Last modified by Xiaoling on 2025/04/23 15:56
<
From version < 22.6 >
edited by Xiaoling
on 2022/05/23 09:17
To version < 41.1 >
edited by Xiaoling
on 2022/06/02 16:35
>
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  )))
... ... @@ -269,12 +269,10 @@
269 269  === 3.3.2 Configure sensors ===
270 270  
271 271  (((
272 -Some sensors might need to configure before normal operation. User can configure such sensor via PC or through RS485-BL AT Commands (% style="color:#4f81bd" %)**AT+CFGDEV**.
273 -)))
274 -
275 275  (((
276 -When user issue an (% style="color:#4f81bd" %)**AT+CFGDEV**(%%) command, Each (% style="color:#4f81bd" %)**AT+CFGDEV**(%%) equals to send a command to the RS485 or TTL sensors. This command will only run when user input it and won’t run during each sampling.
290 +Some sensors might need to configure before normal operation. User can configure such sensor via PC and RS485 adapter or through RS485-LN AT Commands (% style="color:#4f81bd" %)**AT+CFGDEV**(%%). Each (% style="color:#4f81bd" %)**AT+CFGDEV **(%%)equals to send a RS485 command to sensors. This command will only run when user input it and won’t run during each sampling.
277 277  )))
292 +)))
278 278  
279 279  (% border="1" style="background-color:#ffffcc; color:green; width:806px" %)
280 280  |**AT Commands**|(% style="width:418px" %)**Description**|(% style="width:256px" %)**Example**
... ... @@ -286,82 +286,37 @@
286 286  mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
287 287  )))|(% style="width:256px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
288 288  
289 -Detail of AT+CFGDEV command see [[AT+CFGDEV detail>>path:#AT_CFGDEV]].
290 -
291 291  === 3.3.3 Configure read commands for each sampling ===
292 292  
293 293  (((
294 -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.
295 -)))
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.
296 296  
297 -(((
298 -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.
299 -)))
300 -
301 -(((
302 302  To save the LoRaWAN network bandwidth, we might need to read data from different sensors and combine their valid value into a short payload.
303 -)))
304 304  
305 -(((
306 306  This section describes how to achieve above goals.
307 -)))
308 308  
309 -(((
310 -During each sampling, the RS485-BL can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
311 -)))
313 +During each sampling, the RS485-LN can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
312 312  
313 -(((
314 -**Command from RS485-BL to Sensor:**
315 -)))
316 316  
317 -(((
318 -RS485-BL can send out pre-set max 15 strings via **AT+COMMAD1**, **ATCOMMAND2**,…, to **AT+COMMANDF** . All commands are of same grammar.
319 -)))
316 +**Each RS485 commands include two parts:**
320 320  
321 -(((
322 -**Handle return from sensors to RS485-BL**:
323 -)))
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.
324 324  
325 -(((
326 -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**
327 -)))
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.
328 328  
329 -* (((
330 -**AT+DATACUT**
331 -)))
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
332 332  
333 -(((
334 -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.
335 -)))
336 336  
337 -* (((
338 -**AT+SEARCH**
339 -)))
340 -
341 -(((
342 -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.
343 -)))
344 -
345 -(((
346 -**Define wait timeout:**
347 -)))
348 -
349 -(((
350 -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 -)))
352 -
353 -(((
354 354  After we got the valid value from each RS485 commands, we need to combine them together with the command **AT+DATAUP**.
355 -)))
356 356  
357 -**Examples:**
358 358  
359 359  Below are examples for the how above AT Commands works.
360 360  
361 -**AT+COMMANDx : **This command will be sent to RS485/TTL devices during each sampling, Max command length is 14 bytes. The grammar is:
362 362  
363 -(% border="1" class="table-bordered" %)
364 -|(((
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" %)(((
365 365  **AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
366 366  
367 367  **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
... ... @@ -371,43 +371,13 @@
371 371  
372 372  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.
373 373  
374 -In the RS485-BL, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
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 -**AT+SEARCHx**: This command defines how to handle the return from AT+COMMANDx.
