Last modified by Karry Zhuang on 2025/03/06 16:34
<
From version < 31.2 >
edited by Xiaoling
on 2022/05/23 09:47
To version < 44.2 >
edited by Xiaoling
on 2022/06/02 16:54
>
Change comment: There is no comment for this version

Summary

Details

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Content
... ... @@ -18,26 +18,30 @@
18 18  
19 19  (((
20 20  (((
21 -The Dragino RS485-LN is a RS485 to LoRaWAN Converter. It converts the RS485 signal into LoRaWAN wireless signal which simplify the IoT installation and reduce the installation/maintaining cost.
21 +The Dragino RS485-LN is a (% style="color:blue" %)**RS485 to LoRaWAN Converter**(%%). It converts the RS485 signal into LoRaWAN wireless signal which simplify the IoT installation and reduce the installation/maintaining cost.
22 22  )))
23 23  
24 24  (((
25 -RS485-LN allows user to monitor / control RS485 devices and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, smartphone detection, building automation, and so on.
25 +RS485-LN allows user to (% style="color:blue" %)**monitor / control RS485 devices**(%%) and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, smartphone detection, building automation, and so on.
26 26  )))
27 27  
28 28  (((
29 -For data uplink, RS485-LN sends user-defined commands to RS485 devices and gets the return from the RS485 devices. RS485-LN will process these returns according to user-define rules to get the final payload and upload to LoRaWAN server.
29 +(% style="color:blue" %)**For data uplink**(%%), RS485-LN sends user-defined commands to RS485 devices and gets the return from the RS485 devices. RS485-LN will process these returns according to user-define rules to get the final payload and upload to LoRaWAN server.
30 30  )))
31 31  
32 32  (((
33 -For data downlink, RS485-LN runs in LoRaWAN Class C. When there downlink commands from LoRaWAN server, RS485-LN will forward the commands from LoRaWAN server to RS485 devices.
33 +(% style="color:blue" %)**For data downlink**(%%), RS485-LN runs in LoRaWAN Class C. When there downlink commands from LoRaWAN server, RS485-LN will forward the commands from LoRaWAN server to RS485 devices.
34 +
35 +(% style="color:blue" %)**Demo Dashboard for RS485-LN**(%%) connect to two energy meters: [[https:~~/~~/app.datacake.de/dashboard/d/58844a26-378d-4c5a-aaf5-b5b5b153447a>>url:https://app.datacake.de/dashboard/d/58844a26-378d-4c5a-aaf5-b5b5b153447a]]
34 34  )))
35 35  )))
36 36  
37 37  [[image:1653267211009-519.png||height="419" width="724"]]
38 38  
41 +
39 39  == 1.2 Specifications ==
40 40  
44 +
41 41  **Hardware System:**
42 42  
43 43  * STM32L072CZT6 MCU
... ... @@ -44,8 +44,6 @@
44 44  * SX1276/78 Wireless Chip 
45 45  * Power Consumption (exclude RS485 device):
46 46  ** Idle: 32mA@12v
47 -
48 -*
49 49  ** 20dB Transmit: 65mA@12v
50 50  
51 51  **Interface for Model:**
... ... @@ -98,6 +98,7 @@
98 98  
99 99  [[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
100 100  
103 +
101 101  == 1.6 Hardware Change log ==
102 102  
103 103  (((
... ... @@ -105,6 +105,8 @@
105 105  v1.2: Add External Interrupt Pin.
106 106  
107 107  v1.0: Release
111 +
112 +
108 108  )))
109 109  )))
110 110  
... ... @@ -121,6 +121,8 @@
121 121  )))
122 122  
123 123  [[image:1653268091319-405.png]]
129 +
130 +
124 124  )))
125 125  
126 126  = 3. Operation Mode =
... ... @@ -129,6 +129,8 @@
129 129  
130 130  (((
131 131  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 +
132 132  )))
133 133  
134 134  == 3.2 Example to join LoRaWAN network ==
... ... @@ -137,10 +137,15 @@
137 137  
138 138  [[image:1653268155545-638.png||height="334" width="724"]]
139 139  
149 +
140 140  (((
151 +(((
141 141  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 +)))
142 142  
155 +(((
143 143  485A+ and 485B- of the sensor are connected to RS485A and RA485B of RS485-LN respectively.
157 +)))
144 144  
145 145  [[image:1653268227651-549.png||height="592" width="720"]]
146 146  
... ... @@ -192,6 +192,7 @@
192 192  
193 193  [[image:1652953568895-172.png||height="232" width="724"]]
194 194  
209 +
195 195  == 3.3 Configure Commands to read data ==
196 196  
197 197  (((
... ... @@ -201,6 +201,8 @@
201 201  
202 202  (((
203 203  (% 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 +
204 204  )))
205 205  )))
206 206  
... ... @@ -208,19 +208,19 @@
208 208  
209 209  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 -(% border="1" style="background-color:#ffffcc; color:green; width:795px" %)
212 -|(((
228 +(% border="1" style="background-color:#ffffcc; color:green; width:782px" %)
229 +|(% style="width:128px" %)(((
213 213  **AT Commands**
214 -)))|(% style="width:285px" %)(((
231 +)))|(% style="width:305px" %)(((
215 215  **Description**
216 -)))|(% style="width:347px" %)(((
233 +)))|(% style="width:346px" %)(((
217 217  **Example**
218 218  )))
219 -|(((
236 +|(% style="width:128px" %)(((
220 220  AT+BAUDR
221 -)))|(% style="width:285px" %)(((
238 +)))|(% style="width:305px" %)(((
222 222  Set the baud rate (for RS485 connection). Default Value is: 9600.
