Last modified by Xiaoling on 2025/04/23 15:56
<
From version < 22.3 >
edited by Xiaoling
on 2022/05/23 09:12
To version < 42.3 >
edited by Xiaoling
on 2022/06/02 16:47
>
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Summary

Details

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Content
... ... @@ -18,40 +18,42 @@
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 -* SX1276/78 Wireless Chip
48 +* 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:**
52 52  
53 53  * RS485
54 -* Power Input 7~~ 24V DC.
56 +* Power Input 7~~ 24V DC. 
55 55  
56 56  **LoRa Spec:**
57 57  
... ... @@ -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  
... ... @@ -187,44 +187,43 @@
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.
204 +**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"]]
194 194  
209 +
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.
213 +(((
214 +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  
201 -=== 3.3.1 onfigure UART settings for RS485 or TTL communication ===
217 +(((
218 +(% 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
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.
220 +
221 +)))
222 +)))
204 204  
205 -**~1. RS485-MODBUS mode:**
224 +=== 3.3.1 onfigure UART settings for RS485 or TTL communication ===
206 206  
207 -AT+MOD=1 ~/~/ Support RS485-MODBUS type sensors. User can connect multiply RS485 , Modbus sensors to the A / B pins.
226 +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:
208 208  
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 -(% border="1" style="background-color:#ffffcc; color:green; width:795px" %)
216 -|(((
228 +(% border="1" style="background-color:#ffffcc; color:green; width:782px" %)
229 +|(% style="width:128px" %)(((
217 217  **AT Commands**
218 -)))|(% style="width:285px" %)(((
231 +)))|(% style="width:305px" %)(((
219 219  **Description**
220 -)))|(% style="width:347px" %)(((
233 +)))|(% style="width:346px" %)(((
221 221  **Example**
222 222  )))
223 -|(((
236 +|(% style="width:128px" %)(((
224 224  AT+BAUDR
225 -)))|(% style="width:285px" %)(((
238 +)))|(% style="width:305px" %)(((
226 226  Set the baud rate (for RS485 connection). Default Value is: 9600.
227 -)))|(% style="width:347px" %)(((
240 +)))|(% style="width:346px" %)(((
228 228  (((
229 229  AT+BAUDR=9600
230 230  )))
... ... @@ -233,18 +233,12 @@
233 233  Options: (1200,2400,4800,14400,19200,115200)
234 234  )))
235 235  )))
236 -|(((
249 +|(% style="width:128px" %)(((
237 237  AT+PARITY
238 -)))|(% style="width:285px" %)(((
239 -(((
251 +)))|(% style="width:305px" %)(((
240 240  Set UART parity (for RS485 connection)
241 -)))
242 -
253 +)))|(% style="width:346px" %)(((
243 243  (((
244 -Default Value is: no parity.
245 -)))
246 -)))|(% style="width:347px" %)(((
247 -(((
248 248  AT+PARITY=0
249 249  )))
250 250  
... ... @@ -252,17 +252,17 @@
252 252  Option: 0: no parity, 1: odd parity, 2: even parity
253 253  )))
254 254  )))
255 -|(((
262 +|(% style="width:128px" %)(((
256 256  AT+STOPBIT
257 -)))|(% style="width:285px" %)(((
264 +)))|(% style="width:305px" %)(((
258 258  (((
259 259  Set serial stopbit (for RS485 connection)
260 260  )))
261 261  
262 262  (((
263 -Default Value is: 1bit.
270 +
264 264  )))
265 -)))|(% style="width:347px" %)(((
272 +)))|(% style="width:346px" %)(((
266 266  (((
267 267  AT+STOPBIT=0 for 1bit
268 268  )))
... ... @@ -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.
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.
287 287  )))
292 +)))
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**
... ... @@ -296,82 +296,37 @@
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  (((
304 -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.
305 -)))
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.
306 306  
307 -(((
308 -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.
309 -)))
310 -
311 -(((
312 312  To save the LoRaWAN network bandwidth, we might need to read data from different sensors and combine their valid value into a short payload.
313 -)))
314 314  
315 -(((
316 316  This section describes how to achieve above goals.
317 -)))
318 318  
319 -(((
320 -During each sampling, the RS485-BL can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
321 -)))
313 +During each sampling, the RS485-LN can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
322 322  
323 -(((
324 -**Command from RS485-BL to Sensor:**
325 -)))
326 326  
327 -(((
328 -RS485-BL can send out pre-set max 15 strings via **AT+COMMAD1**, **ATCOMMAND2**,…, to **AT+COMMANDF** . All commands are of same grammar.
