Last modified by Karry Zhuang on 2024/07/11 11:58
<
From version < 60.6 >
edited by Xiaoling
on 2022/09/19 16:07
To version < 33.1 >
edited by Xiaoling
on 2022/05/27 09:41
>
Change comment: Uploaded new attachment "image-20220527094100-27.png", version {1}

Summary

Details

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Content
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1 -**Table of Contents:**
1 +(% class="wikigeneratedid" %)
2 + **Contents:**
2 2  
3 3  {{toc/}}
4 4  
6 += 1. Introduction =
5 5  
6 -
7 -
8 -
9 -
10 -= **1. Introduction** =
11 -
12 -
13 13  This article provide the examples for RS485-LN to connect to different type of RS485 sensors.
14 14  
10 +== 1.1 Example 1: Connect to Leak relay and VFD ==
15 15  
16 -
17 -== **1.1 Example 1: Connect to Leak relay and VFD** ==
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 -
23 23  [[image:image-20220527091852-1.png]]
24 24  
25 25  Connection
... ... @@ -31,52 +31,40 @@
31 31  Connection
32 32  
33 33  
34 -(% style="color:blue" %)**Related documents:**
25 +Related documents:
35 35  
36 -* System Structure:  [[Solar Pump with Dragino>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Relay_VFD/||_mstmutation="1" style="background-color: rgb(255, 255, 255);"]]
37 -* Explanation on how to integrate to Node-red and to the Mobile Phone, and with link to the Github code:  [[Configure Manual>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Relay_VFD/||_mstmutation="1" style="background-color: rgb(255, 255, 255);"]]
27 +* [[Solar Pump with Dragino>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Relay_VFD/]] : System Structure
28 +* [[Configure Manual>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Relay_VFD/]] : Explanation on how to integrate to Node-red and to the Mobile Phone, and with link to the Github code.
38 38  * [[Video Demo>>url:https://www.youtube.com/watch?v=TAFZ5eaf-MY&t=6s&ab_channel=XavierFlorensaBerenguer]]
39 39  
31 +== 1.2 Example 2: Connect to Pulse Counter ==
40 40  
41 -
42 -== **1.2 Example 2: Connect to Pulse Counter** ==
43 -
44 -
45 45  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:
46 46  
47 -
48 48  [[image:image-20220527092058-3.png]]
49 49  
50 50  Connection
51 51  
52 52  
53 -
54 54  [[image:image-20220527092146-4.png]]
55 55  
56 56  Connection
57 57  
58 -
59 -(% style="color:blue" %)**Related documents:**
60 -
61 -* 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/||_mstmutation="1"]]
44 +* [[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
62 62  * [[Dragino Solution in Farm>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/&file=Dragino%20on%20Farms.pptx]]
63 63  
47 +== ==
64 64  
49 +== 1.3 Example3: Use RS485-LN with energy meters ==
65 65  
66 -== **1.3 Example3: Use RS485-LN with energy meters** ==
51 +=== 1.3.1 OverView ===
67 67  
68 -
69 -=== **1.3.1 OverView** ===
70 -
71 -
72 72  (((
73 -(% style="color:red" %)**Note**：**The specifications of each energy meter are different, please refer to your own energy meter specifications.**
54 +**Note**：The specifications of each energy meter are different, please refer to your own energy meter specifications.
74 74  )))
75 75  
76 76  (((
77 77  This example describes a single-phase meter.This is the connection between the RS485-LN and the energy meter.
78 -
79 -
80 80  )))
81 81  
82 82  [[image:image-20220527092419-5.png]]
... ... @@ -84,11 +84,8 @@
84 84  Connection1
85 85  
86 86  
87 -
88 88  (((
89 -(% style="color:blue" %)**How to connect with Energy Meter：**
90 -
91 -
67 +How to connect with Energy Meter：
92 92  )))
93 93  
94 94  (((
... ... @@ -109,8 +109,6 @@
109 109  
110 110  (((
111 111  Once there is power, the RS485-LN will be on.
