Last modified by Karry Zhuang on 2024/07/11 11:58
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From version < 21.1 >
edited by Xiaoling
on 2022/05/27 09:33
To version < 1.8 >
edited by Xiaoling
on 2022/05/12 10:03
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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="297" width="534"]]
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="743" width="528"]](% style="display:none" %)
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
... ... @@ -33,20 +33,17 @@
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  
... ... @@ -60,42 +60,28 @@
60 60  This example describes a single-phase meter.This is the connection between the RS485-LN and the energy meter.
61 61  )))
62 62  
63 -[[image:image-20220527092419-5.png]]
52 +[[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 -(((
69 69  How to connect with Energy Meter：
70 -)))
71 71  
72 -(((
73 73  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.
74 -)))
75 75  
76 -(((
77 77  The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
78 -)))
79 79  
80 -(((
81 81  Power Source VIN to RS485-LN VIN+
82 -)))
83 83  
84 -(((
85 85  Power Source GND to RS485-LN VIN-
86 -)))
87 87  
88 -(((
89 89  Once there is power, the RS485-LN will be on.
90 -)))
91 91  
92 -[[image:image-20220527092514-6.png]]
68 +[[image:https://wiki.dragino.com/images/thumb/1/15/Meter2.jpg/600px-Meter2.jpg||height="450" width="600"]]
93 93  
94 94  Connection2
95 95  
72 +[[image:https://wiki.dragino.com/images/thumb/a/a5/Meter3.jpg/600px-Meter3.jpg||height="800" width="600"]]
96 96  
97 -[[image:image-20220527092555-7.png]]
98 -
99 99  Connection3
100 100  
101 101  
... ... @@ -103,12 +103,11 @@
103 103  
104 104  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.
105 105  
106 -[[image:image-20220527092629-8.png]]
81 +[[image:https://wiki.dragino.com/images/thumb/3/35/Meter4.png/600px-Meter4.png||alt="Meter4.png" height="193" width="600"]]
107 107  
108 -
109 109  (% class="box infomessage" %)
110 110  (((
111 -**Example:** AT+COMMAND1=01 03 00 00 00 01 84 0A
85 +Example:AT+COMMAND1=01 03 00 00 00 01 84 0A
112 112  )))
113 113  
114 114  * The first byte : slave address code (=001～247)
... ... @@ -117,13 +117,11 @@
117 117  * 5th and 6th bytes: Number of registers to read
118 118  * 7th and 8th bytes: CRC16 checksum from bytes 1 to 6.
119 119  
120 -(((
121 121  How to parse the reading of the return command of the parameter：
122 -)))
123 123  
124 124  (% class="box infomessage" %)
125 125  (((
126 -**Example:** RETURN1：01 03 02 08 FD 7E 05
98 +Example:RETURN1：01 03 02 08 FD 7E 05
127 127  )))
128 128  
129 129  * The first byte ARD: slave address code (=001～254)
... ... @@ -133,16 +133,11 @@
133 133  * The 6th and 7th bytes: CRC16 checksum
134 134  * 08 FD is register data. Use short integer 16 bits to convert to decimal, get 2301, then 230.1V is the voltage.
135 135  
136 -(% class="wikigeneratedid" %)
137 -(((
138 -
139 -)))
140 140  
141 141  === 1.3.3 How to configure RS485-LN and parse output commands ===
142 142  
143 143  RS485-LN provides two configuration methods: AT COMMAND and DOWNLINK.
144 144  
145 -
146 146  ==== 1.3.3.1 via AT COMMAND: ====
147 147  
148 148  First, we can use **AT+CFGDEV** to get the return value, and we can also judge whether the input parameters are correct.
... ... @@ -151,14 +151,13 @@
151 151  If the configured parameters and commands are incorrect, the return value is not obtained.
152 152  )))
153 153  
154 -[[image:image-20220527092748-9.png]]
121 +[[image:https://wiki.dragino.com/images/b/bc/AT_COMMAND1.png||height="358" width="456"]]
155 155  
156 -AT COMMAND
123 +**AT COMMAND**
157 157  
158 -
159 159  (% class="box infomessage" %)
160 160  (((
161 - AT+DATACUTx : This command defines how to handle the return from AT+COMMANDx, max reture length is 40 bytes. AT+DATACUTx=a,b,c
127 +AT+DATACUTx : This command defines how to handle the return from AT+COMMANDx, max reture length is 40 bytes. AT+DATACUTx=a,b,c
162 162  )))
163 163  
164 164  a: length for the return of AT+COMMAND
... ... @@ -167,149 +167,87 @@
167 167  
168 168  c: define the position for valid value.
169 169  
170 -[[image:image-20220527092936-10.png]]
136 +[[image:https://wiki.dragino.com/images/7/7d/AT_COMMAND2.png||height="278" width="477"]]
171 171  
172 172  AT COMMAND
173 173  
174 -
175 175  PAYLOAD is available after the valid value is intercepted.
