Last modified by Karry Zhuang on 2024/07/11 11:58
<
From version < 57.25 >
edited by Xiaoling
on 2022/07/14 10:16
To version < 25.1 >
edited by Xiaoling
on 2022/05/27 09:36
>
Change comment: Uploaded new attachment "image-20220527093607-19.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 -== **1.1 Example 1: Connect to Leak relay and VFD** ==
17 -
18 -
19 19  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:
20 20  
21 21  [[image:image-20220527091852-1.png]]
... ... @@ -29,46 +29,36 @@
29 29  Connection
30 30  
31 31  
32 -(% style="color:blue" %)**Related documents:**
25 +Related documents:
33 33  
34 -* System Structure:  [[Solar Pump with Dragino>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Relay_VFD/||style="background-color: rgb(255, 255, 255);"]]
35 -* 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/||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.
36 36  * [[Video Demo>>url:https://www.youtube.com/watch?v=TAFZ5eaf-MY&t=6s&ab_channel=XavierFlorensaBerenguer]]
37 37  
31 +== 1.2 Example 2: Connect to Pulse Counter ==
38 38  
39 -
40 -== **1.2 Example 2: Connect to Pulse Counter** ==
41 -
42 -
43 43  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:
44 44  
45 -
46 46  [[image:image-20220527092058-3.png]]
47 47  
48 48  Connection
49 49  
50 50  
51 -
52 52  [[image:image-20220527092146-4.png]]
53 53  
54 54  Connection
55 55  
56 -
57 -(% style="color:blue" %)**Related documents:**
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/]]
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
60 60  * [[Dragino Solution in Farm>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/&file=Dragino%20on%20Farms.pptx]]
61 61  
47 +== ==
62 62  
49 +== 1.3 Example3: Use RS485-LN with energy meters ==
63 63  
64 -== **1.3 Example3: Use RS485-LN with energy meters** ==
51 +=== 1.3.1 OverView ===
65 65  
66 -
67 -=== **1.3.1 OverView** ===
68 -
69 -
70 70  (((
71 -(% 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.
72 72  )))
73 73  
74 74  (((
... ... @@ -80,11 +80,8 @@
80 80  Connection1
81 81  
82 82  
83 -
84 84  (((
85 -(% style="color:blue" %)**How to connect with Energy Meter：**
86 -
87 -
67 +How to connect with Energy Meter：
88 88  )))
89 89  
90 90  (((
... ... @@ -117,16 +117,17 @@
117 117  Connection3
118 118  
119 119  
100 +=== 1.3.2 How to use the parameters of the energy meter and MODBUS commands ===
120 120  
121 -=== **1.3.2 How to use the parameters of the energy meter and MODBUS commands** ===
122 -
123 -
124 124  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.
125 125  
126 -[[image:image-20220601143257-10.png]]
104 +[[image:image-20220527092629-8.png]]
127 127  
128 128  
129 -(% 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 +)))
130 130  
131 131  * The first byte : slave address code (=001～247)
132 132  * The second byte : read register value function code
... ... @@ -135,12 +135,12 @@
135 135  * 7th and 8th bytes: CRC16 checksum from bytes 1 to 6.
136 136  
137 137  (((
138 -
139 -
140 -
141 141  How to parse the reading of the return command of the parameter：
120 +)))
142 142  
143 -(% 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
144 144  )))
145 145  
146 146  * The first byte ARD: slave address code (=001～254)
... ... @@ -153,28 +153,22 @@
153 153  (% class="wikigeneratedid" %)
154 154  (((
155 155  
156 -
157 -
158 -
159 159  )))
160 160  
161 -=== **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 ===
162 162  
163 -
164 164  RS485-LN provides two configuration methods: AT COMMAND and DOWNLINK.
165 165  
166 166  
144 +==== 1.3.3.1 via AT COMMAND: ====
167 167  
168 -==== **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.
169 169  
170 -
171 -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.
172 -
173 173  (((
174 174  If the configured parameters and commands are incorrect, the return value is not obtained.
