Last modified by Bei Jinggeng on 2025/01/16 11:36
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From version < 60.2 >
edited by Xiaoling
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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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312 312  )))
313 313  
314 314  
316 +
315 315  === 3.3.2 Configure sensors ===
316 316  
317 317  (((
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323 323  (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
324 324  |=(% style="width: 110px;" %)**AT Commands**|=(% style="width: 190px;" %)**Description**|=(% style="width: 190px;" %)**Example**
325 325  |AT+CFGDEV|(% style="width:110px" %)(((
326 -(((
327 327  This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
328 -)))
329 329  
330 -(((
331 331  AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
332 -)))
333 333  
334 -(((
335 335  mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
336 -)))
337 337  )))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
338 338  
339 -
340 340  === 3.3.3 Configure read commands for each sampling ===
341 341  
342 342  (((
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1114 1114  )))
1115 1115  
1116 1116  (% border="1" cellspacing="10" style="background-color:#ffffcc; width:500px" %)
1117 -|=(% style="width: 100px;" %)(((
1118 -**Command example**
1119 -)))|=(% style="width: 400px;" %)(((
1112 +|=(% style="width: 161px;" %)(((
1113 +**Command example:**
1114 +)))|=(% style="width: 337px;" %)(((
1120 1120  **Function**
1121 1121  )))
1122 -|(% style="width:100px" %)(((
1117 +|(% style="width:161px" %)(((
1123 1123  AT+RXMODE=1,10
1124 -)))|(% style="width:400px" %)(((
1119 +)))|(% style="width:337px" %)(((
1125 1125  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.
1126 1126  )))
1127 -|(% style="width:100px" %)(((
1122 +|(% style="width:161px" %)(((
1128 1128  AT+RXMODE=2,500
1129 -)))|(% style="width:400px" %)(((
1124 +)))|(% style="width:337px" %)(((
1130 1130  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
1131 1131  )))
1132 -|(% style="width:100px" %)(((
1127 +|(% style="width:161px" %)(((
1133 1133  AT+RXMODE=0,0
1134 -)))|(% style="width:400px" %)(((
1129 +)))|(% style="width:337px" %)(((
1135 1135  Disable listening mode. This is the default settings.
1136 1136  )))
1137 -|(% style="width:100px" %)(((
1132 +|(% style="width:161px" %)(((
1138 1138  
1139 -)))|(% style="width:400px" %)(((
1134 +)))|(% style="width:337px" %)(((
1140 1140  A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
1141 1141  )))
1142 1142  
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1185 1185  )))
1186 1186  
1187 1187  (((
1188 -(((
1189 1189  (% 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.
1190 1190  )))
1191 -)))
1192 1192  
1193 1193  
1194 1194  == 3.7 Buttons ==
1195 1195  
1196 1196  
1197 -(% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1198 -|=(% style="width: 50px;" %)**Button**|=(% style="width: 361px;" %)**Feature**
1199 -|(% 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**
1200 -|(% style="width:50px" %)**RST**|(% style="width:361px" %)Reboot RS485
1201 -|(% 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"]]
1202 1202  
1203 -
1204 1204  == 3.8 LEDs ==
1205 1205  
1206 1206  
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1209 1209  |**PWR**|Always on if there is power
1210 1210  |**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.
1211 1211  
1212 -
1213 1213  = 4. Case Study =
1214 1214  
1215 1215  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]]
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1261 1261  )))
1262 1262  
1263 1263  
1264 -(((
1265 1265  If device already joined network:
1266 -)))
1267 1267  
1268 1268  (% class="box infomessage" %)
1269 1269  (((
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1302 1302  
1303 1303  (% style="color:red" %)**Note:**
1304 1304  
1305 -(((
1306 1306  (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1307 1307  2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1308 1308  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.
1309 1309  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
1310 -)))
1311 1311  
1312 1312  [[image:1654162478620-421.png]]
1313 1313  
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1336 1336  
1337 1337  [[image:1654162535040-878.png]]
1338 1338  
1339 -(((
1340 1340  **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]].
1341 -)))
1342 1342  
1343 -(((
1344 1344  **Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
1345 -)))
1346 1346  
1347 -(((
1348 1348  **Step3: **Open flashloader; choose the correct COM port to update.
1349 -)))
1350 1350  
1351 1351  (((
1352 1352  (((
1353 -(((
1354 1354  (% 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.
1355 1355  )))
1356 1356  )))
1357 -)))
1358 1358  
1359 1359  
1360 1360  [[image:image-20220602175818-12.png]]

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