112 -
113 -
114 114  )))
115 115  
116 116  [[image:image-20220527092514-6.png]]
... ... @@ -118,22 +118,22 @@
118 118  Connection2
119 119  
120 120  
121 -
122 122  [[image:image-20220527092555-7.png]]
123 123  
124 124  Connection3
125 125  
126 126  
100 +=== 1.3.2 How to use the parameters of the energy meter and MODBUS commands ===
127 127  
128 -=== **1.3.2 How to use the parameters of the energy meter and MODBUS commands** ===
129 -
130 -
131 131  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.
132 132  
133 -[[image:image-20220601143257-10.png]]
104 +[[image:image-20220527092629-8.png]]
134 134  
135 135  
136 -(% style="color:blue" %)**Example:**(%%)  AT+COMMAND1=01 03 00 00 00 01 84 0A
107 +(% class="box infomessage" %)
108 +(((
109 +**Example:** AT+COMMAND1=01 03 00 00 00 01 84 0A
110 +)))
137 137  
138 138  * The first byte : slave address code (=001～247)
139 139  * The second byte : read register value function code
... ... @@ -142,12 +142,12 @@
142 142  * 7th and 8th bytes: CRC16 checksum from bytes 1 to 6.
143 143  
144 144  (((
145 -
146 -
147 -
148 148  How to parse the reading of the return command of the parameter：
120 +)))
149 149  
150 -(% style="color:blue" %)**Example:**(%%) RETURN1：01 03 02 08 FD 7E 05
122 +(% class="box infomessage" %)
123 +(((
124 +**Example:** RETURN1：01 03 02 08 FD 7E 05
151 151  )))
152 152  
153 153  * The first byte ARD: slave address code (=001～254)
... ... @@ -160,30 +160,22 @@
160 160  (% class="wikigeneratedid" %)
161 161  (((
162 162  
163 -
164 -
165 -
166 166  )))
167 167  
168 -=== **1.3.3 How to configure RS485-LN and parse output commands** ===
139 +=== 1.3.3 How to configure RS485-LN and parse output commands ===
169 169  
170 -
171 171  RS485-LN provides two configuration methods: AT COMMAND and DOWNLINK.
172 172  
173 173  
144 +==== 1.3.3.1 via AT COMMAND: ====
174 174  
175 -==== **1.3.3.1 via AT COMMAND** ====
146 +First, we can use **AT+CFGDEV** to get the return value, and we can also judge whether the input parameters are correct.
176 176  
177 -
178 -First, we can use (% style="color:blue" %)**AT+CFGDEV**(%%) to get the return value, and we can also judge whether the input parameters are correct.
179 -
180 180  (((
181 181  If the configured parameters and commands are incorrect, the return value is not obtained.
182 -
183 -
184 184  )))
185 185  
186 -[[image:image-20220601143201-9.png]]
152 +[[image:image-20220527092748-9.png]]
187 187  
188 188  AT COMMAND
189 189  
... ... @@ -190,33 +190,31 @@
190 190  
191 191  (% class="box infomessage" %)
192 192  (((
193 - (% _mstmutation="1" %)**AT+DATACUTx **(%%):  This command defines how to handle the return from AT+COMMANDx, max reture length is 40 bytes. AT+DATACUTx=a,b,c
159 + AT+DATACUTx : This command defines how to handle the return from AT+COMMANDx, max reture length is 40 bytes. AT+DATACUTx=a,b,c
194 194  )))
195 195  
196 -a:  length for the return of AT+COMMAND
162 +a: length for the return of AT+COMMAND
197 197  
198 -b: 1: grab valid value by byte, max 6 bytes;  2: grab valid value by bytes section, max 3 sections.
164 +b:1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.
199 199  
200 -c:  define the position for valid value.
166 +c: define the position for valid value.
201 201  
202 -[[image:image-20220601143115-8.png]]
168 +[[image:image-20220527092936-10.png]]
203 203  
204 204  AT COMMAND
205 205  
206 206  
207 -
208 208  PAYLOAD is available after the valid value is intercepted.
