Last modified by Karry Zhuang on 2025/03/06 16:34
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From version < 18.2 >
edited by Xiaoling
on 2022/05/23 08:49
To version < 15.5 >
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Title
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1 -RS485-LN – RS485 to LoRaWAN Converter
1 +RS485-BL – Waterproof RS485 to LoRaWAN Converter
Content
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1 1  (% style="text-align:center" %)
2 -[[image:1653266934636-343.png||height="385" width="385"]]
2 +[[image:1652947681187-144.png||height="385" width="385"]]
3 3  
4 4  
5 5  
6 -**RS485-LN – RS485 to LoRaWAN Converter User Manual**
7 7  
7 +**RS485-BL – Waterproof RS485 to LoRaWAN Converter User Manual**
8 8  
9 +
9 9  **Table of Contents:**
10 10  
11 11  
... ... @@ -59,7 +59,7 @@
59 59  * Power Consumption (exclude RS485 device):
60 60  ** Idle: 6uA@3.3v
61 61  
62 -*
63 +*
63 63  ** 20dB Transmit: 130mA@3.3v
64 64  
65 65  **Interface for Model:**
... ... @@ -302,101 +302,87 @@
302 302  )))
303 303  )))
304 304  
305 -=== 3.3.2 Configure sensors ===
306 306  
307 -(((
308 -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**.
309 -)))
310 310  
311 -(((
312 -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.
313 -)))
314 314  
315 -(% border="1" style="background-color:#ffffcc; color:green; width:806px" %)
316 -|**AT Commands**|(% style="width:418px" %)**Description**|(% style="width:256px" %)**Example**
317 -|AT+CFGDEV|(% style="width:418px" %)(((
309 +1.
310 +11.
311 +111. Configure sensors
312 +
313 +Some sensors might need to configure before normal operation. User can configure such sensor via PC or through RS485-BL AT Commands AT+CFGDEV.
314 +
315 +
316 +When user issue an AT+CFGDEV command, Each 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.
317 +
318 +|**AT Commands**|**Description**|**Example**
319 +|AT+CFGDEV|(((
318 318  This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
319 319  
320 -AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
322 +AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
321 321  
322 -mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
323 -)))|(% style="width:256px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
324 +m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
325 +)))|AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
324 324  
325 325  Detail of AT+CFGDEV command see [[AT+CFGDEV detail>>path:#AT_CFGDEV]].
326 326  
327 -=== 3.3.3 Configure read commands for each sampling ===
328 328  
329 -(((
330 +
331 +
332 +
333 +1.
334 +11.
335 +111. Configure read commands for each sampling
336 +
330 330  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.
331 -)))
332 332  
333 -(((
339 +
334 334  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.
335 -)))
336 336  
337 -(((
342 +
338 338  To save the LoRaWAN network bandwidth, we might need to read data from different sensors and combine their valid value into a short payload.
339 -)))
340 340  
341 -(((
345 +
342 342  This section describes how to achieve above goals.
343 -)))
344 344  
345 -(((
348 +
346 346  During each sampling, the RS485-BL can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
347 -)))
348 348  
349 -(((
351 +
350 350  **Command from RS485-BL to Sensor:**
351 -)))
352 352  
353 -(((
354 354  RS485-BL can send out pre-set max 15 strings via **AT+COMMAD1**, **ATCOMMAND2**,…, to **AT+COMMANDF** . All commands are of same grammar.
355 -)))
356 356  
357 -(((
356 +
358 358  **Handle return from sensors to RS485-BL**:
359 -)))
360 360  
361 -(((
362 362  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**
363 -)))
364 364  
365 -* (((
366 -**AT+DATACUT**
367 -)))
368 368  
369 -(((
362 +* **AT+DATACUT**
363 +
370 370  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.
371 -)))
372 372  
373 -* (((
374 -**AT+SEARCH**
375 -)))
376 376  
377 -(((
367 +* **AT+SEARCH**
368 +
378 378  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.
379 -)))
380 380  
381 -(((
371 +
382 382  **Define wait timeout:**
383 -)))
384 384  
385 -(((
386 386  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
387 -)))
388 388  
389 -(((
376 +
390 390  After we got the valid value from each RS485 commands, we need to combine them together with the command **AT+DATAUP**.
391 -)))
392 392  
379 +
393 393  **Examples:**
394 394  
395 395  Below are examples for the how above AT Commands works.