175 175  )))
176 176  
177 -[[image:image-20220601143201-9.png]]
152 +[[image:image-20220527092748-9.png]]
178 178  
179 179  AT COMMAND
180 180  
... ... @@ -181,33 +181,31 @@
181 181  
182 182  (% class="box infomessage" %)
183 183  (((
184 - **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
185 185  )))
186 186  
187 -a:  length for the return of AT+COMMAND
162 +a: length for the return of AT+COMMAND
188 188  
189 -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.
190 190  
191 -c:  define the position for valid value.
166 +c: define the position for valid value.
192 192  
193 -[[image:image-20220601143115-8.png]]
168 +[[image:image-20220527092936-10.png]]
194 194  
195 195  AT COMMAND
196 196  
197 197  
198 -
199 199  PAYLOAD is available after the valid value is intercepted.
200 200  
201 201  
202 -[[image:image-20220601143046-7.png]]
176 +[[image:image-20220527093059-11.png]]
203 203  
204 204  AT COMMAND
205 205  
206 206  
207 -
208 208  You can get configured PAYLOAD on TTN.
209 209  
210 -[[image:image-20220601143519-1.png]]
183 +[[image:image-20220527093133-12.png]]
211 211  
212 212  (((
213 213  AT COMMAND
... ... @@ -218,52 +218,46 @@
218 218  )))
219 219  
220 220  (((
221 -(% style="color:blue" %)**Example**:
222 -
223 -(% 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
224 224  )))
225 225  
226 226  (((
227 -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)
228 228  )))
229 229  
230 230  (((
231 -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.
232 -
233 -
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.
234 234  )))
235 235  
236 236  (((
237 -(% 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
238 238  )))
239 239  
240 240  (((
241 -RETURN2: 01 03 02 08 DC BE 1D(return data)
210 +RETURN2:01 03 02 08 DC BE 1D(return data)
242 242  )))
243 243  
244 244  (((
245 -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.
246 -
247 -
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.
248 248  )))
249 249  
250 250  (((
251 -(% 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
252 252  )))
253 253  
254 254  (((
255 -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)
256 256  )))
257 257  
258 258  (((
259 -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.
260 260  )))
261 261  
262 262  (((
263 -Payload: 01 00 02 39 85 08 DC 00 00 00 44
230 +Payload:01 00 02 39 85 08 DC 00 00 00 44
264 264  )))
265 265  
266 -[[image:image-20220601142936-6.png]]
233 +[[image:image-20220527093204-13.png]]
267 267  
268 268  AT COMMAND
269 269  
... ... @@ -270,16 +270,13 @@
270 270  
271 271  (% 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.**
272 272  
240 +[[image:image-20220527093251-14.png]]
273 273  
274 -[[image:image-20220601143642-2.png]]
275 -
276 276  AT COMMAND
277 277  
278 278  
245 +==== 1.3.3.2 via LoRaWAN DOWNLINK ====
279 279  
280 -==== **1.3.3.2 via LoRaWAN DOWNLINK** ====
281 -
282 -
283 283  [[image:image-20220527093358-15.png]]
284 284  
285 285  (((
... ... @@ -291,7 +291,7 @@
291 291  )))
292 292  
293 293  (((
294 -(% style="color:#4f81bd" %)**Type Code 0xAF**
258 +**Type Code 0xAF**
295 295  )))
296 296  
297 297  (((
... ... @@ -302,7 +302,7 @@
302 302  )))
303 303  
304 304  (((
305 -(% style="color:red" %)Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
269 +Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
306 306  )))
307 307  
308 308  (((
... ... @@ -338,47 +338,40 @@
338 338  )))
339 339  
340 340  (((
341 -
342 -
343 -(% style="color:blue" %)**Example:**
305 +Example:
344 344  )))
345 345  
346 346  (((
347 -**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
