Last modified by Karry Zhuang on 2025/03/06 16:34
<
From version < 32.5 >
edited by Xiaoling
on 2022/06/02 15:25
To version < 38.2 >
edited by Xiaoling
on 2022/06/02 16:10
>
Change comment: There is no comment for this version

Summary

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Content
... ... @@ -41,6 +41,7 @@
41 41  
42 42  == 1.2 Specifications ==
43 43  
44 +
44 44  **Hardware System:**
45 45  
46 46  * STM32L072CZT6 MCU
... ... @@ -99,6 +99,7 @@
99 99  
100 100  [[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
101 101  
103 +
102 102  == 1.6 Hardware Change log ==
103 103  
104 104  (((
... ... @@ -106,6 +106,8 @@
106 106  v1.2: Add External Interrupt Pin.
107 107  
108 108  v1.0: Release
111 +
112 +
109 109  )))
110 110  )))
111 111  
... ... @@ -122,6 +122,8 @@
122 122  )))
123 123  
124 124  [[image:1653268091319-405.png]]
129 +
130 +
125 125  )))
126 126  
127 127  = 3. Operation Mode =
... ... @@ -130,6 +130,8 @@
130 130  
131 131  (((
132 132  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 +
133 133  )))
134 134  
135 135  == 3.2 Example to join LoRaWAN network ==
... ... @@ -138,10 +138,15 @@
138 138  
139 139  [[image:1653268155545-638.png||height="334" width="724"]]
140 140  
149 +
141 141  (((
151 +(((
142 142  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 +)))
143 143  
155 +(((
144 144  485A+ and 485B- of the sensor are connected to RS485A and RA485B of RS485-LN respectively.
157 +)))
145 145  
146 146  [[image:1653268227651-549.png||height="592" width="720"]]
147 147  
... ... @@ -193,6 +193,7 @@
193 193  
194 194  [[image:1652953568895-172.png||height="232" width="724"]]
195 195  
209 +
196 196  == 3.3 Configure Commands to read data ==
197 197  
198 198  (((
... ... @@ -202,6 +202,8 @@
202 202  
203 203  (((
204 204  (% 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 +
205 205  )))
206 206  )))
207 207  
... ... @@ -209,19 +209,19 @@
209 209  
210 210  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:
211 211  
212 -(% border="1" style="background-color:#ffffcc; color:green; width:795px" %)
213 -|(((
228 +(% border="1" style="background-color:#ffffcc; color:green; width:782px" %)
229 +|(% style="width:128px" %)(((
214 214  **AT Commands**
215 -)))|(% style="width:285px" %)(((
231 +)))|(% style="width:305px" %)(((
216 216  **Description**
217 -)))|(% style="width:347px" %)(((
233 +)))|(% style="width:346px" %)(((
218 218  **Example**
219 219  )))
220 -|(((
236 +|(% style="width:128px" %)(((
221 221  AT+BAUDR
222 -)))|(% style="width:285px" %)(((
238 +)))|(% style="width:305px" %)(((
223 223  Set the baud rate (for RS485 connection). Default Value is: 9600.
224 -)))|(% style="width:347px" %)(((
240 +)))|(% style="width:346px" %)(((
225 225  (((
226 226  AT+BAUDR=9600
227 227  )))
... ... @@ -230,11 +230,11 @@
230 230  Options: (1200,2400,4800,14400,19200,115200)
231 231  )))
232 232  )))
233 -|(((
249 +|(% style="width:128px" %)(((
234 234  AT+PARITY
235 -)))|(% style="width:285px" %)(((
251 +)))|(% style="width:305px" %)(((
236 236  Set UART parity (for RS485 connection)
237 -)))|(% style="width:347px" %)(((
253 +)))|(% style="width:346px" %)(((
238 238  (((
239 239  AT+PARITY=0
240 240  )))
... ... @@ -243,9 +243,9 @@
243 243  Option: 0: no parity, 1: odd parity, 2: even parity
244 244  )))
245 245  )))
246 -|(((
262 +|(% style="width:128px" %)(((
247 247  AT+STOPBIT
248 -)))|(% style="width:285px" %)(((
264 +)))|(% style="width:305px" %)(((
249 249  (((
250 250  Set serial stopbit (for RS485 connection)
251 251  )))
... ... @@ -253,7 +253,7 @@
253 253  (((
254 254  
255 255  )))
256 -)))|(% style="width:347px" %)(((
272 +)))|(% style="width:346px" %)(((
257 257  (((
258 258  AT+STOPBIT=0 for 1bit
259 259  )))
... ... @@ -288,77 +288,34 @@
288 288  === 3.3.3 Configure read commands for each sampling ===
289 289  
290 290  (((
291 -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.
