Last modified by Bei Jinggeng on 2025/01/16 11:36
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From version < 58.40 >
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 +92,9 @@
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 +
100 +
95 95  == 1.3 Features ==
96 96  
97 97  * LoRaWAN Class A & Class C protocol (default Class C)
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180 180  
181 181  [[image:1653268227651-549.png||height="592" width="720"]]
182 182  
189 +
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.
195 +(% style="color:blue" %)**Step 1**(%%): Create a device in TTN V3 with the OTAA keys from RS485-LN.
189 189  )))
190 190  
191 191  (((
... ... @@ -195,6 +195,7 @@
195 195  
196 196  [[image:1652953462722-299.png]]
197 197  
205 +
198 198  (((
199 199  (((
200 200  User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
... ... @@ -201,7 +201,7 @@
201 201  )))
202 202  
203 203  (((
204 -Add APP EUI in the application.
212 +**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  
229 +
230 +**Add APP KEY and DEV EUI**
231 +
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.
236 +(% 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.
247 +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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309 309  )))
310 310  )))
311 311  
322 +
312 312  === 3.3.2 Configure sensors ===
313 313  
314 314  (((
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320 320  (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
321 321  |=(% style="width: 110px;" %)**AT Commands**|=(% style="width: 190px;" %)**Description**|=(% style="width: 190px;" %)**Example**
322 322  |AT+CFGDEV|(% style="width:110px" %)(((
334 +(((
323 323  This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
336 +)))
324 324  
338 +(((
325 325  AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
340 +)))
326 326  
342 +(((
327 327  mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
344 +)))
328 328  )))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
329 329  
347 +
330 330  === 3.3.3 Configure read commands for each sampling ===
331 331  
332 332  (((
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339 339  During each sampling, the RS485-LN can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
340 340  
341 341  
342 -**Each RS485 commands include two parts:**
360 +(% style="color:#037691" %)**Each RS485 commands include two parts:**
343 343  
344 344  ~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.
345 345  
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354 354  Below are examples for the how above AT Commands works.
355 355  
356 356  
357 -**AT+COMMANDx : **This command will be sent to RS485 devices during each sampling, Max command length is 14 bytes. The grammar is:
375 +(% 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:
358 358  
359 359  (% border="1" style="background-color:#4bacc6; color:white; width:499px" %)
360 360  |(% style="width:496px" %)(((
361 -**AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
379 +(% style="color:#037691" %)**AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
362 362  
363 363  **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
364 364  
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370 370  In the RS485-LN, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
371 371  
372 372  
373 -**AT+DATACUTx : **This command defines how to handle the return from AT+COMMANDx, max return length is 45 bytes.
391 +(% style="color:#037691" %)**AT+DATACUTx **(%%)**: **This command defines how to handle the return from AT+COMMANDx, max return length is 45 bytes.
374 374  
375 375  (% border="1" style="background-color:#4bacc6; color:white; width:510px" %)
376 376  |(% style="width:510px" %)(((
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383 383  
384 384  **Examples:**
385 385  
386 -* Grab bytes:
404 +* (% style="color:#037691" %)**Grab bytes**
387 387  
388 388  [[image:image-20220602153621-1.png]]
389 389  
390 390  
391 -* Grab a section.
409 +* (% style="color:#037691" %)**Grab a section**
392 392  
393 393  [[image:image-20220602153621-2.png]]
394 394  
395 395  
396 -* Grab different sections.
414 +* (% style="color:#037691" %)**Grab different sections**
397 397  
398 398  [[image:image-20220602153621-3.png]]
399 399  
418 +
400 400  
401 401  )))
402 402  
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505 505  Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
506 506  
507 507  
508 -== 3.5 Configure RS485-BL via AT or Downlink ==
527 +== 3.5 Configure RS485-LN via AT or Downlink ==
509 509  
510 510  (((
511 511  User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
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671 671  ==== **Set Payload version** ====
672 672  
673 673  (((
674 -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.
693 +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.
675 675  )))
676 676  
677 677  * (((
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769 769  XX XX XX XX: AT+COMMAND or AT+DATACUT command
770 770  )))
771 771  * (((
772 -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.
791 +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.
773 773  )))
774 774  
775 775  (((
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1104 1104  )))
1105 1105  
1106 1106  (% border="1" cellspacing="10" style="background-color:#ffffcc; width:500px" %)
1107 -|=(% style="width: 161px;" %)(((
1108 -**Command example:**
1109 -)))|=(% style="width: 337px;" %)(((
1126 +|=(% style="width: 100px;" %)(((
1127 +**Command example**
1128 +)))|=(% style="width: 400px;" %)(((
1110 1110  **Function**
1111 1111  )))
1112 -|(% style="width:161px" %)(((
1131 +|(% style="width:100px" %)(((
1113 1113  AT+RXMODE=1,10
1114 -)))|(% style="width:337px" %)(((
1133 +)))|(% style="width:400px" %)(((
1115 1115  Enable listening mode 1, if RS485-LN has received more than 10 RS485 commands from the network. RS485-LN will send these commands via LoRaWAN uplinks.