348 348  )))
349 349  
350 -[[image:image-20220601144149-6.png]]
312 +[[image:image-20220527093430-16.png]]
351 351  
352 352  DOWNLINK
353 353  
354 354  
317 +[[image:image-20220527093508-17.png]]
355 355  
356 -[[image:image-20220601143803-3.png]]
357 -
358 358  DOWNLINK
359 359  
360 360  
322 +[[image:image-20220527093530-18.png]]
361 361  
362 -[[image:image-20220601144053-5.png]]
363 -
364 364  DOWNLINK
365 365  
366 366  
327 +[[~[~[image:https://wiki.dragino.com/images/thumb/3/39/DOWNLINK_METER5.png/600px-DOWNLINK_METER5.png~|~|height="176" width="600"~]~]>>url:https://wiki.dragino.com/index.php/File:DOWNLINK_METER5.png]]
367 367  
368 -[[image:image-20220601143921-4.png]]
369 -
370 370  DOWNLINK
371 371  
372 372  
332 +[[image:https://wiki.dragino.com/images/thumb/a/a2/DOWNLINK_METER6.png/600px-DOWNLINK_METER6.png||height="365" width="600"]]
373 373  
374 -[[image:image-20220601142805-5.png]]
375 -
376 376  DOWNLINK
377 377  
378 378  
337 +=== 1.3.4 How to configure and output commands for RS485 to USB ===
379 379  
380 -=== **1.3.4 How to configure and output commands for RS485 to USB** ===
381 -
382 382  (((
383 383  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.
384 384  )))
... ... @@ -397,47 +397,36 @@
397 397  
398 398  (((
399 399  check digit: Even
400 -
401 -
402 402  )))
403 403  
404 -[[image:image-20220527093708-21.png]]
359 +[[image:https://wiki.dragino.com/images/thumb/8/8f/Usb_meter2.jpg/600px-Usb_meter2.jpg||height="725" width="544"]]
405 405  
406 406  USB
407 407  
408 408  
364 +[[image:https://wiki.dragino.com/images/thumb/6/62/Usb_meter1.jpg/600px-Usb_meter1.jpg||height="728" width="546"]]
409 409  
410 -[[image:image-20220527093747-22.png]]
411 -
412 412  USB
413 413  
414 414  
415 -
416 416  (((
417 417  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.
418 -
419 -
420 420  )))
421 421  
422 422  (((
423 -(% style="color:blue" %)**Example:**  (%%)input：01 03 00 31 00 02 95 c4
374 +**Example:**  input：01 03 00 31 00 02 95 c4
424 424  )))
425 425  
426 426  (((
427 427   output：01 03 04 00 00 00 42 7A 02
428 -
429 -
430 430  )))
431 431  
432 -[[image:image-20220527093821-23.png]]
381 +[[image:https://wiki.dragino.com/images/thumb/b/b3/Usb_meter3.jpg/600px-Usb_meter3.jpg||height="466" width="600"]]
433 433  
434 434  USB
435 435  
385 +=== 1.3.5 How to configure multiple devices and modify device addresses ===
436 436  
437 -
438 -=== **1.3.5 How to configure multiple devices and modify device addresses** ===
439 -
440 -
441 441  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.
442 442  
443 443  (((
... ... @@ -446,17 +446,14 @@
446 446  )))
447 447  )))
448 448  
449 -[[image:image-20220601142044-1.png]]
395 +[[image:https://wiki.dragino.com/images/thumb/1/1f/Double_meter3.png/600px-Double_meter3.png||alt="Double meter3.png" height="83" width="600"]]
450 450  
397 +**Example**:These two meters are examples of setting parameters and device addresses.
451 451  
452 -(% style="color:blue" %)**Example**(%%): These two meters are examples of setting parameters and device addresses.
399 +[[image:https://wiki.dragino.com/images/thumb/e/ee/Double_meter1.jpg/600px-Double_meter1.jpg||alt="Double meter1.jpg" height="737" width="553"]]
453 453  
454 -[[image:image-20220527093950-25.png]]
401 +[[image:https://wiki.dragino.com/images/thumb/7/72/Double_meter2.jpg/600px-Double_meter2.jpg||alt="Double meter2.jpg" height="733" width="550"]]
455 455  
456 -
457 -[[image:image-20220527094028-26.png]]
458 -
459 -
460 460  (((
461 461  (((
462 462  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.
