Last modified by Karry Zhuang on 2024/07/11 11:58
<
From version < 41.19 >
edited by Xiaoling
on 2022/06/01 14:16
To version < 60.12 >
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Summary

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Page properties
Content
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1 -(% class="wikigeneratedid" %)
2 - **Contents:**
1 +**Table of Contents:**
3 3  
4 4  {{toc/}}
5 5  
... ... @@ -8,74 +8,86 @@
8 8  
9 9  
10 10  
11 -= **1. Introduction** =
10 += 1. Introduction =
12 12  
12 +
13 13  This article provide the examples for RS485-LN to connect to different type of RS485 sensors.
14 14  
15 15  
16 -== **1.1 Example 1: Connect to Leak relay and VFD** ==
16 +== 1.1 Example 1: Connect to Leak relay and VFD ==
17 17  
18 +
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 -[[image:image-20220527091852-1.png]]
21 21  
22 -Connection
22 +[[image:image-20220527091852-1.png||height="547" width="994"]]
23 23  
24 +**Connection**
24 24  
25 25  
27 +
26 26  [[image:image-20220527091942-2.png]](% style="display:none" %)
27 27  
28 -Connection
30 +**Connection**
29 29  
30 30  
31 -Related documents:
33 +(% style="color:blue" %)**Related documents:**
32 32  
33 -* [[Solar Pump with Dragino>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Relay_VFD/]] : System Structure
34 -* [[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.
35 +* 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);"]]
36 +* 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);"]]
35 35  * [[Video Demo>>url:https://www.youtube.com/watch?v=TAFZ5eaf-MY&t=6s&ab_channel=XavierFlorensaBerenguer]]
36 36  
37 37  
38 38  
39 -== **1.2 Example 2: Connect to Pulse Counter** ==
41 +== 1.2 Example 2: Connect to Pulse Counter ==
40 40  
43 +
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  
43 -[[image:image-20220527092058-3.png]]
44 44  
45 -Connection
47 +[[image:image-20220527092058-3.png||height="552" width="905"]]
46 46  
49 +**Connection**
47 47  
48 48  
49 -[[image:image-20220527092146-4.png]]
50 50  
51 -Connection
53 +[[image:image-20220527092146-4.png||height="507" width="906"]]
52 52  
55 +**Connection**
53 53  
54 -* [[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
57 +
58 +(% style="color:blue" %)**Related documents:**
59 +
60 +* 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"]]
55 55  * [[Dragino Solution in Farm>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/&file=Dragino%20on%20Farms.pptx]]
56 56  
57 -== ==
58 58  
59 -== **1.3 Example3: Use RS485-LN with energy meters** ==
60 60  
61 -=== **1.3.1 OverView** ===
65 +== 1.3 Example 3: Use RS485-LN with energy meters ==
62 62  
67 +=== 1.3.1 OverView ===
68 +
69 +
63 63  (((
64 -**Note**：The specifications of each energy meter are different, please refer to your own energy meter specifications.
71 +(% style="color:red" %)**Note**：**The specifications of each energy meter are different, please refer to your own energy meter specifications.**
65 65  )))
66 66  
67 67  (((
68 68  This example describes a single-phase meter.This is the connection between the RS485-LN and the energy meter.
76 +
77 +
69 69  )))
70 70  
71 71  [[image:image-20220527092419-5.png]]
72 72  
73 -Connection1
82 +**Connection1**
74 74  
75 75  
76 76  
77 77  (((
78 -How to connect with Energy Meter：
87 +(% style="color:blue" %)**How to connect with Energy Meter：**
88 +
89 +
79 79  )))
80 80  
81 81  (((
... ... @@ -96,30 +96,30 @@
96 96  
97 97  (((
98 98  Once there is power, the RS485-LN will be on.
110 +
111 +
99 99  )))
100 100  
101 101  [[image:image-20220527092514-6.png]]
102 102  
103 -Connection2
116 +**Connection2**
104 104  
105 105  
106 106  
107 107  [[image:image-20220527092555-7.png]]
108 108  
109 -Connection3
122 +**Connection3**
110 110  
111 111  
112 -=== **1.3.2 How to use the parameters of the energy meter and MODBUS commands** ===
125 +=== 1.3.2 How to use the parameters of the energy meter and MODBUS commands ===
113 113  
127 +
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]]
130 +[[image:image-20220601143257-10.png]]
117 117  
118 118  
119 -(% class="box infomessage" %)
120 -(((
121 -**Example:** AT+COMMAND1=01 03 00 00 00 01 84 0A
122 -)))
133 +(% style="color:blue" %)**Example:**(%%)  AT+COMMAND1=01 03 00 00 00 01 84 0A
123 123  
124 124  * The first byte : slave address code (=001～247)
125 125  * The second byte : read register value function code
... ... @@ -128,12 +128,12 @@
128 128  * 7th and 8th bytes: CRC16 checksum from bytes 1 to 6.
