Last modified by Bei Jinggeng on 2025/01/16 11:36
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From version < 60.3 >
edited by Xiaoling
on 2022/06/14 11:06
To version < 58.19 >
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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  )))
... ... @@ -69,13 +69,11 @@
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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97 97  * Automatic RF Sense and CAD with ultra-fast AFC.
98 98  * Packet engine up to 256 bytes with CRC
99 99  
100 -
101 -
102 -
103 103  == 1.3 Features ==
104 104  
105 105  * LoRaWAN Class A & Class C protocol (default Class C)
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112 112  * Support Interrupt uplink (Since hardware version v1.2)
113 113  
114 114  
115 -
116 -
117 117  == 1.4 Applications ==
118 118  
119 119  * Smart Buildings & Home Automation
... ... @@ -124,8 +124,6 @@
124 124  * Smart Factory
125 125  
126 126  
127 -
128 -
129 129  == 1.5 Firmware Change log ==
130 130  
131 131  [[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
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247 247  
248 248  (((
249 249  (((
250 -(((
251 251  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.
252 252  )))
253 -)))
254 254  
255 255  (((
256 -(((
257 257  (% 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
258 -)))
259 259  
260 260  
261 261  )))
... ... @@ -323,6 +323,8 @@
323 323  )))
324 324  )))
325 325  
310 +
311 +
326 326  === 3.3.2 Configure sensors ===
327 327  
328 328  (((
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334 334  (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
335 335  |=(% style="width: 110px;" %)**AT Commands**|=(% style="width: 190px;" %)**Description**|=(% style="width: 190px;" %)**Example**
336 336  |AT+CFGDEV|(% style="width:110px" %)(((
337 -(((
338 338  This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
339 -)))
340 340  
341 -(((
342 342  AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
343 -)))
344 344  
345 -(((
346 346  mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
347 -)))
348 348  )))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
349 349  
330 +
331 +
350 350  === 3.3.3 Configure read commands for each sampling ===
351 351  
352 352  (((
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1105 1105  
1106 1106  == 3.6 Listening mode for RS485 network ==
1107 1107  
1108 -(((
1109 1109  This feature support since firmware v1.4
1110 -)))
1111 1111  
1112 -(((
1113 1113  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.
1114 -)))
1115 1115  
1116 1116  [[image:image-20220602171200-8.png||height="567" width="1007"]]
1117 1117  
1118 -(((
1119 1119  To enable the listening mode, use can run the command AT+RXMODE.
1120 -)))
1121 1121  
1122 -(((
1123 -
1124 -)))
1125 1125  
1126 -(% border="1" cellspacing="10" style="background-color:#ffffcc; width:500px" %)
1127 -|=(% style="width: 100px;" %)(((
1128 -**Command example**
1129 -)))|=(% style="width: 400px;" %)(((
1130 -**Function**
1131 -)))
1132 -|(% style="width:100px" %)(((
1133 -AT+RXMODE=1,10
1134 -)))|(% style="width:400px" %)(((
1135 -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.
1136 -)))
1137 -|(% style="width:100px" %)(((
1138 -AT+RXMODE=2,500
1139 -)))|(% style="width:400px" %)(((
1140 -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
1141 -)))
1142 -|(% style="width:100px" %)(((
1143 -AT+RXMODE=0,0
1144 -)))|(% style="width:400px" %)(((
1145 -Disable listening mode. This is the default settings.
1146 -)))
1147 -|(% style="width:100px" %)(((
1148 -
1149 -)))|(% style="width:400px" %)(((
1150 -A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
1151 -)))
1099 +(% border="1" style="background-color:#ffffcc; width:500px" %)
1100 +|=(% style="width: 161px;" %)**Command example:**|=(% style="width: 337px;" %)**Function**
1101 +|(% 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.
1102 +|(% 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
1103 +|(% style="width:161px" %)AT+RXMODE=0,0|(% style="width:337px" %)Disable listening mode. This is the default settings.
1104 +|(% style="width:161px" %) |(% style="width:337px" %)A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 ~| cc)
1152 1152  
1153 -(((
1154 1154  **Downlink Command:**
1155 -)))
1156 1156  
1157 -(((
1158 1158  **0xA6 aa bb cc ** same as AT+RXMODE=aa,(bb<<8 | cc)
1159 -)))
1160 1160  
1161 -(((
1162 -
1163 -)))
1164 1164  
1165 -(((
1166 1166  **Example**:
1167 -)))
1168 1168  
1169 -(((
1170 1170  The RS485-LN is set to AT+RXMODE=2,1000
1171 -)))
1172 1172  
1173 -(((
1174 1174  There is a two Modbus commands in the RS485 network as below:
1175 -)))
1176 1176  
1177 -(((
1178 1178  The Modbus master send a command: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b
1179 -)))
1180 1180  
1181 -(((
1182 1182  And Modbus slave reply with: (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
1183 -)))
1184 1184  
1185 -(((
1186 1186  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
1187 -)))
1188 1188  
1189 -(((
1190 1190  [[image:image-20220602171200-9.png]]
1191 -)))
1192 1192  
1193 -(((
1194 -
1195 -)))
1196 1196  
1197 -(((
1198 -(((
1199 1199  (% 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.