223 -)))|(% style="width:347px" %)(((
240 +)))|(% style="width:346px" %)(((
224 224  (((
225 225  AT+BAUDR=9600
226 226  )))
... ... @@ -229,11 +229,11 @@
229 229  Options: (1200,2400,4800,14400,19200,115200)
230 230  )))
231 231  )))
232 -|(((
249 +|(% style="width:128px" %)(((
233 233  AT+PARITY
234 -)))|(% style="width:285px" %)(((
251 +)))|(% style="width:305px" %)(((
235 235  Set UART parity (for RS485 connection)
236 -)))|(% style="width:347px" %)(((
253 +)))|(% style="width:346px" %)(((
237 237  (((
238 238  AT+PARITY=0
239 239  )))
... ... @@ -242,9 +242,9 @@
242 242  Option: 0: no parity, 1: odd parity, 2: even parity
243 243  )))
244 244  )))
245 -|(((
262 +|(% style="width:128px" %)(((
246 246  AT+STOPBIT
247 -)))|(% style="width:285px" %)(((
264 +)))|(% style="width:305px" %)(((
248 248  (((
249 249  Set serial stopbit (for RS485 connection)
250 250  )))
... ... @@ -252,7 +252,7 @@
252 252  (((
253 253  
254 254  )))
255 -)))|(% style="width:347px" %)(((
272 +)))|(% style="width:346px" %)(((
256 256  (((
257 257  AT+STOPBIT=0 for 1bit
258 258  )))
... ... @@ -287,77 +287,34 @@
287 287  === 3.3.3 Configure read commands for each sampling ===
288 288  
289 289  (((
290 -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.
291 -)))
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.
292 292  
293 -(((
294 -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.
295 -)))
296 -
297 -(((
298 298  To save the LoRaWAN network bandwidth, we might need to read data from different sensors and combine their valid value into a short payload.
299 -)))
300 300  
301 -(((
302 302  This section describes how to achieve above goals.
303 -)))
304 304  
305 -(((
306 -During each sampling, the RS485-BL can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
307 -)))
313 +During each sampling, the RS485-LN can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
308 308  
309 -(((
310 -**Command from RS485-BL to Sensor:**
311 -)))
312 312  
313 -(((
314 -RS485-BL can send out pre-set max 15 strings via **AT+COMMAD1**, **ATCOMMAND2**,…, to **AT+COMMANDF** . All commands are of same grammar.
315 -)))
316 +**Each RS485 commands include two parts:**
316 316  
317 -(((
318 -**Handle return from sensors to RS485-BL**:
319 -)))
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.
320 320  
321 -(((
322 -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**
323 -)))
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.
324 324  
325 -* (((
326 -**AT+DATACUT**
327 -)))
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
328 328  
329 -(((
330 -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.
331 -)))
332 332  
333 -* (((
334 -**AT+SEARCH**
335 -)))
336 -
337 -(((
338 -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.
339 -)))
340 -
341 -(((
342 -**Define wait timeout:**
343 -)))
344 -
345 -(((
346 -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
347 -)))
348 -
349 -(((
350 350  After we got the valid value from each RS485 commands, we need to combine them together with the command **AT+DATAUP**.
351 -)))
352 352  
353 -**Examples:**
354 354  
355 355  Below are examples for the how above AT Commands works.
356 356  
357 -**AT+COMMANDx : **This command will be sent to RS485/TTL devices during each sampling, Max command length is 14 bytes. The grammar is:
358 358  
359 -(% border="1" class="table-bordered" %)
360 -|(((
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" %)(((
361 361  **AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
362 362  
363 363  **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
... ... @@ -365,49 +365,15 @@
365 365  **m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command**
366 366  )))
367 367  
368 -(((
369 369  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 -)))
371 371  
372 -(((
373 -In the RS485-BL, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
374 -)))
344 +In the RS485-LN, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
375 375  
376 -(((
377 -**AT+SEARCHx**: This command defines how to handle the return from AT+COMMANDx.
378 -)))
379 379  
380 -(% border="1" class="table-bordered" %)
381 -|(((
382 -**AT+SEARCHx=aa,xx xx xx xx xx**
383 -
384 -* **aa: 1: prefix match mode; 2: prefix and suffix match mode**
385 -* **xx xx xx xx xx: match string. Max 5 bytes for prefix and 5 bytes for suffix**
386 -
387 -
388 -)))
389 -
390 -**Examples:**
391 -
392 -~1. For a return string from AT+COMMAND1: 16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
393 -
394 -If we set AT+SEARCH1=1,1E 56 34.      (max 5 bytes for prefix)
395 -
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**
397 -
398 -[[image:1653269403619-508.png]]
399 -
400 -2. For a return string from AT+COMMAND1:  16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
401 -
402 -If we set AT+SEARCH1=2, 1E 56 34+31 00 49
403 -
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**
405 -
406 -[[image:1653269438444-278.png]]
407 -
408 408  **AT+DATACUTx : **This command defines how to handle the return from AT+COMMANDx, max return length is 45 bytes.
