Last modified by Karry Zhuang on 2025/03/06 16:34
<
From version < 30.2 >
edited by Xiaoling
on 2022/05/23 09:40
To version < 22.3 >
edited by Xiaoling
on 2022/05/23 09:12
>
Change comment: There is no comment for this version

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... ... @@ -41,17 +41,17 @@
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  
48 -*
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. 
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-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.
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.
191 191  )))
192 192  
193 193  [[image:1652953568895-172.png||height="232" width="724"]]
... ... @@ -195,19 +195,23 @@
195 195  == 3.3 Configure Commands to read data ==
196 196  
197 197  (((
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.
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.
200 200  )))
201 201  
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 -
207 207  === 3.3.1 onfigure UART settings for RS485 or TTL communication ===
208 208  
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:
203 +RS485-BL can connect to either RS485 sensors or TTL sensor. User need to specify what type of sensor need to connect.
210 210  
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 +
211 211  (% border="1" style="background-color:#ffffcc; color:green; width:795px" %)
212 212  |(((
213 213  **AT Commands**
... ... @@ -232,7 +232,13 @@
232 232  |(((
233 233  AT+PARITY
234 234  )))|(% style="width:285px" %)(((
239 +(((
235 235  Set UART parity (for RS485 connection)
241 +)))
242 +
243 +(((
244 +Default Value is: no parity.
245 +)))
236 236  )))|(% style="width:347px" %)(((
237 237  (((
238 238  AT+PARITY=0
... ... @@ -250,7 +250,7 @@
250 250  )))
251 251  
252 252  (((
253 -
263 +Default Value is: 1bit.
254 254  )))
255 255  )))|(% style="width:347px" %)(((
256 256  (((
... ... @@ -269,10 +269,12 @@
269 269  === 3.3.2 Configure sensors ===
270 270  
271 271  (((
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 +
272 272  (((
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.
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.
274 274  )))
275 -)))
276 276  
277 277  (% border="1" style="background-color:#ffffcc; color:green; width:806px" %)
278 278  |**AT Commands**|(% style="width:418px" %)**Description**|(% style="width:256px" %)**Example**
... ... @@ -284,6 +284,8 @@
284 284  mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
285 285  )))|(% style="width:256px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
286 286  
299 +Detail of AT+CFGDEV command see [[AT+CFGDEV detail>>path:#AT_CFGDEV]].
300 +
287 287  === 3.3.3 Configure read commands for each sampling ===
288 288  
289 289  (((
... ... @@ -365,17 +365,11 @@
365 365  **m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command**
366 366  )))
367 367  
368 -(((
369 369  For example, if we have a RS485 sensor. The command to get sensor value is: 01 03 0B B8 00 02 46 0A. Where 01 03 0B B8 00 02 is the Modbus command to read the register 0B B8 where stored the sensor value. The 46 0A is the CRC-16/MODBUS which calculate manually.
370 -)))
371 371  
372 -(((
373 373  In the RS485-BL, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
374 -)))
375 375  
376 -(((
377 377  **AT+SEARCHx**: This command defines how to handle the return from AT+COMMANDx.
378 -)))
379 379  
380 380  (% border="1" class="table-bordered" %)
381 381  |(((
... ... @@ -387,24 +387,26 @@
387 387  
388 388  )))
389 389  
390 -**Examples:**
398 +Examples:
391 391  
392 -~1. For a return string from AT+COMMAND1: 16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
400 +1. For a return string from AT+COMMAND1: 16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
393 393  
394 394  If we set AT+SEARCH1=1,1E 56 34.      (max 5 bytes for prefix)
395 395  
396 -The valid data will be all bytes after 1E 56 34 , so it is (% style="background-color:yellow" %)** 2e 30 58 5f 36 41 30 31 00 49**
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
397 397  
398 -[[image:1653269403619-508.png]]
406 +[[image:1652954654347-831.png]]
399 399  
400 -2. For a return string from AT+COMMAND1:  16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
401 401  
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 +
402 402  If we set AT+SEARCH1=2, 1E 56 34+31 00 49
403 403  
404 -Device will search the bytes between 1E 56 34 and 31 00 49. So it is (% style="background-color:yellow" %)** 2e 30 58 5f 36 41 30**
413 +Device will search the bytes between 1E 56 34 and 31 00 49. So it is 2e 30 58 5f 36 41 30
405 405  
406 -[[image:1653269438444-278.png]]
415 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image014.png]]
407 407  
417 +
408 408  **AT+DATACUTx : **This command defines how to handle the return from AT+COMMANDx, max return length is 45 bytes.
