Last modified by Karry Zhuang on 2024/07/11 11:58
<
From version < 38.2 >
edited by Xiaoling
on 2022/05/27 09:47
To version < 60.13 >
edited by Xiaoling
on 2023/04/20 10:19
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Summary

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Content
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1 -(% class="wikigeneratedid" %)
2 - **Contents:**
1 +**Table of Contents:**
3 3  
4 4  {{toc/}}
5 5  
5 +
6 +
7 +
8 +
9 +
6 6  = 1. Introduction =
7 7  
12 +
8 8  This article provide the examples for RS485-LN to connect to different type of RS485 sensors.
9 9  
10 10  
11 11  == 1.1 Example 1: Connect to Leak relay and VFD ==
12 12  
18 +
13 13  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:
14 14  
15 -[[image:image-20220527091852-1.png]]
16 16  
17 -Connection
22 +[[image:image-20220527091852-1.png||height="547" width="994"]]
18 18  
24 +**Connection**
19 19  
20 20  
27 +
21 21  [[image:image-20220527091942-2.png]](% style="display:none" %)
22 22  
23 -Connection
30 +**Connection**
24 24  
25 25  
26 -Related documents:
33 +(% style="color:blue" %)**Related documents:**
27 27  
28 -* [[Solar Pump with Dragino>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Relay_VFD/]] : System Structure
29 -* [[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 +
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);"]]
38 +
30 30  * [[Video Demo>>url:https://www.youtube.com/watch?v=TAFZ5eaf-MY&t=6s&ab_channel=XavierFlorensaBerenguer]]
31 31  
41 +
42 +
32 32  == 1.2 Example 2: Connect to Pulse Counter ==
33 33  
45 +
34 34  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:
35 35  
36 -[[image:image-20220527092058-3.png]]
37 37  
38 -Connection
49 +[[image:image-20220527092058-3.png||height="552" width="905"]]
39 39  
51 +**Connection**
40 40  
41 -[[image:image-20220527092146-4.png]]
42 42  
43 -Connection
44 44  
45 -* [[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
55 +[[image:image-20220527092146-4.png||height="507" width="906"]]
56 +
57 +**Connection**
58 +
59 +
60 +(% style="color:blue" %)**Related documents:**
61 +
62 +* 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"]]
63 +
46 46  * [[Dragino Solution in Farm>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/&file=Dragino%20on%20Farms.pptx]]
47 47  
48 -== ==
49 49  
50 -== 1.3 Example3: Use RS485-LN with energy meters ==
51 51  
68 +== 1.3 Example 3: Use RS485-LN with energy meters ==
69 +
52 52  === 1.3.1 OverView ===
53 53  
72 +
54 54  (((
55 -**Note**：The specifications of each energy meter are different, please refer to your own energy meter specifications.
74 +(% style="color:red" %)**Note**：**The specifications of each energy meter are different, please refer to your own energy meter specifications.**
56 56  )))
57 57  
58 58  (((
59 59  This example describes a single-phase meter.This is the connection between the RS485-LN and the energy meter.
79 +
80 +
60 60  )))
61 61  
62 62  [[image:image-20220527092419-5.png]]
63 63  
64 -Connection1
85 +**Connection1**
65 65  
66 66  
88 +
67 67  (((
68 -How to connect with Energy Meter：
90 +(% style="color:blue" %)**How to connect with Energy Meter：**
91 +
92 +
69 69  )))
70 70  
71 71  (((
... ... @@ -77,114 +77,126 @@
77 77  )))
78 78  
79 79  (((
80 -Power Source VIN to RS485-LN VIN+
104 +Power Source **VIN** to RS485-LN **VIN+**
81 81  )))
82 82  
83 83  (((
84 -Power Source GND to RS485-LN VIN-
108 +Power Source **GND** to RS485-LN **VIN-**
85 85  )))
86 86  
87 87  (((
88 88  Once there is power, the RS485-LN will be on.
113 +
114 +
89 89  )))
90 90  
91 91  [[image:image-20220527092514-6.png]]
92 92  
93 -Connection2
119 +**Connection2**
94 94  
95 95  
122 +
96 96  [[image:image-20220527092555-7.png]]
97 97  
98 -Connection3
125 +**Connection3**
99 99  
100 100  
101 101  === 1.3.2 How to use the parameters of the energy meter and MODBUS commands ===
102 102  
130 +
103 103  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.
