Last modified by Bei Jinggeng on 2025/01/16 11:36
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Title
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1 -RS485-LN – RS485 to LoRaWAN Converter
1 +RS485-LN – RS485 to LoRaWAN Converter User Manual
Content
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3 3  
4 4  
5 5  
6 -**RS485-LN – RS485 to LoRaWAN Converter User Manual**
7 7  
8 8  
9 9  
... ... @@ -25,6 +25,8 @@
25 25  (((
26 26  (((
27 27  (((
27 +
28 +
28 28  The Dragino RS485-LN is a (% style="color:blue" %)**RS485 to LoRaWAN Converter**(%%). It converts the RS485 signal into LoRaWAN wireless signal which simplify the IoT installation and reduce the installation/maintaining cost.
29 29  )))
30 30  )))
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48 48  
49 49  (((
50 50  (% style="color:blue" %)**Demo Dashboard for RS485-LN**(%%) connect to two energy meters: [[https:~~/~~/app.datacake.de/dashboard/d/58844a26-378d-4c5a-aaf5-b5b5b153447a>>url:https://app.datacake.de/dashboard/d/58844a26-378d-4c5a-aaf5-b5b5b153447a]]
52 +
53 +
51 51  )))
52 52  )))
53 53  )))
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93 93  * Packet engine up to 256 bytes with CRC
94 94  
95 95  
99 +
96 96  == 1.3 Features ==
97 97  
98 98  * LoRaWAN Class A & Class C protocol (default Class C)
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105 105  * Support Interrupt uplink (Since hardware version v1.2)
106 106  
107 107  
112 +
108 108  == 1.4 Applications ==
109 109  
110 110  * Smart Buildings & Home Automation
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115 115  * Smart Factory
116 116  
117 117  
123 +
118 118  == 1.5 Firmware Change log ==
119 119  
120 120  [[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
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183 183  
184 184  [[image:1653268227651-549.png||height="592" width="720"]]
185 185  
192 +
186 186  (((
187 187  The LG308 is already set to connect to [[TTN V3 network >>path:https://www.thethingsnetwork.org/]]. So what we need to now is only configure the TTN V3:
188 188  )))
189 189  
190 190  (((
191 -**Step 1**: Create a device in TTN V3 with the OTAA keys from RS485-LN.
198 +(% style="color:blue" %)**Step 1**(%%): Create a device in TTN V3 with the OTAA keys from RS485-LN.
192 192  )))
193 193  
194 194  (((
... ... @@ -198,6 +198,7 @@
198 198  
199 199  [[image:1652953462722-299.png]]
200 200  
208 +
201 201  (((
202 202  (((
203 203  User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
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204 204  )))
205 205  
206 206  (((
207 -Add APP EUI in the application.
215 +**Add APP EUI in the application.**
208 208  )))
209 209  )))
210 210  
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220 220  
221 221  [[image:1652953542269-423.png||height="710" width="723"]]
222 222  
223 -Add APP KEY and DEV EUI
224 224  
232 +
233 +**Add APP KEY and DEV EUI**
234 +
225 225  [[image:1652953553383-907.png||height="514" width="724"]]
226 226  
227 227  
228 228  (((
229 -**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.
239 +(% style="color:blue" %)**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.
230 230  )))
231 231  
232 232  [[image:1652953568895-172.png||height="232" width="724"]]
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237 237  (((
238 238  (((
239 239  (((
240 -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>>||anchor="H3.5ConfigureRS485-BLviaATorDownlink"]] or LoRaWAN Downlink Command to configure what commands RS485-LN should send for each sampling and how to handle the return from RS485 devices.
250 +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>>||anchor="H3.5ConfigureRS485-LNviaATorDownlink"]] or LoRaWAN Downlink Command to configure what commands RS485-LN should send for each sampling and how to handle the return from RS485 devices.
241 241  )))
242 242  )))
243 243  
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314 314  
315 315  
316 316  
327 +
317 317  === 3.3.2 Configure sensors ===
318 318  
319 319  (((
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325 325  (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
326 326  |=(% style="width: 110px;" %)**AT Commands**|=(% style="width: 190px;" %)**Description**|=(% style="width: 190px;" %)**Example**
327 327  |AT+CFGDEV|(% style="width:110px" %)(((
339 +(((
328 328  This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
341 +)))
329 329  
343 +(((
330 330  AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
345 +)))
331 331  
347 +(((
332 332  mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
349 +)))
333 333  )))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
334 334  
335 335  
336 336  
354 +
337 337  === 3.3.3 Configure read commands for each sampling ===
338 338  
339 339  (((
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346 346  During each sampling, the RS485-LN can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
347 347  
348 348  
349 -**Each RS485 commands include two parts:**
367 +(% style="color:#037691" %)**Each RS485 commands include two parts:**
350 350  
351 351  ~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.
