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<
From version < 1.7 >
edited by Xiaoling
on 2022/05/12 09:54
To version < 7.1 >
edited by Xiaoling
on 2022/05/27 09:18
>
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Summary

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Content
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1 +(% class="wikigeneratedid" %)
2 + **Contents:**
3 +
4 +{{toc/}}
5 +
1 1  = 1. Introduction =
2 2  
3 3  This article provide the examples for RS485-LN to connect to different type of RS485 sensors.
... ... @@ -10,6 +10,7 @@
10 10  
11 11  Connection
12 12  
18 +
13 13  [[image:https://wiki.dragino.com/images/thumb/f/f2/RS485_02.png/600px-RS485_02.png||height="743" width="528"]](% style="display:none" %)
14 14  
15 15  Connection
... ... @@ -20,7 +20,6 @@
20 20  * [[Configure Manual>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Relay_VFD/]] : Explanation on how to integrate to Node-red and to the Mobile Phone, and with link to the Github code.
21 21  * [[Video Demo>>url:https://www.youtube.com/watch?v=TAFZ5eaf-MY&t=6s&ab_channel=XavierFlorensaBerenguer]]
22 22  
23 -
24 24  == 1.2 Example 2: Connect to Pulse Counter ==
25 25  
26 26  This instruction is provided by Xavier Florensa Berenguer from [[NORIA GRUPO DE COMPRAS>>url:http://www.gruponovelec.com/]]. It is to show how to use RS485-LN to connect to Pulse Counter and communicate with Mobile. This example and example 2 compose the structure for a farm IoT solution. The structure is like below:
... ... @@ -29,6 +29,7 @@
29 29  
30 30  Connection
31 31  
37 +
32 32  [[image:https://wiki.dragino.com/images/thumb/5/5f/RS485_02_2.png/600px-RS485_02_2.png||height="337" width="600"]]
33 33  
34 34  Connection
... ... @@ -36,7 +36,6 @@
36 36  * [[Pickdata MIO40 water pulse counter to LoRa with Dragino RS485-LN>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Pulse-Counter/]] : Configure Document
37 37  * [[Dragino Solution in Farm>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/&file=Dragino%20on%20Farms.pptx]]
38 38  
39 -
40 40  == 1.3 Example3: Use RS485-LN with energy meters ==
41 41  
42 42  === 1.3.1 OverView ===
... ... @@ -49,28 +49,41 @@
49 49  This example describes a single-phase meter.This is the connection between the RS485-LN and the energy meter.
50 50  )))
51 51  
52 -[[image:https://wiki.dragino.com/images/thumb/f/f4/Meter1.jpg/600px-Meter1.jpg||height="800" width="600"]]
57 +[[image:https://wiki.dragino.com/images/thumb/f/f4/Meter1.jpg/600px-Meter1.jpg||height="726" width="545"]]
53 53  
54 54  Connection1
55 55  
61 +(((
56 56  How to connect with Energy Meter：
63 +)))
57 57  
65 +(((
58 58  Follow the instructions of the electric energy meter to connect the phase line and the neutral line, and then connect 485A+ and 485B- to RS485A and RA485B of RS485-LN respectively.
67 +)))
59 59  
69 +(((
60 60  The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
71 +)))
61 61  
73 +(((
62 62  Power Source VIN to RS485-LN VIN+
75 +)))
63 63  
77 +(((
64 64  Power Source GND to RS485-LN VIN-
79 +)))
65 65  
81 +(((
66 66  Once there is power, the RS485-LN will be on.