329 -)))
316 +**Each RS485 commands include two parts:**
330 330  
331 -(((
332 -**Handle return from sensors to RS485-BL**:
333 -)))
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.
334 334  
335 -(((
336 -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**
337 -)))
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.
338 338  
339 -* (((
340 -**AT+DATACUT**
341 -)))
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
342 342  
343 -(((
344 -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.
345 -)))
346 346  
347 -* (((
348 -**AT+SEARCH**
349 -)))
350 -
351 -(((
352 -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.
353 -)))
354 -
355 -(((
356 -**Define wait timeout:**
357 -)))
358 -
359 -(((
360 -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
361 -)))
362 -
363 -(((
364 364  After we got the valid value from each RS485 commands, we need to combine them together with the command **AT+DATAUP**.
365 -)))
366 366  
367 -**Examples:**
368 368  
369 369  Below are examples for the how above AT Commands works.
370 370  
371 -**AT+COMMANDx : **This command will be sent to RS485/TTL devices during each sampling, Max command length is 14 bytes. The grammar is:
372 372  
373 -(% border="1" class="table-bordered" %)
374 -|(((
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" %)(((
375 375  **AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
376 376  
377 377  **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
... ... @@ -381,43 +381,13 @@
381 381  
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.
383 383  
384 -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.
385 385  
386 -**AT+SEARCHx**: This command defines how to handle the return from AT+COMMANDx.
387 387  
388 -(% border="1" class="table-bordered" %)
389 -|(((
390 -**AT+SEARCHx=aa,xx xx xx xx xx**
391 -
392 -* **aa: 1: prefix match mode; 2: prefix and suffix match mode**
393 -* **xx xx xx xx xx: match string. Max 5 bytes for prefix and 5 bytes for suffix**
394 -
395 -
396 -)))
397 -
398 -Examples:
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
401 -
402 -If we set AT+SEARCH1=1,1E 56 34.      (max 5 bytes for prefix)
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
405 -
406 -[[image:1652954654347-831.png]]
407 -
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 -If we set AT+SEARCH1=2, 1E 56 34+31 00 49
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
414 -
415 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image014.png]]
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 -|(((
349 +(% border="1" style="background-color:#4bacc6; color:white; width:725px" %)
350 +|(% style="width:722px" %)(((
421 421  **AT+DATACUTx=a,b,c**
422 422  
423 423  * **a: length for the return of AT+COMMAND**
... ... @@ -425,242 +425,183 @@
425 425  * **c: define the position for valid value.  **
426 426  )))
427 427  
428 -Examples:
358 +**Examples:**
429 429  
430 430  * Grab bytes:
431 431  
432 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image015.png]]
362 +[[image:image-20220602153621-1.png]]
433 433  
364 +
434 434  * Grab a section.
435 435  
436 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image016.png]]
367 +[[image:image-20220602153621-2.png]]
437 437  
369 +
438 438  * Grab different sections.
439 439  
440 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image017.png]]
372 +[[image:image-20220602153621-3.png]]
441 441  
374 +
375 +)))
442 442  
443 -Note:
377 +=== 3.3.4 Compose the uplink payload ===
444 444  
445 -AT+SEARCHx and AT+DATACUTx can be used together, if both commands are set, RS485-BL will first process AT+SEARCHx on the return string and get a temporary string, and then process AT+DATACUTx on this temporary string to get the final payload. In this case, AT+DATACUTx need to set to format AT+DATACUTx=0,xx,xx where the return bytes set to 0.
446 -
447 -Example:
448 -
449 -AT+COMMAND1=11 01 1E D0,0
450 -
451 -AT+SEARCH1=1,1E 56 34
452 -
453 -AT+DATACUT1=0,2,1~~5
454 -
455 -Return string from AT+COMMAND1: 16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
456 -
457 -String after SEARCH command: 2e 30 58 5f 36 41 30 31 00 49
458 -
459 -Valid payload after DataCUT command: 2e 30 58 5f 36
460 -
461 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image018.png]]
462 -
463 -
464 -
465 -
466 -1.
467 -11.
468 -111. Compose the uplink payload
469 -
379 +(((
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.**
471 471  
382 +
383 +)))
472 472  
473 -**Examples: AT+DATAUP=0**
385 +(((
386 +(% style="color:#037691" %)**Examples: AT+DATAUP=0**
474 474  
475 -Compose the uplink payload with value returns in sequence and send with **A SIGNLE UPLINK**.