352 352  
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357 357  
358 358  After we got the valid value from each RS485 commands, we need to combine them together with the command **AT+DATAUP**.
359 359  
360 -
361 361  Below are examples for the how above AT Commands works.
362 362  
363 363  
364 -**AT+COMMANDx : **This command will be sent to RS485 devices during each sampling, Max command length is 14 bytes. The grammar is:
381 +(% style="color:#037691" %)**AT+COMMANDx **(%%)**: **This command will be sent to RS485 devices during each sampling, Max command length is 14 bytes. The grammar is:
365 365  
366 366  (% border="1" style="background-color:#4bacc6; color:white; width:499px" %)
367 367  |(% style="width:496px" %)(((
368 -**AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
385 +(% style="color:#037691" %)**AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
369 369  
370 370  **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
371 371  
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377 377  In the RS485-LN, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
378 378  
379 379  
380 -**AT+DATACUTx : **This command defines how to handle the return from AT+COMMANDx, max return length is 45 bytes.
397 +(% style="color:#037691" %)**AT+DATACUTx **(%%)**: **This command defines how to handle the return from AT+COMMANDx, max return length is 45 bytes.
381 381  
382 382  (% border="1" style="background-color:#4bacc6; color:white; width:510px" %)
383 383  |(% style="width:510px" %)(((
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390 390  
391 391  **Examples:**
392 392  
393 -* Grab bytes:
410 +* (% style="color:#037691" %)**Grab bytes**
394 394  
395 395  [[image:image-20220602153621-1.png]]
396 396  
397 397  
398 -* Grab a section.
415 +* (% style="color:#037691" %)**Grab a section**
399 399  
400 400  [[image:image-20220602153621-2.png]]
401 401  
402 402  
403 -* Grab different sections.
420 +* (% style="color:#037691" %)**Grab different sections**
404 404  
405 405  [[image:image-20220602153621-3.png]]
406 406  
424 +
407 407  
408 408  )))
409 409  
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483 483  [[image:1654157178836-407.png]]
484 484  
485 485  
504 +
486 486  === 3.3.5 Uplink on demand ===
487 487  
488 488  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.
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512 512  Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
513 513  
514 514  
515 -== 3.5 Configure RS485-BL via AT or Downlink ==
534 +== 3.5 Configure RS485-LN via AT or Downlink ==
516 516  
517 517  (((
518 518  User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
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678 678  ==== **Set Payload version** ====
679 679  
680 680  (((
681 -This is the first byte of the uplink payload. RS485-BL can connect to different sensors. User can set the PAYVER field to tell server how to decode the current payload.
700 +This is the first byte of the uplink payload. RS485-LN can connect to different sensors. User can set the PAYVER field to tell server how to decode the current payload.
682 682  )))
683 683  
684 684  * (((
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776 776  XX XX XX XX: AT+COMMAND or AT+DATACUT command
777 777  )))
778 778  * (((
779 -YY:  If YY=0, RS485-BL will execute the downlink command without uplink; if YY=1, RS485-LN will execute an uplink after got this command.
798 +YY:  If YY=0, RS485-LN will execute the downlink command without uplink; if YY=1, RS485-LN will execute an uplink after got this command.
780 780  )))
781 781  
782 782  (((
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1182 1182  )))
1183 1183  
1184 1184  (((
1204 +(((
1185 1185  (% style="color:red" %)Notice: Listening mode can work with the default polling mode of RS485-LN. When RS485-LN is in to send the RS485 commands (from AT+COMMANDx), the listening mode will be interrupt for a while.