409 409  
410 -|(((
349 +(% border="1" style="background-color:#4bacc6; color:white; width:725px" %)
350 +|(% style="width:722px" %)(((
411 411  **AT+DATACUTx=a,b,c**
412 412  
413 413  * **a: length for the return of AT+COMMAND**
... ... @@ -415,48 +415,37 @@
415 415  * **c: define the position for valid value.  **
416 416  )))
417 417  
418 -Examples:
358 +**Examples:**
419 419  
420 420  * Grab bytes:
421 421  
422 -[[image:1653269551753-223.png||height="311" width="717"]]
362 +[[image:image-20220602153621-1.png]]
423 423  
364 +
424 424  * Grab a section.
425 425  
426 -[[image:1653269568276-930.png||height="325" width="718"]]
367 +[[image:image-20220602153621-2.png]]
427 427  
369 +
428 428  * Grab different sections.
429 429  
430 -[[image:1653269593172-426.png||height="303" width="725"]]
372 +[[image:image-20220602153621-3.png]]
431 431  
432 -(% style="color:red" %)**Note:**
374 +
375 +)))
433 433  
434 -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.
435 -
436 -Example:
437 -
438 -(% style="color:red" %)AT+COMMAND1=11 01 1E D0,0
439 -
440 -(% style="color:red" %)AT+SEARCH1=1,1E 56 34
441 -
442 -(% style="color:red" %)AT+DATACUT1=0,2,1~~5
443 -
444 -(% style="color:red" %)Return string from AT+COMMAND1: 16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
445 -
446 -(% style="color:red" %)String after SEARCH command: 2e 30 58 5f 36 41 30 31 00 49
447 -
448 -(% style="color:red" %)Valid payload after DataCUT command: 2e 30 58 5f 36
449 -
450 -[[image:1653269618463-608.png]]
451 -
452 452  === 3.3.4 Compose the uplink payload ===
453 453  
454 454  (((
455 455  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 +
456 456  )))
457 457  
458 458  (((
459 -(% style="color:#4f81bd" %)**Examples: AT+DATAUP=0**
386 +(% style="color:#037691" %)**Examples: AT+DATAUP=0**
387 +
388 +
460 460  )))
461 461  
462 462  (((
... ... @@ -477,8 +477,10 @@
477 477  
478 478  [[image:1653269759169-150.png||height="513" width="716"]]
479 479  
480 -(% style="color:#4f81bd" %)**Examples: AT+DATAUP=1**
481 481  
410 +(% style="color:#037691" %)**Examples: AT+DATAUP=1**
411 +
412 +
482 482  Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
483 483  
484 484  Final Payload is
... ... @@ -485,173 +485,122 @@
485 485  
486 486  (% style="color:#4f81bd" %)**Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
487 487  
488 -1. Battery Info (2 bytes): Battery voltage
489 -1. PAYVER (1 byte): Defined by AT+PAYVER
490 -1. PAYLOAD COUNT (1 byte): Total how many uplinks of this sampling.
491 -1. PAYLOAD# (1 byte): Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
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
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
493 493  
494 -[[image:1653269916228-732.png||height="433" width="711"]]
424 +[[image:image-20220602155039-4.png]]
495 495  
496 496  
497 -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
498 498  
499 -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**
500 500  
501 -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**
502 502  
503 -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**
504 504  
505 -Below are the uplink payloads:
506 506  
507 -[[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:
508 508  
438 + ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink.
509 509  
510 -(% 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.
511 511  
512 - ~* 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.
513 513  
514 - * 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.
515 515  
516 - * For US915 band, max 11 bytes for each uplink ( so 11 -5 = 6 max valid date).
517 517  
518 - ~* For all other bands: max 51 bytes for each uplink  ( so 51 -5 = 46 max valid date).
447 +Below are the uplink payloads:
519 519  
449 +[[image:1654157178836-407.png]]
520 520  
521 521  
522 -1.
523 -11.
524 -111. Uplink on demand
452 +=== 3.3.5 Uplink on demand ===
525 525  
526 -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.
527 527  
528 528  Downlink control command:
529 529  
530 -[[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.
531 531  
532 -[[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.
533 533  
534 534  
535 535  
536 -1.
537 -11.
538 -111. Uplink on Interrupt
464 +=== 3.3.6 Uplink on Interrupt ===
539 539  
540 -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.
541 541  
542 -AT+INTMOD=0  Disable Interrupt
468 +[[image:1654157342174-798.png]]
543 543  
544 -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.
545 545  
546 -AT+INTMOD=2  Interrupt trigger by falling edge. ( Default Value)
547 547  
548 -AT+INTMOD=3  Interrupt trigger by rising edge.
473 +== 3.4 Uplink Payload ==
549 549  
550 -
551 -1.