104 104  
105 -[[image:image-20220527092629-8.png]]
133 +[[image:image-20220601143257-10.png]]
106 106  
107 107  
108 -(% class="box infomessage" %)
109 -(((
110 -**Example:** AT+COMMAND1=01 03 00 00 00 01 84 0A
111 -)))
136 +(% style="color:blue" %)**Example:**(%%)  AT+COMMAND1=01 03 00 00 00 01 84 0A
112 112  
113 113  * The first byte : slave address code (=001～247)
139 +
114 114  * The second byte : read register value function code
141 +
115 115  * 3rd and 4th bytes: start address of register to be read
143 +
116 116  * 5th and 6th bytes: Number of registers to read
145 +
117 117  * 7th and 8th bytes: CRC16 checksum from bytes 1 to 6.
118 118  
119 119  (((
149 +
150 +
151 +
120 120  How to parse the reading of the return command of the parameter：
121 -)))
122 122  
123 -(% class="box infomessage" %)
124 -(((
125 -**Example:** RETURN1：01 03 02 08 FD 7E 05
154 +(% style="color:blue" %)**Example:**(%%) RETURN1：01 03 02 08 FD 7E 05
126 126  )))
127 127  
128 128  * The first byte ARD: slave address code (=001～254)
158 +
129 129  * The second byte: Return to read function code
160 +
130 130  * 3rd byte: total number of bytes
162 +
131 131  * 4th～5th bytes: register data
164 +
132 132  * The 6th and 7th bytes: CRC16 checksum
166 +
133 133  * 08 FD is register data. Use short integer 16 bits to convert to decimal, get 2301, then 230.1V is the voltage.
134 134  
135 -(% class="wikigeneratedid" %)
136 -(((
137 -
138 -)))
139 139  
170 +
140 140  === 1.3.3 How to configure RS485-LN and parse output commands ===
141 141  
173 +
142 142  RS485-LN provides two configuration methods: AT COMMAND and DOWNLINK.
143 143  
144 144  
145 -==== 1.3.3.1 via AT COMMAND: ====
177 +==== **1.3.3.1 via AT COMMAND** ====
146 146  
147 -First, we can use **AT+CFGDEV** to get the return value, and we can also judge whether the input parameters are correct.
148 148  
180 +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.
181 +
149 149  (((
150 150  If the configured parameters and commands are incorrect, the return value is not obtained.
184 +
185 +
151 151  )))
152 152  
153 -[[image:image-20220527092748-9.png]]
188 +[[image:image-20220601143201-9.png]]
154 154  
155 -AT COMMAND
190 +**AT COMMAND**
156 156  
157 157  
158 158  (% class="box infomessage" %)
159 159  (((
160 - AT+DATACUTx : This command defines how to handle the return from AT+COMMANDx, max reture length is 40 bytes. AT+DATACUTx=a,b,c
195 + (% _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
161 161  )))
162 162  
163 -a: length for the return of AT+COMMAND
198 +a:  length for the return of AT+COMMAND
164 164  
165 -b:1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.
200 +b: 1: grab valid value by byte, max 6 bytes;  2: grab valid value by bytes section, max 3 sections.
166 166  
167 -c: define the position for valid value.
202 +c:  define the position for valid value.
168 168  
169 -[[image:image-20220527092936-10.png]]
204 +[[image:image-20220601143115-8.png]]
170 170  
171 -AT COMMAND
206 +**AT COMMAND**
172 172  
173 173  
209 +
174 174  PAYLOAD is available after the valid value is intercepted.
175 175  
212 +[[image:image-20220601143046-7.png]]
176 176  
177 -[[image:image-20220527093059-11.png]]
214 +**AT COMMAND**
178 178  
179 -AT COMMAND
180 180  
181 181  
182 182  You can get configured PAYLOAD on TTN.
