Last modified by Karry Zhuang on 2024/07/11 11:58
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From version < 10.2 >
edited by Xiaoling
on 2022/05/27 09:23
To version < 1.2 >
edited by Xiaoling
on 2022/05/12 09:46
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1 -(% class="wikigeneratedid" %)
2 - **Contents:**
3 -
4 -{{toc/}}
5 -
6 6  = 1. Introduction =
7 7  
8 8  This article provide the examples for RS485-LN to connect to different type of RS485 sensors.
... ... @@ -11,17 +11,14 @@
11 11  
12 12  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 Relay and VFD and communicate with Mobile. The structure is like below:
13 13  
14 -[[image:image-20220527091852-1.png]]
9 +[[image:https://wiki.dragino.com/images/thumb/5/5c/RS485_01.png/600px-RS485_01.png||height="334" width="600"]]
15 15  
16 16  Connection
17 17  
13 +[[image:https://wiki.dragino.com/images/thumb/f/f2/RS485_02.png/600px-RS485_02.png||height="844" width="600"]]
18 18  
19 -
20 -[[image:image-20220527091942-2.png]](% style="display:none" %)
21 -
22 22  Connection
23 23  
24 -
25 25  Related documents:
26 26  
27 27  * [[Solar Pump with Dragino>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Relay_VFD/]] : System Structure
... ... @@ -33,81 +33,60 @@
33 33  
34 34  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:
35 35  
36 -[[image:image-20220527092058-3.png]]
28 +[[image:https://wiki.dragino.com/images/thumb/3/34/RS485_02_1.png/600px-RS485_02_1.png||height="364" width="600"]]
37 37  
38 38  Connection
39 39  
32 +[[image:https://wiki.dragino.com/images/thumb/5/5f/RS485_02_2.png/600px-RS485_02_2.png||height="337" width="600"]]
40 40  
41 -[[image:image-20220527092146-4.png]]
42 -
43 43  Connection
44 44  
45 45  * [[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
46 46  * [[Dragino Solution in Farm>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/&file=Dragino%20on%20Farms.pptx]]
47 47  
48 -(% class="wikigeneratedid" %)
49 -== ==
50 50  
51 51  == 1.3 Example3: Use RS485-LN with energy meters ==
52 52  
53 53  === 1.3.1 OverView ===
54 54  
55 -(((
56 -**Note**：The specifications of each energy meter are different, please refer to your own energy meter specifications.
57 -)))
44 +Note：The specifications of each energy meter are different, please refer to your own energy meter specifications.
58 58  
59 -(((
60 60  This example describes a single-phase meter.This is the connection between the RS485-LN and the energy meter.
61 -)))
62 62  
63 -[[image:https://wiki.dragino.com/images/thumb/f/f4/Meter1.jpg/600px-Meter1.jpg||height="726" width="545"]]
48 +[[image:https://wiki.dragino.com/images/thumb/f/f4/Meter1.jpg/600px-Meter1.jpg||height="800" width="600"]]
64 64  
65 65  Connection1
66 66  
67 -(((
68 68  How to connect with Energy Meter：
69 -)))
70 70  
71 -(((
72 72  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.
73 -)))
74 74  
75 -(((
76 76  The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
77 -)))
78 78  
79 -(((
80 80  Power Source VIN to RS485-LN VIN+
81 -)))
82 82  
83 -(((
84 84  Power Source GND to RS485-LN VIN-
85 -)))
86 86  
87 -(((
88 88  Once there is power, the RS485-LN will be on.
89 -)))
90 90  
91 -[[image:https://wiki.dragino.com/images/thumb/1/15/Meter2.jpg/600px-Meter2.jpg||height="433" width="577"]]
64 +[[image:https://wiki.dragino.com/images/thumb/1/15/Meter2.jpg/600px-Meter2.jpg||height="450" width="600"]]
92 92  
93 93  Connection2
94 94  
68 +[[image:https://wiki.dragino.com/images/thumb/a/a5/Meter3.jpg/600px-Meter3.jpg||height="800" width="600"]]
95 95  
96 -[[image:https://wiki.dragino.com/images/thumb/a/a5/Meter3.jpg/600px-Meter3.jpg||height="712" width="534"]]
97 -
98 98  Connection3
99 99  
100 100  
101 101  === 1.3.2 How to use the parameters of the energy meter and MODBUS commands ===
102 102  
103 -If the user needs to read the parameters of the electric energy meter and use the modbus command,please refer to the appendix of the MODBUS communication protocol in the user manual of the energy meter.