... ... @@ -465,7 +465,7 @@
465 465  
466 466  (((
467 467  (((
468 -We can use **AT+CFGDEV** to set the device address.
411 +We can use AT+CFGDEV to set the device address.
469 469  )))
470 470  )))
471 471  
... ... @@ -475,14 +475,10 @@
475 475  )))
476 476  )))
477 477  
478 -[[image:image-20220601142354-2.png]]
421 +[[image:https://wiki.dragino.com/images/6/6b/Double_meter4.png||alt="Double meter4.png" height="141" width="456"]]
479 479  
423 +AT+CFGDEV:01 10 00 61 00 01 02 00 02,1
480 480  
481 -(% class="box infomessage" %)
482 -(((
483 -**AT+CFGDEV:01 10 00 61 00 01 02 00 02,1**
484 -)))
485 -
486 486  * 01:device adaress
487 487  
488 488  * 10:function code
... ... @@ -503,64 +503,43 @@
503 503  
504 504  Its default device address is 01, and the following are the parameters for configuring two energy meters.
505 505  
506 -[[image:image-20220601142452-3.png]]
445 +[[image:https://wiki.dragino.com/images/1/13/Meter11.png||alt="Meter11.png" height="576" width="379"]]
507 507  
447 +[[image:https://wiki.dragino.com/images/thumb/7/7e/Meter12.png/600px-Meter12.png||alt="Meter12.png" height="262" width="600"]]
508 508  
509 -[[image:image-20220601142607-4.png]]
449 +PAYLOAD:01 08 DF 43 62
510 510  
511 -
512 -(% style="color:blue" %)**PAYLOAD: 01 08 DF 43 62**
513 -
514 514  * 08 DF is the valid value of the meter with device address 02.
515 515  * 43 62 is the valid value of the meter with device address 01.
516 516  
517 -
518 -
519 -
520 520  == 1.4 Example 4: Circuit Breaker Remote Open Close ==
521 521  
456 +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:
522 522  
523 -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.
458 +[[image:https://wiki.dragino.com/images/thumb/f/fa/RS485_04_2.png/600px-RS485_04_2.png||height="336" width="600"]]
524 524  
525 -The structure is like below:
526 -
527 -[[image:image-20220527094330-30.png]]
528 -
529 529  Connection
530 530  
462 +* [[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
531 531  
532 -* 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/]]
533 -
534 -
535 -
536 -
537 537  == 1.5 Example 5: SEM Three Energy Meter with RS485-BL or RS485-LN ==
538 538  
539 -
540 540  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:
541 541  
542 -* 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||style="background-color: rgb(255, 255, 255);"]]
543 -* 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]]
468 +* [[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
544 544  
470 +* [[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
545 545  
472 +== 1.6 Example 6:CEM C31 485-T1-MID Energy Meter with RS485-LN ==
546 546  
547 -
548 -== 1.6 Example 6: CEM C31 485-T1-MID Energy Meter with RS485-LN ==
549 -
550 -
551 551  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:
552 552  
553 -* 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||style="background-color: rgb(255, 255, 255);"]]
476 +* [[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
554 554  
478 +== 1.7 Example 7:Schneider Electric PLC M221 with RS485-BL ==
555 555  
480 +[[image:https://wiki.dragino.com/images/thumb/9/97/PLC_M221.png/600px-PLC_M221.png||height="353" width="600"]]
556 556  
557 -
558 -== 1.7 Example 7: Schneider Electric PLC M221 with RS485-BL ==
559 -
560 -
561 -[[image:image-20220527094556-31.png]]
562 -
563 563  Network Structure
564 564  
565 -
566 566  * [[Reference Instruction>>url:https://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Schneider%20Electric%20PLC/]]
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