Last modified by Bei Jinggeng on 2025/01/16 11:36
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From version < 60.4 >
edited by Xiaoling
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To version < 58.18 >
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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  
... ... @@ -24,8 +24,6 @@
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  )))
... ... @@ -49,8 +49,6 @@
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  )))
... ... @@ -69,15 +69,11 @@
69 69  ** Idle: 32mA@12v
70 70  ** 20dB Transmit: 65mA@12v
71 71  
72 -
73 -
74 74  **Interface for Model:**
75 75  
76 76  * RS485
77 77  * Power Input 7~~ 24V DC. 
78 78  
79 -
80 -
81 81  **LoRa Spec:**
82 82  
83 83  * Frequency Range:
... ... @@ -99,9 +99,6 @@
99 99  * Automatic RF Sense and CAD with ultra-fast AFC.
100 100  * Packet engine up to 256 bytes with CRC
101 101  
102 -
103 -
104 -
105 105  == 1.3 Features ==
106 106  
107 107  * LoRaWAN Class A & Class C protocol (default Class C)
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114 114  * Support Interrupt uplink (Since hardware version v1.2)
115 115  
116 116  
117 -
118 -
119 119  == 1.4 Applications ==
120 120  
121 121  * Smart Buildings & Home Automation
... ... @@ -126,8 +126,6 @@
126 126  * Smart Factory
127 127  
128 128  
129 -
130 -
131 131  == 1.5 Firmware Change log ==
132 132  
133 133  [[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
... ... @@ -249,15 +249,11 @@
249 249  
250 250  (((
251 251  (((
252 -(((
253 253  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.
254 254  )))
255 -)))
256 256  
257 257  (((
258 -(((
259 259  (% style="color:red" %)Note: below description and commands are for firmware version >v1.1, if you have firmware version v1.0. Please check the [[user manual v1.0>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/&file=RS485-LN_UserManual_v1.0.1.pdf]] or upgrade the firmware to v1.1
260 -)))
261 261  
262 262  
263 263  )))
... ... @@ -325,6 +325,8 @@
325 325  )))
326 326  )))
327 327  
310 +
311 +
328 328  === 3.3.2 Configure sensors ===
329 329  
330 330  (((
... ... @@ -336,19 +336,15 @@
336 336  (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
337 337  |=(% style="width: 110px;" %)**AT Commands**|=(% style="width: 190px;" %)**Description**|=(% style="width: 190px;" %)**Example**
338 338  |AT+CFGDEV|(% style="width:110px" %)(((
339 -(((
340 340  This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
341 -)))
342 342  
343 -(((
344 344  AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
345 -)))
346 346  
347 -(((
348 348  mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
349 -)))
350 350  )))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
351 351  
330 +
331 +
352 352  === 3.3.3 Configure read commands for each sampling ===
353 353  
354 354  (((
... ... @@ -1103,122 +1103,62 @@
1103 1103  )))
1104 1104  
1105 1105  
1106 -
1107 -
1108 1108  == 3.6 Listening mode for RS485 network ==
1109 1109  
1110 -(((
1111 1111  This feature support since firmware v1.4
1112 -)))
1113 1113  
1114 -(((
1115 1115  RS485-LN supports listening mode, it can listen the RS485 network packets and send them via LoRaWAN uplink. Below is the structure. The blue arrow shows the RS485 network packets to RS485-LN.
1116 -)))
1117 1117  
1118 1118  [[image:image-20220602171200-8.png||height="567" width="1007"]]
1119 1119  
1120 -(((
1121 1121  To enable the listening mode, use can run the command AT+RXMODE.
1122 -)))
1123 1123  
1124 -(((
1125 -
1126 -)))
1127 1127  
1128 -(% border="1" cellspacing="10" style="background-color:#ffffcc; width:500px" %)
1129 -|=(% style="width: 100px;" %)(((
1130 -**Command example**
1131 -)))|=(% style="width: 400px;" %)(((
1132 -**Function**
1133 -)))
1134 -|(% style="width:100px" %)(((
1135 -AT+RXMODE=1,10
1136 -)))|(% style="width:400px" %)(((
1137 -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.
1138 -)))
1139 -|(% style="width:100px" %)(((
1140 -AT+RXMODE=2,500
1141 -)))|(% style="width:400px" %)(((
1142 -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
1143 -)))
1144 -|(% style="width:100px" %)(((
1145 -AT+RXMODE=0,0
1146 -)))|(% style="width:400px" %)(((
1147 -Disable listening mode. This is the default settings.
1148 -)))
1149 -|(% style="width:100px" %)(((
1150 -
1151 -)))|(% style="width:400px" %)(((
1152 -A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
1153 -)))
1097 +(% border="1" style="background-color:#ffffcc; width:500px" %)
1098 +|=(% style="width: 161px;" %)**Command example:**|=(% style="width: 337px;" %)**Function**
1099 +|(% style="width:161px" %)AT+RXMODE=1,10 |(% style="width:337px" %)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.
1100 +|(% style="width:161px" %)AT+RXMODE=2,500|(% style="width:337px" %)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
1101 +|(% style="width:161px" %)AT+RXMODE=0,0|(% style="width:337px" %)Disable listening mode. This is the default settings.