388 +
389 +)))
476 476  
391 +(((
392 +Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**A SIGNLE UPLINK**.
393 +)))
394 +
395 +(((
477 477  Final Payload is
397 +)))
478 478  
479 -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 +)))
480 480  
403 +(((
481 481  Where PAYVER is defined by AT+PAYVER, below is an example screen shot.
405 +)))
482 482  
483 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image019.png]]
407 +[[image:1653269759169-150.png||height="513" width="716"]]
484 484  
485 485  
410 +(% style="color:#037691" %)**Examples: AT+DATAUP=1**
486 486  
487 -**Examples: AT+DATAUP=1**
488 488  
489 -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**.
490 490  
491 491  Final Payload is
492 492  
493 -Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA
417 +(% style="color:#4f81bd" %)**Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
494 494  
495 -1. Battery Info (2 bytes): Battery voltage
496 -1. PAYVER (1 byte): Defined by AT+PAYVER
497 -1. PAYLOAD COUNT (1 byte): Total how many uplinks of this sampling.
498 -1. PAYLOAD# (1 byte): Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
499 -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
500 500  
501 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image020.png]]
424 +[[image:image-20220602155039-4.png]]
502 502  
503 503  
504 -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
505 505  
506 -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**
507 507  
508 -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**
509 509  
510 -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**
511 511  
512 512  
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:
513 513  
514 -Below are the uplink payloads:
438 + ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink.
515 515  
516 -[[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.
517 517  
442 + * For US915 band, max 11 bytes for each uplink.
518 518  
519 -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.
520 520  
521 - ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink ( so 51 -5 = 46 max valid date)
522 522  
523 - * 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:
524 524  
525 - * For US915 band, max 11 bytes for each uplink ( so 11 -5 = 6 max valid date).
449 +[[image:1654157178836-407.png]]
526 526  
527 - ~* For all other bands: max 51 bytes for each uplink  ( so 51 -5 = 46 max valid date).
528 528  
452 +=== 3.3.5 Uplink on demand ===
529 529  
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.
530 530  
531 -1.
532 -11.
533 -111. Uplink on demand
534 -
535 -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.
536 -
537 537  Downlink control command:
538 538  
539 -[[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.
540 540  
541 -[[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.
542 542  
543 543  
544 544  
545 -1.
546 -11.
547 -111. Uplink on Interrupt
464 +=== 3.3.6 Uplink on Interrupt ===
548 548  
549 -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.
550 550  
551 -AT+INTMOD=0  Disable Interrupt
468 +[[image:1654157342174-798.png]]
552 552  
553 -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.
554 554  
555 -AT+INTMOD=2  Interrupt trigger by falling edge. ( Default Value)
556 556  
557 -AT+INTMOD=3  Interrupt trigger by rising edge.
473 +== 3.4 Uplink Payload ==
558 558  
559 -
560 -1.
561 -11. Uplink Payload
562 -
563 -|**Size(bytes)**|**2**|**1**|**Length depends on the return from the commands**
564 -|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" %)(((
565 565  Battery(mV)
566 566  
567 567  &
568 568  
569 569  Interrupt _Flag
570 -)))|(((
483 +)))|(% style="width:116px" %)(((
571 571  PAYLOAD_VER
572 572  
573 573  
574 -)))|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.
575 575  
576 576  Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
577 577  
578 578  
579 -function Decoder(bytes, port) {
492 +== 3.5 Configure RS485-BL via AT or Downlink ==
580 580  
581 -~/~/Payload Formats of RS485-BL Deceive
494 +User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
582 582  
583 -return {
584 -
585 - ~/~/Battery,units:V
586 -
587 - BatV:((bytes[0]<<8 | bytes[1])&0x7fff)/1000,
588 -
589 - ~/~/GPIO_EXTI 
590 -
591 - EXTI_Trigger:(bytes[0] & 0x80)? "TRUE":"FALSE",
592 -
593 - ~/~/payload of version
594 -
595 - Pay_ver:bytes[2],
596 -
597 - };
598 -
599 - }
600 -
601 -
602 -
603 -
604 -
605 -
606 -
607 -TTN V3 uplink screen shot.
608 -
609 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image023.png]]
610 -
611 -1.