552 -11. Uplink Payload
553 -
554 -|**Size(bytes)**|**2**|**1**|**Length depends on the return from the commands**
555 -|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" %)(((
556 556  Battery(mV)
557 557  
558 558  &
559 559  
560 560  Interrupt _Flag
561 -)))|(((
483 +)))|(% style="width:116px" %)(((
562 562  PAYLOAD_VER
563 563  
564 564  
565 -)))|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.
566 566  
567 567  Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
568 568  
569 569  
570 -function Decoder(bytes, port) {
492 +== 3.5 Configure RS485-BL via AT or Downlink ==
571 571  
572 -~/~/Payload Formats of RS485-BL Deceive
494 +User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
573 573  
574 -return {
575 -
576 - ~/~/Battery,units:V
577 -
578 - BatV:((bytes[0]<<8 | bytes[1])&0x7fff)/1000,
579 -
580 - ~/~/GPIO_EXTI 
581 -
582 - EXTI_Trigger:(bytes[0] & 0x80)? "TRUE":"FALSE",
583 -
584 - ~/~/payload of version
585 -
586 - Pay_ver:bytes[2],
587 -
588 - };
589 -
590 - }
591 -
592 -
593 -
594 -
595 -
596 -
597 -
598 -TTN V3 uplink screen shot.
599 -
600 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image023.png]]
601 -
602 -1.
603 -11. Configure RS485-BL via AT or Downlink
604 -
605 -User can configure RS485-BL via [[AT Commands >>path:#_​Using_the_AT]]or LoRaWAN Downlink Commands
606 -
607 607  There are two kinds of Commands:
608 608  
609 -* **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]]
610 610  
611 -* **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:
612 612  
613 -1.
614 -11.
615 -111. Common Commands:
502 +=== 3.5.1 Common Commands ===
616 616  
617 -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]]
504 +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]]
618 618  
619 619  
620 -1.
621 -11.
622 -111. Sensor related commands:
507 +=== 3.5.2 Sensor related commands ===
623 623  
624 -==== Choose Device Type (RS485 or TTL) ====
509 +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.
625 625  
626 -RS485-BL can connect to either RS485 sensors or TTL sensor. User need to specify what type of sensor need to connect.
511 +[[image:image-20220602163333-5.png||height="263" width="1160"]]
627 627  
628 -* AT Command
513 +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)
629 629  
630 -**AT+MOD=1** ~/~/ Set to support RS485-MODBUS type sensors. User can connect multiply RS485 , Modbus sensors to the A / B pins.
631 631  
632 -**AT+MOD=2** ~/~/ Set to support TTL Level sensors, User can connect one TTL Sensor to the TXD/RXD/GND pins.
516 +=== 3.5.3 Sensor related commands ===
633 633  
518 +==== ====
634 634  
635 -* Downlink Payload
520 +==== **RS485 Debug Command** ====
636 636  
637 -**0A aa**     à same as AT+MOD=aa
522 +This command is used to configure the RS485 devices; they won’t be used during sampling.
638 638  
524 +* **AT Command**
639 639  
526 +(% class="box infomessage" %)
527 +(((
528 +**AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m**
529 +)))
640 640  
641 -==== [[RS485 Debug Command>>path:#downlink_A8]] (AT+CFGDEV) ====
531 +m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
642 642  
643 -This command is used to configure the RS485 or TTL sensors; they won’t be used during sampling.
533 +* **Downlink Payload**
644 644  
645 -* AT Command
646 -
647 -AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
648 -
649 -m: 0: no CRC; 1: add CRC-16/MODBUS in the end of this command.
650 -
651 -
652 -
653 -* Downlink Payload
654 -
655 655  Format: A8 MM NN XX XX XX XX YY
656 656  
657 657  Where:
... ... @@ -659,9 +659,12 @@
659 659  * MM: 1: add CRC-16/MODBUS ; 0: no CRC
660 660  * NN: The length of RS485 command
661 661  * XX XX XX XX: RS485 command total NN bytes
662 -* 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
542 +* YY: How many bytes will be uplink from the return of this RS485 command,
543 +** if YY=0, RS485-LN will execute the downlink command without uplink;
544 +** if YY>0, RS485-LN will uplink total YY bytes from the output of this RS485 command; Fport=200
545 +** if YY=FF, RS485-LN will uplink RS485 output with the downlink command content; Fport=200.
663 663  
664 -**Example 1:**
547 +**Example 1** ~-~-> Configure without ask for uplink (YY=0)
665 665  
666 666  To connect a Modbus Alarm with below commands.
667 667  
... ... @@ -671,228 +671,236 @@
671 671  
672 672  So if user want to use downlink command to control to RS485 Alarm, he can use:
673 673  
674 -**A8 01 06 0A 05 00 04 00 01 00**: to activate the RS485 Alarm
557 +(% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 01 00**(%%): to activate the RS485 Alarm
675 675  
676 -**A8 01 06 0A 05 00 04 00 00 00**: to deactivate the RS485 Alarm
559 +(% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
677 677  
678 678  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.