209 209  
210 210  
211 -[[image:image-20220601143046-7.png]]
176 +[[image:image-20220527093059-11.png]]
212 212  
213 213  AT COMMAND
214 214  
215 215  
216 -
217 217  You can get configured PAYLOAD on TTN.
218 218  
219 -[[image:image-20220601143519-1.png]]
183 +[[image:image-20220527093133-12.png]]
220 220  
221 221  (((
222 222  AT COMMAND
... ... @@ -224,77 +224,62 @@
224 224  
225 225  (((
226 226  
227 -
228 -
229 229  )))
230 230  
231 231  (((
232 -(% style="color:blue" %)**Example**:
233 -
234 -
235 -(% style="color:red" %)**CMD1:**(%%) Read current data with MODBUS command. address: 0x03 AT+COMMAND1= 01 03 00 03 00 01,1
194 +**Example**: CMD1:Read current data with MODBUS command. address:0x03 AT+COMMAND1= 01 03 00 03 00 01,1
236 236  )))
237 237  
238 238  (((
239 -RETURN1: 01 03 02 00 02 39 85 00 00(return data)
198 +RETURN1:01 03 02 00 02 39 85 00 00(return data)
240 240  )))
241 241  
242 242  (((
243 -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.
244 -
245 -
202 +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.
246 246  )))
247 247  
248 248  (((
249 -(% style="color:red" %)**CMD2: **(%%)Read voltage data with MODBUS command. address: 0x00 AT+COMMAND2= 01 03 00 00 00 01,1
206 +CMD2:Read voltage data with MODBUS command. address:0x00 AT+COMMAND2= 01 03 00 00 00 01,1
250 250  )))
251 251  
252 252  (((
253 -RETURN2: 01 03 02 08 DC BE 1D(return data)
210 +RETURN2:01 03 02 08 DC BE 1D(return data)
254 254  )))
255 255  
256 256  (((
257 -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.
258 -
259 -
214 +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.
260 260  )))
261 261  
262 262  (((
263 -(% style="color:red" %)**CMD3:**(%%) Read total active energy data with MODBUS command. address: 0x0031 AT+COMMAND3= 01 03 00 31 00 02,1
218 +CMD3:Read total active energy data with MODBUS command. address:0x0031 AT+COMMAND3= 01 03 00 31 00 02,1
264 264  )))
265 265  
266 266  (((
267 -RETURN3: 01 03 04 00 00 00 44 FA 00(return data)
222 +RETURN3:01 03 04 00 00 00 44 FA 00(return data)
268 268  )))
269 269  
270 270  (((
271 -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.
226 +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.
272 272  )))
273 273  
274 274  (((
275 -Payload: 01 00 02 39 85 08 DC 00 00 00 44
276 -
277 -
230 +Payload:01 00 02 39 85 08 DC 00 00 00 44
278 278  )))
279 279  
280 -[[image:image-20220601142936-6.png]]
233 +[[image:image-20220527093204-13.png]]
281 281  
282 282  AT COMMAND
283 283  
284 284  
238 +(% 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.**
285 285  
286 -(% style="color:blue" %)**01 is device address,00 02 is the current, 08 DC is the voltage,00 00 00 44 is the total active energy.**
240 +[[image:image-20220527093251-14.png]]
287 287  
288 -
289 -[[image:image-20220601143642-2.png]]
290 -
291 291  AT COMMAND
292 292  
293 293  
245 +==== 1.3.3.2 via LoRaWAN DOWNLINK ====
294 294  
295 -==== **1.3.3.2 via LoRaWAN DOWNLINK** ====
296 -
297 -
298 298  [[image:image-20220527093358-15.png]]
299 299  
300 300  (((
... ... @@ -306,7 +306,7 @@
306 306  )))
307 307  
308 308  (((
309 -(% style="color:#4f81bd" %)**Type Code 0xAF**
258 +**Type Code 0xAF**
310 310  )))
311 311  
312 312  (((
... ... @@ -317,9 +317,7 @@
317 317  )))
318 318  
319 319  (((
320 -(% style="color:red" %)**Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.**