129 129  
130 130  (((
142 +
143 +
144 +
131 131  How to parse the reading of the return command of the parameter：
132 -)))
133 133  
134 -(% class="box infomessage" %)
135 -(((
136 -**Example:** RETURN1：01 03 02 08 FD 7E 05
147 +(% style="color:blue" %)**Example:**(%%) RETURN1：01 03 02 08 FD 7E 05
137 137  )))
138 138  
139 139  * The first byte ARD: slave address code (=001～254)
... ... @@ -146,29 +146,35 @@
146 146  (% class="wikigeneratedid" %)
147 147  (((
148 148  
160 +
161 +
149 149  )))
150 150  
151 -=== **1.3.3 How to configure RS485-LN and parse output commands** ===
164 +=== 1.3.3 How to configure RS485-LN and parse output commands ===
152 152  
166 +
153 153  RS485-LN provides two configuration methods: AT COMMAND and DOWNLINK.
154 154  
155 155  
156 -==== **1.3.3.1 via AT COMMAND:** ====
170 +==== 1.3.3.1 via AT COMMAND ====
157 157  
158 -First, we can use **AT+CFGDEV** to get the return value, and we can also judge whether the input parameters are correct.
159 159  
173 +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.
174 +
160 160  (((
161 161  If the configured parameters and commands are incorrect, the return value is not obtained.
177 +
178 +
162 162  )))
163 163  
164 -[[image:image-20220527092748-9.png]]
181 +[[image:image-20220601143201-9.png]]
165 165  
166 -AT COMMAND
183 +**AT COMMAND**
167 167  
168 168  
169 169  (% class="box infomessage" %)
170 170  (((
171 - AT+DATACUTx : This command defines how to handle the return from AT+COMMANDx, max reture length is 40 bytes. AT+DATACUTx=a,b,c
188 + (% _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
172 172  )))
173 173  
174 174  a:  length for the return of AT+COMMAND
... ... @@ -177,27 +177,26 @@
177 177  
178 178  c:  define the position for valid value.
179 179  
180 -[[image:image-20220527092936-10.png]]
197 +[[image:image-20220601143115-8.png]]
181 181  
182 -AT COMMAND
199 +**AT COMMAND**
183 183  
184 184  
185 185  
186 186  PAYLOAD is available after the valid value is intercepted.
187 187  
205 +[[image:image-20220601143046-7.png]]
188 188  
189 -[[image:image-20220527093059-11.png]]
207 +**AT COMMAND**
190 190  
191 -AT COMMAND
192 192  
193 193  
194 -
195 195  You can get configured PAYLOAD on TTN.
196 196  
197 -[[image:image-20220527093133-12.png]]
213 +[[image:image-20220601143519-1.png]]
198 198  
199 199  (((
200 -AT COMMAND
216 +**AT COMMAND**
201 201  )))
202 202  
203 203  (((
... ... @@ -205,71 +205,76 @@
205 205  )))
206 206  
207 207  (((
208 -(% style="color:#4f81bd" %)**Example**:
224 +(% style="color:blue" %)**Example**:
209 209  
210 -CMD1:Read current data with MODBUS command. address:0x03 AT+COMMAND1= 01 03 00 03 00 01,1
226 +
227 +(% style="color:red" %)**CMD1:**(%%) Read current data with MODBUS command. address: 0x03 AT+COMMAND1= 01 03 00 03 00 01,1
211 211  )))
212 212  
213 213  (((
214 -RETURN1:01 03 02 00 02 39 85 00 00(return data)
231 +RETURN1: 01 03 02 00 02 39 85 00 00(return data)
215 215  )))
216 216  
217 217  (((
218 -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.
235 +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.
219 219  
220 220  
221 221  )))
222 222  
223 223  (((
224 -CMD2:Read voltage data with MODBUS command. address:0x00 AT+COMMAND2= 01 03 00 00 00 01,1
241 +(% style="color:red" %)**CMD2: **(%%)Read voltage data with MODBUS command. address: 0x00 AT+COMMAND2= 01 03 00 00 00 01,1
225 225  )))
226 226  
227 227  (((
228 -RETURN2:01 03 02 08 DC BE 1D(return data)
245 +RETURN2: 01 03 02 08 DC BE 1D(return data)
229 229  )))
230 230  
231 231  (((
232 -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.