377 377  
378 -(% border="1" class="table-bordered" %)
379 -|(((
380 -**AT+SEARCHx=aa,xx xx xx xx xx**
381 -
382 -* **aa: 1: prefix match mode; 2: prefix and suffix match mode**
383 -* **xx xx xx xx xx: match string. Max 5 bytes for prefix and 5 bytes for suffix**
384 -
385 -
386 -)))
387 -
388 -Examples:
389 -
390 -1. For a return string from AT+COMMAND1: 16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
391 -
392 -If we set AT+SEARCH1=1,1E 56 34.      (max 5 bytes for prefix)
393 -
394 -The valid data will be all bytes after 1E 56 34 , so it is 2e 30 58 5f 36 41 30 31 00 49
395 -
396 -[[image:1652954654347-831.png]]
397 -
398 -
399 -1. For a return string from AT+COMMAND1:  16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
400 -
401 -If we set AT+SEARCH1=2, 1E 56 34+31 00 49
402 -
403 -Device will search the bytes between 1E 56 34 and 31 00 49. So it is 2e 30 58 5f 36 41 30
404 -
405 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image014.png]]
406 -
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**
... ... @@ -415,773 +415,168 @@
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:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image015.png]]
362 +[[image:image-20220602153621-1.png]]
423 423  
364 +
424 424  * Grab a section.
425 425  
426 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image016.png]]
367 +[[image:image-20220602153621-2.png]]
427 427  
369 +
428 428  * Grab different sections.
429 429  
430 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image017.png]]
372 +[[image:image-20220602153621-3.png]]
431 431  
374 +
375 +)))
432 432  
433 -Note:
377 +=== 3.3.4 Compose the uplink payload ===
434 434  
435 -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.
436 -
437 -Example:
438 -
439 -AT+COMMAND1=11 01 1E D0,0
440 -
441 -AT+SEARCH1=1,1E 56 34
442 -
443 -AT+DATACUT1=0,2,1~~5
444 -
445 -Return string from AT+COMMAND1: 16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
446 -
447 -String after SEARCH command: 2e 30 58 5f 36 41 30 31 00 49
448 -
449 -Valid payload after DataCUT command: 2e 30 58 5f 36
450 -
451 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image018.png]]
452 -
453 -
454 -
455 -
456 -1.
457 -11.
458 -111. Compose the uplink payload
459 -
379 +(((
460 460  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.**
461 461  
382 +
383 +)))
462 462  
463 -**Examples: AT+DATAUP=0**
385 +(((
386 +(% style="color:#037691" %)**Examples: AT+DATAUP=0**
464 464  
465 -Compose the uplink payload with value returns in sequence and send with **A SIGNLE UPLINK**.
388 +
389 +)))
466 466  
391 +(((
392 +Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**A SIGNLE UPLINK**.
393 +)))
394 +
395 +(((
467 467  Final Payload is
397 +)))
468 468  
469 -Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx
399 +(((
400 +(% style="color:#4f81bd" %)**Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx**
401 +)))
470 470  
403 +(((
471 471  Where PAYVER is defined by AT+PAYVER, below is an example screen shot.
405 +)))
472 472  
473 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image019.png]]
407 +[[image:1653269759169-150.png||height="513" width="716"]]
474 474  
475 475  
410 +(% style="color:#037691" %)**Examples: AT+DATAUP=1**
476 476  
477 -**Examples: AT+DATAUP=1**
478 478  
479 -Compose the uplink payload with value returns in sequence and send with **Multiply UPLINKs**.
413 +Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
480 480  
481 481  Final Payload is
482 482  
483 -Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA
417 +(% style="color:#4f81bd" %)**Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
484 484  
485 -1. Battery Info (2 bytes): Battery voltage
486 -1. PAYVER (1 byte): Defined by AT+PAYVER
487 -1. PAYLOAD COUNT (1 byte): Total how many uplinks of this sampling.
