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113 113  
114 114  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.
115 115  
116 -[[image:image-20220527092629-8.png]]
116 +[[image:image-20220601143257-10.png]]
117 117  
118 118  
119 119  (% class="box infomessage" %)
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161 161  If the configured parameters and commands are incorrect, the return value is not obtained.
162 162  )))
163 163  
164 -[[image:image-20220527092748-9.png]]
164 +[[image:image-20220601143201-9.png]]
165 165  
166 166  AT COMMAND
167 167  
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177 177  
178 178  c:  define the position for valid value.
179 179  
180 -[[image:image-20220527092936-10.png]]
180 +[[image:image-20220601143115-8.png]]
181 181  
182 182  AT COMMAND
183 183  
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186 186  PAYLOAD is available after the valid value is intercepted.
187 187  
188 188  
189 -[[image:image-20220527093059-11.png]]
189 +[[image:image-20220601143046-7.png]]
190 190  
191 191  AT COMMAND
192 192  
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250 250  Payload:01 00 02 39 85 08 DC 00 00 00 44
251 251  )))
252 252  
253 -[[image:image-20220527093204-13.png]]
253 +[[image:image-20220601142936-6.png]]
254 254  
255 255  AT COMMAND
256 256  
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257 257  
258 258  (% 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.**
259 259  
260 +
261 +
260 260  [[image:image-20220527093251-14.png]]
261 261  
262 262  AT COMMAND
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322 322  )))
323 323  
324 324  (((
327 +
328 +
325 325  (% style="color:#4f81bd" %)**Example:**
326 326  )))
327 327  
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334 334  DOWNLINK
335 335  
336 336  
341 +
337 337  [[image:image-20220527093508-17.png]]
338 338  
339 339  DOWNLINK
340 340  
341 341  
347 +
342 342  [[image:image-20220527093530-18.png]]
343 343  
344 344  DOWNLINK
345 345  
346 346  
353 +
347 347  [[image:image-20220527093607-19.png]]
348 348  
349 349  DOWNLINK
350 350  
351 351  
352 -[[image:image-20220527093628-20.png]]
353 353  
360 +[[image:image-20220601142805-5.png]]
361 +
354 354  DOWNLINK
355 355  
356 356  
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381 381  USB
382 382  
383 383  
392 +
384 384  [[image:image-20220527093747-22.png]]
385 385  
386 386  USB
387 387  
388 388  
398 +
389 389  (((
390 390  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.
391 391  )))
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413 413  )))
414 414  )))
415 415  
416 -[[image:image-20220527093849-24.png]]
426 +[[image:image-20220601142044-1.png]]
417 417  
418 418  
419 419  **Example**:These two meters are examples of setting parameters and device addresses.
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440 440  )))
441 441  )))
442 442  
443 -[[image:image-20220527094100-27.png]]
453 +[[image:image-20220601142354-2.png]]
444 444  
445 445  (% class="box infomessage" %)
446 446  (((
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467 467  
468 468  Its default device address is 01, and the following are the parameters for configuring two energy meters.
469 469  
470 -[[image:image-20220527094150-28.png]]
480 +[[image:image-20220601142452-3.png]]
471 471  
472 472  
473 -[[image:image-20220527094224-29.png]]
483 +[[image:image-20220601142607-4.png]]
474 474  
475 475  **PAYLOAD:01 08 DF 43 62**
476 476  
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497 497  
498 498  * [[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
499 499  
510 +
511 +
500 500  == 1.6 Example 6:CEM C31 485-T1-MID Energy Meter with RS485-LN ==
501 501  
502 502  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:
... ... @@ -503,6 +503,8 @@
503 503  
504 504  * [[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
505 505  
518 +
519 +
506 506  == 1.7 Example 7:Schneider Electric PLC M221 with RS485-BL ==
507 507  
508 508  [[image:image-20220527094556-31.png]]
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