Last modified by Karry Zhuang on 2024/07/11 11:58
<
From version < 57.17 >
edited by Xiaoling
on 2022/07/14 09:58
To version < 22.1 >
edited by Xiaoling
on 2022/05/27 09:34
>
Change comment: Uploaded new attachment "image-20220527093430-16.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]]
... ... @@ -29,45 +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 -== **1.2 Example 2: Connect to Pulse Counter** ==
40 -
41 -
42 42  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:
43 43  
44 -
45 45  [[image:image-20220527092058-3.png]]
46 46  
47 47  Connection
48 48  
49 49  
50 -
51 51  [[image:image-20220527092146-4.png]]
52 52  
53 53  Connection
54 54  
55 -
56 -(% style="color:blue" %)**Related documents:**
57 -
58 -* 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
59 59  * [[Dragino Solution in Farm>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/&file=Dragino%20on%20Farms.pptx]]
60 60  
47 +== ==
61 61  
49 +== 1.3 Example3: Use RS485-LN with energy meters ==
62 62  
63 -== **1.3 Example3: Use RS485-LN with energy meters** ==
51 +=== 1.3.1 OverView ===
64 64  
65 -
66 -=== **1.3.1 OverView** ===
67 -
68 -
69 69  (((
70 -(% 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.
71 71  )))
72 72  
73 73  (((
... ... @@ -79,11 +79,8 @@
79 79  Connection1
80 80  
81 81  
82 -
83 83  (((
84 -(% style="color:blue" %)**How to connect with Energy Meter：**
85 -
86 -
67 +How to connect with Energy Meter：
87 87  )))
88 88  
89 89  (((
... ... @@ -116,15 +116,17 @@
116 116  Connection3
117 117  
118 118  
119 -=== **1.3.2 How to use the parameters of the energy meter and MODBUS commands** ===
100 +=== 1.3.2 How to use the parameters of the energy meter and MODBUS commands ===
120 120  
121 -
122 122  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.
123 123  
124 -[[image:image-20220601143257-10.png]]
104 +[[image:image-20220527092629-8.png]]
125 125  
126 126  
127 -(% 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 +)))
128 128  
129 129  * The first byte : slave address code (=001～247)
130 130  * The second byte : read register value function code
... ... @@ -133,12 +133,12 @@
133 133  * 7th and 8th bytes: CRC16 checksum from bytes 1 to 6.
134 134  
135 135  (((
136 -
137 -
138 -
139 139  How to parse the reading of the return command of the parameter：
120 +)))
140 140  
141 -(% 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
142 142  )))
143 143  
144 144  * The first byte ARD: slave address code (=001～254)
... ... @@ -151,27 +151,22 @@
151 151  (% class="wikigeneratedid" %)
152 152  (((
153 153  
154 -
155 -
156 -
157 157  )))
158 158  
159 -=== **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 ===
160 160  
161 -
162 162  RS485-LN provides two configuration methods: AT COMMAND and DOWNLINK.
163 163  
164 164  
165 -==== **1.3.3.1 via AT COMMAND** ====
144 +==== 1.3.3.1 via AT COMMAND: ====
166 166  
146 +First, we can use **AT+CFGDEV** to get the return value, and we can also judge whether the input parameters are correct.
167 167  
168 -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.
169 -
170 170  (((
171 171  If the configured parameters and commands are incorrect, the return value is not obtained.
172 172  )))
173 173  
174 -[[image:image-20220601143201-9.png]]
152 +[[image:image-20220527092748-9.png]]
175 175  
176 176  AT COMMAND
177 177  
... ... @@ -178,33 +178,31 @@
178 178  
179 179  (% class="box infomessage" %)
180 180  (((
181 - **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
182 182  )))
183 183  
184 -a:  length for the return of AT+COMMAND
162 +a: length for the return of AT+COMMAND
185 185  
186 -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.
187 187  
188 -c:  define the position for valid value.
166 +c: define the position for valid value.
189 189  
190 -[[image:image-20220601143115-8.png]]
168 +[[image:image-20220527092936-10.png]]
191 191  
192 192  AT COMMAND
193 193  
194 194  
195 -
196 196  PAYLOAD is available after the valid value is intercepted.
197 197  
198 198  
199 -[[image:image-20220601143046-7.png]]
176 +[[image:image-20220527093059-11.png]]
200 200  
201 201  AT COMMAND
202 202  
203 203  
204 -
205 205  You can get configured PAYLOAD on TTN.