488 -1. PAYLOAD# (1 byte): Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
489 -1. DATA: Valid value: max 6 bytes(US915 version here, [[Notice*!>>path:#max_byte]]) for each uplink so each uplink <= 11 bytes. For the last uplink, DATA will might less than 6 bytes
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
490 490  
491 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image020.png]]
424 +[[image:image-20220602155039-4.png]]
492 492  
493 493  
494 -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
495 495  
496 -DATA1=RETURN1 Valid Value = 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**
497 497  
498 -DATA2=1^^st^^ ~~ 6^^th^^ byte of Valid value of RETURN10= 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**
499 499  
500 -DATA3=7^^th^^ ~~ 11^^th^^ bytes of Valid value of RETURN10 = 20 20 20 2d 30
433 +DATA3=the rest of Valid value of RETURN10= **30**
501 501  
502 502  
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:
503 503  
504 -Below are the uplink payloads:
438 + ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink.
505 505  
506 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image021.png]]
440 + * For AU915/AS923 bands, if UplinkDwell time=0, max 11 bytes for each uplink.
507 507  
442 + * For US915 band, max 11 bytes for each uplink.
508 508  
509 -Notice: the Max bytes is according to the max support bytes in different Frequency Bands for lowest SF. As below:
444 + ~* For all other bands: max 51 bytes for each uplink.
510 510  
511 - ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink ( so 51 -5 = 46 max valid date)
512 512  
513 - * For AU915/AS923 bands, if UplinkDwell time=1, max 11 bytes for each uplink ( so 11 -5 = 6 max valid date).
447 +Below are the uplink payloads:
514 514  
515 - * For US915 band, max 11 bytes for each uplink ( so 11 -5 = 6 max valid date).
449 +[[image:1654157178836-407.png]]
516 516  
517 - ~* For all other bands: max 51 bytes for each uplink  ( so 51 -5 = 46 max valid date).
518 518  
452 +=== 3.3.5 Uplink on demand ===
519 519  
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.
520 520  
521 -1.
522 -11.
523 -111. Uplink on demand
524 -
525 -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.
526 -
527 527  Downlink control command:
528 528  
529 -[[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.
530 530  
531 -[[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.
532 532  
533 533  
534 534  
535 -1.
536 -11.
537 -111. Uplink on Interrupt
464 +=== 3.3.6 Uplink on Interrupt ===
538 538  
539 -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.
540 540  
541 -AT+INTMOD=0  Disable Interrupt
468 +[[image:1654157342174-798.png]]
542 542  
543 -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.
544 544  
545 -AT+INTMOD=2  Interrupt trigger by falling edge. ( Default Value)
546 546  
547 -AT+INTMOD=3  Interrupt trigger by rising edge.
473 +== 3.4 Uplink Payload ==
548 548  
549 -
550 -1.
551 -11. Uplink Payload
552 -
553 -|**Size(bytes)**|**2**|**1**|**Length depends on the return from the commands**
554 -|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" %)(((
555 555  Battery(mV)
556 556  
557 557  &
558 558  
559 559  Interrupt _Flag
560 -)))|(((
483 +)))|(% style="width:116px" %)(((
561 561  PAYLOAD_VER
562 562  
563 563  
564 -)))|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.
565 565  
566 566  Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
567 567  
568 568  
569 -function Decoder(bytes, port) {
492 +== 3.5 Configure RS485-BL via AT or Downlink ==
570 570  
571 -~/~/Payload Formats of RS485-BL Deceive
494 +User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
572 572  
573 -return {
574 -
575 - ~/~/Battery,units:V
576 -
577 - BatV:((bytes[0]<<8 | bytes[1])&0x7fff)/1000,
578 -
579 - ~/~/GPIO_EXTI 
580 -
581 - EXTI_Trigger:(bytes[0] & 0x80)? "TRUE":"FALSE",
582 -
583 - ~/~/payload of version
584 -
585 - Pay_ver:bytes[2],
586 -
587 - };
588 -
589 - }
590 -
591 -
592 -
593 -
594 -
595 -
596 -
597 -TTN V3 uplink screen shot.
598 -
599 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image023.png]]
600 -
601 -1.
602 -11. Configure RS485-BL via AT or Downlink
603 -
604 -User can configure RS485-BL via [[AT Commands >>path:#_​Using_the_AT]]or LoRaWAN Downlink Commands
605 -
606 606  There are two kinds of Commands:
607 607  
608 -* **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]]
609 609  
610 -* **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:
611 611  
612 -1.
