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1 1  (% class="wikigeneratedid" %)
2 - ** Table of** **Contents:**
2 + **Contents:**
3 3  
4 4  {{toc/}}
5 5  
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10 10  
11 11  = **1. Introduction** =
12 12  
13 -
14 14  This article provide the examples for RS485-LN to connect to different type of RS485 sensors.
15 15  
16 16  
17 17  == **1.1 Example 1: Connect to Leak relay and VFD** ==
18 18  
19 -
20 20  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:
21 21  
22 22  [[image:image-20220527091852-1.png]]
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38 38  
39 39  
40 40  
41 -
42 42  == **1.2 Example 2: Connect to Pulse Counter** ==
43 43  
44 44  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:
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53 53  
54 54  Connection
55 55  
56 -
57 57  * [[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 58  * [[Dragino Solution in Farm>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/&file=Dragino%20on%20Farms.pptx]]
59 59  
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76 76  Connection1
77 77  
78 78  
79 -
80 80  (((
81 81  How to connect with Energy Meter：
82 82  )))
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106 106  Connection2
107 107  
108 108  
109 -
110 110  [[image:image-20220527092555-7.png]]
111 111  
112 112  Connection3
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116 116  
117 117  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.
118 118  
119 -[[image:image-20220601143257-10.png]]
113 +[[image:image-20220527092629-8.png]]
120 120  
121 121  
122 122  (% class="box infomessage" %)
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164 164  If the configured parameters and commands are incorrect, the return value is not obtained.
165 165  )))
166 166  
167 -[[image:image-20220601143201-9.png]]
161 +[[image:image-20220527092748-9.png]]
168 168  
169 169  AT COMMAND
170 170  
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174 174   AT+DATACUTx : This command defines how to handle the return from AT+COMMANDx, max reture length is 40 bytes. AT+DATACUTx=a,b,c
175 175  )))
176 176  
177 -a:  length for the return of AT+COMMAND
171 +a: length for the return of AT+COMMAND
178 178  
179 -b: 1: grab valid value by byte, max 6 bytes;  2: grab valid value by bytes section, max 3 sections.
173 +b:1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.
180 180  
181 -c:  define the position for valid value.
175 +c: define the position for valid value.
182 182  
183 -[[image:image-20220601143115-8.png]]
177 +[[image:image-20220527092936-10.png]]
184 184  
185 185  AT COMMAND
186 186  
187 187  
188 -
189 189  PAYLOAD is available after the valid value is intercepted.
190 190  
191 191  
192 -[[image:image-20220601143046-7.png]]
185 +[[image:image-20220527093059-11.png]]
193 193  
194 194  AT COMMAND
195 195  
196 196  
197 -
198 198  You can get configured PAYLOAD on TTN.
199 199  
200 -[[image:image-20220601143519-1.png]]
192 +[[image:image-20220527093133-12.png]]
201 201  
202 202  (((
203 203  AT COMMAND
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253 253  Payload:01 00 02 39 85 08 DC 00 00 00 44
254 254  )))
255 255  
256 -[[image:image-20220601142936-6.png]]
248 +[[image:image-20220527093204-13.png]]
257 257  
258 258  AT COMMAND
259 259  
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260 260  
261 261  (% 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.**
262 262  
255 +[[image:image-20220527093251-14.png]]
263 263  
264 -
265 -[[image:image-20220601143642-2.png]]
266 -
267 267  AT COMMAND
268 268  
269 269  
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327 327  )))
328 328  
329 329  (((
330 -
331 -
332 332  (% style="color:#4f81bd" %)**Example:**
333 333  )))
334 334  
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336 336  **AF 03 01 06 0A 05 00 04 00 01 00**: Same as AT+COMMAND3=0A 05 00 04 00 01,1
337 337  )))
338 338  
339 -[[image:image-20220601144149-6.png]]
327 +[[image:image-20220527093430-16.png]]
340 340  
341 341  DOWNLINK
342 342  
343 343  
332 +[[image:image-20220527093508-17.png]]
344 344  
345 -[[image:image-20220601143803-3.png]]
346 -
347 347  DOWNLINK
348 348  
349 349  
337 +[[image:image-20220527093530-18.png]]
350 350  
351 -[[image:image-20220601144053-5.png]]
352 -
353 353  DOWNLINK
354 354  
355 355  
342 +[[image:image-20220527093607-19.png]]
356 356  
357 -[[image:image-20220601143921-4.png]]
358 -
359 359  DOWNLINK
360 360  
361 361  
347 +[[image:image-20220527093628-20.png]]
362 362  
363 -[[image:image-20220601142805-5.png]]
364 -
365 365  DOWNLINK
366 366  
367 367  
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392 392  USB
393 393  
394 394  
395 -
396 396  [[image:image-20220527093747-22.png]]
397 397  
398 398  USB
399 399  
400 400  
401 -
402 402  (((
403 403  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.
404 404  )))
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426 426  )))
427 427  )))
428 428  
429 -[[image:image-20220601142044-1.png]]
411 +[[image:image-20220527093849-24.png]]
430 430  
431 431  
432 432  **Example**:These two meters are examples of setting parameters and device addresses.
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433 433  
434 434  [[image:image-20220527093950-25.png]]
435 435  
436 -
437 437  [[image:image-20220527094028-26.png]]
438 438  
439 439  (((
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454 454  )))
455 455  )))
456 456  
457 -[[image:image-20220601142354-2.png]]
438 +[[image:image-20220527094100-27.png]]
458 458  
459 459  (% class="box infomessage" %)
460 460  (((
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481 481  
482 482  Its default device address is 01, and the following are the parameters for configuring two energy meters.
483 483  
484 -[[image:image-20220601142452-3.png]]
465 +[[image:image-20220527094150-28.png]]
485 485  
486 486  
487 -[[image:image-20220601142607-4.png]]
468 +[[image:image-20220527094224-29.png]]
488 488  
489 489  **PAYLOAD:01 08 DF 43 62**
490 490  
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502 502  
503 503  * [[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
504 504  
486 +
505 505  == 1.5 Example 5: SEM Three Energy Meter with RS485-BL or RS485-LN ==
506 506  
507 507  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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