206 206  
207 -[[image:image-20220601143519-1.png]]
183 +[[image:image-20220527093133-12.png]]
208 208  
209 209  (((
210 210  AT COMMAND
... ... @@ -215,52 +215,46 @@
215 215  )))
216 216  
217 217  (((
218 -(% style="color:blue" %)**Example**:
219 -
220 -**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
221 221  )))
222 222  
223 223  (((
224 -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)
225 225  )))
226 226  
227 227  (((
228 -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.
229 -
230 -
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.
231 231  )))
232 232  
233 233  (((
234 -**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
235 235  )))
236 236  
237 237  (((
238 -RETURN2: 01 03 02 08 DC BE 1D(return data)
210 +RETURN2:01 03 02 08 DC BE 1D(return data)
239 239  )))
240 240  
241 241  (((
242 -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.
243 -
244 -
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.
245 245  )))
246 246  
247 247  (((
248 -**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
249 249  )))
250 250  
251 251  (((
252 -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)
253 253  )))
254 254  
255 255  (((
256 -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.
257 257  )))
258 258  
259 259  (((
260 -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
261 261  )))
262 262  
263 -[[image:image-20220601142936-6.png]]
233 +[[image:image-20220527093204-13.png]]
264 264  
265 265  AT COMMAND
266 266  
... ... @@ -267,15 +267,13 @@
267 267  
268 268  (% 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.**
269 269  
240 +[[image:image-20220527093251-14.png]]
270 270  
271 -[[image:image-20220601143642-2.png]]
272 -
273 273  AT COMMAND
274 274  
275 275  
276 -==== **1.3.3.2 via LoRaWAN DOWNLINK** ====
245 +==== 1.3.3.2 via LoRaWAN DOWNLINK ====
277 277  
278 -
279 279  [[image:image-20220527093358-15.png]]
280 280  
281 281  (((
... ... @@ -287,7 +287,7 @@
287 287  )))
288 288  
289 289  (((
290 -(% style="color:#4f81bd" %)**Type Code 0xAF**
258 +**Type Code 0xAF**
291 291  )))
292 292  
293 293  (((
... ... @@ -298,7 +298,7 @@
298 298  )))
299 299  
300 300  (((
301 -(% 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.
302 302  )))
303 303  
304 304  (((
... ... @@ -334,45 +334,39 @@
334 334  )))
335 335  
336 336  (((
337 -
338 -
339 -(% style="color:blue" %)**Example:**
305 +Example:
340 340  )))
341 341  
342 342  (((
343 -**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
344 344  )))
345 345  
346 -[[image:image-20220601144149-6.png]]
312 +[[image:https://wiki.dragino.com/images/thumb/4/45/DOWNLINK_METER2.png/600px-DOWNLINK_METER2.png||height="208" width="600"]]
347 347  
348 348  DOWNLINK
349 349  
350 350  
317 +[[~[~[image:https://wiki.dragino.com/images/thumb/2/20/DOWNLINK_METER3.png/600px-DOWNLINK_METER3.png~|~|height="105" width="600"~]~]>>url:https://wiki.dragino.com/index.php/File:DOWNLINK_METER3.png]]
351 351  
352 -[[image:image-20220601143803-3.png]]
353 -
354 354  DOWNLINK
355 355  
356 356  
322 +[[image:https://wiki.dragino.com/images/thumb/2/27/DOWNLINK_METER4.png/600px-DOWNLINK_METER4.png||height="210" width="600"]]
357 357  
358 -[[image:image-20220601144053-5.png]]
359 -
360 360  DOWNLINK
361 361  
362 362  
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]]
363 363  
364 -[[image:image-20220601143921-4.png]]
365 -
366 366  DOWNLINK
367 367  
368 368  
332 +[[image:https://wiki.dragino.com/images/thumb/a/a2/DOWNLINK_METER6.png/600px-DOWNLINK_METER6.png||height="365" width="600"]]
369 369  
370 -[[image:image-20220601142805-5.png]]
371 -
372 372  DOWNLINK
373 373  
374 374  
375 -=== **1.3.4 How to configure and output commands for RS485 to USB** ===
337 +=== 1.3.4 How to configure and output commands for RS485 to USB ===
376 376  
377 377  (((
378 378  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.
... ... @@ -392,46 +392,36 @@
392 392  
393 393  (((
394 394  check digit: Even
395 -
396 -
397 397  )))
398 398  
399 -[[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"]]
400 400  
401 401  USB
402 402  
403 403  
364 +[[image:https://wiki.dragino.com/images/thumb/6/62/Usb_meter1.jpg/600px-Usb_meter1.jpg||height="728" width="546"]]
404 404  
405 -[[image:image-20220527093747-22.png]]
406 -
407 407  USB
408 408  
409 409  
410 -
411 411  (((
412 412  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.