613 -11.
614 -111. Common Commands:
615 615  
616 -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 ===
617 617  
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]]
618 618  
619 -1.
620 -11.
621 -111. Sensor related commands:
622 622  
623 -==== Choose Device Type (RS485 or TTL) ====
508 +=== 3.5.2 Sensor related commands ===
624 624  
625 -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.
626 626  
627 -* AT Command
512 +[[image:image-20220602163333-5.png||height="263" width="1160"]]
628 628  
629 -**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)
630 630  
631 -**AT+MOD=2** ~/~/ Set to support TTL Level sensors, User can connect one TTL Sensor to the TXD/RXD/GND pins.
632 632  
517 +3.5.3 Sensor related commands
633 633  
634 -* Downlink Payload
519 +(% class="wikigeneratedid" %)
520 +==== ====
635 635  
636 -**0A aa**     à same as AT+MOD=aa
637 -
638 -
639 -
640 -==== [[RS485 Debug Command>>path:#downlink_A8]] (AT+CFGDEV) ====
641 -
642 -This command is used to configure the RS485 or TTL sensors; they won’t be used during sampling.
643 -
644 -* AT Command
645 -
646 -AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
647 -
648 -m: 0: no CRC; 1: add CRC-16/MODBUS in the end of this command.
649 -
650 -
651 -
652 -* Downlink Payload
653 -
654 -Format: A8 MM NN XX XX XX XX YY
655 -
656 -Where:
657 -
658 -* MM: 1: add CRC-16/MODBUS ; 0: no CRC
659 -* NN: The length of RS485 command
660 -* XX XX XX XX: RS485 command total NN bytes
661 -* 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
662 -
663 -**Example 1:**
664 -
665 -To connect a Modbus Alarm with below commands.
666 -
667 -* 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.
668 -
669 -* 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.
670 -
671 -So if user want to use downlink command to control to RS485 Alarm, he can use:
672 -
673 -**A8 01 06 0A 05 00 04 00 01 00**: to activate the RS485 Alarm
674 -
675 -**A8 01 06 0A 05 00 04 00 00 00**: to deactivate the RS485 Alarm
676 -
677 -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.
678 -
679 -
680 -**Example 2:**
681 -
682 -Check TTL Sensor return:
683 -
684 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image024.png]]
685 -
686 -
687 -
688 -
689 -==== Set Payload version ====
690 -
691 -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.
692 -
693 -* AT Command:
694 -
695 -AT+PAYVER: Set PAYVER field = 1
696 -
697 -
698 -* Downlink Payload:
699 -
700 -0xAE 01   à Set PAYVER field =  0x01
701 -
702 -0xAE 0F   à Set PAYVER field =  0x0F
703 -
704 -
705 -==== Set RS485 Sampling Commands ====
706 -
707 -AT+COMMANDx, AT+DATACUTx and AT+SEARCHx
708 -
709 -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]].
710 -
711 -
712 -* AT Command:
713 -
714 -AT+COMMANDx: Configure RS485 read command to sensor.
715 -
716 -AT+DATACUTx: Configure how to handle return from RS485 devices.
717 -
718 -AT+SEARCHx: Configure search command
719 -
720 -
721 -* Downlink Payload:
722 -
723 -0xAF downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
724 -
725 -Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
726 -
727 -Format: AF MM NN LL XX XX XX XX YY
728 -
729 -Where:
730 -
731 -* MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
732 -* NN: 0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
733 -* LL: The length of AT+COMMAND or AT+DATACUT command
734 -* XX XX XX XX: AT+COMMAND or AT+DATACUT command
735 -* 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.