612 -11. Configure RS485-BL via AT or Downlink
613 -
614 -User can configure RS485-BL via [[AT Commands >>path:#_​Using_the_AT]]or LoRaWAN Downlink Commands
615 -
616 616  There are two kinds of Commands:
617 617  
618 -* **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]]
619 619  
620 -* **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:
621 621  
622 -1.
623 -11.
624 -111. Common Commands:
502 +=== 3.5.1 Common Commands ===
625 625  
626 -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]]
627 627  
628 628  
629 -1.
630 -11.
631 -111. Sensor related commands:
507 +=== 3.5.2 Sensor related commands ===
632 632  
633 -==== 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.
634 634  
635 -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"]]
636 636  
637 -* 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)
638 638  
639 -**AT+MOD=1** ~/~/ Set to support RS485-MODBUS type sensors. User can connect multiply RS485 , Modbus sensors to the A / B pins.
640 640  
641 -**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 ===
642 642  
518 +==== ====
643 643  
644 -* Downlink Payload
520 +==== **RS485 Debug Command** ====
645 645  
646 -**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.
647 647  
524 +* **AT Command**
648 648  
526 +(% class="box infomessage" %)
527 +(((
528 +**AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m**
529 +)))
649 649  
650 -==== [[RS485 Debug Command>>path:#downlink_A8]] (AT+CFGDEV) ====
531 +m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
651 651  
652 -This command is used to configure the RS485 or TTL sensors; they won’t be used during sampling.
533 +* **Downlink Payload**
653 653  
654 -* AT Command
655 -
656 -AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
657 -
658 -m: 0: no CRC; 1: add CRC-16/MODBUS in the end of this command.
659 -
660 -
661 -
662 -* Downlink Payload
663 -
664 664  Format: A8 MM NN XX XX XX XX YY
665 665  
666 666  Where:
... ... @@ -668,9 +668,12 @@
668 668  * MM: 1: add CRC-16/MODBUS ; 0: no CRC
669 669  * NN: The length of RS485 command
670 670  * XX XX XX XX: RS485 command total NN bytes
671 -* 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.
672 672  
673 -**Example 1:**
547 +**Example 1** ~-~-> Configure without ask for uplink (YY=0)
674 674  
675 675  To connect a Modbus Alarm with below commands.
676 676  
... ... @@ -680,59 +680,76 @@
680 680  
681 681  So if user want to use downlink command to control to RS485 Alarm, he can use:
682 682  
683 -**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
684 684  
685 -**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
686 686  
687 687  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.
688 688  
689 689  
690 -**Example 2:**
564 +**Example 2** ~-~-> Configure with requesting uplink and original downlink command (**YY=FF**)
691 691  
692 -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**
693 693  
694 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image024.png]]
695 695  
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:
696 696  
571 + **A8** (% style="color:#4f81bd" %)**0A 08 00 04 00  **(% style="color:red" %)**01 06** ** **(% style="color:green" %)**0A 08 00 04 00 00**
697 697  
573 + [[image:1654159460680-153.png]]
698 698  
699 -==== Set Payload version ====
700 700  
576 +
577 +==== **Set Payload version** ====
578 +
701 701  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.
702 702  
703 -* AT Command:
581 +* **AT Command:**
704 704  
705 -AT+PAYVER: Set PAYVER field = 1
583 +(% class="box infomessage" %)
584 +(((
585 +**AT+PAYVER: Set PAYVER field = 1**
586 +)))
706 706  
707 707  
708 -* Downlink Payload:
589 +* **Downlink Payload:**
709 709  
710 -0xAE 01   à Set PAYVER field =  0x01
591 +**0xAE 01**  ~-~-> Set PAYVER field =  0x01
711 711  
712 -0xAE 0F   à Set PAYVER field =  0x0F
593 +**0xAE 0F**   ~-~-> Set PAYVER field =  0x0F
713 713  
714 714  
715 -==== Set RS485 Sampling Commands ====
716 716  
597 +==== **Set RS485 Sampling Commands** ====
598 +
717 717  AT+COMMANDx, AT+DATACUTx and AT+SEARCHx
718 718  
719 -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]].
601 +These three commands are used to configure how the RS485-BL polling data from Modbus device. Detail of usage please see : [[polling RS485 device>>||anchor="H3.3.3Configurereadcommandsforeachsampling"]].
720 720  
721 721  
722 -* AT Command:
604 +* **AT Command:**
723 723  
724 -AT+COMMANDx: Configure RS485 read command to sensor.
606 +(% class="box infomessage" %)
607 +(((
608 +**AT+COMMANDx: Configure RS485 read command to sensor.**
609 +)))
725 725  
726 -AT+DATACUTx: Configure how to handle return from RS485 devices.