679 679  
680 680  
681 -**Example 2:**
564 +**Example 2** ~-~-> Configure with requesting uplink and original downlink command (**YY=FF**)
682 682  
683 -Check TTL Sensor return:
566 +User in IoT server send a downlink command: (% style="color:#4f81bd" %)**A8 01 06 0A 08 00 04 00 01 YY**
684 684  
685 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image024.png]]
686 686  
569 +RS485-LN got this downlink command and send (% style="color:#4f81bd" %)**0A 08 00 04 00 01 **(%%)to Modbus network. One of the RS485 sensor in the network send back Modbus reply **0A 08 00 04 00 00**. RS485-LN get this reply and combine with the original downlink command and uplink. The uplink message is:
687 687  
571 + **A8** (% style="color:#4f81bd" %)**0A 08 00 04 00  **(% style="color:red" %)**01 06** ** **(% style="color:green" %)**0A 08 00 04 00 00**
688 688  
573 + [[image:1654159460680-153.png]]
689 689  
690 -==== Set Payload version ====
691 691  
692 -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.
693 693  
694 -* AT Command:
577 +==== **Set Payload version** ====
695 695  
696 -AT+PAYVER: Set PAYVER field = 1
579 +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.
697 697  
581 +* **AT Command:**
698 698  
699 -* Downlink Payload:
583 +(% class="box infomessage" %)
584 +(((
585 +**AT+PAYVER: Set PAYVER field = 1**
586 +)))
700 700  
701 -0xAE 01   à Set PAYVER field =  0x01
588 +* **Downlink Payload:**
702 702  
703 -0xAE 0F   à Set PAYVER field =  0x0F
590 +**0xAE 01**  ~-~-> Set PAYVER field =  0x01
704 704  
592 +**0xAE 0F**   ~-~-> Set PAYVER field =  0x0F
705 705  
706 -==== Set RS485 Sampling Commands ====
707 707  
708 -AT+COMMANDx, AT+DATACUTx and AT+SEARCHx
709 709  
710 -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]].
596 +==== **Set RS485 Sampling Commands** ====
711 711  
598 +AT+COMMANDx or AT+DATACUTx
712 712  
713 -* AT Command:
600 +These three commands are used to configure how the RS485-LN polling data from Modbus device. Detail of usage please see : [[polling RS485 device>>||anchor="H3.3.3Configurereadcommandsforeachsampling"]].
714 714  
715 -AT+COMMANDx: Configure RS485 read command to sensor.
716 716  
717 -AT+DATACUTx: Configure how to handle return from RS485 devices.
603 +* **AT Command:**
718 718  
719 -AT+SEARCHx: Configure search command
605 +(% class="box infomessage" %)
606 +(((
607 +**AT+COMMANDx: Configure RS485 read command to sensor.**
608 +)))
720 720  
610 +(% class="box infomessage" %)
611 +(((
612 +**AT+DATACUTx: Configure how to handle return from RS485 devices.**
613 +)))
721 721  
722 -* Downlink Payload:
723 723  
724 -0xAF downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
616 +* **Downlink Payload:**
725 725  
726 -Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
618 +**0xAF** downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
727 727  
620 +(% style="color:red" %)**Note**(%%): if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
621 +
728 728  Format: AF MM NN LL XX XX XX XX YY
729 729  
730 730  Where:
731 731  
732 732  * MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
733 -* NN: 0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
734 -* LL: The length of AT+COMMAND or AT+DATACUT command
627 +* NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
628 +* LL:  The length of AT+COMMAND or AT+DATACUT command
735 735  * XX XX XX XX: AT+COMMAND or AT+DATACUT command
736 -* 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.
630 +* YY:  If YY=0, RS485-BL will execute the downlink command without uplink; if YY=1, RS485-LN will execute an uplink after got this command.
737 737  
738 -Example:
632 +**Example:**
739 739  
740 -**AF 03 01 06 0A 05 00 04 00 01 00**: Same as AT+COMMAND3=0A 05 00 04 00 01,1
634 +(% style="color:#037691" %)**AF 03 01 06 0A 05 00 04 00 01 00**(%%): Same as AT+COMMAND3=0A 05 00 04 00 01,1
741 741  
742 -**AF 03 02 06 10 01 05 06 09 0A 00**: Same as AT+DATACUT3=**16**,**1**,**5+6+9+10**
636 +(% style="color:#037691" %)**AF 03 02 06**(% style="color:orange" %)** 10 **(% style="color:red" %)**01 **(% style="color:green" %)**05 06 09 0A**(% style="color:#037691" %)** 00**(%%): Same as AT+DATACUT3=(% style="color:orange" %)**16**(%%),(% style="color:red" %)**1**(%%),(% style="color:green" %)**5+6+9+10**
743 743  
744 -**AF 03 02 06 0B 02 05 07 08 0A 00**: Same as AT+DATACUT3=**11**,**2**,**5~~7+8~~10**
638 +(% style="color:#037691" %)**AF 03 02 06 **(% style="color:orange" %)**0B**(% style="color:red" %)** 02 **(% style="color:green" %)**05 07 08 0A **(% style="color:#037691" %)**00**(%%): Same as AT+DATACUT3=(% style="color:orange" %)**11**(%%),(% style="color:red" %)**2**(%%),(% style="color:green" %)**5~~7+8~~10**
745 745  
746 746  
747 -0xAB downlink command can be used for set AT+SEARCHx
748 748  
749 -Example: **AB aa 01 03 xx xx xx** (03 here means there are total 3 bytes after 03) So
642 +==== **Fast command to handle MODBUS device** ====
750 750  
751 -* AB aa 01 03 xx xx xx  same as AT+SEARCHaa=1,xx xx xx
752 -* 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
753 -
754 -**AB aa 02 03 xx xx xx 02 yy yy**  same as **AT+SEARCHaa=2,xx xx xx+yy yy**
755 -
756 -
757 -==== Fast command to handle MODBUS device ====
758 -
759 759  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]].
