Last modified by Karry Zhuang on 2025/03/06 16:34
<
From version < 15.1 >
edited by Xiaoling
on 2022/05/19 17:46
To version < 18.2 >
edited by Xiaoling
on 2022/05/23 08:49
>
Change comment: There is no comment for this version

Summary

Details

Page properties
Title
... ... @@ -1,1 +1,1 @@
1 -RS485-BL – Waterproof RS485 to LoRaWAN Converter
1 +RS485-LN – RS485 to LoRaWAN Converter
Content
... ... @@ -1,12 +1,11 @@
1 1  (% style="text-align:center" %)
2 -[[image:1652947681187-144.png||height="385" width="385"]]
2 +[[image:1653266934636-343.png||height="385" width="385"]]
3 3  
4 4  
5 5  
6 +**RS485-LN – RS485 to LoRaWAN Converter User Manual**
6 6  
7 -**RS485-BL – Waterproof RS485 to LoRaWAN Converter User Manual**
8 8  
9 -
10 10  **Table of Contents:**
11 11  
12 12  
... ... @@ -60,7 +60,7 @@
60 60  * Power Consumption (exclude RS485 device):
61 61  ** Idle: 6uA@3.3v
62 62  
63 -*
62 +*
64 64  ** 20dB Transmit: 130mA@3.3v
65 65  
66 66  **Interface for Model:**
... ... @@ -167,203 +167,237 @@
167 167  
168 168  [[image:1652953414711-647.png||height="337" width="723"]]
169 169  
170 -
169 +(((
171 171  The RS485-BL in this example connected to two RS485 devices for demonstration, user can connect to other RS485 devices via the same method.
171 +)))
172 172  
173 -
173 +(((
174 174  The LG308 is already set to connect to [[TTN V3 network >>url:https://www.thethingsnetwork.org/]]. So what we need to now is only configure the TTN V3:
175 +)))
175 175  
177 +(((
176 176  **Step 1**: Create a device in TTN V3 with the OTAA keys from RS485-BL.
179 +)))
177 177  
181 +(((
178 178  Each RS485-BL is shipped with a sticker with unique device EUI:
183 +)))
179 179  
180 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image005.png]]
185 +[[image:1652953462722-299.png]]
181 181  
182 -
183 -
184 -
187 +(((
185 185  User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
189 +)))
186 186  
191 +(((
187 187  Add APP EUI in the application.
193 +)))
188 188  
189 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image006.png]]
190 190  
191 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image007.png]]
192 192  
193 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image008.png]]
194 194  
195 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image009.png]]
198 +[[image:image-20220519174512-1.png]]
196 196  
200 +[[image:image-20220519174512-2.png||height="328" width="731"]]
197 197  
202 +[[image:image-20220519174512-3.png||height="556" width="724"]]
198 198  
204 +[[image:image-20220519174512-4.png]]
199 199  
200 -
201 -
202 -
203 -
204 -
205 -
206 -
207 -
208 -
209 -
210 -
211 -
212 -
213 213  You can also choose to create the device manually.
214 214  
215 -|(((
216 -
217 -)))
208 +[[image:1652953542269-423.png||height="710" width="723"]]
218 218  
219 -
220 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image010.png]]
221 -
222 222  Add APP KEY and DEV EUI
223 223  
224 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image011.png]]
212 +[[image:1652953553383-907.png||height="514" width="724"]]
225 225  
226 226  
215 +(((
227 227  **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.
217 +)))
228 228  
229 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image012.png]]
219 +[[image:1652953568895-172.png||height="232" width="724"]]
230 230  
221 +== 3.3 Configure Commands to read data ==
231 231  
232 -
233 -
234 -1.
235 -11. Configure Commands to read data
236 -
223 +(((
237 237  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.
225 +)))
238 238  
227 +=== 3.3.1 onfigure UART settings for RS485 or TTL communication ===
239 239  
240 -1.
241 -11.
242 -111. Configure UART settings for RS485 or TTL communication
243 -
244 244  RS485-BL can connect to either RS485 sensors or TTL sensor. User need to specify what type of sensor need to connect.