611 +(% class="box infomessage" %)
612 +(((
613 +**AT+DATACUTx: Configure how to handle return from RS485 devices.**
614 +)))
727 727  
728 -AT+SEARCHx: Configure search command
616 +(% class="box infomessage" %)
617 +(((
618 +**AT+SEARCHx: Configure search command**
619 +)))
729 729  
730 730  
731 -* Downlink Payload:
622 +* **Downlink Payload:**
732 732  
733 -0xAF downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
624 +**0xAF** downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
734 734  
735 -Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
626 +(% style="color:red" %)**Note**(%%): if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
736 736  
737 737  Format: AF MM NN LL XX XX XX XX YY
738 738  
... ... @@ -739,23 +739,23 @@
739 739  Where:
740 740  
741 741  * MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
742 -* NN: 0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
743 -* LL: The length of AT+COMMAND or AT+DATACUT command
633 +* NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
634 +* LL:  The length of AT+COMMAND or AT+DATACUT command
744 744  * XX XX XX XX: AT+COMMAND or AT+DATACUT command
745 -* 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.
636 +* 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.
746 746  
747 -Example:
638 +**Example:**
748 748  
749 -**AF 03 01 06 0A 05 00 04 00 01 00**: Same as AT+COMMAND3=0A 05 00 04 00 01,1
640 +(% 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
750 750  
751 -**AF 03 02 06 10 01 05 06 09 0A 00**: Same as AT+DATACUT3=**16**,**1**,**5+6+9+10**
642 +(% 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**
752 752  
753 -**AF 03 02 06 0B 02 05 07 08 0A 00**: Same as AT+DATACUT3=**11**,**2**,**5~~7+8~~10**
644 +(% 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**
754 754  
755 755  
756 -0xAB downlink command can be used for set AT+SEARCHx
647 +**0xAB** downlink command can be used for set AT+SEARCHx
757 757  
758 -Example: **AB aa 01 03 xx xx xx** (03 here means there are total 3 bytes after 03) So
649 +**Example:** **AB aa 01 03 xx xx xx** (03 here means there are total 3 bytes after 03) So
759 759  
760 760  * AB aa 01 03 xx xx xx  same as AT+SEARCHaa=1,xx xx xx
761 761  * 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
... ... @@ -763,145 +763,164 @@
763 763  **AB aa 02 03 xx xx xx 02 yy yy**  same as **AT+SEARCHaa=2,xx xx xx+yy yy**
764 764  
765 765  
766 -==== Fast command to handle MODBUS device ====
767 767  
658 +==== **Fast command to handle MODBUS device** ====
659 +
768 768  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]].
769 769  
770 770  This command is valid since v1.3 firmware version
771 771  
772 772  
773 -AT+MBFUN has only two value:
665 +**AT+MBFUN has only two value:**
774 774  
775 -* AT+MBFUN=1: Enable Modbus reading. And get response base on the MODBUS return
667 +* **AT+MBFUN=1**: Enable Modbus reading. And get response base on the MODBUS return
776 776  
777 777  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.
778 778  
779 -* AT+MBFUN=0: Disable Modbus fast reading.
671 +* **AT+MBFUN=0**: Disable Modbus fast reading.
780 780  
781 -Example:
673 +**Example:**
782 782  
783 783  * AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2 are not configure (0,0,0).
784 784  * 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.
785 785  * 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.
786 786  
787 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image025.png]]
679 +[[image:1654133913295-597.png]]
788 788  
789 789  
790 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image026.png]]
682 +[[image:1654133954153-643.png]]
791 791  
792 792  
793 -* Downlink Commands:
685 +* **Downlink Commands:**
794 794  
795 -A9 aa -à Same as AT+MBFUN=aa
687 +**A9 aa** ~-~-> Same as AT+MBFUN=aa
796 796  
797 797  
798 -==== RS485 command timeout ====
799 799  
691 +==== **RS485 command timeout** ====
692 +
800 800  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.