1116 1116  )))
1117 -|(% style="width:161px" %)(((
1136 +|(% style="width:100px" %)(((
1118 1118  AT+RXMODE=2,500
1119 -)))|(% style="width:337px" %)(((
1138 +)))|(% style="width:400px" %)(((
1120 1120  Enable listening mode 2, RS485-LN will capture and send a 500ms content once from the first detect of character. Max value is 65535 ms
1121 1121  )))
1122 -|(% style="width:161px" %)(((
1141 +|(% style="width:100px" %)(((
1123 1123  AT+RXMODE=0,0
1124 -)))|(% style="width:337px" %)(((
1143 +)))|(% style="width:400px" %)(((
1125 1125  Disable listening mode. This is the default settings.
1126 1126  )))
1127 -|(% style="width:161px" %)(((
1146 +|(% style="width:100px" %)(((
1128 1128  
1129 -)))|(% style="width:337px" %)(((
1148 +)))|(% style="width:400px" %)(((
1130 1130  A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
1131 1131  )))
1132 1132  
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1175 1175  )))
1176 1176  
1177 1177  (((
1197 +(((
1178 1178  (% 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.
1179 1179  )))
1200 +)))
1180 1180  
1181 1181  
1182 1182  == 3.7 Buttons ==
1183 1183  
1184 1184  
1185 -(% border="1" cellspacing="10" style="background-color:#f7faff; width:400px" %)
1186 -|=(% style="width: 50px;" %)**Button**|=(% style="width: 350px;" %)**Feature**
1187 -|(% 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**
1188 -|(% style="width:50px" %)**RST**|(% style="width:350px" %)Reboot RS485
1189 -|(% style="width:50px" %)**PRO**|(% style="width:350px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1206 +(% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1207 +|=(% style="width: 50px;" %)**Button**|=(% style="width: 361px;" %)**Feature**
1208 +|(% 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**
1209 +|(% style="width:50px" %)**RST**|(% style="width:361px" %)Reboot RS485
1210 +|(% style="width:50px" %)**PRO**|(% style="width:361px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1190 1190  
1191 1191  == 3.8 LEDs ==
1192 1192  
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1196 1196  |**PWR**|Always on if there is power
1197 1197  |**SYS**|After device is powered on, the SYS will (% style="color:green" %)**fast blink in GREEN**(%%) for 5 times, means RS485-LN start to join LoRaWAN network. If join success, SYS will be (% style="color:green" %)**on GREEN for 5 seconds** (%%)**. **SYS will (% style="color:green" %)**blink Blue**(%%) on every upload and (% style="color:green" %)**blink Green**(%%) once receive a downlink message.
1198 1198  
1199 -
1200 1200  = 4. Case Study =
1201 1201  
1202 1202  User can check this URL for some case studies: [[APP RS485 COMMUNICATE WITH SENSORS>>doc:Main.Application Note \: Communicate with Different Sensors ----- RS485-LN RS485-BL.WebHome]]
... ... @@ -1207,7 +1207,7 @@
1207 1207  == 5.1 Access AT Command ==
1208 1208  
1209 1209  (((
1210 -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.
1230 +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.
1211 1211  )))
1212 1212  
1213 1213  [[image:1654162355560-817.png]]
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1214 1214  
1215 1215  
1216 1216  (((
1217 -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:
1237 +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:
1218 1218  )))
1219 1219  
1220 1220  [[image:1654162368066-342.png]]
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1248 1248  )))
1249 1249  
1250 1250  
1271 +(((
1251 1251  If device already joined network:
1273 +)))
1252 1252  
1253 1253  (% class="box infomessage" %)
1254 1254  (((
... ... @@ -1287,10 +1287,12 @@
1287 1287  
1288 1288  (% style="color:red" %)**Note:**
1289 1289  
1312 +(((
1290 1290  (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1291 1291  2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1292 1292  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.
1293 1293  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
1317 +)))
1294 1294  
1295 1295  [[image:1654162478620-421.png]]
1296 1296  
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1319 1319  
1320 1320  [[image:1654162535040-878.png]]
1321 1321  
1346 +(((
1322 1322  **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]].
1348 +)))
1323 1323  
1350 +(((
1324 1324  **Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
1352 +)))
1325 1325  
1354 +(((
1326 1326  **Step3: **Open flashloader; choose the correct COM port to update.
1356 +)))
1327 1327  
1328 1328  (((
1329 1329  (((
1360 +(((
1330 1330  (% 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.
1331 1331  )))
1332 1332  )))
1364 +)))
1333 1333  
1334 1334  
1335 1335  [[image:image-20220602175818-12.png]]
... ... @@ -1351,9 +1351,9 @@
1351 1351  User can follow the introduction for [[how to upgrade image>>||anchor="H6.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
1352 1352  
1353 1353  
1354 -== 6.3 How many RS485-Slave can RS485-BL connects? ==
1386 +== 6.3 How many RS485-Slave can RS485-LN connects? ==
1355 1355  
1356 -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"]].
1388 +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"]].
1357 1357  
1358 1358  
1359 1359  == 6.4 Compatible question to ChirpStack and TTI LoRaWAN server ? ==

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