245 245  
246 -1. RS485-MODBUS mode:
231 +**~1. RS485-MODBUS mode:**
247 247  
248 248  AT+MOD=1 ~/~/ Support RS485-MODBUS type sensors. User can connect multiply RS485 , Modbus sensors to the A / B pins.
249 249  
235 +**2. TTL mode:**
250 250  
251 -1. TTL mode:
252 -
253 253  AT+MOD=2 ~/~/ Support TTL Level sensors, User can connect one TTL Sensor to the TXD/RXD/GND pins.
254 254  
255 -
256 256  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.
257 257  
258 -
259 -|**AT Commands**|**Description**|**Example**
260 -|AT+BAUDR|Set the baud rate (for RS485 connection). Default Value is: 9600.|(((
241 +(% border="1" style="background-color:#ffffcc; color:green; width:795px" %)
242 +|(((
243 +**AT Commands**
244 +)))|(% style="width:285px" %)(((
245 +**Description**
246 +)))|(% style="width:347px" %)(((
247 +**Example**
248 +)))
249 +|(((
250 +AT+BAUDR
251 +)))|(% style="width:285px" %)(((
252 +Set the baud rate (for RS485 connection). Default Value is: 9600.
253 +)))|(% style="width:347px" %)(((
254 +(((
261 261  AT+BAUDR=9600
256 +)))
262 262  
258 +(((
263 263  Options: (1200,2400,4800,14400,19200,115200)
264 264  )))
265 -|AT+PARITY|(((
261 +)))
262 +|(((
263 +AT+PARITY
264 +)))|(% style="width:285px" %)(((
265 +(((
266 266  Set UART parity (for RS485 connection)
267 +)))
267 267  
269 +(((
268 268  Default Value is: no parity.
269 -)))|(((
271 +)))
272 +)))|(% style="width:347px" %)(((
273 +(((
270 270  AT+PARITY=0
275 +)))
271 271  
277 +(((
272 272  Option: 0: no parity, 1: odd parity, 2: even parity
273 273  )))
274 -|AT+STOPBIT|(((
280 +)))
281 +|(((
282 +AT+STOPBIT
283 +)))|(% style="width:285px" %)(((
284 +(((
275 275  Set serial stopbit (for RS485 connection)
286 +)))
276 276  
288 +(((
277 277  Default Value is: 1bit.
278 -)))|(((
290 +)))
291 +)))|(% style="width:347px" %)(((
292 +(((
279 279  AT+STOPBIT=0 for 1bit
294 +)))
280 280  
296 +(((
281 281  AT+STOPBIT=1 for 1.5 bit
298 +)))
282 282  
300 +(((
283 283  AT+STOPBIT=2 for 2 bits
284 284  )))
303 +)))
285 285  
305 +=== 3.3.2 Configure sensors ===
286 286  
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 +)))
287 287  
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 +)))
288 288  
289 -1.
290 -11.
291 -111. Configure sensors
292 -
293 -Some sensors might need to configure before normal operation. User can configure such sensor via PC or through RS485-BL AT Commands AT+CFGDEV.
294 -
295 -
296 -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.
297 -
298 -|**AT Commands**|**Description**|**Example**
299 -|AT+CFGDEV|(((
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" %)(((
300 300  This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
301 301  
302 -AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
320 +AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
303 303  
304 -m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
305 -)))|AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
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
306 306  
307 307  Detail of AT+CFGDEV command see [[AT+CFGDEV detail>>path:#AT_CFGDEV]].
308 308  
327 +=== 3.3.3 Configure read commands for each sampling ===
309 309  
310 -
311 -
312 -
313 -1.
314 -11.
315 -111. Configure read commands for each sampling
316 -
329 +(((
317 317  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 +)))
318 318  
319 -
333 +(((
320 320  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 +)))
321 321  
322 -
337 +(((
323 323  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 +)))
324 324  
325 -
341 +(((
326 326  This section describes how to achieve above goals.
343 +)))
327 327  
328 -
345 +(((
329 329  During each sampling, the RS485-BL can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
347 +)))
330 330  
331 -
349 +(((
332 332  **Command from RS485-BL to Sensor:**
351 +)))
333 333  