83 +)))
67 67  
68 -[[image:https://wiki.dragino.com/images/thumb/1/15/Meter2.jpg/600px-Meter2.jpg||height="450" width="600"]]
85 +[[image:https://wiki.dragino.com/images/thumb/1/15/Meter2.jpg/600px-Meter2.jpg||height="433" width="577"]]
69 69  
70 70  Connection2
71 71  
72 -[[image:https://wiki.dragino.com/images/thumb/a/a5/Meter3.jpg/600px-Meter3.jpg||height="800" width="600"]]
73 73  
90 +[[image:https://wiki.dragino.com/images/thumb/a/a5/Meter3.jpg/600px-Meter3.jpg||height="712" width="534"]]
91 +
74 74  Connection3
75 75  
76 76  
... ... @@ -80,7 +80,10 @@
80 80  
81 81  [[image:https://wiki.dragino.com/images/thumb/3/35/Meter4.png/600px-Meter4.png||alt="Meter4.png" height="193" width="600"]]
82 82  
101 +(% class="box infomessage" %)
102 +(((
83 83  Example:AT+COMMAND1=01 03 00 00 00 01 84 0A
104 +)))
84 84  
85 85  * The first byte : slave address code (=001～247)
86 86  * The second byte : read register value function code
... ... @@ -88,9 +88,14 @@
88 88  * 5th and 6th bytes: Number of registers to read
89 89  * 7th and 8th bytes: CRC16 checksum from bytes 1 to 6.
90 90  
112 +(((
91 91  How to parse the reading of the return command of the parameter：
114 +)))
92 92  
116 +(% class="box infomessage" %)
117 +(((
93 93  Example:RETURN1：01 03 02 08 FD 7E 05
119 +)))
94 94  
95 95  * The first byte ARD: slave address code (=001～254)
96 96  * The second byte: Return to read function code
... ... @@ -99,22 +99,26 @@
99 99  * The 6th and 7th bytes: CRC16 checksum
100 100  * 08 FD is register data. Use short integer 16 bits to convert to decimal, get 2301, then 230.1V is the voltage.
101 101  
102 -
103 103  === 1.3.3 How to configure RS485-LN and parse output commands ===
104 104  
105 105  RS485-LN provides two configuration methods: AT COMMAND and DOWNLINK.
106 106  
107 -==== via AT COMMAND: ====
132 +==== 1.3.3.1 via AT COMMAND: ====
108 108  
109 -First, we can use AT+CFGDEV to get the return value, and we can also judge whether the input parameters are correct.
134 +First, we can use **AT+CFGDEV** to get the return value, and we can also judge whether the input parameters are correct.
110 110  
136 +(((
111 111  If the configured parameters and commands are incorrect, the return value is not obtained.
138 +)))
112 112  
113 113  [[image:https://wiki.dragino.com/images/b/bc/AT_COMMAND1.png||height="358" width="456"]]
114 114  
115 115  AT COMMAND
116 116  
117 -AT+DATACUTx : This command defines how to handle the return from AT+COMMANDx, max reture length is 40 bytes. AT+DATACUTx=a,b,c
144 +(% class="box infomessage" %)
145 +(((
146 + AT+DATACUTx : This command defines how to handle the return from AT+COMMANDx, max reture length is 40 bytes. AT+DATACUTx=a,b,c
147 +)))
118 118  
119 119  a: length for the return of AT+COMMAND
120 120  
... ... @@ -128,6 +128,7 @@
128 128  
129 129  PAYLOAD is available after the valid value is intercepted.
130 130  
161 +
131 131  [[image:https://wiki.dragino.com/images/3/3a/AT_COMMAND4.png||height="219" width="576"]]
132 132  
133 133  AT COMMAND
... ... @@ -134,29 +134,56 @@
134 134  
135 135  You can get configured PAYLOAD on TTN.
136 136  
168 +
137 137  [[image:https://wiki.dragino.com/images/thumb/c/c2/AT_COMMAND3.png/600px-AT_COMMAND3.png||height="138" width="600"]]
138 138  
171 +(((
139 139  AT COMMAND
173 +)))
140 140  
141 -Example: CMD1:Read current data with MODBUS command. address:0x03 AT+COMMAND1= 01 03 00 03 00 01,1
175 +(((
176 +
177 +)))
142 142  
179 +(((
180 +**Example**: CMD1:Read current data with MODBUS command. address:0x03 AT+COMMAND1= 01 03 00 03 00 01,1
181 +)))
182 +
183 +(((
143 143  RETURN1:01 03 02 00 02 39 85 00 00(return data)
185 +)))
144 144  
187 +(((
145 145  AT+DATACUT1:9,1,4+5+6+7 Take the return value 00 02 39 85 as the valid value of reading current data and used to splice payload.