801 801  
802 802  Default value: 0, range:  0 ~~ 5 seconds
803 803  
804 804  
805 -* AT Command:
698 +* **AT Command:**
806 806  
807 -AT+CMDDLaa=hex(bb cc)
700 +(% class="box infomessage" %)
701 +(((
702 +**AT+CMDDLaa=hex(bb cc)**
703 +)))
808 808  
809 -Example:
705 +**Example:**
810 810  
811 811  **AT+CMDDL1=1000** to send the open time to 1000ms
812 812  
813 813  
814 -* Downlink Payload:
710 +* **Downlink Payload:**
815 815  
816 816  0x AA aa bb cc
817 817  
818 818  Same as: AT+CMDDLaa=hex(bb cc)
819 819  
820 - Example:
716 + **Example:**
821 821  
822 - 0xAA 01 03 E8  à Same as **AT+CMDDL1=1000 ms**
718 + **0xAA 01 03 E8**  ~-~-> Same as **AT+CMDDL1=1000 ms**
823 823  
824 824  
825 -==== [[Uplink>>path:#downlink_A8]] payload mode ====
826 826  
722 +==== **Uplink payload mode** ====
723 +
827 827  Define to use one uplink or multiple uplinks for the sampling.
828 828  
829 -The use of this command please see: [[Compose Uplink payload>>path:#DataUP]]
726 +The use of this command please see: [[Compose Uplink payload>>||anchor="H3.3.4Composetheuplinkpayload"]]
830 830  
831 -* AT Command:
728 +* **AT Command:**
832 832  
833 -AT+DATAUP=0
730 +(% class="box infomessage" %)
731 +(((
732 +**AT+DATAUP=0**
733 +)))
834 834  
835 -AT+DATAUP=1
735 +(% class="box infomessage" %)
736 +(((
737 +**AT+DATAUP=1**
738 +)))
836 836  
837 837  
838 -* Downlink Payload:
741 +* **Downlink Payload:**
839 839  
840 -0xAD 00   à Same as AT+DATAUP=0
743 +**0xAD 00**  **~-~->** Same as AT+DATAUP=0
841 841  
842 -0xAD 01   à Same as AT+DATAUP=1
745 +**0xAD 01**  **~-~->** Same as AT+DATAUP=1
843 843  
844 844  
845 -==== Manually trigger an Uplink ====
846 846  
749 +==== **Manually trigger an Uplink** ====
750 +
847 847  Ask device to send an uplink immediately.
848 848  
849 -* Downlink Payload:
753 +* **Downlink Payload:**
850 850  
851 -0x08 FF, RS485-BL will immediately send an uplink.
755 +**0x08 FF**, RS485-BL will immediately send an uplink.
852 852  
853 853  
854 -==== Clear RS485 Command ====
855 855  
759 +==== **Clear RS485 Command** ====
760 +
856 856  The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
857 857  
858 858  
859 -* AT Command:
764 +* **AT Command:**
860 860  
861 -**AT+CMDEAR=mm,nn**   mm: start position of erase ,nn: stop position of erase
766 +(% 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
862 862  
863 -Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
864 -
865 865  Example screen shot after clear all RS485 commands. 
866 866  
867 867  
868 -
869 869  The uplink screen shot is:
870 870  
871 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image023.png]]
773 +[[image:1654134704555-320.png]]
872 872  
873 873  
874 -* Downlink Payload:
776 +* **Downlink Payload:**
875 875  
876 -0x09 aa bb same as AT+CMDEAR=aa,bb
778 +**0x09 aa bb** same as AT+CMDEAR=aa,bb
877 877  
878 878  
879 -==== Set Serial Communication Parameters ====
880 880  
782 +==== **Set Serial Communication Parameters** ====
783 +
881 881  Set the Rs485 serial communication parameters:
882 882  
883 -* AT Command:
786 +* **AT Command:**
884 884  
885 885  Set Baud Rate:
886 886  
887 -AT+BAUDR=9600    ~/~/ Options: (1200,2400,4800,14400,19200,115200)
790 +(% class="box infomessage" %)
791 +(((
792 +**AT+BAUDR=9600**    ~/~/ Options: (1200,2400,4800,14400,19200,115200)
793 +)))
888 888  
795 +Set UART Parity
889 889  
890 -Set UART parity
797 +(% class="box infomessage" %)
798 +(((
799 +**AT+PARITY=0**    ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity
800 +)))
891 891  
892 -AT+PARITY=0    ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity
893 -
894 -
895 895  Set STOPBIT
896 896  
897 -AT+STOPBIT=0    ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
804 +(% class="box infomessage" %)
805 +(((
806 +**AT+STOPBIT=0**    ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
807 +)))
898 898  
899 899  
900 -* Downlink Payload:
810 +* **Downlink Payload:**
901 901  
902 -A7 01 aa bb: Same  AT+BAUDR=hex(aa bb)*100
812 +**A7 01 aa bb**: Same  AT+BAUDR=hex(aa bb)*100
903 903  
904 -Example:
814 +**Example:**
905 905  
906 906  * A7 01 00 60   same as AT+BAUDR=9600
907 907  * A7 01 04 80  same as AT+BAUDR=115200
... ... @@ -911,287 +911,22 @@
911 911  A7 03 aa: Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
912 912  
913 913  
914 -==== Control output power duration ====
915 915  
825 +==== **Control output power duration** ====
826 +
916 916  User can set the output power duration before each sampling.
