIT=0 for 1bit
281 281  )))
... ... @@ -310,77 +310,34 @@
310 310  === 3.3.3 Configure read commands for each sampling ===
311 311  
312 312  (((
313 -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.
314 -)))
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.
315 315  
316 -(((
317 -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.
318 -)))
319 -
320 -(((
321 321  To save the LoRaWAN network bandwidth, we might need to read data from different sensors and combine their valid value into a short payload.
322 -)))
323 323  
324 -(((
325 325  This section describes how to achieve above goals.
326 -)))
327 327  
328 -(((
329 -During each sampling, the RS485-BL can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
330 -)))
313 +During each sampling, the RS485-LN can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
331 331  
332 -(((
333 -**Command from RS485-BL to Sensor:**
334 -)))
335 335  
336 -(((
337 -RS485-BL can send out pre-set max 15 strings via **AT+COMMAD1**, **ATCOMMAND2**,…, to **AT+COMMANDF** . All commands are of same grammar.
338 -)))
316 +**Each RS485 commands include two parts:**
339 339  
340 -(((
341 -**Handle return from sensors to RS485-BL**:
342 -)))
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.
343 343  
344 -(((
345 -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**
346 -)))
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.
347 347  
348 -* (((
349 -**AT+DATACUT**
350 -)))
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
351 351  
352 -(((
353 -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.
354 -)))
355 355  
356 -* (((
357 -**AT+SEARCH**
358 -)))
359 -
360 -(((
361 -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.
362 -)))
363 -
364 -(((
365 -**Define wait timeout:**
366 -)))
367 -
368 -(((
369 -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
370 -)))
371 -
372 -(((
373 373  After we got the valid value from each RS485 commands, we need to combine them together with the command **AT+DATAUP**.
374 -)))
375 375  
376 -**Examples:**
377 377  
378 378  Below are examples for the how above AT Commands works.
379 379  
380 -**AT+COMMANDx : **This command will be sent to RS485/TTL devices during each sampling, Max command length is 14 bytes. The grammar is:
381 381  
382 -(% border="1" class="table-bordered" %)
383 -|(((
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" %)(((
384 384  **AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
385 385  
386 386  **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
... ... @@ -388,49 +388,15 @@
388 388  **m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command**
389 389  )))
390 390  
391 -(((
392 392  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.
393 -)))
394 394  
395 -(((
396 -In the RS485-BL, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
397 -)))
344 +In the RS485-LN, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
398 398  
399 -(((
400 -**AT+SEARCHx**: This command defines how to handle the return from AT+COMMANDx.
401 -)))
402 402  
403 -(% border="1" class="table-bordered" %)
404 -|(((
405 -**AT+SEARCHx=aa,xx xx xx xx xx**
406 -
407 -* **aa: 1: prefix match mode; 2: prefix and suffix match mode**
408 -* **xx xx xx xx xx: match string. Max 5 bytes for prefix and 5 bytes for suffix**
409 -
410 -
411 -)))
412 -
413 -**Examples:**
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 -If we set AT+SEARCH1=1,1E 56 34.      (max 5 bytes for prefix)
418 -
419 -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**
420 -
421 -[[image:1653269403619-508.png]]
422 -
423 -2. For a return string from AT+COMMAND1:  16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
424 -
425 -If we set AT+SEARCH1=2, 1E 56 34+31 00 49
426 -
427 -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**
428 -
429 -[[image:1653269438444-278.png]]
430 -
431 431  **AT+DATACUTx : **This command defines how to handle the return from AT+COMMANDx, max return length is 45 bytes.
432 432  
433 -|(((
349 +(% border="1" style="background-color:#4bacc6; color:white; width:725px" %)
350 +|(% style="width:722px" %)(((
434 434  **AT+DATACUTx=a,b,c**
435 435  
436 436  * **a: length for the return of AT+COMMAND**
... ... @@ -438,48 +438,37 @@
438 438  * **c: define the position for valid value.  **
439 439  )))
440 440  
441 -Examples:
358 +**Examples:**
442 442  
443 443  * Grab bytes:
444 444  
445 -[[image:1653269551753-223.png||height="311" width="717"]]
362 +[[image:image-20220602153621-1.png]]
446 446  
364 +
447 447  * Grab a section.
448 448  
449 -[[image:1653269568276-930.png||height="325" width="718"]]
367 +[[image:image-20220602153621-2.png]]
450 450  
369 +
451 451  * Grab different sections.
452 452  
453 -[[image:1653269593172-426.png||height="303" width="725"]]
372 +[[image:image-20220602153621-3.png]]
454 454  
455 -(% style="color:red" %)**Note:**
374 +
375 +)))
456 456  
457 -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.
458 -
459 -Example:
460 -
461 -(% style="color:red" %)AT+COMMAND1=11 01 1E D0,0
462 -
463 -(% style="color:red" %)AT+SEARCH1=1,1E 56 34
464 -
465 -(% style="color:red" %)AT+DATACUT1=0,2,1~~5
466 -
467 -(% style="color:red" %)Return string from AT+COMMAND1: 16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
468 -
469 -(% style="color:red" %)String after SEARCH command: 2e 30 58 5f 36 41 30 31 00 49
470 -
471 -(% style="color:red" %)Valid payload after DataCUT command: 2e 30 58 5f 36
472 -
473 -[[image:1653269618463-608.png]]
474 -
475 475  === 3.3.4 Compose the uplink payload ===
476 476  
477 477  (((
478 478  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 +
479 479  )))
480 480  
481 481  (((
482 -(% style="color:#4f81bd" %)**Examples: AT+DATAUP=0**
386 +(% style="color:#037691" %)**Examples: AT+DATAUP=0**
387 +
388 +
483 483  )))
484 484  
485 485  (((
... ... @@ -500,8 +500,10 @@
500 500  
501 501  [[image:1653269759169-150.png||height="513" width="716"]]
502 502  
503 -(% style="color:#4f81bd" %)**Examples: AT+DATAUP=1**
504 504  
410 +(% style="color:#037691" %)**Examples: AT+DATAUP=1**
411 +
412 +
505 505  Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
506 506  
507 507  Final Payload is
... ... @@ -508,66 +508,61 @@
508 508  
509 509  (% style="color:#4f81bd" %)**Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
510 510  
511 -1. Battery Info (2 bytes): Battery voltage
512 -1. PAYVER (1 byte): Defined by AT+PAYVER
513 -1. PAYLOAD COUNT (1 byte): Total how many uplinks of this sampling.