249 +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.
233 233  
234 234  
235 235  )))
236 236  
237 237  (((
238 -CMD3:Read total active energy data with MODBUS command. address:0x0031 AT+COMMAND3= 01 03 00 31 00 02,1
255 +(% style="color:red" %)**CMD3:**(%%) Read total active energy data with MODBUS command. address: 0x0031 AT+COMMAND3= 01 03 00 31 00 02,1
239 239  )))
240 240  
241 241  (((
242 -RETURN3:01 03 04 00 00 00 44 FA 00(return data)
259 +RETURN3: 01 03 04 00 00 00 44 FA 00(return data)
243 243  )))
244 244  
245 245  (((
246 -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.
263 +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.
247 247  )))
248 248  
249 249  (((
250 -Payload:01 00 02 39 85 08 DC 00 00 00 44
267 +Payload: 01 00 02 39 85 08 DC 00 00 00 44
268 +
269 +
251 251  )))
252 252  
253 -[[image:image-20220527093204-13.png]]
272 +[[image:image-20220601142936-6.png]]
254 254  
255 255  AT COMMAND
256 256  
257 257  
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  
278 +(% 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.**
260 260  
261 261  
262 -[[image:image-20220527093251-14.png]]
281 +[[image:image-20220601143642-2.png]]
263 263  
264 264  AT COMMAND
265 265  
266 266  
267 -==== **1.3.3.2 via LoRaWAN DOWNLINK** ====
268 268  
287 +==== 1.3.3.2 via LoRaWAN DOWNLINK ====
288 +
289 +
269 269  [[image:image-20220527093358-15.png]]
270 270  
271 271  (((
272 -DOWNLINK
293 +**DOWNLINK**
273 273  )))
274 274  
275 275  (((
... ... @@ -277,7 +277,7 @@
277 277  )))
278 278  
279 279  (((
280 -(% style="color:#4f81bd" %)**Type Code 0xAF**
301 +(% style="color:blue" %)**Type Code 0xAF**
281 281  )))
282 282  
283 283  (((
... ... @@ -288,7 +288,9 @@
288 288  )))
289 289  
290 290  (((
291 -Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
312 +(% style="color:red" %)**Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.**
313 +
314 +
292 292  )))
293 293  
294 294  (((
... ... @@ -326,7 +326,7 @@
326 326  (((
327 327  
328 328  
329 -(% style="color:#4f81bd" %)**Example:**
352 +(% style="color:blue" %)**Example:**
330 330  )))
331 331  
332 332  (((
... ... @@ -333,34 +333,38 @@
333 333  **AF 03 01 06 0A 05 00 04 00 01 00**: Same as AT+COMMAND3=0A 05 00 04 00 01,1
334 334  )))
335 335  
336 -[[image:image-20220527093430-16.png]]
359 +[[image:image-20220601144149-6.png]]
337 337  
338 -DOWNLINK
361 +**DOWNLINK**
339 339  
340 340  
341 341  
342 -[[image:image-20220527093508-17.png]]
365 +[[image:image-20220601143803-3.png]]
343 343  
344 -DOWNLINK
367 +**DOWNLINK**
345 345  
346 346  
347 -[[image:image-20220527093530-18.png]]
348 348  
349 -DOWNLINK
371 +[[image:image-20220601144053-5.png]]
350 350  
373 +**DOWNLINK**
351 351  
352 -[[image:image-20220527093607-19.png]]
353 353  
354 -DOWNLINK
355 355  
377 +[[image:image-20220601143921-4.png]]
356 356  
357 -[[image:image-20220527093628-20.png]]
379 +**DOWNLINK**
358 358  
359 -DOWNLINK
360 -
361 361  
362 -=== **1.3.4 How to configure and output commands for RS485 to USB** ===
363 363  
383 +[[image:image-20220601142805-5.png]]
384 +
385 +**DOWNLINK**
386 +
387 +
388 +=== 1.3.4 How to configure and output commands for RS485 to USB ===
389 +
390 +
364 364  (((
365 365  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.
366 366  )))
... ... @@ -379,37 +379,47 @@
379 379  
380 380  (((
381 381  check digit: Even
409 +
410 +
382 382  )))
383 383  
384 384  [[image:image-20220527093708-21.png]]
385 385  
386 -USB
415 +**USB**
387 387  
388 388  
418 +
389 389  [[image:image-20220527093747-22.png]]
390 390  
391 -USB
421 +**USB**
392 392  
393 393  
424 +
394 394  (((
395 395  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.