292 -)))
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.
293 293  
294 -(((
295 -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.
296 -)))
297 -
298 -(((
299 299  To save the LoRaWAN network bandwidth, we might need to read data from different sensors and combine their valid value into a short payload.
300 -)))
301 301  
302 -(((
303 303  This section describes how to achieve above goals.
304 -)))
305 305  
306 -(((
307 -During each sampling, the RS485-BL can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
308 -)))
313 +During each sampling, the RS485-LN can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
309 309  
310 -(((
311 -**Command from RS485-BL to Sensor:**
312 -)))
313 313  
314 -(((
315 -RS485-BL can send out pre-set max 15 strings via **AT+COMMAD1**, **ATCOMMAND2**,…, to **AT+COMMANDF** . All commands are of same grammar.
316 -)))
316 +**Each RS485 commands include two parts:**
317 317  
318 -(((
319 -**Handle return from sensors to RS485-BL**:
320 -)))
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.
321 321  
322 -(((
323 -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**
324 -)))
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.
325 325  
326 -* (((
327 -**AT+DATACUT**
328 -)))
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
329 329  
330 -(((
331 -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.
332 -)))
333 333  
334 -* (((
335 -**AT+SEARCH**
336 -)))
337 -
338 -(((
339 -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.
340 -)))
341 -
342 -(((
343 -**Define wait timeout:**
344 -)))
345 -
346 -(((
347 -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
348 -)))
349 -
350 -(((
351 351  After we got the valid value from each RS485 commands, we need to combine them together with the command **AT+DATAUP**.
352 -)))
353 353  
354 -**Examples:**
355 355  
356 356  Below are examples for the how above AT Commands works.
357 357  
358 -**AT+COMMANDx : **This command will be sent to RS485/TTL devices during each sampling, Max command length is 14 bytes. The grammar is:
359 359  
360 -(% border="1" class="table-bordered" %)
361 -|(((
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" %)(((
362 362  **AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
363 363  
364 364  **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
... ... @@ -366,49 +366,15 @@
366 366  **m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command**
367 367  )))
368 368  
369 -(((
370 370  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.
371 -)))
372 372  
373 -(((
374 -In the RS485-BL, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
375 -)))
344 +In the RS485-LN, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
376 376  
377 -(((
378 -**AT+SEARCHx**: This command defines how to handle the return from AT+COMMANDx.
379 -)))
380 380  
381 -(% border="1" class="table-bordered" %)
382 -|(((
383 -**AT+SEARCHx=aa,xx xx xx xx xx**
384 -
385 -* **aa: 1: prefix match mode; 2: prefix and suffix match mode**
386 -* **xx xx xx xx xx: match string. Max 5 bytes for prefix and 5 bytes for suffix**
387 -
388 -
389 -)))
390 -
391 -**Examples:**
392 -
393 -~1. For a return string from AT+COMMAND1: 16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
394 -
395 -If we set AT+SEARCH1=1,1E 56 34.      (max 5 bytes for prefix)
396 -
397 -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**
398 -
399 -[[image:1653269403619-508.png]]
400 -
401 -2. For a return string from AT+COMMAND1:  16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
402 -
403 -If we set AT+SEARCH1=2, 1E 56 34+31 00 49
404 -
405 -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**
406 -
407 -[[image:1653269438444-278.png]]
408 -
409 409  **AT+DATACUTx : **This command defines how to handle the return from AT+COMMANDx, max return length is 45 bytes.
410 410  
411 -|(((
349 +(% border="1" style="background-color:#4bacc6; color:white; width:725px" %)
350 +|(% style="width:722px" %)(((
412 412  **AT+DATACUTx=a,b,c**
413 413  
414 414  * **a: length for the return of AT+COMMAND**
... ... @@ -416,48 +416,37 @@
416 416  * **c: define the position for valid value.  **
417 417  )))
418 418  
419 -Examples:
358 +**Examples:**
420 420  
421 421  * Grab bytes:
422 422  
423 -[[image:1653269551753-223.png||height="311" width="717"]]
362 +[[image:image-20220602153621-1.png]]
424 424  
364 +
425 425  * Grab a section.
426 426  
427 -[[image:1653269568276-930.png||height="325" width="718"]]
367 +[[image:image-20220602153621-2.png]]
428 428  
369 +
429 429  * Grab different sections.