396 396  
384 +
397 397  **AT+COMMANDx : **This command will be sent to RS485/TTL devices during each sampling, Max command length is 14 bytes. The grammar is:
398 398  
399 -(% border="1" class="table-bordered" %)
400 400  |(((
401 401  **AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
402 402  
... ... @@ -409,9 +409,9 @@
409 409  
410 410  In the RS485-BL, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
411 411  
399 +
412 412  **AT+SEARCHx**: This command defines how to handle the return from AT+COMMANDx.
413 413  
414 -(% border="1" class="table-bordered" %)
415 415  |(((
416 416  **AT+SEARCHx=aa,xx xx xx xx xx**
417 417  
... ... @@ -429,7 +429,7 @@
429 429  
430 430  The valid data will be all bytes after 1E 56 34 , so it is 2e 30 58 5f 36 41 30 31 00 49
431 431  
432 -[[image:1652954654347-831.png]]
419 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image013.png]]
433 433  
434 434  
435 435  1. For a return string from AT+COMMAND1:  16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
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490 490  
491 491  
492 492  1.
493 -11.
480 +11.
494 494  111. Compose the uplink payload
495 495  
496 496  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.**
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554 554  
555 555  
556 556  
557 -1.
558 -11.
544 +1.
545 +11.
559 559  111. Uplink on demand
560 560  
561 561  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.
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568 568  
569 569  
570 570  
571 -1.
572 -11.
558 +1.
559 +11.
573 573  111. Uplink on Interrupt
574 574  
575 575  Put the interrupt sensor between 3.3v_out and GPIO ext.[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image022.png]]
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583 583  AT+INTMOD=3  Interrupt trigger by rising edge.
584 584  
585 585  
586 -1.
573 +1.
587 587  11. Uplink Payload
588 588  
589 589  |**Size(bytes)**|**2**|**1**|**Length depends on the return from the commands**
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645 645  
646 646  * **Sensor Related Commands**: These commands are special designed for RS485-BL.  User can see these commands below:
647 647  
648 -1.
649 -11.
635 +1.
636 +11.
650 650  111. Common Commands:
651 651  
652 652  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]]
653 653  
654 654  
655 -1.
656 -11.
642 +1.
643 +11.
657 657  111. Sensor related commands:
658 658  
659 659  ==== Choose Device Type (RS485 or TTL) ====
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959 959  
960 960  
961 961  
962 -1.
949 +1.
963 963  11. Buttons
964 964  
965 965  |**Button**|**Feature**
966 966  |**RST**|Reboot RS485-BL
967 967  
968 -1.
955 +1.
969 969  11. +3V3 Output
970 970  
971 971  RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor.
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983 983  By default, the AT+3V3T=0. This is a special case, means the +3V3 output is always on at any time
984 984  
985 985  
986 -1.
973 +1.
987 987  11. +5V Output
988 988  
989 989  RS485-BL has a Controllable +5V output, user can use this output to power external sensor.
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1003 1003  
1004 1004  
1005 1005  
1006 -1.
993 +1.
1007 1007  11. LEDs
1008 1008  
1009 1009  |**LEDs**|**Feature**
1010 1010  |**LED1**|Blink when device transmit a packet.
1011 1011  
1012 -1.
999 +1.
1013 1013  11. Switch Jumper
1014 1014  
1015 1015  |**Switch Jumper**|**Feature**
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1055 1055  
1056 1056  
1057 1057  
1058 -1.
1045 +1.
1059 1059  11. Common AT Command Sequence
1060 1060  111. Multi-channel ABP mode (Use with SX1301/LG308)
1061 1061  
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1074 1074  
1075 1075  ATZ
1076 1076  
1077 -1.
1078 -11.
1064 +1.
1065 +11.
1079 1079  111. Single-channel ABP mode (Use with LG01/LG02)
1080 1080  
1081 1081  AT+FDR   Reset Parameters to Factory Default, Keys Reserve
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1150 1150  [[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]]
1151 1151  
1152 1152  
1153 -1.
1140 +1.
1154 1154  11. How to change the LoRa Frequency Bands/Region?
1155 1155  
1156 1156  User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download.
... ... @@ -1157,7 +1157,7 @@
1157 1157  
1158 1158  
1159 1159  
1160 -1.
1147 +1.
1161 1161  11. How many RS485-Slave can RS485-BL connects?
1162 1162  
1163 1163  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]].
... ... @@ -1174,7 +1174,7 @@
1174 1174  
1175 1175  
1176 1176  
1177 -1.
1164 +1.
1178 1178  11. Why I can’t join TTN V3 in US915 /AU915 bands?
1179 1179  
1180 1180  It might about the channels mapping. Please see for detail.
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