Last modified by Bei Jinggeng on 2025/01/16 11:36
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From version < 58.45 >
edited by Xiaoling
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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  )))
... ... @@ -92,6 +92,8 @@
92 92  * Automatic RF Sense and CAD with ultra-fast AFC.
93 93  * Packet engine up to 256 bytes with CRC
94 94  
98 +
99 +
95 95  == 1.3 Features ==
96 96  
97 97  * LoRaWAN Class A & Class C protocol (default Class C)
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103 103  * Support Modbus protocol
104 104  * Support Interrupt uplink (Since hardware version v1.2)
105 105  
111 +
112 +
106 106  == 1.4 Applications ==
107 107  
108 108  * Smart Buildings & Home Automation
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112 112  * Smart Cities
113 113  * Smart Factory
114 114  
122 +
123 +
115 115  == 1.5 Firmware Change log ==
116 116  
117 117  [[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
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180 180  
181 181  [[image:1653268227651-549.png||height="592" width="720"]]
182 182  
192 +
183 183  (((
184 184  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:
185 185  )))
186 186  
187 187  (((
188 -**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.
189 189  )))
190 190  
191 191  (((
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195 195  
196 196  [[image:1652953462722-299.png]]
197 197  
208 +
198 198  (((
199 199  (((
200 200  User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
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201 201  )))
202 202  
203 203  (((
204 -Add APP EUI in the application.
215 +**Add APP EUI in the application.**
205 205  )))
206 206  )))
207 207  
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217 217  
218 218  [[image:1652953542269-423.png||height="710" width="723"]]
219 219  
220 -Add APP KEY and DEV EUI
221 221  
232 +
233 +**Add APP KEY and DEV EUI**
234 +
222 222  [[image:1652953553383-907.png||height="514" width="724"]]
223 223  
224 224  
225 225  (((
226 -**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.
227 227  )))
228 228  
229 229  [[image:1652953568895-172.png||height="232" width="724"]]
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234 234  (((
235 235  (((
236 236  (((
237 -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.
238 238  )))
239 239  )))
240 240  
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310 310  )))
311 311  
312 312  
326 +
327 +
313 313  === 3.3.2 Configure sensors ===
314 314  
315 315  (((
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321 321  (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
322 322  |=(% style="width: 110px;" %)**AT Commands**|=(% style="width: 190px;" %)**Description**|=(% style="width: 190px;" %)**Example**
323 323  |AT+CFGDEV|(% style="width:110px" %)(((
339 +(((
324 324  This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
341 +)))
325 325  
343 +(((
326 326  AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
345 +)))
327 327  
347 +(((
328 328  mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
349 +)))
329 329  )))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
330 330  
331 331  
353 +
354 +
332 332  === 3.3.3 Configure read commands for each sampling ===
333 333  
334 334  (((
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341 341  During each sampling, the RS485-LN can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
342 342  
343 343  
344 -**Each RS485 commands include two parts:**
367 +(% style="color:#037691" %)**Each RS485 commands include two parts:**
345 345  
346 346  ~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.
347 347  
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356 356  Below are examples for the how above AT Commands works.
357 357  
358 358  
359 -**AT+COMMANDx : **This command will be sent to RS485 devices during each sampling, Max command length is 14 bytes. The grammar is:
382 +(% 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:
360 360  
361 361  (% border="1" style="background-color:#4bacc6; color:white; width:499px" %)
362 362  |(% style="width:496px" %)(((
363 -**AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
386 +(% style="color:#037691" %)**AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
364 364  
365 365  **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
366 366  
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372 372  In the RS485-LN, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
373 373  
374 374  
375 -**AT+DATACUTx : **This command defines how to handle the return from AT+COMMANDx, max return length is 45 bytes.
398 +(% style="color:#037691" %)**AT+DATACUTx **(%%)**: **This command defines how to handle the return from AT+COMMANDx, max return length is 45 bytes.