353 +(((
334 334  RS485-BL can send out pre-set max 15 strings via **AT+COMMAD1**, **ATCOMMAND2**,…, to **AT+COMMANDF** . All commands are of same grammar.
355 +)))
335 335  
336 -
357 +(((
337 337  **Handle return from sensors to RS485-BL**:
359 +)))
338 338  
361 +(((
339 339  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 +)))
340 340  
365 +* (((
366 +**AT+DATACUT**
367 +)))
341 341  
342 -* **AT+DATACUT**
343 -
369 +(((
344 344  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.
371 +)))
345 345  
373 +* (((
374 +**AT+SEARCH**
375 +)))
346 346  
347 -* **AT+SEARCH**
348 -
377 +(((
349 349  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 +)))
350 350  
351 -
381 +(((
352 352  **Define wait timeout:**
383 +)))
353 353  
385 +(((
354 354  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 +)))
355 355  
356 -
389 +(((
357 357  After we got the valid value from each RS485 commands, we need to combine them together with the command **AT+DATAUP**.
391 +)))
358 358  
359 -
360 360  **Examples:**
361 361  
362 362  Below are examples for the how above AT Commands works.
363 363  
364 -
365 365  **AT+COMMANDx : **This command will be sent to RS485/TTL devices during each sampling, Max command length is 14 bytes. The grammar is:
366 366  
399 +(% border="1" class="table-bordered" %)
367 367  |(((
368 368  **AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
369 369  
... ... @@ -376,9 +376,9 @@
376 376  
377 377  In the RS485-BL, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
378 378  
379 -
380 380  **AT+SEARCHx**: This command defines how to handle the return from AT+COMMANDx.
381 381  
414 +(% border="1" class="table-bordered" %)
382 382  |(((
383 383  **AT+SEARCHx=aa,xx xx xx xx xx**
384 384  
... ... @@ -396,7 +396,7 @@
396 396  
397 397  The valid data will be all bytes after 1E 56 34 , so it is 2e 30 58 5f 36 41 30 31 00 49
398 398  
399 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image013.png]]
432 +[[image:1652954654347-831.png]]
400 400  
401 401  
402 402  1. For a return string from AT+COMMAND1:  16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
... ... @@ -457,7 +457,7 @@
457 457  
458 458  
459 459  1.
460 -11.
493 +11.
461 461  111. Compose the uplink payload
462 462  
463 463  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.**
... ... @@ -521,8 +521,8 @@
521 521  
522 522  
523 523  
524 -1.
525 -11.
557 +1.
558 +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.
571 +1.
572 +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.
586 +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.
648 +1.
649 +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.
655 +1.
656 +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.
962 +1.
930 930  11. Buttons
931 931  
932 932  |**Button**|**Feature**
933 933  |**RST**|Reboot RS485-BL
934 934  
935 -1.
968 +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.
986 +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.
1006 +1.
974 974  11. LEDs
975 975  
976 976  |**LEDs**|**Feature**
977 977  |**LED1**|Blink when device transmit a packet.
978 978  
979 -1.
1012 +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.
1058 +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.
1077 +1.
1078 +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.
1153 +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.
1160 +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.
1177 +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.
1652954654347-831.png
Author
... ... @@ -1,0 +1,1 @@
1 +XWiki.Xiaoling
Size
... ... @@ -1,0 +1,1 @@
1 +138.7 KB
Content
1653266934636-343.png
Author
... ... @@ -1,0 +1,1 @@
1 +XWiki.Xiaoling
Size
... ... @@ -1,0 +1,1 @@
1 +176.5 KB
Content

Applications

Navigation

Copyright ©2010-2024 Dragino Technology Co., LTD. All rights reserved
Dragino Wiki v2.0