183 183  
184 -[[image:image-20220527093133-12.png]]
220 +[[image:image-20220601143519-1.png]]
185 185  
186 186  (((
187 -AT COMMAND
223 +**AT COMMAND**
188 188  )))
189 189  
190 190  (((
... ... @@ -192,71 +192,79 @@
192 192  )))
193 193  
194 194  (((
195 -**Example**: CMD1:Read current data with MODBUS command. address:0x03 AT+COMMAND1= 01 03 00 03 00 01,1
231 +(% style="color:blue" %)**Example**:
232 +
233 +(% style="color:red" %)**CMD1:**(%%) Read current data with MODBUS command. address: 0x03 AT+COMMAND1= 01 03 00 03 00 01,1
196 196  )))
197 197  
198 198  (((
199 -RETURN1:01 03 02 00 02 39 85 00 00(return data)
237 +RETURN1: 01 03 02 00 02 39 85 00 00(return data)
200 200  )))
201 201  
202 202  (((
203 -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.
241 +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.
242 +
243 +
204 204  )))
205 205  
206 206  (((
207 -CMD2:Read voltage data with MODBUS command. address:0x00 AT+COMMAND2= 01 03 00 00 00 01,1
247 +(% style="color:red" %)**CMD2: **(%%)Read voltage data with MODBUS command. address: 0x00 AT+COMMAND2= 01 03 00 00 00 01,1
208 208  )))
209 209  
210 210  (((
211 -RETURN2:01 03 02 08 DC BE 1D(return data)
251 +RETURN2: 01 03 02 08 DC BE 1D(return data)
212 212  )))
213 213  
214 214  (((
215 -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.
255 +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.
256 +
257 +
216 216  )))
217 217  
218 218  (((
219 -CMD3:Read total active energy data with MODBUS command. address:0x0031 AT+COMMAND3= 01 03 00 31 00 02,1
261 +(% style="color:red" %)**CMD3:**(%%) Read total active energy data with MODBUS command. address: 0x0031 AT+COMMAND3= 01 03 00 31 00 02,1
220 220  )))
221 221  
222 222  (((
223 -RETURN3:01 03 04 00 00 00 44 FA 00(return data)
265 +RETURN3: 01 03 04 00 00 00 44 FA 00(return data)
224 224  )))
225 225  
226 226  (((
227 -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.
269 +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.
228 228  )))
229 229  
230 230  (((
231 -Payload:01 00 02 39 85 08 DC 00 00 00 44
273 +Payload: 01 00 02 39 85 08 DC 00 00 00 44
232 232  )))
233 233  
234 -[[image:image-20220527093204-13.png]]
276 +[[image:image-20220601142936-6.png]]
235 235  
236 236  AT COMMAND
237 237  
238 238  
239 -(% 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.**
240 240  
241 -[[image:image-20220527093251-14.png]]
282 +(% 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.**
242 242  
284 +
285 +[[image:image-20220601143642-2.png]]
286 +
243 243  AT COMMAND
244 244  
245 245  
246 -==== 1.3.3.2 via LoRaWAN DOWNLINK ====
247 247  
291 +==== **1.3.3.2 via LoRaWAN DOWNLINK** ====
292 +
293 +
248 248  [[image:image-20220527093358-15.png]]
249 249  
250 250  (((
251 -DOWNLINK
297 +**DOWNLINK**
252 252  )))
253 253  
254 -(((
255 -
256 -)))
257 257  
301 +
258 258  (((
259 -**Type Code 0xAF**
303 +(% style="color:blue" %)**Type Code 0xAF**
260 260  )))
261 261  
262 262  (((
... ... @@ -267,7 +267,7 @@
267 267  )))
268 268  
269 269  (((
270 -Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
314 +(% style="color:red" %)**Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.**
271 271  )))
272 272  
273 273  (((
... ... @@ -302,41 +302,47 @@
302 302  will execute an uplink after got this command.