376 376  
377 377  (% border="1" style="background-color:#4bacc6; color:white; width:510px" %)
378 378  |(% style="width:510px" %)(((
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385 385  
386 386  **Examples:**
387 387  
388 -* Grab bytes:
411 +* (% style="color:#037691" %)**Grab bytes**
389 389  
390 390  [[image:image-20220602153621-1.png]]
391 391  
392 392  
393 -* Grab a section.
416 +* (% style="color:#037691" %)**Grab a section**
394 394  
395 395  [[image:image-20220602153621-2.png]]
396 396  
397 397  
398 -* Grab different sections.
421 +* (% style="color:#037691" %)**Grab different sections**
399 399  
400 400  [[image:image-20220602153621-3.png]]
401 401  
425 +
402 402  
403 403  )))
404 404  
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507 507  Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
508 508  
509 509  
510 -== 3.5 Configure RS485-BL via AT or Downlink ==
534 +== 3.5 Configure RS485-LN via AT or Downlink ==
511 511  
512 512  (((
513 513  User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
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673 673  ==== **Set Payload version** ====
674 674  
675 675  (((
676 -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.
677 677  )))
678 678  
679 679  * (((
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771 771  XX XX XX XX: AT+COMMAND or AT+DATACUT command
772 772  )))
773 773  * (((
774 -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.
775 775  )))
776 776  
777 777  (((
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1177 1177  )))
1178 1178  
1179 1179  (((
1204 +(((
1180 1180  (% 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.
1181 1181  )))
1207 +)))
1182 1182  
1183 1183  
1184 1184  == 3.7 Buttons ==
1185 1185  
1186 1186  
1187 -(% border="1" cellspacing="10" style="background-color:#f7faff; width:400px" %)
1188 -|=(% style="width: 50px;" %)**Button**|=(% style="width: 350px;" %)**Feature**
1189 -|(% 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**
1190 -|(% style="width:50px" %)**RST**|(% style="width:350px" %)Reboot RS485
1191 -|(% 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"]]
1192 1192  
1193 -
1194 1194  == 3.8 LEDs ==
1195 1195  
1196 1196  
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1209 1209  == 5.1 Access AT Command ==
1210 1210  
1211 1211  (((
1212 -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.
1213 1213  )))
1214 1214  
1215 1215  [[image:1654162355560-817.png]]
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1216 1216  
1217 1217  
1218 1218  (((
1219 -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:
1220 1220  )))
1221 1221  
1222 1222  [[image:1654162368066-342.png]]
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1250 1250  )))
1251 1251  
1252 1252  
1278 +(((
1253 1253  If device already joined network:
1280 +)))
1254 1254  
1255 1255  (% class="box infomessage" %)
1256 1256  (((
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1289 1289  
1290 1290  (% style="color:red" %)**Note:**
1291 1291  
1319 +(((
1292 1292  (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1293 1293  2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1294 1294  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.
1295 1295  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 +)))
1296 1296  
1297 1297  [[image:1654162478620-421.png]]
1298 1298  
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1321 1321  
1322 1322  [[image:1654162535040-878.png]]
1323 1323  
1353 +(((
1324 1324  **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 +)))
1325 1325  
1357 +(((
1326 1326  **Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
1359 +)))
1327 1327  
1361 +(((
1328 1328  **Step3: **Open flashloader; choose the correct COM port to update.
1363 +)))
1329 1329  
1330 1330  (((
1331 1331  (((
1367 +(((
1332 1332  (% 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.
1333 1333  )))
1334 1334  )))
1371 +)))
1335 1335  
1336 1336  
1337 1337  [[image:image-20220602175818-12.png]]
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1353 1353  User can follow the introduction for [[how to upgrade image>>||anchor="H6.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
1354 1354  
1355 1355  
1356 -== 6.3 How many RS485-Slave can RS485-BL connects? ==
1393 +== 6.3 How many RS485-Slave can RS485-LN connects? ==
1357 1357  
1358 -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"]].
1359 1359  
1360 1360  
1361 1361  == 6.4 Compatible question to ChirpStack and TTI LoRaWAN server ? ==

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