430 430  
431 -[[image:1653269593172-426.png||height="303" width="725"]]
372 +[[image:image-20220602153621-3.png]]
432 432  
433 -(% style="color:red" %)**Note:**
374 +
375 +)))
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 -(% style="color:red" %)AT+COMMAND1=11 01 1E D0,0
440 -
441 -(% style="color:red" %)AT+SEARCH1=1,1E 56 34
442 -
443 -(% style="color:red" %)AT+DATACUT1=0,2,1~~5
444 -
445 -(% style="color:red" %)Return string from AT+COMMAND1: 16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
446 -
447 -(% style="color:red" %)String after SEARCH command: 2e 30 58 5f 36 41 30 31 00 49
448 -
449 -(% style="color:red" %)Valid payload after DataCUT command: 2e 30 58 5f 36
450 -
451 -[[image:1653269618463-608.png]]
452 -
453 453  === 3.3.4 Compose the uplink payload ===
454 454  
455 455  (((
456 456  Through AT+COMMANDx and AT+DATACUTx we got valid value from each RS485 commands, Assume these valid value are RETURN1, RETURN2, .., to RETURNx. The next step is how to compose the LoRa Uplink Payload by these RETURNs. The command is **AT+DATAUP.**
381 +
382 +
457 457  )))
458 458  
459 459  (((
460 -(% style="color:#4f81bd" %)**Examples: AT+DATAUP=0**
386 +(% style="color:#037691" %)**Examples: AT+DATAUP=0**
387 +
388 +
461 461  )))
462 462  
463 463  (((
... ... @@ -478,8 +478,10 @@
478 478  
479 479  [[image:1653269759169-150.png||height="513" width="716"]]
480 480  
481 -(% style="color:#4f81bd" %)**Examples: AT+DATAUP=1**
482 482  
410 +(% style="color:#037691" %)**Examples: AT+DATAUP=1**
411 +
412 +
483 483  Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
484 484  
485 485  Final Payload is
... ... @@ -486,66 +486,61 @@
486 486  
487 487  (% style="color:#4f81bd" %)**Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
488 488  
489 -1. Battery Info (2 bytes): Battery voltage
490 -1. PAYVER (1 byte): Defined by AT+PAYVER
491 -1. PAYLOAD COUNT (1 byte): Total how many uplinks of this sampling.
492 -1. PAYLOAD# (1 byte): Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
493 -1. DATA: Valid value: max 6 bytes(US915 version here, Notice*!) for each uplink so each uplink <= 11 bytes. For the last uplink, DATA will might less than 6 bytes
419 +1. PAYVER: Defined by AT+PAYVER
420 +1. PAYLOAD COUNT: Total how many uplinks of this sampling.
421 +1. PAYLOAD#: Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
422 +1. DATA: Valid value: max 8 bytes for each uplink so each uplink <= 11 bytes. For the last uplink, DATA will might less than 8 bytes
494 494  
495 -[[image:1653269916228-732.png||height="433" width="711"]]
424 +[[image:image-20220602155039-4.png]]
496 496  
497 497  
498 -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
499 499  
500 -DATA1=RETURN1 Valid Value = (% style="background-color:green; color:white" %)20 20 0a 33 90 41
429 +DATA1=RETURN1 Valid Value + the first two of Valid value of RETURN10= **20 20 0a 33 90 41 02 aa**
501 501  
502 -DATA2=1^^st^^ ~~ 6^^th^^ byte of Valid value of RETURN10=(% style="background-color:green; color:white" %) 02 aa 05 81 0a 20
431 +DATA2=3^^rd^^ ~~ 10^^th^^ byte of Valid value of RETURN10= **05 81 0a 20 20 20 20 2d**
503 503  
504 -DATA3=7^^th^^ ~~ 11^^th^^ bytes of Valid value of RETURN10 = (% style="background-color:green; color:white" %)20 20 20 2d 30
433 +DATA3=the rest of Valid value of RETURN10= **30**
505 505  
506 -Below are the uplink payloads:
507 507  
508 -[[image:1653270130359-810.png]]
436 +(% style="color:red" %)Notice: In firmware v1.3, the Max bytes has been changed according to the max bytes in different Frequency Bands for lowest SF. As below:
509 509  
438 + ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink.
510 510  
511 -(% style="color:red" %)**Notice: the Max bytes is according to the max support bytes in different Frequency Bands for lowest SF. As below:**
440 + * For AU915/AS923 bands, if UplinkDwell time=0, max 11 bytes for each uplink.
512 512  
513 - ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink ( so 51 -5 = 46 max valid date)
442 + * For US915 band, max 11 bytes for each uplink.
514 514  
515 - * For AU915/AS923 bands, if UplinkDwell time=1, max 11 bytes for each uplink ( so 11 -5 = 6 max valid date).
444 + ~* For all other bands: max 51 bytes for each uplink.