427 +
428 +
396 396  )))
397 397  
398 398  (((
399 -(% style="color:#4f81bd" %)**Example:**  (%%)input：01 03 00 31 00 02 95 c4
432 +(% style="color:blue" %)**Example:**  (%%)input：01 03 00 31 00 02 95 c4
400 400  )))
401 401  
402 402  (((
403 403   output：01 03 04 00 00 00 42 7A 02
437 +
438 +
404 404  )))
405 405  
406 406  [[image:image-20220527093821-23.png]]
407 407  
408 -USB
443 +**USB**
409 409  
410 410  
411 -=== **1.3.5 How to configure multiple devices and modify device addresses** ===
412 412  
447 +=== 1.3.5 How to configure multiple devices and modify device addresses ===
448 +
449 +
413 413  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.
414 414  
415 415  (((
... ... @@ -418,15 +418,18 @@
418 418  )))
419 419  )))
420 420  
421 -[[image:image-20220527093849-24.png]]
458 +[[image:image-20220601142044-1.png]]
422 422  
423 423  
424 -**Example**:These two meters are examples of setting parameters and device addresses.
461 +(% style="color:blue" %)**Example**(%%): These two meters are examples of setting parameters and device addresses.
425 425  
463 +
426 426  [[image:image-20220527093950-25.png]]
427 427  
466 +
428 428  [[image:image-20220527094028-26.png]]
429 429  
469 +
430 430  (((
431 431  (((
432 432  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.
... ... @@ -435,7 +435,7 @@
435 435  
436 436  (((
437 437  (((
438 -We can use AT+CFGDEV to set the device address.
478 +We can use (% style="color:blue" %)**AT+CFGDEV**(%%) to set the device address.
439 439  )))
440 440  )))
441 441  
... ... @@ -445,16 +445,17 @@
445 445  )))
446 446  )))
447 447  
448 -[[image:image-20220527094100-27.png]]
488 +[[image:image-20220601142354-2.png]]
449 449  
490 +
450 450  (% class="box infomessage" %)
451 451  (((
452 452  **AT+CFGDEV:01 10 00 61 00 01 02 00 02,1**
453 453  )))
454 454  
455 -* 01:device adaress
496 +* 01: device adaress
456 456  
457 -* 10:function code
498 +* 10: function code
458 458  
459 459  * 00 61：Register address
460 460  
... ... @@ -472,46 +472,62 @@
472 472  
473 473  Its default device address is 01, and the following are the parameters for configuring two energy meters.
474 474  
475 -[[image:image-20220527094150-28.png]]
516 +[[image:image-20220601142452-3.png]]
476 476  
477 477  
478 -[[image:image-20220527094224-29.png]]
519 +[[image:image-20220601142607-4.png]]
479 479  
480 -**PAYLOAD:01 08 DF 43 62**
481 481  
522 +(% style="color:blue" %)**PAYLOAD: 01 08 DF 43 62**
523 +
482 482  * 08 DF is the valid value of the meter with device address 02.
483 483  * 43 62 is the valid value of the meter with device address 01.
484 484  
527 +(% style="display:none" %) (%%)
485 485  
529 +(% style="display:none" %) (%%)
530 +
486 486  == 1.4 Example 4: Circuit Breaker Remote Open Close ==
487 487  
488 -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:
489 489  
534 +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.
535 +
536 +The structure is like below:
537 +
490 490  [[image:image-20220527094330-30.png]]
491 491  
492 492  Connection
493 493  
494 -* [[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
495 495  
543 +* 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"]]
496 496  
545 +
546 +
497 497  == 1.5 Example 5: SEM Three Energy Meter with RS485-BL or RS485-LN ==
498 498  
549 +
499 499  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:
500 500  
501 -* [[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
552 +* 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);"]]
553 +* 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"]]
502 502  
503 -* [[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
504 504  
505 -== 1.6 Example 6:CEM C31 485-T1-MID Energy Meter with RS485-LN ==
506 506  
557 +== 1.6 Example 6: CEM C31 485-T1-MID Energy Meter with RS485-LN ==
558 +
559 +
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-LN to connect to CEM C31 485-T1-MID and send the data for remote minitor. The structure is like below:
508 508  
509 -* [[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
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);"]]
510 510  
511 -== 1.7 Example 7:Schneider Electric PLC M221 with RS485-BL ==
512 512  
565 +
566 +== 1.7 Example 7: Schneider Electric PLC M221 with RS485-BL ==
567 +
568 +
513 513  [[image:image-20220527094556-31.png]]
514 514  
515 515  Network Structure
516 516  
573 +
517 517  * [[Reference Instruction>>url:https://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Schneider%20Electric%20PLC/]]
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