75 +If the user needs to read the parameters of the electric energy meter and use the modbus command,
104 104  
77 +please refer to the appendix of the MODBUS communication protocol in the user manual of the energy meter.
78 +
105 105  [[image:https://wiki.dragino.com/images/thumb/3/35/Meter4.png/600px-Meter4.png||alt="Meter4.png" height="193" width="600"]]
106 106  
107 -(% class="box infomessage" %)
108 -(((
109 109  Example:AT+COMMAND1=01 03 00 00 00 01 84 0A
110 -)))
111 111  
112 112  * The first byte : slave address code (=001～247)
113 113  * The second byte : read register value function code
... ... @@ -115,14 +115,9 @@
115 115  * 5th and 6th bytes: Number of registers to read
116 116  * 7th and 8th bytes: CRC16 checksum from bytes 1 to 6.
117 117  
118 -(((
119 119  How to parse the reading of the return command of the parameter：
120 -)))
121 121  
122 -(% class="box infomessage" %)
123 -(((
124 124  Example:RETURN1：01 03 02 08 FD 7E 05
125 -)))
126 126  
127 127  * The first byte ARD: slave address code (=001～254)
128 128  * The second byte: Return to read function code
... ... @@ -131,26 +131,22 @@
131 131  * The 6th and 7th bytes: CRC16 checksum
132 132  * 08 FD is register data. Use short integer 16 bits to convert to decimal, get 2301, then 230.1V is the voltage.
133 133  
100 +
134 134  === 1.3.3 How to configure RS485-LN and parse output commands ===
135 135  
136 136  RS485-LN provides two configuration methods: AT COMMAND and DOWNLINK.
137 137  
138 -==== 1.3.3.1 via AT COMMAND: ====
105 +==== via AT COMMAND: ====
139 139  
140 -First, we can use **AT+CFGDEV** to get the return value, and we can also judge whether the input parameters are correct.
107 +First, we can use AT+CFGDEV to get the return value, and we can also judge whether the input parameters are correct.
141 141  
142 -(((
143 143  If the configured parameters and commands are incorrect, the return value is not obtained.
144 -)))
145 145  
146 146  [[image:https://wiki.dragino.com/images/b/bc/AT_COMMAND1.png||height="358" width="456"]]
147 147  
148 148  AT COMMAND
149 149  
150 -(% class="box infomessage" %)
151 -(((
152 - AT+DATACUTx : This command defines how to handle the return from AT+COMMANDx, max reture length is 40 bytes. AT+DATACUTx=a,b,c
153 -)))
115 +AT+DATACUTx : This command defines how to handle the return from AT+COMMANDx, max reture length is 40 bytes. AT+DATACUTx=a,b,c
154 154  
155 155  a: length for the return of AT+COMMAND
156 156  
... ... @@ -164,7 +164,6 @@
164 164  
165 165  PAYLOAD is available after the valid value is intercepted.
166 166  
167 -
168 168  [[image:https://wiki.dragino.com/images/3/3a/AT_COMMAND4.png||height="219" width="576"]]
169 169  
170 170  AT COMMAND
... ... @@ -171,56 +171,29 @@
171 171  
172 172  You can get configured PAYLOAD on TTN.
173 173  
174 -
175 175  [[image:https://wiki.dragino.com/images/thumb/c/c2/AT_COMMAND3.png/600px-AT_COMMAND3.png||height="138" width="600"]]
176 176  
177 -(((
178 178  AT COMMAND
179 -)))
180 180  
181 -(((
182 -
183 -)))
139 +Example: CMD1:Read current data with MODBUS command. address:0x03 AT+COMMAND1= 01 03 00 03 00 01,1
184 184  
185 -(((
186 -**Example**: CMD1:Read current data with MODBUS command. address:0x03 AT+COMMAND1= 01 03 00 03 00 01,1
187 -)))
188 -
189 -(((
190 190  RETURN1:01 03 02 00 02 39 85 00 00(return data)
191 -)))
192 192  
193 -(((
194 194  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.
195 -)))
196 196  
197 -(((
198 198  CMD2:Read voltage data with MODBUS command. address:0x00 AT+COMMAND2= 01 03 00 00 00 01,1
199 -)))
200 200  
201 -(((
202 202  RETURN2:01 03 02 08 DC BE 1D(return data)
203 -)))
204 204  
205 -(((
206 206  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.