736 -
737 -Example:
738 -
739 -**AF 03 01 06 0A 05 00 04 00 01 00**: Same as AT+COMMAND3=0A 05 00 04 00 01,1
740 -
741 -**AF 03 02 06 10 01 05 06 09 0A 00**: Same as AT+DATACUT3=**16**,**1**,**5+6+9+10**
742 -
743 -**AF 03 02 06 0B 02 05 07 08 0A 00**: Same as AT+DATACUT3=**11**,**2**,**5~~7+8~~10**
744 -
745 -
746 -0xAB downlink command can be used for set AT+SEARCHx
747 -
748 -Example: **AB aa 01 03 xx xx xx** (03 here means there are total 3 bytes after 03) So
749 -
750 -* AB aa 01 03 xx xx xx  same as AT+SEARCHaa=1,xx xx xx
751 -* 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
752 -
753 -**AB aa 02 03 xx xx xx 02 yy yy**  same as **AT+SEARCHaa=2,xx xx xx+yy yy**
754 -
755 -
756 -==== Fast command to handle MODBUS device ====
757 -
758 -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]].
759 -
760 -This command is valid since v1.3 firmware version
761 -
762 -
763 -AT+MBFUN has only two value:
764 -
765 -* AT+MBFUN=1: Enable Modbus reading. And get response base on the MODBUS return
766 -
767 -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.
768 -
769 -* AT+MBFUN=0: Disable Modbus fast reading.
770 -
771 -Example:
772 -
773 -* AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2 are not configure (0,0,0).
774 -* 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.
775 -* 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.
776 -
777 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image025.png]]
778 -
779 -
780 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image026.png]]
781 -
782 -
783 -* Downlink Commands:
784 -
785 -A9 aa -à Same as AT+MBFUN=aa
786 -
787 -
788 -==== RS485 command timeout ====
789 -
790 -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.
791 -
792 -Default value: 0, range:  0 ~~ 5 seconds
793 -
794 -
795 -* AT Command:
796 -
797 -AT+CMDDLaa=hex(bb cc)
798 -
799 -Example:
800 -
801 -**AT+CMDDL1=1000** to send the open time to 1000ms
802 -
803 -
804 -* Downlink Payload:
805 -
806 -0x AA aa bb cc
807 -
808 -Same as: AT+CMDDLaa=hex(bb cc)
809 -
810 - Example:
811 -
812 - 0xAA 01 03 E8  à Same as **AT+CMDDL1=1000 ms**
813 -
814 -
815 -==== [[Uplink>>path:#downlink_A8]] payload mode ====
816 -
817 -Define to use one uplink or multiple uplinks for the sampling.
818 -
819 -The use of this command please see: [[Compose Uplink payload>>path:#DataUP]]
820 -
821 -* AT Command:
822 -
823 -AT+DATAUP=0
824 -
825 -AT+DATAUP=1
826 -
827 -
828 -* Downlink Payload:
829 -
830 -0xAD 00   à Same as AT+DATAUP=0
831 -
832 -0xAD 01   à Same as AT+DATAUP=1
833 -
834 -
835 -==== Manually trigger an Uplink ====
836 -
837 -Ask device to send an uplink immediately.
838 -
839 -* Downlink Payload:
840 -
841 -0x08 FF, RS485-BL will immediately send an uplink.
842 -
843 -
844 -==== Clear RS485 Command ====
845 -
846 -The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
847 -
848 -
849 -* AT Command:
850 -
851 -**AT+CMDEAR=mm,nn**   mm: start position of erase ,nn: stop position of erase
852 -
853 -Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
854 -
855 -Example screen shot after clear all RS485 commands. 
856 -
857 -
858 -
859 -The uplink screen shot is:
860 -
861 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image023.png]]
862 -
863 -
864 -* Downlink Payload:
865 -
866 -0x09 aa bb same as AT+CMDEAR=aa,bb
867 -
868 -
869 -==== Set Serial Communication Parameters ====
870 -
871 -Set the Rs485 serial communication parameters:
872 -
873 -* AT Command:
874 -
875 -Set Baud Rate:
876 -
877 -AT+BAUDR=9600    ~/~/ Options: (1200,2400,4800,14400,19200,115200)
878 -
879 -
880 -Set UART parity
881 -
882 -AT+PARITY=0    ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity
883 -
884 -
885 -Set STOPBIT
886 -
887 -AT+STOPBIT=0    ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
888 -
889 -
890 -* Downlink Payload:
891 -
892 -A7 01 aa bb: Same  AT+BAUDR=hex(aa bb)*100
893 -
894 -Example:
895 -
896 -* A7 01 00 60   same as AT+BAUDR=9600
897 -* A7 01 04 80  same as AT+BAUDR=115200
898 -
899 -A7 02 aa: Same as  AT+PARITY=aa  (aa value: 00 , 01 or 02)
900 -
901 -A7 03 aa: Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
902 -
903 -
904 -==== Control output power duration ====
905 -
906 -User can set the output power duration before each sampling.