1102 +|(% style="width:161px" %) |(% style="width:337px" %)A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 ~| cc)
1154 1154  
1155 -(((
1156 1156  **Downlink Command:**
1157 -)))
1158 1158  
1159 -(((
1160 1160  **0xA6 aa bb cc ** same as AT+RXMODE=aa,(bb<<8 | cc)
1161 -)))
1162 1162  
1163 -(((
1164 -
1165 -)))
1166 1166  
1167 -(((
1168 1168  **Example**:
1169 -)))
1170 1170  
1171 -(((
1172 1172  The RS485-LN is set to AT+RXMODE=2,1000
1173 -)))
1174 1174  
1175 -(((
1176 1176  There is a two Modbus commands in the RS485 network as below:
1177 -)))
1178 1178  
1179 -(((
1180 1180  The Modbus master send a command: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b
1181 -)))
1182 1182  
1183 -(((
1184 1184  And Modbus slave reply with: (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
1185 -)))
1186 1186  
1187 -(((
1188 1188  RS485-LN will capture both and send the uplink: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b  (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
1189 -)))
1190 1190  
1191 -(((
1192 1192  [[image:image-20220602171200-9.png]]
1193 -)))
1194 1194  
1195 -(((
1196 -
1197 -)))
1198 1198  
1199 -(((
1200 -(((
1201 1201  (% 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.
1202 -)))
1203 -)))
1204 1204  
1205 1205  
1206 1206  == 3.7 Buttons ==
1207 1207  
1208 1208  
1209 -(% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1210 -|=(% style="width: 50px;" %)**Button**|=(% style="width: 361px;" %)**Feature**
1211 -|(% 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**
1212 -|(% style="width:50px" %)**RST**|(% style="width:361px" %)Reboot RS485
1213 -|(% style="width:50px" %)**PRO**|(% style="width:361px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1130 +(% border="1" style="background-color:#f7faff; width:500px" %)
1131 +|=**Button**|=(% style="width: 1420px;" %)**Feature**
1132 +|**ACT**|(% style="width:1420px" %)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**
1133 +|**RST**|(% style="width:1420px" %)Reboot RS485
1134 +|**PRO**|(% style="width:1420px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1214 1214  
1215 1215  == 3.8 LEDs ==
1216 1216  
1217 -
1218 -(% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1219 -|=(% style="width: 50px;" %)**LEDs**|=(% style="width: 380px;" %)**Feature**
1138 +(% border="1" style="background-color:#f7faff; width:500px" %)
1139 +|=**LEDs**|=**Feature**
1220 1220  |**PWR**|Always on if there is power
1221 -|**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.
1141 +|**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.
1222 1222  
1223 1223  = 4. Case Study =
1224 1224  
... ... @@ -1229,26 +1229,19 @@
1229 1229  
1230 1230  == 5.1 Access AT Command ==
1231 1231  
1232 -(((
1233 1233  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.
1234 -)))
1235 1235  
1236 1236  [[image:1654162355560-817.png]]
1237 1237  
1238 1238  
1239 -(((
1240 1240  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:
1241 -)))
1242 1242  
1243 1243  [[image:1654162368066-342.png]]
1244 1244  
1245 1245  
1246 -(((
1247 1247  More detail AT Command manual can be found at [[AT Command Manual>>https://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/]]
1248 -)))
1249 1249  
1250 1250  
1251 -
1252 1252  == 5.2 Common AT Command Sequence ==
1253 1253  
1254 1254  === 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
... ... @@ -1271,9 +1271,7 @@
1271 1271  )))
1272 1272  
1273 1273  
1274 -(((
1275 1275  If device already joined network:
1276 -)))
1277 1277  
1278 1278  (% class="box infomessage" %)
1279 1279  (((
... ... @@ -1312,12 +1312,10 @@
1312 1312  
1313 1313  (% style="color:red" %)**Note:**
1314 1314  
1315 -(((
1316 1316  (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1317 1317  2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1318 1318  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.
1319 1319  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
1320 -)))
1321 1321  
1322 1322  [[image:1654162478620-421.png]]
1323 1323  
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1326 1326  
1327 1327  == 6.1 How to upgrade the image? ==
1328 1328  
1329 -(((
1330 1330  The RS485-LN LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-LN to:
1331 -)))
1332 1332  
1333 -* (((
1334 -Support new features
1335 -)))
1336 -* (((
1337 -For bug fix
1338 -)))
1339 -* (((
1340 -Change LoRaWAN bands.
1341 -)))
1240 +* Support new features
1241 +* For bug fix
1242 +* Change LoRaWAN bands.
1342 1342  
1343 -(((
1344 1344  Below shows the hardware connection for how to upload an image to RS485-LN:
1345 -)))
1346 1346  
1347 1347  [[image:1654162535040-878.png]]
1348 1348  
1349 -(((
1350 1350  **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]].
1351 -)))
1352 1352  
1353 -(((
1354 1354  **Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
1355 -)))
1356 1356  
1357 -(((
1358 1358  **Step3: **Open flashloader; choose the correct COM port to update.
1359 -)))
1360 1360  
1361 1361  (((
1362 -(((
1363 -(((
1364 1364  (% 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.
1365 1365  )))
1366 -)))
1367 -)))
1368 1368  
1369 1369  
1370 1370  [[image:image-20220602175818-12.png]]
... ... @@ -1427,6 +1427,7 @@
1427 1427  * (% style="color:blue" %)**RU864**(%%): frequency bands RU864
1428 1428  * (% style="color:blue" %)**KZ865**(%%): frequency bands KZ865
1429 1429  
1319 +
1430 1430  = 9.Packing Info =
1431 1431  
1432 1432  
... ... @@ -1443,6 +1443,7 @@
1443 1443  * Package Size / pcs : 14.5 x 8 x 5 cm
1444 1444  * Weight / pcs : 170g
1445 1445  
1336 +
1446 1446  = 10. FCC Caution for RS485LN-US915 =
1447 1447  
1448 1448  (((

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