207 -)))
208 208  
209 -(((
210 210  CMD3:Read total active energy data with MODBUS command. address:0x0031 AT+COMMAND3= 01 03 00 31 00 02,1
211 -)))
212 212  
213 -(((
214 214  RETURN3:01 03 04 00 00 00 44 FA 00(return data)
215 -)))
216 216  
217 -(((
218 218  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.
219 -)))
220 220  
221 -(((
222 222  Payload:01 00 02 39 85 08 DC 00 00 00 44
223 -)))
224 224  
225 225  [[image:https://wiki.dragino.com/images/thumb/9/9b/AT_COMMAND10.png/600px-AT_COMMAND10.png||height="278" width="600"]]
226 226  
... ... @@ -228,99 +228,58 @@
228 228  
229 229  01 is device address,00 02 is the current, 08 DC is the voltage,00 00 00 44 is the total active energy.
230 230  
231 -
232 232  [[~[~[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]]
233 233  
234 234  AT COMMAND
235 235  
169 +==== 1.3.3.1 via LoRaWAN DOWNLINK ====
236 236  
237 -==== 1.3.3.2 via LoRaWAN DOWNLINK ====
171 +[[image:https://wiki.dragino.com/images/thumb/f/fc/DOWNLINK_METER1.png/600px-DOWNLINK_METER1.png||height="423" width="600"]]
238 238  
239 -[[image:image-20220512104358-3.png]]
240 -
241 -(((
242 242  DOWNLINK
243 -)))
244 244  
245 -(((
246 -
247 -)))
175 +Type Code 0xAF
248 248  
249 -(((
250 -**Type Code 0xAF**
251 -)))
252 -
253 -(((
254 -(% class="box infomessage" %)
255 -(((
256 256  0xAF downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
257 -)))
258 -)))
259 259  
260 -(((
261 261  Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
262 -)))
263 263  
264 -(((
265 265  Format: AF MM NN LL XX XX XX XX YY
266 -)))
267 267  
268 -(((
269 269  Where:
270 -)))
271 271  
272 -(((
273 273  MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
274 -)))
275 275  
276 -(((
277 277  NN: 0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
278 -)))
279 279  
280 -(((
281 281  LL: The length of AT+COMMAND or AT+DATACUT command
282 -)))
283 283  
284 -(((
285 285  XX XX XX XX: AT+COMMAND or AT+DATACUT command
286 -)))
287 287  
288 -(((
289 289  YY: If YY=0, RS485-LN will execute the downlink command without uplink; if YY=1, RS485-LN
290 -)))
291 291  
292 -(((
293 293  will execute an uplink after got this command.
294 -)))
295 295  
296 -(((
297 297  Example:
298 -)))
299 299  
300 -(((
301 301  AF 03 01 06 0A 05 00 04 00 01 00: Same as AT+COMMAND3=0A 05 00 04 00 01,1
302 -)))
303 303  
304 304  [[image:https://wiki.dragino.com/images/thumb/4/45/DOWNLINK_METER2.png/600px-DOWNLINK_METER2.png||height="208" width="600"]]
305 305  
306 306  DOWNLINK
307 307  
308 -
309 309  [[~[~[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]]
310 310  
311 311  DOWNLINK
312 312  
313 -
314 314  [[image:https://wiki.dragino.com/images/thumb/2/27/DOWNLINK_METER4.png/600px-DOWNLINK_METER4.png||height="210" width="600"]]
315 315  
316 316  DOWNLINK
317 317  
318 -
319 319  [[~[~[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]]
320 320  
321 321  DOWNLINK
322 322  
323 -
324 324  [[image:https://wiki.dragino.com/images/thumb/a/a2/DOWNLINK_METER6.png/600px-DOWNLINK_METER6.png||height="365" width="600"]]
325 325  
326 326  DOWNLINK
... ... @@ -328,47 +328,30 @@
328 328  
329 329  === 1.3.4 How to configure and output commands for RS485 to USB ===
330 330  
331 -(((
332 332  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.
333 -)))
334 334  
335 -(((
336 336  First, connect the A+ and A- of the USB to the 485 A and 485 B of the energy meter.
337 -)))
338 338  
339 -(((
340 340  Open the serial port debugging, set the send and receive to HEX.