176 176  
177 177  
178 -[[image:image-20220527093059-11.png]]
143 +[[image:https://wiki.dragino.com/images/3/3a/AT_COMMAND4.png||height="219" width="576"]]
179 179  
180 180  AT COMMAND
181 181  
182 -
183 183  You can get configured PAYLOAD on TTN.
184 184  
185 -[[image:image-20220527093133-12.png]]
186 186  
187 -(((
150 +[[image:https://wiki.dragino.com/images/thumb/c/c2/AT_COMMAND3.png/600px-AT_COMMAND3.png||height="138" width="600"]]
151 +
188 188  AT COMMAND
189 -)))
190 190  
191 -(((
192 -
193 -)))
194 -
195 -(((
196 196  **Example**: CMD1:Read current data with MODBUS command. address:0x03 AT+COMMAND1= 01 03 00 03 00 01,1
197 -)))
198 198  
199 -(((
200 200  RETURN1:01 03 02 00 02 39 85 00 00(return data)
201 -)))
202 202  
203 -(((
204 204  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.
205 -)))
206 206  
207 -(((
208 208  CMD2:Read voltage data with MODBUS command. address:0x00 AT+COMMAND2= 01 03 00 00 00 01,1
209 -)))
210 210  
211 -(((
212 212  RETURN2:01 03 02 08 DC BE 1D(return data)
213 -)))
214 214  
215 -(((
216 216  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.
217 -)))
218 218  
219 -(((
220 220  CMD3:Read total active energy data with MODBUS command. address:0x0031 AT+COMMAND3= 01 03 00 31 00 02,1
221 -)))
222 222  
223 -(((
224 224  RETURN3:01 03 04 00 00 00 44 FA 00(return data)
225 -)))
226 226  
227 -(((
228 228  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.
229 -)))
230 230  
231 -(((
232 232  Payload:01 00 02 39 85 08 DC 00 00 00 44
233 -)))
234 234  
235 -[[image:image-20220527093204-13.png]]
174 +[[image:https://wiki.dragino.com/images/thumb/9/9b/AT_COMMAND10.png/600px-AT_COMMAND10.png||height="278" width="600"]]
236 236  
237 237  AT COMMAND
238 238  
239 -
240 240  01 is device address,00 02 is the current, 08 DC is the voltage,00 00 00 44 is the total active energy.
241 241  
242 -[[image:image-20220527093251-14.png]]
243 243  
181 +[[~[~[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]]
182 +
244 244  AT COMMAND
245 245  
246 246  
247 247  ==== 1.3.3.2 via LoRaWAN DOWNLINK ====
248 248  
249 -[[image:image-20220512104358-3.png]]
188 +[[image:https://wiki.dragino.com/images/thumb/f/fc/DOWNLINK_METER1.png/600px-DOWNLINK_METER1.png||height="423" width="600"]]
250 250  
251 -(((
252 252  DOWNLINK
253 -)))
254 254  
255 -(((
256 -
257 -)))
192 +Type Code 0xAF
258 258  
259 -(((
260 -**Type Code 0xAF**
261 -)))
262 -
263 -(((
264 -(% class="box infomessage" %)
265 -(((
266 266  0xAF downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
267 -)))
268 -)))
269 269  
270 -(((
271 271  Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
272 -)))
273 273  
274 -(((
275 275  Format: AF MM NN LL XX XX XX XX YY
276 -)))
277 277  
278 -(((
279 279  Where:
280 -)))
281 281  
282 -(((
283 283  MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
284 -)))
285 285  
286 -(((
287 287  NN: 0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
288 -)))
289 289  
290 -(((
291 291  LL: The length of AT+COMMAND or AT+DATACUT command
292 -)))
293 293  
294 -(((
295 295  XX XX XX XX: AT+COMMAND or AT+DATACUT command
296 -)))
297 297  
298 -(((
299 299  YY: If YY=0, RS485-LN will execute the downlink command without uplink; if YY=1, RS485-LN
300 -)))
301 301  
302 -(((
303 303  will execute an uplink after got this command.
304 -)))
305 305  
306 -(((
307 307  Example:
308 -)))
309 309  
310 -(((
311 311  AF 03 01 06 0A 05 00 04 00 01 00: Same as AT+COMMAND3=0A 05 00 04 00 01,1
312 -)))
313 313  
314 314  [[image:https://wiki.dragino.com/images/thumb/4/45/DOWNLINK_METER2.png/600px-DOWNLINK_METER2.png||height="208" width="600"]]
315 315  
... ... @@ -330,7 +330,6 @@
330 330  
331 331  DOWNLINK
332 332  
333 -
334 334  [[image:https://wiki.dragino.com/images/thumb/a/a2/DOWNLINK_METER6.png/600px-DOWNLINK_METER6.png||height="365" width="600"]]
335 335  
336 336  DOWNLINK
... ... @@ -338,47 +338,30 @@
338 338  
339 339  === 1.3.4 How to configure and output commands for RS485 to USB ===
340 340  
341 -(((
342 342  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.