1200 -)))
1201 -)))
1202 1202  
1203 1203  
1204 1204  == 3.7 Buttons ==
1205 1205  
1206 1206  
1207 -(% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1208 -|=(% style="width: 50px;" %)**Button**|=(% style="width: 361px;" %)**Feature**
1209 -|(% 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**
1210 -|(% style="width:50px" %)**RST**|(% style="width:361px" %)Reboot RS485
1211 -|(% style="width:50px" %)**PRO**|(% style="width:361px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1132 +(% border="1" style="background-color:#f7faff; width:500px" %)
1133 +|=**Button**|=(% style="width: 1420px;" %)**Feature**
1134 +|**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**
1135 +|**RST**|(% style="width:1420px" %)Reboot RS485
1136 +|**PRO**|(% style="width:1420px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1212 1212  
1213 1213  == 3.8 LEDs ==
1214 1214  
1215 -
1216 -(% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1217 -|=(% style="width: 50px;" %)**LEDs**|=(% style="width: 380px;" %)**Feature**
1140 +(% border="1" style="background-color:#f7faff; width:500px" %)
1141 +|=**LEDs**|=**Feature**
1218 1218  |**PWR**|Always on if there is power
1219 -|**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.
1143 +|**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.
1220 1220  
1221 1221  = 4. Case Study =
1222 1222  
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1227 1227  
1228 1228  == 5.1 Access AT Command ==
1229 1229  
1230 -(((
1231 1231  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.
1232 -)))
1233 1233  
1234 1234  [[image:1654162355560-817.png]]
1235 1235  
1236 1236  
1237 -(((
1238 1238  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:
1239 -)))
1240 1240  
1241 1241  [[image:1654162368066-342.png]]
1242 1242  
1243 1243  
1244 -(((
1245 1245  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/]]
1246 -)))
1247 1247  
1248 1248  
1249 -
1250 1250  == 5.2 Common AT Command Sequence ==
1251 1251  
1252 1252  === 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
... ... @@ -1269,9 +1269,7 @@
1269 1269  )))
1270 1270  
1271 1271  
1272 -(((
1273 1273  If device already joined network:
1274 -)))
1275 1275  
1276 1276  (% class="box infomessage" %)
1277 1277  (((
... ... @@ -1310,12 +1310,10 @@
1310 1310  
1311 1311  (% style="color:red" %)**Note:**
1312 1312  
1313 -(((
1314 1314  (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1315 1315  2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1316 1316  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.
1317 1317  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
1318 -)))
1319 1319  
1320 1320  [[image:1654162478620-421.png]]
1321 1321  
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1324 1324  
1325 1325  == 6.1 How to upgrade the image? ==
1326 1326  
1327 -(((
1328 1328  The RS485-LN LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-LN to:
1329 -)))
1330 1330  
1331 -* (((
1332 -Support new features
1333 -)))
1334 -* (((
1335 -For bug fix
1336 -)))
1337 -* (((
1338 -Change LoRaWAN bands.
1339 -)))
1242 +* Support new features
1243 +* For bug fix
1244 +* Change LoRaWAN bands.
1340 1340  
1341 -(((
1342 1342  Below shows the hardware connection for how to upload an image to RS485-LN:
1343 -)))
1344 1344  
1345 1345  [[image:1654162535040-878.png]]
1346 1346  
1347 -(((
1348 1348  **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]].
1349 -)))
1350 1350  
1351 -(((
1352 1352  **Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
1353 -)))
1354 1354  
1355 -(((
1356 1356  **Step3: **Open flashloader; choose the correct COM port to update.
1357 -)))
1358 1358  
1359 1359  (((
1360 -(((
1361 -(((
1362 1362  (% 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.
1363 1363  )))
1364 -)))
1365 -)))
1366 1366  
1367 1367  
1368 1368  [[image:image-20220602175818-12.png]]
... ... @@ -1425,6 +1425,7 @@
1425 1425  * (% style="color:blue" %)**RU864**(%%): frequency bands RU864
1426 1426  * (% style="color:blue" %)**KZ865**(%%): frequency bands KZ865
1427 1427  
1321 +
1428 1428  = 9.Packing Info =
1429 1429  
1430 1430  
... ... @@ -1441,6 +1441,7 @@
1441 1441  * Package Size / pcs : 14.5 x 8 x 5 cm
1442 1442  * Weight / pcs : 170g
1443 1443  
1338 +
1444 1444  = 10. FCC Caution for RS485LN-US915 =
1445 1445  
1446 1446  (((

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