514 -1. PAYLOAD# (1 byte): Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
515 -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
516 516  
517 -[[image:1653269916228-732.png||height="433" width="711"]]
424 +[[image:image-20220602155039-4.png]]
518 518  
519 519  
520 -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
521 521  
522 -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**
523 523  
524 -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**
525 525  
526 -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**
527 527  
528 -Below are the uplink payloads:
529 529  
530 -[[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:
531 531  
438 + ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink.
532 532  
533 -(% 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.
534 534  
535 - ~* 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.
536 536  
537 - * 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.
538 538  
539 - * For US915 band, max 11 bytes for each uplink ( so 11 -5 = 6 max valid date).
540 540  
541 - ~* For all other bands: max 51 bytes for each uplink  ( so 51 -5 = 46 max valid date).
447 +Below are the uplink payloads:
542 542  
449 +[[image:1654157178836-407.png]]
450 +
451 +
543 543  === 3.3.5 Uplink on demand ===
544 544  
545 -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.
546 546  
547 547  Downlink control command:
548 548  
549 -[[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.
550 550  
551 -[[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.
552 552  
553 553  
554 554  
555 -1.
556 -11.
557 -111. Uplink on Interrupt
464 +=== 3.3.6 Uplink on Interrupt ===
558 558  
559 -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.
560 560  
561 -AT+INTMOD=0  Disable Interrupt
468 +[[image:1654157342174-798.png]]
562 562  
563 -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.
564 564  
565 -AT+INTMOD=2  Interrupt trigger by falling edge. ( Default Value)
566 566  
567 -AT+INTMOD=3  Interrupt trigger by rising edge.
568 -
569 -
570 -1.
473 +1.
571 571  11. Uplink Payload
572 572  
573 573  |**Size(bytes)**|**2**|**1**|**Length depends on the return from the commands**
... ... @@ -629,15 +629,15 @@
629 629  
630 630  * **Sensor Related Commands**: These commands are special designed for RS485-BL.  User can see these commands below:
631 631  
632 -1.
633 -11.
535 +1.
536 +11.
634 634  111. Common Commands:
635 635  
636 636  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]]
637 637  
638 638  
639 -1.
640 -11.
542 +1.
543 +11.
641 641  111. Sensor related commands:
642 642  
643 643  ==== Choose Device Type (RS485 or TTL) ====
... ... @@ -943,13 +943,13 @@
943 943  
944 944  
945 945  
946 -1.
849 +1.
947 947  11. Buttons
948 948  
949 949  |**Button**|**Feature**
950 950  |**RST**|Reboot RS485-BL
951 951  
952 -1.
855 +1.
953 953  11. +3V3 Output
954 954  
955 955  RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor.
... ... @@ -967,7 +967,7 @@
967 967  By default, the AT+3V3T=0. This is a special case, means the +3V3 output is always on at any time
968 968  
969 969  
970 -1.
873 +1.
971 971  11. +5V Output
972 972  
973 973  RS485-BL has a Controllable +5V output, user can use this output to power external sensor.
... ... @@ -987,13 +987,13 @@
987 987  
988 988  
989 989  
990 -1.
893 +1.
991 991  11. LEDs
992 992  
993 993  |**LEDs**|**Feature**
994 994  |**LED1**|Blink when device transmit a packet.
995 995  
996 -1.
899 +1.
997 997  11. Switch Jumper
998 998  
999 999  |**Switch Jumper**|**Feature**
... ... @@ -1039,7 +1039,7 @@
1039 1039  
1040 1040  
1041 1041  
1042 -1.
945 +1.
1043 1043  11. Common AT Command Sequence
1044 1044  111. Multi-channel ABP mode (Use with SX1301/LG308)
1045 1045  
... ... @@ -1058,8 +1058,8 @@
1058 1058  
1059 1059  ATZ
1060 1060  
1061 -1.
1062 -11.
964 +1.
965 +11.
1063 1063  111. Single-channel ABP mode (Use with LG01/LG02)
1064 1064  
1065 1065  AT+FDR   Reset Parameters to Factory Default, Keys Reserve
... ... @@ -1134,7 +1134,7 @@
1134 1134  [[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]]
1135 1135  
1136 1136  
1137 -1.
1040 +1.
1138 1138  11. How to change the LoRa Frequency Bands/Region?
1139 1139  
1140 1140  User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download.
... ... @@ -1141,7 +1141,7 @@
1141 1141  
1142 1142  
1143 1143  
1144 -1.
1047 +1.
1145 1145  11. How many RS485-Slave can RS485-BL connects?
1146 1146  
1147 1147  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]].
... ... @@ -1158,7 +1158,7 @@
1158 1158  
1159 1159  
1160 1160  
1161 -1.
1064 +1.
1162 1162  11. Why I can’t join TTN V3 in US915 /AU915 bands?
1163 1163  
1164 1164  It might about the channels mapping. Please see for detail.
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