Last modified by Bei Jinggeng on 2025/01/16 11:36
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To version < 58.42 >
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Title
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1 -RS485-LN – RS485 to LoRaWAN Converter User Manual
1 +RS485-LN – RS485 to LoRaWAN Converter
Content
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3 3  
4 4  
5 5  
6 +**RS485-LN – RS485 to LoRaWAN Converter User Manual**
6 6  
7 7  
8 8  
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24 24  (((
25 25  (((
26 26  (((
27 -
28 -
29 29  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.
30 30  )))
31 31  )))
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49 49  
50 50  (((
51 51  (% 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 -
54 54  )))
55 55  )))
56 56  )))
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69 69  ** Idle: 32mA@12v
70 70  ** 20dB Transmit: 65mA@12v
71 71  
72 -
73 73  **Interface for Model:**
74 74  
75 75  * RS485
76 76  * Power Input 7~~ 24V DC. 
77 77  
78 -
79 79  **LoRa Spec:**
80 80  
81 81  * Frequency Range:
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98 98  * Packet engine up to 256 bytes with CRC
99 99  
100 100  
101 -
102 102  == 1.3 Features ==
103 103  
104 104  * LoRaWAN Class A & Class C protocol (default Class C)
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111 111  * Support Interrupt uplink (Since hardware version v1.2)
112 112  
113 113  
114 -
115 115  == 1.4 Applications ==
116 116  
117 117  * Smart Buildings & Home Automation
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122 122  * Smart Factory
123 123  
124 124  
125 -
126 126  == 1.5 Firmware Change log ==
127 127  
128 128  [[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
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191 191  
192 192  [[image:1653268227651-549.png||height="592" width="720"]]
193 193  
194 -
195 195  (((
196 196  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:
197 197  )))
198 198  
199 199  (((
200 -(% style="color:blue" %)**Step 1**(%%): Create a device in TTN V3 with the OTAA keys from RS485-LN.
191 +**Step 1**: Create a device in TTN V3 with the OTAA keys from RS485-LN.
201 201  )))
202 202  
203 203  (((
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207 207  
208 208  [[image:1652953462722-299.png]]
209 209  
210 -
211 211  (((
212 212  (((
213 213  User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
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214 214  )))
215 215  
216 216  (((
217 -**Add APP EUI in the application.**
207 +Add APP EUI in the application.
218 218  )))
219 219  )))
220 220  
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230 230  
231 231  [[image:1652953542269-423.png||height="710" width="723"]]
232 232  
223 +Add APP KEY and DEV EUI
233 233  
234 -
235 -**Add APP KEY and DEV EUI**
236 -
237 237  [[image:1652953553383-907.png||height="514" width="724"]]
238 238  
239 239  
240 240  (((
241 -(% 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.
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.
242 242  )))
243 243  
244 244  [[image:1652953568895-172.png||height="232" width="724"]]
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326 326  
327 327  
328 328  
329 -
330 330  === 3.3.2 Configure sensors ===
331 331  
332 332  (((
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338 338  (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
339 339  |=(% style="width: 110px;" %)**AT Commands**|=(% style="width: 190px;" %)**Description**|=(% style="width: 190px;" %)**Example**
340 340  |AT+CFGDEV|(% style="width:110px" %)(((
341 -(((
342 342  This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
343 -)))
344 344  
345 -(((
346 346  AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
347 -)))
348 348  
349 -(((
350 350  mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
351 -)))
352 352  )))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
353 353  
354 -
355 -
356 -
357 357  === 3.3.3 Configure read commands for each sampling ===
358 358  
359 359  (((
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424 424  
425 425  [[image:image-20220602153621-3.png]]
426 426  
427 -
428 428  
429 429  )))
430 430  
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533 533  Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
534 534  
535 535  
536 -== 3.5 Configure RS485-LN via AT or Downlink ==
513 +== 3.5 Configure RS485-BL via AT or Downlink ==
537 537  
538 538  (((
539 539  User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
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1132 1132  )))
1133 1133  
1134 1134  (% border="1" cellspacing="10" style="background-color:#ffffcc; width:500px" %)
1135 -|=(% style="width: 100px;" %)(((
1136 -**Command example**
1137 -)))|=(% style="width: 400px;" %)(((
1112 +|=(% style="width: 161px;" %)(((
1113 +**Command example:**
1114 +)))|=(% style="width: 337px;" %)(((
1138 1138  **Function**
1139 1139  )))
1140 -|(% style="width:100px" %)(((
1117 +|(% style="width:161px" %)(((
1141 1141  AT+RXMODE=1,10
1142 -)))|(% style="width:400px" %)(((
1119 +)))|(% style="width:337px" %)(((
1143 1143  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.
1144 1144  )))
1145 -|(% style="width:100px" %)(((
1122 +|(% style="width:161px" %)(((
1146 1146  AT+RXMODE=2,500
1147 -)))|(% style="width:400px" %)(((
1124 +)))|(% style="width:337px" %)(((
1148 1148  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
1149 1149  )))
1150 -|(% style="width:100px" %)(((
1127 +|(% style="width:161px" %)(((
1151 1151  AT+RXMODE=0,0
1152 -)))|(% style="width:400px" %)(((
1129 +)))|(% style="width:337px" %)(((
1153 1153  Disable listening mode. This is the default settings.
1154 1154  )))
1155 -|(% style="width:100px" %)(((
1132 +|(% style="width:161px" %)(((
1156 1156  
1157 -)))|(% style="width:400px" %)(((
1134 +)))|(% style="width:337px" %)(((
1158 1158  A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
1159 1159  )))
1160 1160  
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1203 1203  )))
1204 1204  
1205 1205  (((
1206 -(((
1207 1207  (% 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.
1208 1208  )))
1209 -)))
1210 1210  
1211 1211  
1212 1212  == 3.7 Buttons ==
1213 1213  
1214 1214  
1215 -(% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1216 -|=(% style="width: 50px;" %)**Button**|=(% style="width: 361px;" %)**Feature**
1217 -|(% 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**
1218 -|(% style="width:50px" %)**RST**|(% style="width:361px" %)Reboot RS485
1219 -|(% style="width:50px" %)**PRO**|(% style="width:361px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
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"]]
1220 1220  
1221 1221  == 3.8 LEDs ==
1222 1222  
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1277 1277  )))
1278 1278  
1279 1279  
1280 -(((
1281 1281  If device already joined network:
1282 -)))
1283 1283  
1284 1284  (% class="box infomessage" %)
1285 1285  (((
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1318 1318  
1319 1319  (% style="color:red" %)**Note:**
1320 1320  
1321 -(((
1322 1322  (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1323 1323  2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1324 1324  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.
1325 1325  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
1326 -)))
1327 1327  
1328 1328  [[image:1654162478620-421.png]]
1329 1329  
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1352 1352  
1353 1353  [[image:1654162535040-878.png]]
1354 1354  
1355 -(((
1356 1356  **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]].
1357 -)))
1358 1358  
1359 -(((
1360 1360  **Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
1361 -)))
1362 1362  
1363 -(((
1364 1364  **Step3: **Open flashloader; choose the correct COM port to update.
1365 -)))
1366 1366  
1367 1367  (((
1368 1368  (((
1369 -(((
1370 1370  (% 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.
1371 1371  )))
1372 1372  )))
1373 -)))
1374 1374  
1375 1375  
1376 1376  [[image:image-20220602175818-12.png]]

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