917 917  
918 -* AT Command:
829 +* **AT Command:**
919 919  
920 -Example:
831 +**Example:**
921 921  
922 -AT+3V3T=1000 ~/~/ 3V3 output power will open 1s before each sampling.
833 +**AT+3V3T=1000**  ~/~/ 3V3 output power will open 1s before each sampling.
923 923  
924 -AT+5VT=1000 ~/~/ +5V output power will open 1s before each sampling.
835 +**AT+5VT=1000**  ~/~/ +5V output power will open 1s before each sampling.
925 925  
926 926  
927 -* LoRaWAN Downlink Command:
838 +* **LoRaWAN Downlink Command:**
928 928  
929 -07 01 aa bb  Same as AT+5VT=(aa bb)
840 +**07 01 aa bb**  Same as AT+5VT=(aa bb)
930 930  
931 -07 02 aa bb  Same as AT+3V3T=(aa bb)
932 -
933 -
934 -
935 -
936 -1.
937 -11. Buttons
938 -
939 -|**Button**|**Feature**
940 -|**RST**|Reboot RS485-BL
941 -
942 -1.
943 -11. +3V3 Output
944 -
945 -RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor.
946 -
947 -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. 
948 -
949 -
950 -The +3V3 output time can be controlled by AT Command.
951 -
952 -**AT+3V3T=1000**
953 -
954 -Means set +3v3 valid time to have 1000ms. So, the real +3v3 output will actually have 1000ms + sampling time for other sensors.
955 -
956 -
957 -By default, the AT+3V3T=0. This is a special case, means the +3V3 output is always on at any time
958 -
959 -
960 -1.
961 -11. +5V Output
962 -
963 -RS485-BL has a Controllable +5V output, user can use this output to power external sensor.
964 -
965 -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. 
966 -
967 -
968 -The 5V output time can be controlled by AT Command.
969 -
970 -**AT+5VT=1000**
971 -
972 -Means set 5V valid time to have 1000ms. So, the real 5V output will actually have 1000ms + sampling time for other sensors.
973 -
974 -
975 -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.
976 -
977 -
978 -
979 -
980 -1.
981 -11. LEDs
982 -
983 -|**LEDs**|**Feature**
984 -|**LED1**|Blink when device transmit a packet.
985 -
986 -1.
987 -11. Switch Jumper
988 -
989 -|**Switch Jumper**|**Feature**
990 -|**SW1**|(((
991 -ISP position: Upgrade firmware via UART
992 -
993 -Flash position: Configure device, check running status.
994 -)))
995 -|**SW2**|(((
996 -5V position: set to compatible with 5v I/O.
997 -
998 -3.3v position: set to compatible with 3.3v I/O.,
999 -)))
1000 -
1001 -+3.3V: is always ON
1002 -
1003 -+5V: Only open before every sampling. The time is by default, it is AT+5VT=0.  Max open time. 5000 ms.
1004 -
1005 -1. Case Study
1006 -
1007 -User can check this URL for some case studies.
1008 -
1009 -[[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]]
1010 -
1011 -
1012 -
1013 -
1014 -1. Use AT Command
1015 -11. Access AT Command
1016 -
1017 -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.
1018 -
1019 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image027.png]]
1020 -
1021 -
1022 -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:
1023 -
1024 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image028.png]]
1025 -
1026 -
1027 -
1028 -More detail AT Command manual can be found at [[AT Command Manual>>path:#AT_COMMAND]]
1029 -
1030 -
1031 -
1032 -1.
1033 -11. Common AT Command Sequence
1034 -111. Multi-channel ABP mode (Use with SX1301/LG308)
1035 -
1036 -If device has not joined network yet:
1037 -
1038 -AT+FDR
1039 -
1040 -AT+NJM=0
1041 -
1042 -ATZ
1043 -
1044 -
1045 -If device already joined network:
1046 -
1047 -AT+NJM=0
1048 -
1049 -ATZ
1050 -
1051 -1.
