Last modified by Karry Zhuang on 2025/03/06 16:34
<
From version < 22.3 >
edited by Xiaoling
on 2022/05/23 09:12
To version < 29.2 >
edited by Xiaoling
on 2022/05/23 09:37
>
Change comment: There is no comment for this version

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... ... @@ -41,7 +41,7 @@
41 41  **Hardware System:**
42 42  
43 43  * STM32L072CZT6 MCU
44 -* SX1276/78 Wireless Chip
44 +* SX1276/78 Wireless Chip 
45 45  * Power Consumption (exclude RS485 device):
46 46  ** Idle: 32mA@12v
47 47  
... ... @@ -51,7 +51,7 @@
51 51  **Interface for Model:**
52 52  
53 53  * RS485
54 -* Power Input 7~~ 24V DC.
54 +* Power Input 7~~ 24V DC. 
55 55  
56 56  **LoRa Spec:**
57 57  
... ... @@ -187,7 +187,7 @@
187 187  
188 188  
189 189  (((
190 -**Step 2**: Power on RS485-BL and it will auto join to the TTN V3 network. After join success, it will start to upload message to TTN V3 and user can see in the panel.
190 +**Step 2**: Power on RS485-LN and it will auto join to the TTN V3 network. After join success, it will start to upload message to TTN V3 and user can see in the panel.
191 191  )))
192 192  
193 193  [[image:1652953568895-172.png||height="232" width="724"]]
... ... @@ -195,23 +195,19 @@
195 195  == 3.3 Configure Commands to read data ==
196 196  
197 197  (((
198 -There are plenty of RS485 and TTL level devices in the market and each device has different command to read the valid data. To support these devices in flexible, RS485-BL supports flexible command set. User can use [[AT Commands or LoRaWAN Downlink>>path:#AT_COMMAND]] Command to configure how RS485-BL should read the sensor and how to handle the return from RS485 or TTL sensors.
198 +(((
199 +There are plenty of RS485 devices in the market and each device has different command to read the valid data. To support these devices in flexible, RS485-LN supports flexible command set. User can use [[AT Commands>>path:#AT_COMMAND]] or LoRaWAN Downlink Command to configure what commands RS485-LN should send for each sampling and how to handle the return from RS485 devices.
199 199  )))
200 200  
202 +(((
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
204 +)))
205 +)))
206 +
201 201  === 3.3.1 onfigure UART settings for RS485 or TTL communication ===
202 202  
203 -RS485-BL can connect to either RS485 sensors or TTL sensor. User need to specify what type of sensor need to connect.
209 +To use RS485-LN to read data from RS485 sensors, connect the RS485-LN A/B traces to the sensors. And user need to make sure RS485-LN use the match UART setting to access the sensors. The related commands for UART settings are:
204 204  
205 -**~1. RS485-MODBUS mode:**
206 -
207 -AT+MOD=1 ~/~/ Support RS485-MODBUS type sensors. User can connect multiply RS485 , Modbus sensors to the A / B pins.
208 -
209 -**2. TTL mode:**
210 -
211 -AT+MOD=2 ~/~/ Support TTL Level sensors, User can connect one TTL Sensor to the TXD/RXD/GND pins.
212 -
213 -RS485-BL default UART settings is **9600, no parity, stop bit 1**. If the sensor has a different settings, user can change the RS485-BL setting to match.
214 -
215 215  (% border="1" style="background-color:#ffffcc; color:green; width:795px" %)
216 216  |(((
217 217  **AT Commands**
... ... @@ -236,13 +236,7 @@
236 236  |(((
237 237  AT+PARITY
238 238  )))|(% style="width:285px" %)(((
239 -(((
240 240  Set UART parity (for RS485 connection)
241 -)))
242 -
243 -(((
244 -Default Value is: no parity.
245 -)))
246 246  )))|(% style="width:347px" %)(((
247 247  (((
248 248  AT+PARITY=0
... ... @@ -260,7 +260,7 @@
260 260  )))
261 261  
262 262  (((
263 -Default Value is: 1bit.
253 +
264 264  )))
265 265  )))|(% style="width:347px" %)(((
266 266  (((
... ... @@ -279,12 +279,10 @@
279 279  === 3.3.2 Configure sensors ===
280 280  
281 281  (((
282 -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**.
283 -)))
284 -
285 285  (((
286 -When user issue an (% style="color:#4f81bd" %)**AT+CFGDEV**(%%) command, Each (% style="color:#4f81bd" %)**AT+CFGDEV**(%%) equals to send a command to the RS485 or TTL sensors. This command will only run when user input it and won’t run during each sampling.
273 +Some sensors might need to configure before normal operation. User can configure such sensor via PC and RS485 adapter or through RS485-LN AT Commands (% style="color:#4f81bd" %)**AT+CFGDEV**(%%). Each (% style="color:#4f81bd" %)**AT+CFGDEV **(%%)equals to send a RS485 command to sensors. This command will only run when user input it and won’t run during each sampling.
287 287  )))
275 +)))
288 288  
289 289  (% border="1" style="background-color:#ffffcc; color:green; width:806px" %)
290 290  |**AT Commands**|(% style="width:418px" %)**Description**|(% style="width:256px" %)**Example**
... ... @@ -296,8 +296,6 @@
296 296  mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
297 297  )))|(% style="width:256px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
298 298  
299 -Detail of AT+CFGDEV command see [[AT+CFGDEV detail>>path:#AT_CFGDEV]].