907 -
908 -* AT Command:
909 -
910 -Example:
911 -
912 -AT+3V3T=1000 ~/~/ 3V3 output power will open 1s before each sampling.
913 -
914 -AT+5VT=1000 ~/~/ +5V output power will open 1s before each sampling.
915 -
916 -
917 -* LoRaWAN Downlink Command:
918 -
919 -07 01 aa bb  Same as AT+5VT=(aa bb)
920 -
921 -07 02 aa bb  Same as AT+3V3T=(aa bb)
922 -
923 -
924 -
925 -
926 -1.
927 -11. Buttons
928 -
929 -|**Button**|**Feature**
930 -|**RST**|Reboot RS485-BL
931 -
932 -1.
933 -11. +3V3 Output
934 -
935 -RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor.
936 -
937 -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. 
938 -
939 -
940 -The +3V3 output time can be controlled by AT Command.
941 -
942 -**AT+3V3T=1000**
943 -
944 -Means set +3v3 valid time to have 1000ms. So, the real +3v3 output will actually have 1000ms + sampling time for other sensors.
945 -
946 -
947 -By default, the AT+3V3T=0. This is a special case, means the +3V3 output is always on at any time
948 -
949 -
950 -1.
951 -11. +5V Output
952 -
953 -RS485-BL has a Controllable +5V output, user can use this output to power external sensor.
954 -
955 -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. 
956 -
957 -
958 -The 5V output time can be controlled by AT Command.
959 -
960 -**AT+5VT=1000**
961 -
962 -Means set 5V valid time to have 1000ms. So, the real 5V output will actually have 1000ms + sampling time for other sensors.
963 -
964 -
965 -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.
966 -
967 -
968 -
969 -
970 -1.
971 -11. LEDs
972 -
973 -|**LEDs**|**Feature**
974 -|**LED1**|Blink when device transmit a packet.
975 -
976 -1.
977 -11. Switch Jumper
978 -
979 -|**Switch Jumper**|**Feature**
980 -|**SW1**|(((
981 -ISP position: Upgrade firmware via UART
982 -
983 -Flash position: Configure device, check running status.
984 -)))
985 -|**SW2**|(((
986 -5V position: set to compatible with 5v I/O.
987 -
988 -3.3v position: set to compatible with 3.3v I/O.,
989 -)))
990 -
991 -+3.3V: is always ON
992 -
993 -+5V: Only open before every sampling. The time is by default, it is AT+5VT=0.  Max open time. 5000 ms.
994 -
995 -1. Case Study
996 -
997 -User can check this URL for some case studies.
998 -
999 -[[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]]
1000 -
1001 -
1002 -
1003 -
1004 -1. Use AT Command
1005 -11. Access AT Command
1006 -
1007 -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.
1008 -
1009 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image027.png]]
1010 -
1011 -
1012 -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:
1013 -
1014 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image028.png]]
1015 -
1016 -
1017 -
1018 -More detail AT Command manual can be found at [[AT Command Manual>>path:#AT_COMMAND]]
1019 -
1020 -
1021 -
1022 -1.
1023 -11. Common AT Command Sequence
1024 -111. Multi-channel ABP mode (Use with SX1301/LG308)
1025 -
1026 -If device has not joined network yet:
1027 -
1028 -AT+FDR
1029 -
1030 -AT+NJM=0
1031 -
1032 -ATZ
1033 -
1034 -
1035 -If device already joined network:
1036 -
1037 -AT+NJM=0
1038 -
1039 -ATZ
1040 -
1041 -1.
1042 -11.