343 -)))
344 344  
345 -(((
346 346  First, connect the A+ and A- of the USB to the 485 A and 485 B of the energy meter.
347 -)))
348 348  
349 -(((
350 350  Open the serial port debugging, set the send and receive to HEX.
351 -)))
352 352  
353 -(((
354 354  Baud rate: 9600
355 -)))
356 356  
357 -(((
358 358  check digit: Even
359 -)))
360 360  
361 -[[image:https://wiki.dragino.com/images/thumb/8/8f/Usb_meter2.jpg/600px-Usb_meter2.jpg||height="725" width="544"]]
254 +[[image:https://wiki.dragino.com/images/thumb/8/8f/Usb_meter2.jpg/600px-Usb_meter2.jpg||height="800" width="600"]]
362 362  
363 363  USB
364 364  
258 +[[image:https://wiki.dragino.com/images/thumb/6/62/Usb_meter1.jpg/600px-Usb_meter1.jpg||height="800" width="600"]]
365 365  
366 -[[image:https://wiki.dragino.com/images/thumb/6/62/Usb_meter1.jpg/600px-Usb_meter1.jpg||height="728" width="546"]]
367 -
368 368  USB
369 369  
370 -
371 -(((
372 372  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.
373 -)))
374 374  
375 -(((
376 -**Example:**  input：01 03 00 31 00 02 95 c4
377 -)))
264 +Example:input：01 03 00 31 00 02 95 c4
378 378  
379 -(((
380 - output：01 03 04 00 00 00 42 7A 02
381 -)))
266 +{{{ output:01 03 04 00 00 00 42 7A 02
267 +}}}
382 382  
383 383  [[image:https://wiki.dragino.com/images/thumb/b/b3/Usb_meter3.jpg/600px-Usb_meter3.jpg||height="466" width="600"]]
384 384  
... ... @@ -388,37 +388,21 @@
388 388  
389 389  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.
390 390  
391 -(((
392 -(((
393 393  Set the device address according to the parameters in the appendix of the MODBUS communication protocol.
394 -)))
395 -)))
396 396  
397 397  [[image:https://wiki.dragino.com/images/thumb/1/1f/Double_meter3.png/600px-Double_meter3.png||alt="Double meter3.png" height="83" width="600"]]
398 398  
399 -**Example**:These two meters are examples of setting parameters and device addresses.
281 +Example:These two meters are examples of setting parameters and device addresses.
400 400  
401 -[[image:https://wiki.dragino.com/images/thumb/e/ee/Double_meter1.jpg/600px-Double_meter1.jpg||alt="Double meter1.jpg" height="737" width="553"]]
283 +[[image:https://wiki.dragino.com/images/thumb/e/ee/Double_meter1.jpg/600px-Double_meter1.jpg||alt="Double meter1.jpg" height="800" width="600"]]
402 402  
403 -[[image:https://wiki.dragino.com/images/thumb/7/72/Double_meter2.jpg/600px-Double_meter2.jpg||alt="Double meter2.jpg" height="733" width="550"]]
285 +[[image:https://wiki.dragino.com/images/thumb/7/72/Double_meter2.jpg/600px-Double_meter2.jpg||alt="Double meter2.jpg" height="800" width="600"]]
404 404  
405 -(((
406 -(((
407 407  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.
408 -)))
409 -)))
410 410  
411 -(((
412 -(((
413 413  We can use AT+CFGDEV to set the device address.
414 -)))
415 -)))
416 416  
417 -(((
418 -(((
419 419  We modify the device address 01 of the first energy meter to 02.
420 -)))
421 -)))
422 422  
423 423  [[image:https://wiki.dragino.com/images/6/6b/Double_meter4.png||alt="Double meter4.png" height="141" width="456"]]
424 424  
... ... @@ -453,6 +453,7 @@
453 453  * 08 DF is the valid value of the meter with device address 02.
454 454  * 43 62 is the valid value of the meter with device address 01.
455 455  
326 +
456 456  == 1.4 Example 4: Circuit Breaker Remote Open Close ==
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-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:
... ... @@ -463,6 +463,7 @@
463 463  
464 464  * [[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
465 465  
337 +
466 466  == 1.5 Example 5: SEM Three Energy Meter with RS485-BL or RS485-LN ==
467 467  
468 468  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:
... ... @@ -471,6 +471,7 @@
471 471  
472 472  * [[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
473 473  
346 +
474 474  == 1.6 Example 6:CEM C31 485-T1-MID Energy Meter with RS485-LN ==
475 475  
476 476  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:
... ... @@ -477,6 +477,7 @@
477 477  
478 478  * [[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
479 479  
353 +
480 480  == 1.7 Example 7:Schneider Electric PLC M221 with RS485-BL ==
481 481  
482 482  [[image:https://wiki.dragino.com/images/thumb/9/97/PLC_M221.png/600px-PLC_M221.png||height="353" width="600"]]
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