413 -
414 -
415 415  )))
416 416  
417 417  (((
418 -(% style="color:blue" %)**Example:**  (%%)input：01 03 00 31 00 02 95 c4
374 +**Example:**  input：01 03 00 31 00 02 95 c4
419 419  )))
420 420  
421 421  (((
422 422   output：01 03 04 00 00 00 42 7A 02
423 -
424 -
425 425  )))
426 426  
427 -[[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"]]
428 428  
429 429  USB
430 430  
385 +=== 1.3.5 How to configure multiple devices and modify device addresses ===
431 431  
432 -=== **1.3.5 How to configure multiple devices and modify device addresses** ===
433 -
434 -
435 435  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.
436 436  
437 437  (((
... ... @@ -440,17 +440,14 @@
440 440  )))
441 441  )))
442 442  
443 -[[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"]]
444 444  
397 +**Example**:These two meters are examples of setting parameters and device addresses.
445 445  
446 -(% 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"]]
447 447  
448 -[[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"]]
449 449  
450 -
451 -[[image:image-20220527094028-26.png]]
452 -
453 -
454 454  (((
455 455  (((
456 456  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.
... ... @@ -459,7 +459,7 @@
459 459  
460 460  (((
461 461  (((
462 -We can use **AT+CFGDEV** to set the device address.
411 +We can use AT+CFGDEV to set the device address.
463 463  )))
464 464  )))
465 465  
... ... @@ -469,14 +469,10 @@
469 469  )))
470 470  )))
471 471  
472 -[[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"]]
473 473  
423 +AT+CFGDEV:01 10 00 61 00 01 02 00 02,1
474 474  
475 -(% class="box infomessage" %)
476 -(((
477 -**AT+CFGDEV:01 10 00 61 00 01 02 00 02,1**
478 -)))
479 -
480 480  * 01:device adaress
481 481  
482 482  * 10:function code
... ... @@ -497,56 +497,43 @@
497 497  
498 498  Its default device address is 01, and the following are the parameters for configuring two energy meters.
499 499  
500 -[[image:image-20220601142452-3.png]]
445 +[[image:https://wiki.dragino.com/images/1/13/Meter11.png||alt="Meter11.png" height="576" width="379"]]
501 501  
447 +[[image:https://wiki.dragino.com/images/thumb/7/7e/Meter12.png/600px-Meter12.png||alt="Meter12.png" height="262" width="600"]]
502 502  
503 -[[image:image-20220601142607-4.png]]
449 +PAYLOAD:01 08 DF 43 62
504 504  
505 -
506 -**PAYLOAD:01 08 DF 43 62**
507 -
508 508  * 08 DF is the valid value of the meter with device address 02.
509 509  * 43 62 is the valid value of the meter with device address 01.
510 510  
511 -
512 512  == 1.4 Example 4: Circuit Breaker Remote Open Close ==
513 513  
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:
514 514  
515 -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"]]
516 516  
517 -The structure is like below:
518 -
519 -[[image:image-20220527094330-30.png]]
520 -
521 521  Connection
522 522  
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
523 523  
524 -* 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/]]
525 -
526 -
527 527  == 1.5 Example 5: SEM Three Energy Meter with RS485-BL or RS485-LN ==
528 528  
529 -
530 530  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:
531 531  
532 -* 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);"]]
533 -* 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
534 534  
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
535 535  
536 -== 1.6 Example 6: CEM C31 485-T1-MID Energy Meter with RS485-LN ==
472 +== 1.6 Example 6:CEM C31 485-T1-MID Energy Meter with RS485-LN ==
537 537  
538 -
539 539  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:
540 540  
541 -* 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
542 542  
478 +== 1.7 Example 7:Schneider Electric PLC M221 with RS485-BL ==
543 543  
544 -== 1.7 Example 7: Schneider Electric PLC M221 with RS485-BL ==
480 +[[image:https://wiki.dragino.com/images/thumb/9/97/PLC_M221.png/600px-PLC_M221.png||height="353" width="600"]]
545 545  
546 -
547 -[[image:image-20220527094556-31.png]]
548 -
549 549  Network Structure
550 550  
551 -
552 552  * [[Reference Instruction>>url:https://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Schneider%20Electric%20PLC/]]
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