321 -
322 -
269 +Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
323 323  )))
324 324  
325 325  (((
... ... @@ -355,48 +355,40 @@
355 355  )))
356 356  
357 357  (((
358 -
359 -
360 -(% style="color:blue" %)**Example:**
305 +Example:
361 361  )))
362 362  
363 363  (((
364 -**AF 03 01 06 0A 05 00 04 00 01 00**: Same as AT+COMMAND3=0A 05 00 04 00 01,1
309 +AF 03 01 06 0A 05 00 04 00 01 00: Same as AT+COMMAND3=0A 05 00 04 00 01,1
365 365  )))
366 366  
367 -[[image:image-20220601144149-6.png]]
312 +[[image:image-20220527093430-16.png]]
368 368  
369 369  DOWNLINK
370 370  
371 371  
317 +[[image:image-20220527093508-17.png]]
372 372  
373 -[[image:image-20220601143803-3.png]]
374 -
375 375  DOWNLINK
376 376  
377 377  
322 +[[image:image-20220527093530-18.png]]
378 378  
379 -[[image:image-20220601144053-5.png]]
380 -
381 381  DOWNLINK
382 382  
383 383  
327 +[[image:image-20220527093607-19.png]]
384 384  
385 -[[image:image-20220601143921-4.png]]
386 -
387 387  DOWNLINK
388 388  
389 389  
332 +[[image:image-20220527093628-20.png]]
390 390  
391 -[[image:image-20220601142805-5.png]]
392 -
393 393  DOWNLINK
394 394  
395 395  
337 +=== 1.3.4 How to configure and output commands for RS485 to USB ===
396 396  
397 -=== **1.3.4 How to configure and output commands for RS485 to USB** ===
398 -
399 -
400 400  (((
401 401  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.
402 402  )))
... ... @@ -415,8 +415,6 @@
415 415  
416 416  (((
417 417  check digit: Even
418 -
419 -
420 420  )))
421 421  
422 422  [[image:image-20220527093708-21.png]]
... ... @@ -424,27 +424,21 @@
424 424  USB
425 425  
426 426  
427 -
428 428  [[image:image-20220527093747-22.png]]
429 429  
430 430  USB
431 431  
432 432  
433 -
434 434  (((
435 435  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.
436 -
437 -
438 438  )))
439 439  
440 440  (((
441 -(% style="color:blue" %)**Example:**  (%%)input：01 03 00 31 00 02 95 c4
374 +**Example:**  input：01 03 00 31 00 02 95 c4
442 442  )))
443 443  
444 444  (((
445 445   output：01 03 04 00 00 00 42 7A 02
446 -
447 -
448 448  )))
449 449  
450 450  [[image:image-20220527093821-23.png]]
... ... @@ -452,10 +452,8 @@
452 452  USB
453 453  
454 454  
386 +=== 1.3.5 How to configure multiple devices and modify device addresses ===
455 455  
456 -=== **1.3.5 How to configure multiple devices and modify device addresses** ===
457 -
458 -
459 459  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.
460 460  
461 461  (((
... ... @@ -464,17 +464,15 @@
464 464  )))
465 465  )))
466 466  
467 -[[image:image-20220601142044-1.png]]
396 +[[image:image-20220527093849-24.png]]
468 468  
469 469  
470 -(% style="color:blue" %)**Example**(%%): These two meters are examples of setting parameters and device addresses.
399 +**Example**:These two meters are examples of setting parameters and device addresses.
471 471  
472 472  [[image:image-20220527093950-25.png]]
473 473  
474 -
475 475  [[image:image-20220527094028-26.png]]
476 476  
477 -
478 478  (((
479 479  (((
480 480  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.
... ... @@ -483,7 +483,7 @@
483 483  
484 484  (((
485 485  (((
486 -We can use (% style="color:blue" %)**AT+CFGDEV**(%%) to set the device address.
413 +We can use AT+CFGDEV to set the device address.