341 -)))
342 342  
343 -(((
344 344  Baud rate: 9600
345 -)))
346 346  
347 -(((
348 348  check digit: Even
349 -)))
350 350  
351 -[[image:https://wiki.dragino.com/images/thumb/8/8f/Usb_meter2.jpg/600px-Usb_meter2.jpg||height="725" width="544"]]
234 +[[image:https://wiki.dragino.com/images/thumb/8/8f/Usb_meter2.jpg/600px-Usb_meter2.jpg||height="800" width="600"]]
352 352  
353 353  USB
354 354  
238 +[[image:https://wiki.dragino.com/images/thumb/6/62/Usb_meter1.jpg/600px-Usb_meter1.jpg||height="800" width="600"]]
355 355  
356 -[[image:https://wiki.dragino.com/images/thumb/6/62/Usb_meter1.jpg/600px-Usb_meter1.jpg||height="728" width="546"]]
357 -
358 358  USB
359 359  
360 -
361 -(((
362 362  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.
363 -)))
364 364  
365 -(((
366 -**Example:**  input：01 03 00 31 00 02 95 c4
367 -)))
244 +Example:input：01 03 00 31 00 02 95 c4
368 368  
369 -(((
370 - output：01 03 04 00 00 00 42 7A 02
371 -)))
246 +{{{ output:01 03 04 00 00 00 42 7A 02
247 +}}}
372 372  
373 373  [[image:https://wiki.dragino.com/images/thumb/b/b3/Usb_meter3.jpg/600px-Usb_meter3.jpg||height="466" width="600"]]
374 374  
... ... @@ -378,37 +378,21 @@
378 378  
379 379  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.
380 380  
381 -(((
382 -(((
383 383  Set the device address according to the parameters in the appendix of the MODBUS communication protocol.
384 -)))
385 -)))
386 386  
387 387  [[image:https://wiki.dragino.com/images/thumb/1/1f/Double_meter3.png/600px-Double_meter3.png||alt="Double meter3.png" height="83" width="600"]]
388 388  
389 -**Example**:These two meters are examples of setting parameters and device addresses.
261 +Example:These two meters are examples of setting parameters and device addresses.
390 390  
391 -[[image:https://wiki.dragino.com/images/thumb/e/ee/Double_meter1.jpg/600px-Double_meter1.jpg||alt="Double meter1.jpg" height="737" width="553"]]
263 +[[image:https://wiki.dragino.com/images/thumb/e/ee/Double_meter1.jpg/600px-Double_meter1.jpg||alt="Double meter1.jpg" height="800" width="600"]]
392 392  
393 -[[image:https://wiki.dragino.com/images/thumb/7/72/Double_meter2.jpg/600px-Double_meter2.jpg||alt="Double meter2.jpg" height="733" width="550"]]
265 +[[image:https://wiki.dragino.com/images/thumb/7/72/Double_meter2.jpg/600px-Double_meter2.jpg||alt="Double meter2.jpg" height="800" width="600"]]
394 394  
395 -(((
396 -(((
397 397  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.
398 -)))
399 -)))
400 400  
401 -(((
402 -(((
403 403  We can use AT+CFGDEV to set the device address.
404 -)))
405 -)))
406 406  
407 -(((
408 -(((
409 409  We modify the device address 01 of the first energy meter to 02.
410 -)))
411 -)))
412 412  
413 413  [[image:https://wiki.dragino.com/images/6/6b/Double_meter4.png||alt="Double meter4.png" height="141" width="456"]]
414 414  
... ... @@ -443,6 +443,7 @@
443 443  * 08 DF is the valid value of the meter with device address 02.
444 444  * 43 62 is the valid value of the meter with device address 01.
445 445  
306 +
446 446  == 1.4 Example 4: Circuit Breaker Remote Open Close ==
447 447  
448 448  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:
... ... @@ -453,6 +453,7 @@
453 453  
454 454  * [[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
455 455  
317 +
456 456  == 1.5 Example 5: SEM Three Energy Meter with RS485-BL or RS485-LN ==
457 457  
458 458  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:
... ... @@ -461,6 +461,7 @@
461 461  
462 462  * [[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
463 463  
326 +
464 464  == 1.6 Example 6:CEM C31 485-T1-MID Energy Meter with RS485-LN ==
465 465  
466 466  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:
... ... @@ -467,6 +467,7 @@
467 467  
468 468  * [[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
469 469  
333 +
470 470  == 1.7 Example 7:Schneider Electric PLC M221 with RS485-BL ==
471 471  
472 472  [[image:https://wiki.dragino.com/images/thumb/9/97/PLC_M221.png/600px-PLC_M221.png||height="353" width="600"]]
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