1052 -11.
1053 -111. Single-channel ABP mode (Use with LG01/LG02)
1054 -
1055 -AT+FDR   Reset Parameters to Factory Default, Keys Reserve
1056 -
1057 -AT+NJM=0 Set to ABP mode
1058 -
1059 -AT+ADR=0 Set the Adaptive Data Rate Off
1060 -
1061 -AT+DR=5  Set Data Rate
1062 -
1063 -AT+TDC=60000  Set transmit interval to 60 seconds
1064 -
1065 -AT+CHS=868400000 Set transmit frequency to 868.4Mhz
1066 -
1067 -AT+RX2FQ=868400000 Set RX2Frequency to 868.4Mhz (according to the result from server)
1068 -
1069 -AT+RX2DR=5  Set RX2DR to match the downlink DR from server. see below
1070 -
1071 -AT+DADDR=26 01 1A F1 Set Device Address to 26 01 1A F1, this ID can be found in the LoRa Server portal.
1072 -
1073 -ATZ          Reset MCU
1074 -
1075 -**Note:**
1076 -
1077 -1. Make sure the device is set to ABP mode in the IoT Server.
1078 -1. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1079 -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.
1080 -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
1081 -
1082 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image029.png]]
1083 -
1084 -
1085 -1. FAQ
1086 -11. How to upgrade the image?
1087 -
1088 -The RS485-BL LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-BL to:
1089 -
1090 -* Support new features
1091 -* For bug fix
1092 -* Change LoRaWAN bands.
1093 -
1094 -Below shows the hardware connection for how to upload an image to RS485-BL:
1095 -
1096 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image030.png]]
1097 -
1098 -**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]].
1099 -
1100 -**Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
1101 -
1102 -**Step3: **Open flashloader; choose the correct COM port to update.
1103 -
1104 -
1105 -|(((
1106 -HOLD PRO then press the RST button, SYS will be ON, then click next
1107 -)))
1108 -
1109 -|(((
1110 -Board detected
1111 -)))
1112 -
1113 -|(((
1114 -
1115 -)))
1116 -
1117 -[[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]]
1118 -
1119 -
1120 -
1121 -[[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]]
1122 -
1123 -
1124 -[[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]]
1125 -
1126 -
1127 -1.
1128 -11. How to change the LoRa Frequency Bands/Region?
1129 -
1130 -User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download.
1131 -
1132 -
1133 -
1134 -1.
1135 -11. How many RS485-Slave can RS485-BL connects?
1136 -
1137 -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]].
1138 -
1139 -
1140 -
1141 -
1142 -1. Trouble Shooting     
1143 -11. Downlink doesn’t work, how to solve it?
1144 -
1145 -Please see this link for debug:
1146 -
1147 -[[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]] 
1148 -
1149 -
1150 -
1151 -1.
1152 -11. Why I can’t join TTN V3 in US915 /AU915 bands?
1153 -
1154 -It might about the channels mapping. Please see for detail.
1155 -
1156 -[[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]]
1157 -
1158 -
1159 -
1160 -1. Order Info
1161 -
1162 -**Part Number: RS485-BL-XXX**
1163 -
1164 -**XXX:**
1165 -
1166 -* **EU433**: frequency bands EU433
1167 -* **EU868**: frequency bands EU868
1168 -* **KR920**: frequency bands KR920
1169 -* **CN470**: frequency bands CN470
1170 -* **AS923**: frequency bands AS923
1171 -* **AU915**: frequency bands AU915
1172 -* **US915**: frequency bands US915
1173 -* **IN865**: frequency bands IN865
1174 -* **RU864**: frequency bands RU864
1175 -* **KZ865: **frequency bands KZ865
1176 -
1177 -1. Packing Info
1178 -
1179 -**Package Includes**:
1180 -
1181 -* RS485-BL x 1
1182 -* Stick Antenna for LoRa RF part x 1
1183 -* Program cable x 1
1184 -
1185 -**Dimension and weight**:
1186 -
1187 -* Device Size: 13.5 x 7 x 3 cm
1188 -* Device Weight: 105g
1189 -* Package Size / pcs : 14.5 x 8 x 5 cm
1190 -* Weight / pcs : 170g
1191 -
1192 -1. Support
1193 -
1194 -* 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.
1195 -* 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
1196 -
1197 -[[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]]
842 +**07 02 aa bb**  Same as AT+3V3T=(aa bb)
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