189 +)))
146 146  
191 +(((
147 147  CMD2:Read voltage data with MODBUS command. address:0x00 AT+COMMAND2= 01 03 00 00 00 01,1
193 +)))
148 148  
195 +(((
149 149  RETURN2:01 03 02 08 DC BE 1D(return data)
197 +)))
150 150  
199 +(((
151 151  AT+DATACUT2:7,1,4+5 Take the return value 08 DC as the valid value of reading voltage data and used to splice payload.
201 +)))
152 152  
203 +(((
153 153  CMD3:Read total active energy data with MODBUS command. address:0x0031 AT+COMMAND3= 01 03 00 31 00 02,1
205 +)))
154 154  
207 +(((
155 155  RETURN3:01 03 04 00 00 00 44 FA 00(return data)
209 +)))
156 156  
211 +(((
157 157  AT+DATACUT3:9,1,4+5+6+7 Take the return value 00 00 00 44 as the valid value of reading total active energy data and used to splice payload.
213 +)))
158 158  
215 +(((
159 159  Payload:01 00 02 39 85 08 DC 00 00 00 44
217 +)))
160 160  
161 161  [[image:https://wiki.dragino.com/images/thumb/9/9b/AT_COMMAND10.png/600px-AT_COMMAND10.png||height="278" width="600"]]
162 162  
... ... @@ -164,58 +164,99 @@
164 164  
165 165  01 is device address,00 02 is the current, 08 DC is the voltage,00 00 00 44 is the total active energy.
166 166  
225 +
167 167  [[~[~[image:https://wiki.dragino.com/images/thumb/b/b8/AT_COMMAND11.png/600px-AT_COMMAND11.png~|~|height="271" width="600"~]~]>>url:https://wiki.dragino.com/index.php/File:AT_COMMAND11.png]]
168 168  
169 169  AT COMMAND
170 170  
171 -==== 1.3.3.1 via LoRaWAN DOWNLINK ====
172 172  
173 -[[image:https://wiki.dragino.com/images/thumb/f/fc/DOWNLINK_METER1.png/600px-DOWNLINK_METER1.png||height="423" width="600"]]
231 +==== 1.3.3.2 via LoRaWAN DOWNLINK ====
174 174  
233 +[[image:image-20220512104358-3.png]]
234 +
235 +(((
175 175  DOWNLINK
237 +)))
176 176  
177 -Type Code 0xAF
239 +(((
240 +
241 +)))
178 178  
243 +(((
244 +**Type Code 0xAF**
245 +)))
246 +
247 +(((
248 +(% class="box infomessage" %)
249 +(((
179 179  0xAF downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
251 +)))
252 +)))
180 180  
254 +(((
181 181  Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
256 +)))
182 182  
258 +(((
183 183  Format: AF MM NN LL XX XX XX XX YY
260 +)))
184 184  
262 +(((
185 185  Where:
264 +)))
186 186  
266 +(((
187 187  MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
268 +)))
188 188  
270 +(((
189 189  NN: 0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
272 +)))
190 190  
274 +(((
191 191  LL: The length of AT+COMMAND or AT+DATACUT command
276 +)))
192 192  
278 +(((
193 193  XX XX XX XX: AT+COMMAND or AT+DATACUT command
280 +)))
194 194  
282 +(((
195 195  YY: If YY=0, RS485-LN will execute the downlink command without uplink; if YY=1, RS485-LN
284 +)))
196 196  
286 +(((
197 197  will execute an uplink after got this command.
