Last modified by Karry Zhuang on 2025/03/06 16:34
<
From version < 31.3 >
edited by Xiaoling
on 2022/05/23 09:48
To version < 32.16 >
edited by Xiaoling
on 2022/06/02 15:30
>
Change comment: There is no comment for this version

Summary

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Content
... ... @@ -18,26 +18,30 @@
18 18  
19 19  (((
20 20  (((
21 -The Dragino RS485-LN is a RS485 to LoRaWAN Converter. It converts the RS485 signal into LoRaWAN wireless signal which simplify the IoT installation and reduce the installation/maintaining cost.
21 +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.
22 22  )))
23 23  
24 24  (((
25 -RS485-LN allows user to monitor / control RS485 devices and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, smartphone detection, building automation, and so on.
25 +RS485-LN allows user to (% style="color:blue" %)**monitor / control RS485 devices**(%%) and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, smartphone detection, building automation, and so on.
26 26  )))
27 27  
28 28  (((
29 -For data uplink, RS485-LN sends user-defined commands to RS485 devices and gets the return from the RS485 devices. RS485-LN will process these returns according to user-define rules to get the final payload and upload to LoRaWAN server.
29 +(% style="color:blue" %)**For data uplink**(%%), RS485-LN sends user-defined commands to RS485 devices and gets the return from the RS485 devices. RS485-LN will process these returns according to user-define rules to get the final payload and upload to LoRaWAN server.
30 30  )))
31 31  
32 32  (((
33 -For data downlink, RS485-LN runs in LoRaWAN Class C. When there downlink commands from LoRaWAN server, RS485-LN will forward the commands from LoRaWAN server to RS485 devices.
33 +(% style="color:blue" %)**For data downlink**(%%), RS485-LN runs in LoRaWAN Class C. When there downlink commands from LoRaWAN server, RS485-LN will forward the commands from LoRaWAN server to RS485 devices.
34 +
35 +(% 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]]
34 34  )))
35 35  )))
36 36  
37 37  [[image:1653267211009-519.png||height="419" width="724"]]
38 38  
41 +
39 39  == 1.2 Specifications ==
40 40  
44 +
41 41  **Hardware System:**
42 42  
43 43  * STM32L072CZT6 MCU
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44 44  * SX1276/78 Wireless Chip 
45 45  * Power Consumption (exclude RS485 device):
46 46  ** Idle: 32mA@12v
47 -
48 -*
49 49  ** 20dB Transmit: 65mA@12v
50 50  
51 51  **Interface for Model:**
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74 74  * Automatic RF Sense and CAD with ultra-fast AFC.
75 75  * Packet engine up to 256 bytes with CRC.
76 76  
79 +
80 +
77 77  == 1.3 Features ==
78 78  
79 79  * LoRaWAN Class A & Class C protocol (default Class C)
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85 85  * Support Modbus protocol
86 86  * Support Interrupt uplink (Since hardware version v1.2)
87 87  
92 +
93 +
88 88  == 1.4 Applications ==
89 89  
90 90  * Smart Buildings & Home Automation
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94 94  * Smart Cities
95 95  * Smart Factory
96 96  
103 +
104 +
97 97  == 1.5 Firmware Change log ==
98 98  
99 99  [[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
100 100  
109 +
101 101  == 1.6 Hardware Change log ==
102 102  
103 103  (((
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105 105  v1.2: Add External Interrupt Pin.
106 106  
107 107  v1.0: Release
117 +
118 +
108 108  )))
109 109  )))
110 110  
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121 121  )))
122 122  
123 123  [[image:1653268091319-405.png]]
135 +
136 +
124 124  )))
125 125  
126 126  = 3. Operation Mode =
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129 129  
130 130  (((
131 131  The RS485-LN is configured as LoRaWAN OTAA Class C mode by default. It has OTAA keys to join network. To connect a local LoRaWAN network, user just need to input the OTAA keys in the network server and power on the RS485-LN. It will auto join the network via OTAA.
145 +
146 +
132 132  )))
133 133  
134 134  == 3.2 Example to join LoRaWAN network ==
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137 137  
138 138  [[image:1653268155545-638.png||height="334" width="724"]]
139 139  
155 +
140 140  (((
157 +(((
141 141  The RS485-LN in this example connected to two RS485 devices for demonstration, user can connect to other RS485 devices via the same method. The connection is as below:
159 +)))
142 142  
161 +(((
143 143  485A+ and 485B- of the sensor are connected to RS485A and RA485B of RS485-LN respectively.
163 +)))
144 144  
145 145  [[image:1653268227651-549.png||height="592" width="720"]]
146 146  
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192 192  
193 193  [[image:1652953568895-172.png||height="232" width="724"]]
194 194  
215 +
195 195  == 3.3 Configure Commands to read data ==
196 196  
197 197  (((
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201 201  
202 202  (((
203 203  (% 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
225 +
226 +
204 204  )))
205 205  )))
206 206  
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208 208  
209 209  To use RS485-LN to read data from RS485 sensors, connect the RS485-LN A/B traces to the sensors. And user need to make sure RS485-LN use the match UART setting to access the sensors. The related commands for UART settings are:
210 210  
211 -(% border="1" style="background-color:#ffffcc; color:green; width:795px" %)
212 -|(((
234 +(% border="1" style="background-color:#ffffcc; color:green; width:782px" %)
235 +|(% style="width:128px" %)(((
213 213  **AT Commands**
214 -)))|(% style="width:285px" %)(((
237 +)))|(% style="width:305px" %)(((
215 215  **Description**
216 -)))|(% style="width:347px" %)(((
239 +)))|(% style="width:346px" %)(((
217 217  **Example**
218 218  )))
219 -|(((
242 +|(% style="width:128px" %)(((
220 220  AT+BAUDR
221 -)))|(% style="width:285px" %)(((
244 +)))|(% style="width:305px" %)(((
222 222  Set the baud rate (for RS485 connection). Default Value is: 9600.
223 -)))|(% style="width:347px" %)(((
246 +)))|(% style="width:346px" %)(((
224 224  (((
225 225  AT+BAUDR=9600
226 226  )))
... ... @@ -229,11 +229,11 @@
229 229  Options: (1200,2400,4800,14400,19200,115200)
230 230  )))
231 231  )))
232 -|(((
255 +|(% style="width:128px" %)(((
233 233  AT+PARITY
234 -)))|(% style="width:285px" %)(((
257 +)))|(% style="width:305px" %)(((
235 235  Set UART parity (for RS485 connection)
236 -)))|(% style="width:347px" %)(((
259 +)))|(% style="width:346px" %)(((
237 237  (((
238 238  AT+PARITY=0
239 239  )))
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242 242  Option: 0: no parity, 1: odd parity, 2: even parity
243 243  )))
244 244  )))
245 -|(((
268 +|(% style="width:128px" %)(((
246 246  AT+STOPBIT
247 -)))|(% style="width:285px" %)(((
270 +)))|(% style="width:305px" %)(((
248 248  (((
249 249  Set serial stopbit (for RS485 connection)
250 250  )))
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252 252  (((
253 253  
254 254  )))
255 -)))|(% style="width:347px" %)(((
278 +)))|(% style="width:346px" %)(((
256 256  (((
257 257  AT+STOPBIT=0 for 1bit
258 258  )))
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266 266  )))
267 267  )))
268 268  
292 +
269 269  === 3.3.2 Configure sensors ===
270 270  
271 271  (((

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