Last modified by Bei Jinggeng on 2025/01/16 11:36
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From version < 60.5 >
edited by Xiaoling
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To version < 58.43 >
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Summary

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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 -
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:
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100 100  * Packet engine up to 256 bytes with CRC
101 101  
102 102  
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
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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/]]
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325 325  )))
326 326  )))
327 327  
315 +
316 +
328 328  === 3.3.2 Configure sensors ===
329 329  
330 330  (((
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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  
335 +
336 +
352 352  === 3.3.3 Configure read commands for each sampling ===
353 353  
354 354  (((
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1126 1126  )))
1127 1127  
1128 1128  (% border="1" cellspacing="10" style="background-color:#ffffcc; width:500px" %)
1129 -|=(% style="width: 100px;" %)(((
1130 -**Command example**
1131 -)))|=(% style="width: 400px;" %)(((
1114 +|=(% style="width: 161px;" %)(((
1115 +**Command example:**
1116 +)))|=(% style="width: 337px;" %)(((
1132 1132  **Function**
1133 1133  )))
1134 -|(% style="width:100px" %)(((
1119 +|(% style="width:161px" %)(((
1135 1135  AT+RXMODE=1,10
1136 -)))|(% style="width:400px" %)(((
1121 +)))|(% style="width:337px" %)(((
1137 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 1138  )))
1139 -|(% style="width:100px" %)(((
1124 +|(% style="width:161px" %)(((
1140 1140  AT+RXMODE=2,500
1141 -)))|(% style="width:400px" %)(((
1126 +)))|(% style="width:337px" %)(((
1142 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 1143  )))
1144 -|(% style="width:100px" %)(((
1129 +|(% style="width:161px" %)(((
1145 1145  AT+RXMODE=0,0
1146 -)))|(% style="width:400px" %)(((
1131 +)))|(% style="width:337px" %)(((
1147 1147  Disable listening mode. This is the default settings.
1148 1148  )))
1149 -|(% style="width:100px" %)(((
1134 +|(% style="width:161px" %)(((
1150 1150  
1151 -)))|(% style="width:400px" %)(((
1136 +)))|(% style="width:337px" %)(((
1152 1152  A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
1153 1153  )))
1154 1154  
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1197 1197  )))
1198 1198  
1199 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 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"]]
1192 +(% border="1" cellspacing="10" style="background-color:#f7faff; width:400px" %)
1193 +|=(% style="width: 50px;" %)**Button**|=(% style="width: 350px;" %)**Feature**
1194 +|(% 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**
1195 +|(% style="width:50px" %)**RST**|(% style="width:350px" %)Reboot RS485
1196 +|(% style="width:50px" %)**PRO**|(% style="width:350px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1214 1214  
1215 1215  == 3.8 LEDs ==
1216 1216  
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1271 1271  )))
1272 1272  
1273 1273  
1274 -(((
1275 1275  If device already joined network:
1276 -)))
1277 1277  
1278 1278  (% class="box infomessage" %)
1279 1279  (((
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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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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 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 1366  )))
1367 -)))
1368 1368  
1369 1369  
1370 1370  [[image:image-20220602175818-12.png]]

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