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1 -RS485-BL – Waterproof RS485 to LoRaWAN Converter
1 +RS485-LN – RS485 to LoRaWAN Converter
Content
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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  
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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:**
... ... @@ -167,19 +167,31 @@
167 167  
168 168  [[image:1652953414711-647.png||height="337" width="723"]]
169 169  
169 +(((
170 170  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 +)))
171 171  
173 +(((
172 172  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 +)))
173 173  
177 +(((
174 174  **Step 1**: Create a device in TTN V3 with the OTAA keys from RS485-BL.
179 +)))
175 175  
181 +(((
176 176  Each RS485-BL is shipped with a sticker with unique device EUI:
183 +)))
177 177  
178 178  [[image:1652953462722-299.png]]
179 179  
187 +(((
180 180  User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
189 +)))
181 181  
191 +(((
182 182  Add APP EUI in the application.
193 +)))
183 183  
184 184  
185 185  
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207 207  
208 208  [[image:1652953568895-172.png||height="232" width="724"]]
209 209  
221 +== 3.3 Configure Commands to read data ==
210 210  
211 -
212 -
213 -1.
214 -11. Configure Commands to read data
215 -
223 +(((
216 216  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 +)))
217 217  
227 +=== 3.3.1 onfigure UART settings for RS485 or TTL communication ===
218 218  
219 -1.
220 -11.
221 -111. Configure UART settings for RS485 or TTL communication
222 -
223 223  RS485-BL can connect to either RS485 sensors or TTL sensor. User need to specify what type of sensor need to connect.
224 224  
225 -1. RS485-MODBUS mode:
231 +**~1. RS485-MODBUS mode:**
226 226  
227 227  AT+MOD=1 ~/~/ Support RS485-MODBUS type sensors. User can connect multiply RS485 , Modbus sensors to the A / B pins.
228 228  
235 +**2. TTL mode:**
229 229  
230 -1. TTL mode:
231 -
232 232  AT+MOD=2 ~/~/ Support TTL Level sensors, User can connect one TTL Sensor to the TXD/RXD/GND pins.
233 233  
234 -
235 235  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.
236 236  
237 -
238 -|**AT Commands**|**Description**|**Example**
239 -|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 +(((
240 240  AT+BAUDR=9600
256 +)))
241 241  
258 +(((
242 242  Options: (1200,2400,4800,14400,19200,115200)
243 243  )))
244 -|AT+PARITY|(((
261 +)))
262 +|(((
263 +AT+PARITY
264 +)))|(% style="width:285px" %)(((
265 +(((
245 245  Set UART parity (for RS485 connection)
267 +)))
246 246  
269 +(((
247 247  Default Value is: no parity.
248 -)))|(((
271 +)))
272 +)))|(% style="width:347px" %)(((
273 +(((
249 249  AT+PARITY=0
275 +)))
250 250  
277 +(((
251 251  Option: 0: no parity, 1: odd parity, 2: even parity
252 252  )))
253 -|AT+STOPBIT|(((
280 +)))
281 +|(((
282 +AT+STOPBIT
283 +)))|(% style="width:285px" %)(((
284 +(((
254 254  Set serial stopbit (for RS485 connection)
286 +)))
255 255  
288 +(((
256 256  Default Value is: 1bit.
257 -)))|(((
290 +)))
291 +)))|(% style="width:347px" %)(((
292 +(((
258 258  AT+STOPBIT=0 for 1bit
294 +)))
259 259  
296 +(((
260 260  AT+STOPBIT=1 for 1.5 bit
298 +)))
261 261  
300 +(((
262 262  AT+STOPBIT=2 for 2 bits
263 263  )))
303 +)))
264 264  
305 +=== 3.3.2 Configure sensors ===
265 265  
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 +)))
266 266  
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 +)))
267 267  
268 -1.
269 -11.
270 -111. Configure sensors
271 -
272 -Some sensors might need to configure before normal operation. User can configure such sensor via PC or through RS485-BL AT Commands AT+CFGDEV.
273 -
274 -
275 -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.
276 -
277 -|**AT Commands**|**Description**|**Example**
278 -|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" %)(((
279 279  This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
280 280  
281 -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,
282 282  
283 -m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
284 -)))|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
285 285  
286 286  Detail of AT+CFGDEV command see [[AT+CFGDEV detail>>path:#AT_CFGDEV]].
287 287  
327 +=== 3.3.3 Configure read commands for each sampling ===
288 288  
289 -
290 -
291 -
292 -1.
293 -11.
294 -111. Configure read commands for each sampling
295 -
329 +(((
296 296  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 +)))
297 297  
298 -
333 +(((
299 299  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 +)))
300 300  
301 -
337 +(((
302 302  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 +)))
303 303  
304 -
341 +(((
305 305  This section describes how to achieve above goals.
343 +)))
306 306  
307 -
345 +(((
308 308  During each sampling, the RS485-BL can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
347 +)))
309 309  
310 -
349 +(((
311 311  **Command from RS485-BL to Sensor:**
351 +)))
312 312  
353 +(((
313 313  RS485-BL can send out pre-set max 15 strings via **AT+COMMAD1**, **ATCOMMAND2**,…, to **AT+COMMANDF** . All commands are of same grammar.