1186 1186  )))
1207 +)))
1187 1187  
1188 1188  
1189 1189  == 3.7 Buttons ==
1190 1190  
1191 1191  
1192 -(% border="1" cellspacing="10" style="background-color:#f7faff; width:400px" %)
1193 -|=(% style="width: 50px;" %)**Button**|=(% style="width: 350px;" %)**Feature**
1194 -|(% style="width:50px" %)**ACT**|(% style="width:350px" %)If RS485 joined in network, press this button for more than 1 second, RS485 will upload a packet, and the SYS LED will give a (% style="color:blue" %)**Blue blink**
1195 -|(% style="width:50px" %)**RST**|(% style="width:350px" %)Reboot RS485
1196 -|(% style="width:50px" %)**PRO**|(% style="width:350px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1213 +(% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1214 +|=(% style="width: 50px;" %)**Button**|=(% style="width: 361px;" %)**Feature**
1215 +|(% style="width:50px" %)**ACT**|(% style="width:361px" %)If RS485 joined in network, press this button for more than 1 second, RS485 will upload a packet, and the SYS LED will give a (% style="color:blue" %)**Blue blink**
1216 +|(% style="width:50px" %)**RST**|(% style="width:361px" %)Reboot RS485
1217 +|(% style="width:50px" %)**PRO**|(% style="width:361px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1197 1197  
1198 1198  == 3.8 LEDs ==
1199 1199  
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1213 1213  == 5.1 Access AT Command ==
1214 1214  
1215 1215  (((
1216 -RS485-BL supports AT Command set. User can use a USB to TTL adapter plus the 3.5mm Program Cable to connect to RS485-BL to use AT command, as below.
1237 +RS485-LN supports AT Command set. User can use a USB to TTL adapter plus the 3.5mm Program Cable to connect to RS485-LN to use AT command, as below.
1217 1217  )))
1218 1218  
1219 1219  [[image:1654162355560-817.png]]
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1220 1220  
1221 1221  
1222 1222  (((
1223 -In PC, User needs to set (% style="color:blue" %)**serial tool**(%%)(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600**(%%) to access to access serial console of RS485-BL. The default password is 123456. Below is the output for reference:
1244 +In PC, User needs to set (% style="color:blue" %)**serial tool**(%%)(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600**(%%) to access to access serial console of RS485-LN. The default password is 123456. Below is the output for reference:
1224 1224  )))
1225 1225  
1226 1226  [[image:1654162368066-342.png]]
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1254 1254  )))
1255 1255  
1256 1256  
1278 +(((
1257 1257  If device already joined network:
1280 +)))
1258 1258  
1259 1259  (% class="box infomessage" %)
1260 1260  (((
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1293 1293  
1294 1294  (% style="color:red" %)**Note:**
1295 1295  
1319 +(((
1296 1296  (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1297 1297  2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1298 1298  3. Make sure SF / bandwidth setting in LG01/LG02 match the settings of AT+DR. refer [[this link>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.
1299 1299  4. The command AT+RX2FQ and AT+RX2DR is to let downlink work. to set the correct parameters, user can check the actually downlink parameters to be used. As below. Which shows the RX2FQ should use 868400000 and RX2DR should be 5
1324 +)))
1300 1300  
1301 1301  [[image:1654162478620-421.png]]
1302 1302  
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1325 1325  
1326 1326  [[image:1654162535040-878.png]]
1327 1327  
1353 +(((
1328 1328  **Step1:** Download [[flash loader>>url:https://www.st.com/content/st_com/en/products/development-tools/software-development-tools/stm32-software-development-tools/stm32-programmers/flasher-stm32.html]].
1355 +)))
1329 1329  
1357 +(((
1330 1330  **Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
1359 +)))
1331 1331  
1361 +(((
1332 1332  **Step3: **Open flashloader; choose the correct COM port to update.
1363 +)))
1333 1333  
1334 1334  (((
1335 1335  (((
1367 +(((
1336 1336  (% style="color:blue" %) Hold down the PRO button and then momentarily press the RST reset button and the SYS led will change from OFF to ON, While SYS LED is RED ON, it means the RS485-LN is ready to be program.
1337 1337  )))
1338 1338  )))
1371 +)))
1339 1339  
1340 1340  
1341 1341  [[image:image-20220602175818-12.png]]
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1357 1357  User can follow the introduction for [[how to upgrade image>>||anchor="H6.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
1358 1358  
1359 1359  
1360 -== 6.3 How many RS485-Slave can RS485-BL connects? ==
1393 +== 6.3 How many RS485-Slave can RS485-LN connects? ==
1361 1361  
1362 -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>>||anchor="H3.3.3Configurereadcommandsforeachsampling"]].
1395 +The RS485-LN can support max 32 RS485 devices. Each uplink command of RS485-LN can support max 16 different RS485 command. So RS485-LN 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>>||anchor="H3.3.3Configurereadcommandsforeachsampling"]].
1363 1363  
1364 1364  
1365 1365  == 6.4 Compatible question to ChirpStack and TTI LoRaWAN server ? ==

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