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1 1  (% class="wikigeneratedid" %)
2 - **Contents:**
2 + ** Table of** **Contents:**
3 3  
4 4  {{toc/}}
5 5  
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10 10  
11 11  = **1. Introduction** =
12 12  
13 +
13 13  This article provide the examples for RS485-LN to connect to different type of RS485 sensors.
14 14  
15 15  
16 16  == **1.1 Example 1: Connect to Leak relay and VFD** ==
17 17  
19 +
18 18  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:
19 19  
20 20  [[image:image-20220527091852-1.png]]
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36 36  
37 37  
38 38  
41 +
39 39  == **1.2 Example 2: Connect to Pulse Counter** ==
40 40  
44 +
41 41  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:
42 42  
47 +
43 43  [[image:image-20220527092058-3.png]]
44 44  
45 45  Connection
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50 50  
51 51  Connection
52 52  
53 -* [[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
58 +
59 +* Configure Document: [[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/]]
54 54  * [[Dragino Solution in Farm>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/&file=Dragino%20on%20Farms.pptx]]
55 55  
56 -== ==
57 57  
63 +
64 +
58 58  == **1.3 Example3: Use RS485-LN with energy meters** ==
59 59  
60 60  === **1.3.1 OverView** ===
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72 72  Connection1
73 73  
74 74  
82 +
75 75  (((
76 76  How to connect with Energy Meter：
77 77  )))
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101 101  Connection2
102 102  
103 103  
112 +
104 104  [[image:image-20220527092555-7.png]]
105 105  
106 106  Connection3
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110 110  
111 111  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.
112 112  
113 -[[image:image-20220527092629-8.png]]
122 +[[image:image-20220601143257-10.png]]
114 114  
115 115  
116 116  (% class="box infomessage" %)
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158 158  If the configured parameters and commands are incorrect, the return value is not obtained.
159 159  )))
160 160  
161 -[[image:image-20220527092748-9.png]]
170 +[[image:image-20220601143201-9.png]]
162 162  
163 163  AT COMMAND
164 164  
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168 168   AT+DATACUTx : This command defines how to handle the return from AT+COMMANDx, max reture length is 40 bytes. AT+DATACUTx=a,b,c
169 169  )))
170 170  
171 -a: length for the return of AT+COMMAND
180 +a:  length for the return of AT+COMMAND
172 172  
173 -b:1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.
182 +b: 1: grab valid value by byte, max 6 bytes;  2: grab valid value by bytes section, max 3 sections.
174 174  
175 -c: define the position for valid value.
184 +c:  define the position for valid value.
176 176  
177 -[[image:image-20220527092936-10.png]]
186 +[[image:image-20220601143115-8.png]]
178 178  
179 179  AT COMMAND
180 180  
181 181  
191 +
182 182  PAYLOAD is available after the valid value is intercepted.
183 183  
184 184  
185 -[[image:image-20220527093059-11.png]]
195 +[[image:image-20220601143046-7.png]]
186 186  
187 187  AT COMMAND
188 188  
189 189  
200 +
190 190  You can get configured PAYLOAD on TTN.
191 191  
192 -[[image:image-20220527093133-12.png]]
203 +[[image:image-20220601143519-1.png]]
193 193  
194 194  (((
195 195  AT COMMAND
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245 245  Payload:01 00 02 39 85 08 DC 00 00 00 44
246 246  )))
247 247  
248 -[[image:image-20220527093204-13.png]]
259 +[[image:image-20220601142936-6.png]]
249 249  
250 250  AT COMMAND
251 251  
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252 252  
253 253  (% style="color:#4f81bd" %)**01 is device address,00 02 is the current, 08 DC is the voltage,00 00 00 44 is the total active energy.**
254 254  
255 -[[image:image-20220527093251-14.png]]
256 256  
267 +
268 +[[image:image-20220601143642-2.png]]
269 +
257 257  AT COMMAND
258 258  
259 259  
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317 317  )))
318 318  
319 319  (((
333 +
334 +
320 320  (% style="color:#4f81bd" %)**Example:**
321 321  )))
322 322  
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324 324  **AF 03 01 06 0A 05 00 04 00 01 00**: Same as AT+COMMAND3=0A 05 00 04 00 01,1
325 325  )))
326 326  
327 -[[image:image-20220527093430-16.png]]
342 +[[image:image-20220601144149-6.png]]
328 328  
329 329  DOWNLINK
330 330  
331 331  
332 -[[image:image-20220527093508-17.png]]
333 333  
348 +[[image:image-20220601143803-3.png]]
349 +
334 334  DOWNLINK
335 335  
336 336  
337 -[[image:image-20220527093530-18.png]]
338 338  
354 +[[image:image-20220601144053-5.png]]
355 +
339 339  DOWNLINK
340 340  
341 341  
342 -[[image:image-20220527093607-19.png]]
343 343  
360 +[[image:image-20220601143921-4.png]]
361 +
344 344  DOWNLINK
345 345  
346 346  
347 -[[image:image-20220527093628-20.png]]
348 348  
366 +[[image:image-20220601142805-5.png]]
367 +
349 349  DOWNLINK
350 350  
351 351  
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376 376  USB
377 377  
378 378  
398 +
379 379  [[image:image-20220527093747-22.png]]
380 380  
381 381  USB
382 382  
383 383  
404 +
384 384  (((
385 385  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.
386 386  )))
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408 408  )))
409 409  )))
410 410  
411 -[[image:image-20220527093849-24.png]]
432 +[[image:image-20220601142044-1.png]]
412 412  
413 413  
414 414  **Example**:These two meters are examples of setting parameters and device addresses.
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415 415  
416 416  [[image:image-20220527093950-25.png]]
417 417  
439 +
418 418  [[image:image-20220527094028-26.png]]
419 419  
420 420  (((
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435 435  )))
436 436  )))
437 437  
438 -[[image:image-20220527094100-27.png]]
460 +[[image:image-20220601142354-2.png]]
439 439  
440 440  (% class="box infomessage" %)
441 441  (((
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462 462  
463 463  Its default device address is 01, and the following are the parameters for configuring two energy meters.
464 464  
465 -[[image:image-20220527094150-28.png]]
487 +[[image:image-20220601142452-3.png]]
466 466  
467 467  
468 -[[image:image-20220527094224-29.png]]
490 +[[image:image-20220601142607-4.png]]
469 469  
470 470  **PAYLOAD:01 08 DF 43 62**
471 471  
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483 483  
484 484  * [[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
485 485  
486 -
487 487  == 1.5 Example 5: SEM Three Energy Meter with RS485-BL or RS485-LN ==
488 488  
489 489  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:
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