300 -
301 301  === 3.3.3 Configure read commands for each sampling ===
302 302  
303 303  (((
... ... @@ -379,11 +379,17 @@
379 379  **m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command**
380 380  )))
381 381  
368 +(((
382 382  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 +)))
383 383  
372 +(((
384 384  In the RS485-BL, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
374 +)))
385 385  
376 +(((
386 386  **AT+SEARCHx**: This command defines how to handle the return from AT+COMMANDx.
378 +)))
387 387  
388 388  (% border="1" class="table-bordered" %)
389 389  |(((
... ... @@ -395,26 +395,24 @@
395 395  
396 396  )))
397 397  
398 -Examples:
390 +**Examples:**
399 399  
400 -1. For a return string from AT+COMMAND1: 16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
392 +~1. For a return string from AT+COMMAND1: 16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
401 401  
402 402  If we set AT+SEARCH1=1,1E 56 34.      (max 5 bytes for prefix)
403 403  
404 -The valid data will be all bytes after 1E 56 34 , so it is 2e 30 58 5f 36 41 30 31 00 49
396 +The valid data will be all bytes after 1E 56 34 , so it is (% style="background-color:yellow" %)** 2e 30 58 5f 36 41 30 31 00 49**
405 405  
406 -[[image:1652954654347-831.png]]
398 +[[image:1653269403619-508.png]]
407 407  
400 +2. For a return string from AT+COMMAND1:  16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
408 408  
409 -1. For a return string from AT+COMMAND1:  16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
410 -
411 411  If we set AT+SEARCH1=2, 1E 56 34+31 00 49
412 412  
413 -Device will search the bytes between 1E 56 34 and 31 00 49. So it is 2e 30 58 5f 36 41 30
404 +Device will search the bytes between 1E 56 34 and 31 00 49. So it is (% style="background-color:yellow" %)** 2e 30 58 5f 36 41 30**
414 414  
415 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image014.png]]
406 +[[image:1653269438444-278.png]]
416 416  
417 -
418 418  **AT+DATACUTx : **This command defines how to handle the return from AT+COMMANDx, max return length is 45 bytes.
419 419  
420 420  |(((
... ... @@ -429,58 +429,63 @@
429 429  
430 430  * Grab bytes:
431 431  
432 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image015.png]]
422 +[[image:1653269551753-223.png||height="311" width="717"]]
433 433  
434 434  * Grab a section.
435 435  
436 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image016.png]]
426 +[[image:1653269568276-930.png||height="325" width="718"]]
437 437  
438 438  * Grab different sections.
439 439  
440 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image017.png]]
430 +[[image:1653269593172-426.png||height="303" width="725"]]
441 441  
432 +(% style="color:red" %)**Note:**
442 442  
443 -Note:
444 -
445 445  AT+SEARCHx and AT+DATACUTx can be used together, if both commands are set, RS485-BL will first process AT+SEARCHx on the return string and get a temporary string, and then process AT+DATACUTx on this temporary string to get the final payload. In this case, AT+DATACUTx need to set to format AT+DATACUTx=0,xx,xx where the return bytes set to 0.
446 446  
447 447  Example:
448 448  
449 -AT+COMMAND1=11 01 1E D0,0
438 +(% style="color:red" %)AT+COMMAND1=11 01 1E D0,0
450 450  
451 -AT+SEARCH1=1,1E 56 34
440 +(% style="color:red" %)AT+SEARCH1=1,1E 56 34
452 452  
453 -AT+DATACUT1=0,2,1~~5
442 +(% style="color:red" %)AT+DATACUT1=0,2,1~~5
454 454  
455 -Return string from AT+COMMAND1: 16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
444 +(% style="color:red" %)Return string from AT+COMMAND1: 16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
456 456  
457 -String after SEARCH command: 2e 30 58 5f 36 41 30 31 00 49
446 +(% style="color:red" %)String after SEARCH command: 2e 30 58 5f 36 41 30 31 00 49
458 458  
459 -Valid payload after DataCUT command: 2e 30 58 5f 36
448 +(% style="color:red" %)Valid payload after DataCUT command: 2e 30 58 5f 36
460 460  
461 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image018.png]]
450 +[[image:1653269618463-608.png]]
462 462  
452 +=== 3.3.4 Compose the uplink payload ===
463 463  
464 -
465 -
466 -1.
467 -11.
468 -111. Compose the uplink payload
469 -
454 +(((
470 470  Through AT+COMMANDx and AT+DATACUTx we got valid value from each RS485 commands, Assume these valid value are RETURN1, RETURN2, .., to RETURNx. The next step is how to compose the LoRa Uplink Payload by these RETURNs. The command is **AT+DATAUP.**
456 +)))
471 471  
458 +(((
459 +(% style="color:#4f81bd" %)**Examples: AT+DATAUP=0**
460 +)))
472 472  
473 -**Examples: AT+DATAUP=0**
462 +(((
463 +Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**A SIGNLE UPLINK**.
464 +)))
474 474  
475 -Compose the uplink payload with value returns in sequence and send with **A SIGNLE UPLINK**.
476 -
466 +(((
477 477  Final Payload is
468 +)))
478 478  
479 -Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx
470 +(((
471 +(% style="color:#4f81bd" %)**Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx**
472 +)))
480 480  
474 +(((
481 481  Where PAYVER is defined by AT+PAYVER, below is an example screen shot.
476 +)))
482 482  
483 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image019.png]]
478 +[[image:1653269759169-150.png]]
484 484  
485 485  
486 486  
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