409 409  
410 410  |(((
... ... @@ -419,79 +419,76 @@
419 419  
420 420  * Grab bytes:
421 421  
422 -[[image:1653269551753-223.png||height="311" width="717"]]
432 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image015.png]]
423 423  
424 424  * Grab a section.
425 425  
426 -[[image:1653269568276-930.png||height="325" width="718"]]
436 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image016.png]]
427 427  
428 428  * Grab different sections.
429 429  
430 -[[image:1653269593172-426.png||height="303" width="725"]]
440 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image017.png]]
431 431  
432 -(% style="color:red" %)**Note:**
433 433  
443 +Note:
444 +
434 434  AT+SEARCHx and AT+DATACUTx can be used together, if both commands are set, RS485-BL will first process AT+SEARCHx on the return string and get a temporary string, and then process AT+DATACUTx on this temporary string to get the final payload. In this case, AT+DATACUTx need to set to format AT+DATACUTx=0,xx,xx where the return bytes set to 0.
435 435  
436 436  Example:
437 437  
438 -(% style="color:red" %)AT+COMMAND1=11 01 1E D0,0
449 +AT+COMMAND1=11 01 1E D0,0
439 439  
440 -(% style="color:red" %)AT+SEARCH1=1,1E 56 34
451 +AT+SEARCH1=1,1E 56 34
441 441  
442 -(% style="color:red" %)AT+DATACUT1=0,2,1~~5
453 +AT+DATACUT1=0,2,1~~5
443 443  
444 -(% style="color:red" %)Return string from AT+COMMAND1: 16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
455 +Return string from AT+COMMAND1: 16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
445 445  
446 -(% style="color:red" %)String after SEARCH command: 2e 30 58 5f 36 41 30 31 00 49
457 +String after SEARCH command: 2e 30 58 5f 36 41 30 31 00 49
447 447  
448 -(% style="color:red" %)Valid payload after DataCUT command: 2e 30 58 5f 36
459 +Valid payload after DataCUT command: 2e 30 58 5f 36
449 449  
450 -[[image:1653269618463-608.png]]
461 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image018.png]]
451 451  
452 -=== 3.3.4 Compose the uplink payload ===
453 453  
454 -(((
464 +
465 +
466 +1.
467 +11.
468 +111. Compose the uplink payload
469 +
455 455  Through AT+COMMANDx and AT+DATACUTx we got valid value from each RS485 commands, Assume these valid value are RETURN1, RETURN2, .., to RETURNx. The next step is how to compose the LoRa Uplink Payload by these RETURNs. The command is **AT+DATAUP.**
456 -)))
457 457  
458 -(((
459 -(% style="color:#4f81bd" %)**Examples: AT+DATAUP=0**
460 -)))
461 461  
462 -(((
463 -Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**A SIGNLE UPLINK**.
464 -)))
473 +**Examples: AT+DATAUP=0**
465 465  
466 -(((
475 +Compose the uplink payload with value returns in sequence and send with **A SIGNLE UPLINK**.
476 +
467 467  Final Payload is
468 -)))
469 469  
470 -(((
471 -(% style="color:#4f81bd" %)**Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx**
472 -)))
479 +Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx
473 473  
474 -(((
475 475  Where PAYVER is defined by AT+PAYVER, below is an example screen shot.
476 -)))
477 477  
478 -[[image:1653269759169-150.png||height="513" width="716"]]
483 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image019.png]]
479 479  
480 -(% style="color:#4f81bd" %)**Examples: AT+DATAUP=1**
481 481  
482 -Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
483 483  
487 +**Examples: AT+DATAUP=1**
488 +
489 +Compose the uplink payload with value returns in sequence and send with **Multiply UPLINKs**.
490 +
484 484  Final Payload is
485 485  
486 -(% style="color:#4f81bd" %)**Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
493 +Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA
487 487  
488 488  1. Battery Info (2 bytes): Battery voltage
489 489  1. PAYVER (1 byte): Defined by AT+PAYVER
490 490  1. PAYLOAD COUNT (1 byte): Total how many uplinks of this sampling.
