Last modified by Bei Jinggeng on 2025/01/16 11:36
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From version < 58.42 >
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  )))
... ... @@ -93,6 +93,8 @@
93 93  * Packet engine up to 256 bytes with CRC
94 94  
95 95  
99 +
100 +
96 96  == 1.3 Features ==
97 97  
98 98  * LoRaWAN Class A & Class C protocol (default Class C)
... ... @@ -104,7 +104,6 @@
104 104  * Support Modbus protocol
105 105  * Support Interrupt uplink (Since hardware version v1.2)
106 106  
107 -
108 108  == 1.4 Applications ==
109 109  
110 110  * Smart Buildings & Home Automation
... ... @@ -114,7 +114,6 @@
114 114  * Smart Cities
115 115  * Smart Factory
116 116  
117 -
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/]]
... ... @@ -183,12 +183,13 @@
183 183  
184 184  [[image:1653268227651-549.png||height="592" width="720"]]
185 185  
189 +
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.
195 +(% style="color:blue" %)**Step 1**(%%): Create a device in TTN V3 with the OTAA keys from RS485-LN.
192 192  )))
193 193  
194 194  (((
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198 198  
199 199  [[image:1652953462722-299.png]]
200 200  
205 +
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.
212 +**Add APP EUI in the application.**
208 208  )))
209 209  )))
210 210  
... ... @@ -220,13 +220,15 @@
220 220  
221 221  [[image:1652953542269-423.png||height="710" width="723"]]
222 222  
223 -Add APP KEY and DEV EUI
224 224  
229 +
230 +**Add APP KEY and DEV EUI**
231 +
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.
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.
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.
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.
241 241  )))
242 242  )))
243 243  
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313 313  )))
314 314  
315 315  
316 -
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" %)(((
334 +(((
328 328  This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
336 +)))
329 329  
338 +(((
330 330  AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
340 +)))
331 331  
342 +(((
332 332  mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
344 +)))
333 333  )))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
334 334  
347 +
335 335  === 3.3.3 Configure read commands for each sampling ===
336 336  
337 337  (((
... ... @@ -344,7 +344,7 @@
344 344  During each sampling, the RS485-LN can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
345 345  
346 346  
347 -**Each RS485 commands include two parts:**
360 +(% style="color:#037691" %)**Each RS485 commands include two parts:**
348 348  
349 349  ~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.
350 350  
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359 359  Below are examples for the how above AT Commands works.
360 360  
361 361  
362 -**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:
363 363  
364 364  (% border="1" style="background-color:#4bacc6; color:white; width:499px" %)
365 365  |(% style="width:496px" %)(((
366 -**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**
367 367  
368 368  **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
369 369  
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375 375  In the RS485-LN, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
376 376  
377 377  
378 -**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.
379 379  
380 380  (% border="1" style="background-color:#4bacc6; color:white; width:510px" %)
381 381  |(% style="width:510px" %)(((
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388 388  
389 389  **Examples:**
390 390  
391 -* Grab bytes:
404 +* (% style="color:#037691" %)**Grab bytes**
392 392  
393 393  [[image:image-20220602153621-1.png]]
394 394  
395 395  
396 -* Grab a section.
409 +* (% style="color:#037691" %)**Grab a section**
397 397  
398 398  [[image:image-20220602153621-2.png]]
399 399  
400 400  
401 -* Grab different sections.
414 +* (% style="color:#037691" %)**Grab different sections**
402 402  
403 403  [[image:image-20220602153621-3.png]]
404 404  
418 +
405 405  
406 406  )))
407 407  
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510 510  Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
511 511  
512 512  
513 -== 3.5 Configure RS485-BL via AT or Downlink ==
527 +== 3.5 Configure RS485-LN via AT or Downlink ==
514 514  
515 515  (((
516 516  User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
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676 676  ==== **Set Payload version** ====
677 677  
678 678  (((
679 -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.
680 680  )))
681 681  
682 682  * (((
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774 774  XX XX XX XX: AT+COMMAND or AT+DATACUT command
775 775  )))
776 776  * (((
777 -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.