1043 -111. Single-channel ABP mode (Use with LG01/LG02)
1044 -
1045 -AT+FDR   Reset Parameters to Factory Default, Keys Reserve
1046 -
1047 -AT+NJM=0 Set to ABP mode
1048 -
1049 -AT+ADR=0 Set the Adaptive Data Rate Off
1050 -
1051 -AT+DR=5  Set Data Rate
1052 -
1053 -AT+TDC=60000  Set transmit interval to 60 seconds
1054 -
1055 -AT+CHS=868400000 Set transmit frequency to 868.4Mhz
1056 -
1057 -AT+RX2FQ=868400000 Set RX2Frequency to 868.4Mhz (according to the result from server)
1058 -
1059 -AT+RX2DR=5  Set RX2DR to match the downlink DR from server. see below
1060 -
1061 -AT+DADDR=26 01 1A F1 Set Device Address to 26 01 1A F1, this ID can be found in the LoRa Server portal.
1062 -
1063 -ATZ          Reset MCU
1064 -
1065 -**Note:**
1066 -
1067 -1. Make sure the device is set to ABP mode in the IoT Server.
1068 -1. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1069 -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.
1070 -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
1071 -
1072 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image029.png]]
1073 -
1074 -
1075 -1. FAQ
1076 -11. How to upgrade the image?
1077 -
1078 -The RS485-BL LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-BL to:
1079 -
1080 -* Support new features
1081 -* For bug fix
1082 -* Change LoRaWAN bands.
1083 -
1084 -Below shows the hardware connection for how to upload an image to RS485-BL:
1085 -
1086 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image030.png]]
1087 -
1088 -**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]].
1089 -
1090 -**Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
1091 -
1092 -**Step3: **Open flashloader; choose the correct COM port to update.
1093 -
1094 -
1095 -|(((
1096 -HOLD PRO then press the RST button, SYS will be ON, then click next
1097 -)))
1098 -
1099 -|(((
1100 -Board detected
1101 -)))
1102 -
1103 -|(((
1104 -
1105 -)))
1106 -
1107 -[[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]]
1108 -
1109 -
1110 -
1111 -[[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]]
1112 -
1113 -
1114 -[[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]]
1115 -
1116 -
1117 -1.
1118 -11. How to change the LoRa Frequency Bands/Region?
1119 -
1120 -User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download.
1121 -
1122 -
1123 -
1124 -1.
1125 -11. How many RS485-Slave can RS485-BL connects?
1126 -
1127 -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]].
1128 -
1129 -
1130 -
1131 -
1132 -1. Trouble Shooting     
1133 -11. Downlink doesn’t work, how to solve it?
1134 -
1135 -Please see this link for debug:
1136 -
1137 -[[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]] 
1138 -
1139 -
1140 -
1141 -1.
1142 -11. Why I can’t join TTN V3 in US915 /AU915 bands?
1143 -
1144 -It might about the channels mapping. Please see for detail.
1145 -
1146 -[[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]]
1147 -
1148 -
1149 -
1150 -1. Order Info
1151 -
1152 -**Part Number: RS485-BL-XXX**
1153 -
1154 -**XXX:**
1155 -
1156 -* **EU433**: frequency bands EU433
1157 -* **EU868**: frequency bands EU868
1158 -* **KR920**: frequency bands KR920
1159 -* **CN470**: frequency bands CN470
1160 -* **AS923**: frequency bands AS923
1161 -* **AU915**: frequency bands AU915
1162 -* **US915**: frequency bands US915
1163 -* **IN865**: frequency bands IN865
1164 -* **RU864**: frequency bands RU864
1165 -* **KZ865: **frequency bands KZ865
1166 -
1167 -1. Packing Info
1168 -
1169 -**Package Includes**:
1170 -
1171 -* RS485-BL x 1
1172 -* Stick Antenna for LoRa RF part x 1
1173 -* Program cable x 1
1174 -
1175 -**Dimension and weight**:
1176 -
1177 -* Device Size: 13.5 x 7 x 3 cm
1178 -* Device Weight: 105g
1179 -* Package Size / pcs : 14.5 x 8 x 5 cm
1180 -* Weight / pcs : 170g
1181 -
1182 -1. Support
1183 -
1184 -* 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.
1185 -* 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
1186 -
1187 -[[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]]
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