288 +)))
198 198  
290 +(((
199 199  Example:
292 +)))
200 200  
294 +(((
201 201  AF 03 01 06 0A 05 00 04 00 01 00: Same as AT+COMMAND3=0A 05 00 04 00 01,1
296 +)))
202 202  
203 203  [[image:https://wiki.dragino.com/images/thumb/4/45/DOWNLINK_METER2.png/600px-DOWNLINK_METER2.png||height="208" width="600"]]
204 204  
205 205  DOWNLINK
206 206  
302 +
207 207  [[~[~[image:https://wiki.dragino.com/images/thumb/2/20/DOWNLINK_METER3.png/600px-DOWNLINK_METER3.png~|~|height="105" width="600"~]~]>>url:https://wiki.dragino.com/index.php/File:DOWNLINK_METER3.png]]
208 208  
209 209  DOWNLINK
210 210  
307 +
211 211  [[image:https://wiki.dragino.com/images/thumb/2/27/DOWNLINK_METER4.png/600px-DOWNLINK_METER4.png||height="210" width="600"]]
212 212  
213 213  DOWNLINK
214 214  
312 +
215 215  [[~[~[image:https://wiki.dragino.com/images/thumb/3/39/DOWNLINK_METER5.png/600px-DOWNLINK_METER5.png~|~|height="176" width="600"~]~]>>url:https://wiki.dragino.com/index.php/File:DOWNLINK_METER5.png]]
216 216  
217 217  DOWNLINK
218 218  
317 +
219 219  [[image:https://wiki.dragino.com/images/thumb/a/a2/DOWNLINK_METER6.png/600px-DOWNLINK_METER6.png||height="365" width="600"]]
220 220  
221 221  DOWNLINK
... ... @@ -223,30 +223,47 @@
223 223  
224 224  === 1.3.4 How to configure and output commands for RS485 to USB ===
225 225  
325 +(((
226 226  This step is not necessary, it is just to show how to use a normal RS485 to USB adapter to connect to the meter to check the input and output. This can be used to test the connection and RS485 command of the meter without RS485-LN.
327 +)))
227 227  
329 +(((
228 228  First, connect the A+ and A- of the USB to the 485 A and 485 B of the energy meter.
331 +)))
229 229  
333 +(((
230 230  Open the serial port debugging, set the send and receive to HEX.
335 +)))
231 231  
337 +(((
232 232  Baud rate: 9600
339 +)))
233 233  
341 +(((
234 234  check digit: Even
343 +)))
235 235  
236 -[[image:https://wiki.dragino.com/images/thumb/8/8f/Usb_meter2.jpg/600px-Usb_meter2.jpg||height="800" width="600"]]
345 +[[image:https://wiki.dragino.com/images/thumb/8/8f/Usb_meter2.jpg/600px-Usb_meter2.jpg||height="725" width="544"]]
237 237  
238 238  USB
239 239  
240 -[[image:https://wiki.dragino.com/images/thumb/6/62/Usb_meter1.jpg/600px-Usb_meter1.jpg||height="800" width="600"]]
241 241  
350 +[[image:https://wiki.dragino.com/images/thumb/6/62/Usb_meter1.jpg/600px-Usb_meter1.jpg||height="728" width="546"]]
351 +
242 242  USB
243 243  
354 +
355 +(((
244 244  The configuration command is consistent with the AT command, input the hexadecimal command directly into the serial port, and the serial port will output the command.
357 +)))
245 245  
246 -Example:input：01 03 00 31 00 02 95 c4
359 +(((
360 +**Example:**  input：01 03 00 31 00 02 95 c4
361 +)))
247 247  
248 -{{{ output:01 03 04 00 00 00 42 7A 02
249 -}}}
363 +(((
364 + output：01 03 04 00 00 00 42 7A 02
365 +)))
250 250  
251 251  [[image:https://wiki.dragino.com/images/thumb/b/b3/Usb_meter3.jpg/600px-Usb_meter3.jpg||height="466" width="600"]]
252 252  
... ... @@ -256,21 +256,37 @@
256 256  
257 257  If users need to read the parameters of multiple energy meters, they need to modify the device address, because the default device address of each energy meter is 01.
258 258  
375 +(((
376 +(((
259 259  Set the device address according to the parameters in the appendix of the MODBUS communication protocol.
378 +)))
379 +)))
260 260  
261 261  [[image:https://wiki.dragino.com/images/thumb/1/1f/Double_meter3.png/600px-Double_meter3.png||alt="Double meter3.png" height="83" width="600"]]
262 262  
263 -Example:These two meters are examples of setting parameters and device addresses.