487 487  )))
488 488  )))
489 489  
... ... @@ -493,14 +493,10 @@
493 493  )))
494 494  )))
495 495  
496 -[[image:image-20220601142354-2.png]]
423 +[[image:https://wiki.dragino.com/images/6/6b/Double_meter4.png||alt="Double meter4.png" height="141" width="456"]]
497 497  
425 +AT+CFGDEV:01 10 00 61 00 01 02 00 02,1
498 498  
499 -(% class="box infomessage" %)
500 -(((
501 -**AT+CFGDEV:01 10 00 61 00 01 02 00 02,1**
502 -)))
503 -
504 504  * 01:device adaress
505 505  
506 506  * 10:function code
... ... @@ -521,52 +521,43 @@
521 521  
522 522  Its default device address is 01, and the following are the parameters for configuring two energy meters.
523 523  
524 -[[image:image-20220601142452-3.png]]
447 +[[image:https://wiki.dragino.com/images/1/13/Meter11.png||alt="Meter11.png" height="576" width="379"]]
525 525  
449 +[[image:https://wiki.dragino.com/images/thumb/7/7e/Meter12.png/600px-Meter12.png||alt="Meter12.png" height="262" width="600"]]
526 526  
527 -[[image:image-20220601142607-4.png]]
451 +PAYLOAD:01 08 DF 43 62
528 528  
529 -
530 -(% style="color:blue" %)**PAYLOAD: 01 08 DF 43 62**
531 -
532 532  * 08 DF is the valid value of the meter with device address 02.
533 533  * 43 62 is the valid value of the meter with device address 01.
534 534  
535 535  == 1.4 Example 4: Circuit Breaker Remote Open Close ==
536 536  
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:
537 537  
538 -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.
460 +[[image:https://wiki.dragino.com/images/thumb/f/fa/RS485_04_2.png/600px-RS485_04_2.png||height="336" width="600"]]
539 539  
540 -The structure is like below:
541 -
542 -[[image:image-20220527094330-30.png]]
543 -
544 544  Connection
545 545  
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
546 546  
547 -* Configure Documen:  [[Circuit Breaker Remote Open Close>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Circuit_Breaker_Remote_Open_Close/||_mstmutation="1"]]
548 -
549 549  == 1.5 Example 5: SEM Three Energy Meter with RS485-BL or RS485-LN ==
550 550  
551 -
552 552  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:
553 553  
554 -* Configure Document For RS485-BL:  [[Connect to SEM Three>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/RS485-BL/Application_Note/&file=Dragino%20RS485BL%20and%20pickdata%20SEM%20Three%20v1.pdf||_mstmutation="1" style="background-color: rgb(255, 255, 255);"]]
555 -* Configure Document for RS485-LN:  [[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||_mstmutation="1"]]
470 +* [[Connect to SEM Three>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/RS485-BL/Application_Note/&file=Dragino%20RS485BL%20and%20pickdata%20SEM%20Three%20v1.pdf]] : Configure Document For RS485-BL
556 556  
557 -== 1.6 Example 6: CEM C31 485-T1-MID Energy Meter with RS485-LN ==
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
558 558  
474 +== 1.6 Example 6:CEM C31 485-T1-MID Energy Meter with RS485-LN ==
559 559  
560 560  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:
561 561  
562 -* Configure Document For RS485-LN:  [[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||_mstmutation="1" style="background-color: rgb(255, 255, 255);"]]
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
563 563  
564 -== 1.7 Example 7: Schneider Electric PLC M221 with RS485-BL ==
480 +== 1.7 Example 7:Schneider Electric PLC M221 with RS485-BL ==
565 565  
482 +[[image:https://wiki.dragino.com/images/thumb/9/97/PLC_M221.png/600px-PLC_M221.png||height="353" width="600"]]
566 566  
567 -[[image:image-20220527094556-31.png]]
568 -
569 569  Network Structure
570 570  
571 -
572 572  * [[Reference Instruction>>url:https://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Schneider%20Electric%20PLC/]]
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