516 516  
517 - * For US915 band, max 11 bytes for each uplink ( so 11 -5 = 6 max valid date).
518 518  
519 - ~* For all other bands: max 51 bytes for each uplink  ( so 51 -5 = 46 max valid date).
447 +Below are the uplink payloads:
520 520  
449 +[[image:1654157178836-407.png]]
450 +
451 +
521 521  === 3.3.5 Uplink on demand ===
522 522  
523 -Except uplink periodically, RS485-BL is able to uplink on demand. The server sends downlink command to RS485-BL and RS485 will uplink data base on the command.
454 +Except uplink periodically, RS485-LN is able to uplink on demand. The server send downlink command to RS485-LN and RS485 will uplink data base on the command.
524 524  
525 525  Downlink control command:
526 526  
527 -[[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.
528 528  
529 -[[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.
530 530  
531 531  
532 532  
533 -1.
534 -11.
535 -111. Uplink on Interrupt
464 +=== 3.3.6 Uplink on Interrupt ===
536 536  
537 -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.
538 538  
539 -AT+INTMOD=0  Disable Interrupt
468 +[[image:1654157342174-798.png]]
540 540  
541 -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.
542 542  
543 -AT+INTMOD=2  Interrupt trigger by falling edge. ( Default Value)
544 544  
545 -AT+INTMOD=3  Interrupt trigger by rising edge.
546 -
547 -
548 -1.
473 +1.
549 549  11. Uplink Payload
550 550  
551 551  |**Size(bytes)**|**2**|**1**|**Length depends on the return from the commands**
... ... @@ -607,15 +607,15 @@
607 607  
608 608  * **Sensor Related Commands**: These commands are special designed for RS485-BL.  User can see these commands below:
609 609  
610 -1.
611 -11.
535 +1.
536 +11.
612 612  111. Common Commands:
613 613  
614 614  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]]
615 615  
616 616  
617 -1.
618 -11.
542 +1.
543 +11.
619 619  111. Sensor related commands:
620 620  
621 621  ==== Choose Device Type (RS485 or TTL) ====
... ... @@ -921,13 +921,13 @@
921 921  
922 922  
923 923  
924 -1.
849 +1.
925 925  11. Buttons
926 926  
927 927  |**Button**|**Feature**
928 928  |**RST**|Reboot RS485-BL
929 929  
930 -1.
855 +1.
931 931  11. +3V3 Output
932 932  
933 933  RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor.
... ... @@ -945,7 +945,7 @@
945 945  By default, the AT+3V3T=0. This is a special case, means the +3V3 output is always on at any time
946 946  
947 947  
948 -1.
873 +1.
949 949  11. +5V Output
950 950  
951 951  RS485-BL has a Controllable +5V output, user can use this output to power external sensor.
... ... @@ -965,13 +965,13 @@
965 965  
966 966  
967 967  
968 -1.
893 +1.
969 969  11. LEDs
970 970  
971 971  |**LEDs**|**Feature**
972 972  |**LED1**|Blink when device transmit a packet.
973 973  
974 -1.
899 +1.
975 975  11. Switch Jumper
976 976  
977 977  |**Switch Jumper**|**Feature**
... ... @@ -1017,7 +1017,7 @@
1017 1017  
1018 1018  
1019 1019  
1020 -1.
945 +1.
1021 1021  11. Common AT Command Sequence
1022 1022  111. Multi-channel ABP mode (Use with SX1301/LG308)
1023 1023  
... ... @@ -1036,8 +1036,8 @@
1036 1036  
1037 1037  ATZ
1038 1038  
1039 -1.
1040 -11.
964 +1.
965 +11.
1041 1041  111. Single-channel ABP mode (Use with LG01/LG02)
1042 1042  
1043 1043  AT+FDR   Reset Parameters to Factory Default, Keys Reserve
... ... @@ -1112,7 +1112,7 @@
1112 1112  [[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]]
1113 1113  
1114 1114  
1115 -1.
1040 +1.
1116 1116  11. How to change the LoRa Frequency Bands/Region?
1117 1117  
1118 1118  User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download.
... ... @@ -1119,7 +1119,7 @@
1119 1119  
1120 1120  
1121 1121  
1122 -1.
1047 +1.
1123 1123  11. How many RS485-Slave can RS485-BL connects?
1124 1124  
1125 1125  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]].
... ... @@ -1136,7 +1136,7 @@
1136 1136  
1137 1137  
1138 1138  
1139 -1.
1064 +1.
1140 1140  11. Why I can’t join TTN V3 in US915 /AU915 bands?
1141 1141  
1142 1142  It might about the channels mapping. Please see for detail.
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