383 +**Example**:These two meters are examples of setting parameters and device addresses.
264 264  
265 -[[image:https://wiki.dragino.com/images/thumb/e/ee/Double_meter1.jpg/600px-Double_meter1.jpg||alt="Double meter1.jpg" height="800" width="600"]]
385 +[[image:https://wiki.dragino.com/images/thumb/e/ee/Double_meter1.jpg/600px-Double_meter1.jpg||alt="Double meter1.jpg" height="737" width="553"]]
266 266  
267 -[[image:https://wiki.dragino.com/images/thumb/7/72/Double_meter2.jpg/600px-Double_meter2.jpg||alt="Double meter2.jpg" height="800" width="600"]]
387 +[[image:https://wiki.dragino.com/images/thumb/7/72/Double_meter2.jpg/600px-Double_meter2.jpg||alt="Double meter2.jpg" height="733" width="550"]]
268 268  
389 +(((
390 +(((
269 269  First of all, since the default device address of the energy meter is 01, the configuration of two energy meters will conflict, so we first connect an energy meter and configure the device address.
392 +)))
393 +)))
270 270  
395 +(((
396 +(((
271 271  We can use AT+CFGDEV to set the device address.
398 +)))
399 +)))
272 272  
401 +(((
402 +(((
273 273  We modify the device address 01 of the first energy meter to 02.
404 +)))
405 +)))
274 274  
275 275  [[image:https://wiki.dragino.com/images/6/6b/Double_meter4.png||alt="Double meter4.png" height="141" width="456"]]
276 276  
... ... @@ -305,7 +305,6 @@
305 305  * 08 DF is the valid value of the meter with device address 02.
306 306  * 43 62 is the valid value of the meter with device address 01.
307 307  
308 -
309 309  == 1.4 Example 4: Circuit Breaker Remote Open Close ==
310 310  
311 311  This instruction is provided by Xavier Florensa Berenguer from [[NORIA GRUPO DE COMPRAS>>url:http://www.gruponovelec.com/]]. It is to show how to use RS485-LN to connect to SCHNEIDER SMART and Monitor and control your cabinet remotely with no wires and with Dragino RS485-LN LoRaWAN technology. The structure is like below:
... ... @@ -316,7 +316,6 @@
316 316  
317 317  * [[Circuit Breaker Remote Open Close>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Circuit_Breaker_Remote_Open_Close/]] : Configure Documen
318 318  
319 -
320 320  == 1.5 Example 5: SEM Three Energy Meter with RS485-BL or RS485-LN ==
321 321  
322 322  This instruction is provided by Xavier Florensa Berenguer from [[NORIA GRUPO DE COMPRAS>>url:http://www.gruponovelec.com/]]. It is to show how to use RS485-BL to connect to SEM Three Energy Meter and send the data to mobile phone for remote minitor. The structure is like below:
... ... @@ -325,7 +325,6 @@
325 325  
326 326  * [[Connect to SEM Three>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/SEM_Three_Energy_Meter/&file=SEM%20three%20and%20Dragino%20RS485-LN%20v1.pdf]] : Configure Document for RS485-LN
327 327  
328 -
329 329  == 1.6 Example 6:CEM C31 485-T1-MID Energy Meter with RS485-LN ==
330 330  
331 331  This instruction is provided by Xavier Florensa Berenguer from [[NORIA GRUPO DE COMPRAS>>url:http://www.gruponovelec.com/]]. It is to show how to use RS485-LN to connect to CEM C31 485-T1-MID and send the data for remote minitor. The structure is like below:
... ... @@ -332,7 +332,6 @@
332 332  
333 333  * [[CEM C31 485-T1-MID>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/ELECTRICAL%20CABINET/&file=ELECTRICAL%20CABINET%20READINGS.pdf]] : Configure Document For RS485-LN
334 334  
335 -
336 336  == 1.7 Example 7:Schneider Electric PLC M221 with RS485-BL ==
337 337  
338 338  [[image:https://wiki.dragino.com/images/thumb/9/97/PLC_M221.png/600px-PLC_M221.png||height="353" width="600"]]
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