491 491  1. PAYLOAD# (1 byte): Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
492 -1. DATA: Valid value: max 6 bytes(US915 version here, Notice*!) for each uplink so each uplink <= 11 bytes. For the last uplink, DATA will might less than 6 bytes
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
493 493  
494 -[[image:1653269916228-732.png]]
501 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image020.png]]
495 495  
496 496  
497 497  So totally there will be 3 uplinks for this sampling, each uplink includes 6 bytes DATA
... ... @@ -521,8 +521,8 @@
521 521  
522 522  
523 523  
524 -1.
525 -11.
531 +1.
532 +11.
526 526  111. Uplink on demand
527 527  
528 528  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.
... ... @@ -535,8 +535,8 @@
535 535  
536 536  
537 537  
538 -1.
539 -11.
545 +1.
546 +11.
540 540  111. Uplink on Interrupt
541 541  
542 542  Put the interrupt sensor between 3.3v_out and GPIO ext.[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image022.png]]
... ... @@ -550,7 +550,7 @@
550 550  AT+INTMOD=3  Interrupt trigger by rising edge.
551 551  
552 552  
553 -1.
560 +1.
554 554  11. Uplink Payload
555 555  
556 556  |**Size(bytes)**|**2**|**1**|**Length depends on the return from the commands**
... ... @@ -612,15 +612,15 @@
612 612  
613 613  * **Sensor Related Commands**: These commands are special designed for RS485-BL.  User can see these commands below:
614 614  
615 -1.
616 -11.
622 +1.
623 +11.
617 617  111. Common Commands:
618 618  
619 619  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]]
620 620  
621 621  
622 -1.
623 -11.
629 +1.
630 +11.
624 624  111. Sensor related commands:
625 625  
626 626  ==== Choose Device Type (RS485 or TTL) ====
... ... @@ -926,13 +926,13 @@
926 926  
927 927  
928 928  
929 -1.
936 +1.
930 930  11. Buttons
931 931  
932 932  |**Button**|**Feature**
933 933  |**RST**|Reboot RS485-BL
934 934  
935 -1.
942 +1.
936 936  11. +3V3 Output
937 937  
938 938  RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor.
... ... @@ -950,7 +950,7 @@
950 950  By default, the AT+3V3T=0. This is a special case, means the +3V3 output is always on at any time
951 951  
952 952  
953 -1.
960 +1.
954 954  11. +5V Output
955 955  
956 956  RS485-BL has a Controllable +5V output, user can use this output to power external sensor.
... ... @@ -970,13 +970,13 @@
970 970  
971 971  
972 972  
973 -1.
980 +1.
974 974  11. LEDs
975 975  
976 976  |**LEDs**|**Feature**
977 977  |**LED1**|Blink when device transmit a packet.
978 978  
979 -1.
986 +1.
980 980  11. Switch Jumper
981 981  
982 982  |**Switch Jumper**|**Feature**
... ... @@ -1022,7 +1022,7 @@
1022 1022  
1023 1023  
1024 1024  
1025 -1.
1032 +1.
1026 1026  11. Common AT Command Sequence
1027 1027  111. Multi-channel ABP mode (Use with SX1301/LG308)
1028 1028  
... ... @@ -1041,8 +1041,8 @@
1041 1041  
1042 1042  ATZ
1043 1043  
1044 -1.
1045 -11.
1051 +1.
1052 +11.
1046 1046  111. Single-channel ABP mode (Use with LG01/LG02)
1047 1047  
1048 1048  AT+FDR   Reset Parameters to Factory Default, Keys Reserve
... ... @@ -1117,7 +1117,7 @@
1117 1117  [[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]]
1118 1118  
1119 1119  
1120 -1.
1127 +1.
1121 1121  11. How to change the LoRa Frequency Bands/Region?
1122 1122  
1123 1123  User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download.
... ... @@ -1124,7 +1124,7 @@
1124 1124  
1125 1125  
1126 1126  
1127 -1.
1134 +1.
1128 1128  11. How many RS485-Slave can RS485-BL connects?
1129 1129  
1130 1130  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]].
... ... @@ -1141,7 +1141,7 @@
1141 1141  
1142 1142  
1143 1143  
1144 -1.
1151 +1.
1145 1145  11. Why I can’t join TTN V3 in US915 /AU915 bands?
1146 1146  
1147 1147  It might about the channels mapping. Please see for detail.
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