760 760  
761 761  This command is valid since v1.3 firmware version
762 762  
648 +AT+MBFUN 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.
763 763  
764 -AT+MBFUN has only two value:
765 765  
766 -* AT+MBFUN=1: Enable Modbus reading. And get response base on the MODBUS return
651 +**Example:**
767 767  
768 -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.
769 -
770 -* AT+MBFUN=0: Disable Modbus fast reading.
771 -
772 -Example:
773 -
774 -* AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2 are not configure (0,0,0).
653 +* AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2 are not configure (0,0,0). So RS485-LN.
775 775  * 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.
776 776  * 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.
777 777  
778 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image025.png]]
657 +[[image:image-20220602165351-6.png]]
779 779  
659 +[[image:image-20220602165351-7.png]]
780 780  
781 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image026.png]]
782 782  
783 783  
784 -* Downlink Commands:
663 +==== **RS485 command timeout** ====
785 785  
786 -A9 aa -à Same as AT+MBFUN=aa
787 -
788 -
789 -==== RS485 command timeout ====
790 -
791 791  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.
792 792  
793 793  Default value: 0, range:  0 ~~ 5 seconds
794 794  
795 795  
796 -* AT Command:
670 +* **AT Command:**
797 797  
798 -AT+CMDDLaa=hex(bb cc)
672 +(% class="box infomessage" %)
673 +(((
674 +**AT+CMDDLaa=hex(bb cc)**
675 +)))
799 799  
800 -Example:
677 +**Example:**
801 801  
802 802  **AT+CMDDL1=1000** to send the open time to 1000ms
803 803  
804 804  
805 -* Downlink Payload:
682 +* **Downlink Payload:**
806 806  
807 807  0x AA aa bb cc
808 808  
809 809  Same as: AT+CMDDLaa=hex(bb cc)
810 810  
811 - Example:
688 + **Example:**
812 812  
813 - 0xAA 01 03 E8  à Same as **AT+CMDDL1=1000 ms**
690 + **0xAA 01 03 E8**  ~-~-> Same as **AT+CMDDL1=1000 ms**
814 814  
815 815  
816 -==== [[Uplink>>path:#downlink_A8]] payload mode ====
817 817  
694 +==== **Uplink payload mode** ====
695 +
818 818  Define to use one uplink or multiple uplinks for the sampling.
819 819  
820 -The use of this command please see: [[Compose Uplink payload>>path:#DataUP]]
698 +The use of this command please see: [[Compose Uplink payload>>||anchor="H3.3.4Composetheuplinkpayload"]]
821 821  
822 -* AT Command:
700 +* **AT Command:**
823 823  
824 -AT+DATAUP=0
702 +(% class="box infomessage" %)
703 +(((
704 +**AT+DATAUP=0**
705 +)))
825 825  
826 -AT+DATAUP=1
707 +(% class="box infomessage" %)
708 +(((
709 +**AT+DATAUP=1**
710 +)))
827 827  
828 828  
829 -* Downlink Payload:
713 +* **Downlink Payload:**
830 830  
831 -0xAD 00   à Same as AT+DATAUP=0
715 +**0xAD 00**  **~-~->** Same as AT+DATAUP=0
832 832  
833 -0xAD 01   à Same as AT+DATAUP=1
717 +**0xAD 01**  **~-~->** Same as AT+DATAUP=1
834 834  
835 835  
836 -==== Manually trigger an Uplink ====
837 837  
721 +==== **Manually trigger an Uplink** ====
722 +
838 838  Ask device to send an uplink immediately.
839 839  
840 -* Downlink Payload:
725 +* **Downlink Payload:**
841 841  
842 -0x08 FF, RS485-BL will immediately send an uplink.
727 +**0x08 FF**, RS485-BL will immediately send an uplink.
843 843  
844 844  
845 -==== Clear RS485 Command ====
846 846  
731 +==== **Clear RS485 Command** ====
732 +
847 847  The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
848 848  
849 849  
850 -* AT Command:
736 +* **AT Command:**
851 851  
852 -**AT+CMDEAR=mm,nn**   mm: start position of erase ,nn: stop position of erase
738 +(% style="color:#037691" %)**AT+CMDEAR=mm,nn** (%%) mm: start position of erase ,nn: stop position of erase Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
853 853  
854 -Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
855 -
856 856  Example screen shot after clear all RS485 commands. 