355 +)))
314 314  
315 -
357 +(((
316 316  **Handle return from sensors to RS485-BL**:
359 +)))
317 317  
361 +(((
318 318  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 +)))
319 319  
365 +* (((
366 +**AT+DATACUT**
367 +)))
320 320  
321 -* **AT+DATACUT**
322 -
369 +(((
323 323  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 +)))
324 324  
373 +* (((
374 +**AT+SEARCH**
375 +)))
325 325  
326 -* **AT+SEARCH**
327 -
377 +(((
328 328  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 +)))
329 329  
330 -
381 +(((
331 331  **Define wait timeout:**
383 +)))
332 332  
385 +(((
333 333  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 +)))
334 334  
335 -
389 +(((
336 336  After we got the valid value from each RS485 commands, we need to combine them together with the command **AT+DATAUP**.
391 +)))
337 337  
338 -
339 339  **Examples:**
340 340  
341 341  Below are examples for the how above AT Commands works.
342 342  
343 -
344 344  **AT+COMMANDx : **This command will be sent to RS485/TTL devices during each sampling, Max command length is 14 bytes. The grammar is:
345 345  
399 +(% border="1" class="table-bordered" %)
346 346  |(((
347 347  **AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
348 348  
... ... @@ -355,9 +355,9 @@
355 355  
356 356  In the RS485-BL, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
357 357  
358 -
359 359  **AT+SEARCHx**: This command defines how to handle the return from AT+COMMANDx.
360 360  
414 +(% border="1" class="table-bordered" %)
361 361  |(((
362 362  **AT+SEARCHx=aa,xx xx xx xx xx**
363 363  
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375 375  
376 376  The valid data will be all bytes after 1E 56 34 , so it is 2e 30 58 5f 36 41 30 31 00 49
377 377  
378 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image013.png]]
432 +[[image:1652954654347-831.png]]
379 379  
380 380  
381 381  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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436 436  
437 437  
438 438  1.
439 -11.
493 +11.
440 440  111. Compose the uplink payload
441 441  
442 442  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.**
... ... @@ -500,8 +500,8 @@
500 500  
501 501  
502 502  
503 -1.
504 -11.
557 +1.
558 +11.
505 505  111. Uplink on demand
506 506  
507 507  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.
... ... @@ -514,8 +514,8 @@
514 514  
515 515  
516 516  
517 -1.
518 -11.
571 +1.
572 +11.
519 519  111. Uplink on Interrupt
520 520  
521 521  Put the interrupt sensor between 3.3v_out and GPIO ext.[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image022.png]]
... ... @@ -529,7 +529,7 @@
529 529  AT+INTMOD=3  Interrupt trigger by rising edge.
530 530  
531 531  
532 -1.
586 +1.
533 533  11. Uplink Payload
534 534  
535 535  |**Size(bytes)**|**2**|**1**|**Length depends on the return from the commands**
... ... @@ -591,15 +591,15 @@
591 591  
592 592  * **Sensor Related Commands**: These commands are special designed for RS485-BL.  User can see these commands below:
593 593  
594 -1.
595 -11.
648 +1.
649 +11.
596 596  111. Common Commands:
597 597  
598 598  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]]
599 599  
600 600  
601 -1.
602 -11.
655 +1.
656 +11.
603 603  111. Sensor related commands:
604 604  
605 605  ==== Choose Device Type (RS485 or TTL) ====
... ... @@ -905,13 +905,13 @@
905 905  
906 906  
907 907  
908 -1.
962 +1.
909 909  11. Buttons
910 910  
911 911  |**Button**|**Feature**
912 912  |**RST**|Reboot RS485-BL
913 913  
914 -1.
968 +1.
915 915  11. +3V3 Output
916 916  
917 917  RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor.
... ... @@ -929,7 +929,7 @@
929 929  By default, the AT+3V3T=0. This is a special case, means the +3V3 output is always on at any time
930 930  
931 931  
932 -1.
986 +1.
933 933  11. +5V Output
934 934  
935 935  RS485-BL has a Controllable +5V output, user can use this output to power external sensor.
... ... @@ -949,13 +949,13 @@
949 949  
950 950  
951 951  
952 -1.
1006 +1.
953 953  11. LEDs
954 954  
955 955  |**LEDs**|**Feature**
956 956  |**LED1**|Blink when device transmit a packet.
957 957  
958 -1.
1012 +1.
959 959  11. Switch Jumper
960 960  
961 961  |**Switch Jumper**|**Feature**
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1001 1001  
1002 1002  
1003 1003  
1004 -1.
1058 +1.
1005 1005  11. Common AT Command Sequence
1006 1006  111. Multi-channel ABP mode (Use with SX1301/LG308)
1007 1007  
... ... @@ -1020,8 +1020,8 @@
1020 1020  
1021 1021  ATZ
1022 1022  
1023 -1.
1024 -11.
1077 +1.
1078 +11.
1025 1025  111. Single-channel ABP mode (Use with LG01/LG02)
1026 1026  
1027 1027  AT+FDR   Reset Parameters to Factory Default, Keys Reserve
... ... @@ -1096,7 +1096,7 @@
1096 1096  [[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]]
1097 1097  
1098 1098  
1099 -1.
1153 +1.
1100 1100  11. How to change the LoRa Frequency Bands/Region?
1101 1101  
1102 1102  User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download.
... ... @@ -1103,7 +1103,7 @@
1103 1103  
1104 1104  
1105 1105  
1106 -1.
1160 +1.
1107 1107  11. How many RS485-Slave can RS485-BL connects?
1108 1108  
1109 1109  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]].
... ... @@ -1120,7 +1120,7 @@
1120 1120  
1121 1121  
1122 1122  
1123 -1.
1177 +1.
1124 1124  11. Why I can’t join TTN V3 in US915 /AU915 bands?
1125 1125  
1126 1126  It might about the channels mapping. Please see for detail.
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