778 778  )))
779 779  
780 780  (((
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1109 1109  )))
1110 1110  
1111 1111  (% border="1" cellspacing="10" style="background-color:#ffffcc; width:500px" %)
1112 -|=(% style="width: 161px;" %)(((
1113 -**Command example:**
1114 -)))|=(% style="width: 337px;" %)(((
1126 +|=(% style="width: 100px;" %)(((
1127 +**Command example**
1128 +)))|=(% style="width: 400px;" %)(((
1115 1115  **Function**
1116 1116  )))
1117 -|(% style="width:161px" %)(((
1131 +|(% style="width:100px" %)(((
1118 1118  AT+RXMODE=1,10
1119 -)))|(% style="width:337px" %)(((
1133 +)))|(% style="width:400px" %)(((
1120 1120  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.
1121 1121  )))
1122 -|(% style="width:161px" %)(((
1136 +|(% style="width:100px" %)(((
1123 1123  AT+RXMODE=2,500
1124 -)))|(% style="width:337px" %)(((
1138 +)))|(% style="width:400px" %)(((
1125 1125  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
1126 1126  )))
1127 -|(% style="width:161px" %)(((
1141 +|(% style="width:100px" %)(((
1128 1128  AT+RXMODE=0,0
1129 -)))|(% style="width:337px" %)(((
1143 +)))|(% style="width:400px" %)(((
1130 1130  Disable listening mode. This is the default settings.
1131 1131  )))
1132 -|(% style="width:161px" %)(((
1146 +|(% style="width:100px" %)(((
1133 1133  
1134 -)))|(% style="width:337px" %)(((
1148 +)))|(% style="width:400px" %)(((
1135 1135  A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
1136 1136  )))
1137 1137  
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1180 1180  )))
1181 1181  
1182 1182  (((
1197 +(((
1183 1183  (% 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.
1184 1184  )))
1200 +)))
1185 1185  
1186 1186  
1187 1187  == 3.7 Buttons ==
1188 1188  
1189 1189  
1190 -(% border="1" cellspacing="10" style="background-color:#f7faff; width:400px" %)
1191 -|=(% style="width: 50px;" %)**Button**|=(% style="width: 350px;" %)**Feature**
1192 -|(% 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**
1193 -|(% style="width:50px" %)**RST**|(% style="width:350px" %)Reboot RS485
1194 -|(% 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"]]
1195 1195  
1196 1196  == 3.8 LEDs ==
1197 1197  
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1211 1211  == 5.1 Access AT Command ==
1212 1212  
1213 1213  (((
1214 -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.
1215 1215  )))
1216 1216  
1217 1217  [[image:1654162355560-817.png]]
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1218 1218  
1219 1219  
1220 1220  (((
1221 -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:
1222 1222  )))
1223 1223  
1224 1224  [[image:1654162368066-342.png]]
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1252 1252  )))
1253 1253  
1254 1254  
1271 +(((
1255 1255  If device already joined network:
1273 +)))
1256 1256  
1257 1257  (% class="box infomessage" %)
1258 1258  (((
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1291 1291  
1292 1292  (% style="color:red" %)**Note:**
1293 1293  
1312 +(((
1294 1294  (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1295 1295  2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1296 1296  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.
1297 1297  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 +)))
1298 1298  
1299 1299  [[image:1654162478620-421.png]]
1300 1300  
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1323 1323  
1324 1324  [[image:1654162535040-878.png]]
1325 1325  
1346 +(((
1326 1326  **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 +)))
1327 1327  
1350 +(((
1328 1328  **Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
1352 +)))
1329 1329  
1354 +(((
1330 1330  **Step3: **Open flashloader; choose the correct COM port to update.
1356 +)))
1331 1331  
1332 1332  (((
1333 1333  (((
1360 +(((
1334 1334  (% 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.
1335 1335  )))
1336 1336  )))
1364 +)))
1337 1337  
1338 1338  
1339 1339  [[image:image-20220602175818-12.png]]
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1355 1355  User can follow the introduction for [[how to upgrade image>>||anchor="H6.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
1356 1356  
1357 1357  
1358 -== 6.3 How many RS485-Slave can RS485-BL connects? ==
1386 +== 6.3 How many RS485-Slave can RS485-LN connects? ==
1359 1359  
1360 -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"]].
1361 1361  
1362 1362  
1363 1363  == 6.4 Compatible question to ChirpStack and TTI LoRaWAN server ? ==

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