857 857  
858 858  
859 -
860 860  The uplink screen shot is:
861 861  
862 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image023.png]]
745 +[[image:1654134704555-320.png]]
863 863  
864 864  
865 -* Downlink Payload:
748 +* **Downlink Payload:**
866 866  
867 -0x09 aa bb same as AT+CMDEAR=aa,bb
750 +**0x09 aa bb** same as AT+CMDEAR=aa,bb
868 868  
869 869  
870 -==== Set Serial Communication Parameters ====
871 871  
754 +==== **Set Serial Communication Parameters** ====
755 +
872 872  Set the Rs485 serial communication parameters:
873 873  
874 -* AT Command:
758 +* **AT Command:**
875 875  
876 876  Set Baud Rate:
877 877  
878 -AT+BAUDR=9600    ~/~/ Options: (1200,2400,4800,14400,19200,115200)
762 +(% class="box infomessage" %)
763 +(((
764 +**AT+BAUDR=9600**    ~/~/ Options: (1200,2400,4800,14400,19200,115200)
765 +)))
879 879  
767 +Set UART Parity
880 880  
881 -Set UART parity
769 +(% class="box infomessage" %)
770 +(((
771 +**AT+PARITY=0**    ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity
772 +)))
882 882  
883 -AT+PARITY=0    ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity
884 -
885 -
886 886  Set STOPBIT
887 887  
888 -AT+STOPBIT=0    ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
776 +(% class="box infomessage" %)
777 +(((
778 +**AT+STOPBIT=0**    ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
779 +)))
889 889  
890 890  
891 -* Downlink Payload:
782 +* **Downlink Payload:**
892 892  
893 -A7 01 aa bb: Same  AT+BAUDR=hex(aa bb)*100
784 +**A7 01 aa bb**: Same  AT+BAUDR=hex(aa bb)*100
894 894  
895 -Example:
786 +**Example:**
896 896  
897 897  * A7 01 00 60   same as AT+BAUDR=9600
898 898  * A7 01 04 80  same as AT+BAUDR=115200
... ... @@ -902,287 +902,22 @@
902 902  A7 03 aa: Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
903 903  
904 904  
905 -==== Control output power duration ====
906 906  
797 +==== **Control output power duration** ====
798 +
907 907  User can set the output power duration before each sampling.
908 908  
909 -* AT Command:
801 +* **AT Command:**
910 910  
911 -Example:
803 +**Example:**
912 912  
913 -AT+3V3T=1000 ~/~/ 3V3 output power will open 1s before each sampling.
805 +**AT+3V3T=1000**  ~/~/ 3V3 output power will open 1s before each sampling.
914 914  
915 -AT+5VT=1000 ~/~/ +5V output power will open 1s before each sampling.
807 +**AT+5VT=1000**  ~/~/ +5V output power will open 1s before each sampling.
916 916  
917 917  
918 -* LoRaWAN Downlink Command:
810 +* **LoRaWAN Downlink Command:**
919 919  
920 -07 01 aa bb  Same as AT+5VT=(aa bb)
812 +**07 01 aa bb**  Same as AT+5VT=(aa bb)
921 921  
922 -07 02 aa bb  Same as AT+3V3T=(aa bb)
923 -
924 -
925 -
926 -
927 -1.
928 -11. Buttons
929 -
930 -|**Button**|**Feature**
931 -|**RST**|Reboot RS485-BL
932 -
933 -1.
934 -11. +3V3 Output
935 -
936 -RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor.
937 -
938 -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. 
939 -
940 -
941 -The +3V3 output time can be controlled by AT Command.
942 -
943 -**AT+3V3T=1000**
944 -
945 -Means set +3v3 valid time to have 1000ms. So, the real +3v3 output will actually have 1000ms + sampling time for other sensors.
946 -
947 -
948 -By default, the AT+3V3T=0. This is a special case, means the +3V3 output is always on at any time
949 -
950 -
951 -1.
952 -11. +5V Output
953 -
954 -RS485-BL has a Controllable +5V output, user can use this output to power external sensor.
955 -
956 -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. 
957 -
958 -
959 -The 5V output time can be controlled by AT Command.
960 -
961 -**AT+5VT=1000**
962 -
963 -Means set 5V valid time to have 1000ms. So, the real 5V output will actually have 1000ms + sampling time for other sensors.
964 -
965 -
966 -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.
967 -
968 -
969 -
970 -
971 -1.
972 -11. LEDs
973 -
974 -|**LEDs**|**Feature**
975 -|**LED1**|Blink when device transmit a packet.
976 -
977 -1.
978 -11. Switch Jumper
979 -
980 -|**Switch Jumper**|**Feature**
981 -|**SW1**|(((
982 -ISP position: Upgrade firmware via UART
983 -
984 -Flash position: Configure device, check running status.
985 -)))
986 -|**SW2**|(((
987 -5V position: set to compatible with 5v I/O.
988 -
989 -3.3v position: set to compatible with 3.3v I/O.,
990 -)))
991 -
992 -+3.3V: is always ON
993 -
994 -+5V: Only open before every sampling. The time is by default, it is AT+5VT=0.  Max open time. 5000 ms.
995 -
996 -1. Case Study
997 -
998 -User can check this URL for some case studies.
999 -
1000 -[[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]]
1001 -
1002 -
1003 -
1004 -
1005 -1. Use AT Command
1006 -11. Access AT Command
1007 -
1008 -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.
1009 -
1010 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image027.png]]
1011 -
1012 -
1013 -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:
1014 -
1015 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image028.png]]
1016 -
1017 -
1018 -
1019 -More detail AT Command manual can be found at [[AT Command Manual>>path:#AT_COMMAND]]
1020 -
1021 -
1022 -
1023 -1.
1024 -11. Common AT Command Sequence
1025 -111. Multi-channel ABP mode (Use with SX1301/LG308)
1026 -
1027 -If device has not joined network yet:
1028 -
1029 -AT+FDR
1030 -
1031 -AT+NJM=0
1032 -
1033 -ATZ
1034 -
1035 -
1036 -If device already joined network:
1037 -
1038 -AT+NJM=0
1039 -
1040 -ATZ
1041 -
1042 -1.
1043 -11.
1044 -111. Single-channel ABP mode (Use with LG01/LG02)
1045 -
1046 -AT+FDR   Reset Parameters to Factory Default, Keys Reserve
1047 -
1048 -AT+NJM=0 Set to ABP mode
1049 -
1050 -AT+ADR=0 Set the Adaptive Data Rate Off
1051 -
1052 -AT+DR=5  Set Data Rate
1053 -
1054 -AT+TDC=60000  Set transmit interval to 60 seconds
1055 -
1056 -AT+CHS=868400000 Set transmit frequency to 868.4Mhz
1057 -
1058 -AT+RX2FQ=868400000 Set RX2Frequency to 868.4Mhz (according to the result from server)
1059 -
1060 -AT+RX2DR=5  Set RX2DR to match the downlink DR from server. see below
1061 -
1062 -AT+DADDR=26 01 1A F1 Set Device Address to 26 01 1A F1, this ID can be found in the LoRa Server portal.
1063 -
1064 -ATZ          Reset MCU
1065 -
1066 -**Note:**
1067 -
1068 -1. Make sure the device is set to ABP mode in the IoT Server.
1069 -1. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1070 -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.
1071 -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
1072 -
1073 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image029.png]]
1074 -
1075 -
1076 -1. FAQ
1077 -11. How to upgrade the image?
1078 -
1079 -The RS485-BL LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-BL to:
1080 -
1081 -* Support new features
1082 -* For bug fix
1083 -* Change LoRaWAN bands.
1084 -
1085 -Below shows the hardware connection for how to upload an image to RS485-BL:
1086 -
1087 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image030.png]]
1088 -
1089 -**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]].
1090 -
1091 -**Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
1092 -
1093 -**Step3: **Open flashloader; choose the correct COM port to update.
1094 -
1095 -
1096 -|(((
1097 -HOLD PRO then press the RST button, SYS will be ON, then click next
1098 -)))
1099 -
1100 -|(((
1101 -Board detected
1102 -)))
1103 -
1104 -|(((
1105 -
1106 -)))
1107 -
1108 -[[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]]
1109 -
1110 -
1111 -
1112 -[[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]]
1113 -
1114 -
1115 -[[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]]
1116 -
1117 -
1118 -1.
1119 -11. How to change the LoRa Frequency Bands/Region?
1120 -
1121 -User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download.
1122 -
1123 -
1124 -
1125 -1.
1126 -11. How many RS485-Slave can RS485-BL connects?
1127 -
1128 -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]].
1129 -
1130 -
1131 -
1132 -
1133 -1. Trouble Shooting     
1134 -11. Downlink doesn’t work, how to solve it?
1135 -
1136 -Please see this link for debug:
1137 -
1138 -[[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]] 
1139 -
1140 -
1141 -
1142 -1.
1143 -11. Why I can’t join TTN V3 in US915 /AU915 bands?
1144 -
1145 -It might about the channels mapping. Please see for detail.
1146 -
1147 -[[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]]
1148 -
1149 -
1150 -
1151 -1. Order Info
1152 -
1153 -**Part Number: RS485-BL-XXX**
1154 -
1155 -**XXX:**
1156 -
1157 -* **EU433**: frequency bands EU433
1158 -* **EU868**: frequency bands EU868
1159 -* **KR920**: frequency bands KR920
1160 -* **CN470**: frequency bands CN470
1161 -* **AS923**: frequency bands AS923
1162 -* **AU915**: frequency bands AU915
1163 -* **US915**: frequency bands US915
1164 -* **IN865**: frequency bands IN865
1165 -* **RU864**: frequency bands RU864
1166 -* **KZ865: **frequency bands KZ865
1167 -
1168 -1. Packing Info
1169 -
1170 -**Package Includes**:
1171 -
1172 -* RS485-BL x 1
1173 -* Stick Antenna for LoRa RF part x 1
1174 -* Program cable x 1
1175 -
1176 -**Dimension and weight**:
1177 -
1178 -* Device Size: 13.5 x 7 x 3 cm
1179 -* Device Weight: 105g
1180 -* Package Size / pcs : 14.5 x 8 x 5 cm
1181 -* Weight / pcs : 170g
1182 -
1183 -1. Support
1184 -
1185 -* 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.
1186 -* 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
1187 -
1188 -[[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]]
814 +**07 02 aa bb**  Same as AT+3V3T=(aa bb)
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