303 303  )))
304 304  
349 +
305 305  (((
306 -Example:
351 +(% style="color:blue" %)**Example:**
307 307  )))
308 308  
309 309  (((
310 -AF 03 01 06 0A 05 00 04 00 01 00: Same as AT+COMMAND3=0A 05 00 04 00 01,1
355 +**AF 03 01 06 0A 05 00 04 00 01 00**: Same as AT+COMMAND3=0A 05 00 04 00 01,1
311 311  )))
312 312  
313 -[[image:image-20220527093430-16.png]]
358 +[[image:image-20220601144149-6.png]]
314 314  
315 -DOWNLINK
360 +**DOWNLINK**
316 316  
317 317  
318 -[[image:image-20220527093508-17.png]]
319 319  
320 -DOWNLINK
364 +[[image:image-20220601143803-3.png]]
321 321  
366 +**DOWNLINK**
322 322  
323 -[[image:image-20220527093530-18.png]]
324 324  
325 -DOWNLINK
326 326  
370 +[[image:image-20220601144053-5.png]]
327 327  
328 -[[image:image-20220527093607-19.png]]
372 +**DOWNLINK**
329 329  
330 -DOWNLINK
331 331  
332 332  
333 -[[image:image-20220527093628-20.png]]
376 +[[image:image-20220601143921-4.png]]
334 334  
335 -DOWNLINK
336 -
378 +**DOWNLINK**
337 337  
380 +
381 +
382 +[[image:image-20220601142805-5.png]]
383 +
384 +**DOWNLINK**
385 +
386 +
338 338  === 1.3.4 How to configure and output commands for RS485 to USB ===
339 339  
389 +
340 340  (((
341 341  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.
342 342  )))
... ... @@ -355,37 +355,45 @@
355 355  
356 356  (((
357 357  check digit: Even
408 +
409 +
358 358  )))
359 359  
360 360  [[image:image-20220527093708-21.png]]
361 361  
362 -USB
414 +**USB**
363 363  
364 364  
417 +
365 365  [[image:image-20220527093747-22.png]]
366 366  
367 -USB
420 +**USB**
368 368  
369 369  
423 +
370 370  (((
371 371  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.
372 372  )))
373 373  
374 374  (((
375 -**Example:**  input：01 03 00 31 00 02 95 c4
429 +(% style="color:blue" %)**Example:**  (%%)input：01 03 00 31 00 02 95 c4
376 376  )))
377 377  
378 378  (((
379 379   output：01 03 04 00 00 00 42 7A 02
434 +
435 +
380 380  )))
381 381  
382 382  [[image:image-20220527093821-23.png]]
383 383  
384 -USB
440 +**USB**
385 385  
386 386  
443 +
387 387  === 1.3.5 How to configure multiple devices and modify device addresses ===
388 388  
446 +
389 389  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.
390 390  
391 391  (((
... ... @@ -394,15 +394,18 @@
394 394  )))
395 395  )))
396 396  
397 -[[image:image-20220527093849-24.png]]
455 +[[image:image-20220601142044-1.png]]
398 398  
399 399  
400 -**Example**:These two meters are examples of setting parameters and device addresses.
458 +(% style="color:blue" %)**Example**(%%): These two meters are examples of setting parameters and device addresses.
401 401  
460 +
402 402  [[image:image-20220527093950-25.png]]
403 403  
463 +
404 404  [[image:image-20220527094028-26.png]]
405 405  
466 +
406 406  (((
407 407  (((
408 408  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.
... ... @@ -411,7 +411,7 @@
411 411  
412 412  (((
413 413  (((
414 -We can use AT+CFGDEV to set the device address.
475 +We can use (% style="color:blue" %)**AT+CFGDEV**(%%) to set the device address.
415 415  )))
416 416  )))
417 417  
... ... @@ -421,16 +421,17 @@
421 421  )))
422 422  )))
423 423  
424 -[[image:image-20220527094100-27.png]]
485 +[[image:image-20220601142354-2.png]]
425 425  
487 +
426 426  (% class="box infomessage" %)
427 427  (((
428 428  **AT+CFGDEV:01 10 00 61 00 01 02 00 02,1**
429 429  )))
430 430  
431 -* 01:device adaress
493 +* 01: device adaress
432 432  
433 -* 10:function code
495 +* 10: function code
434 434  
435 435  * 00 61：Register address
436 436  
... ... @@ -448,44 +448,62 @@
448 448  
449 449  Its default device address is 01, and the following are the parameters for configuring two energy meters.
450 450  
451 -[[image:image-20220527094150-28.png]]
513 +[[image:image-20220601142452-3.png]]
452 452  
453 453  
454 -[[image:image-20220527094224-29.png]]
516 +[[image:image-20220601142607-4.png]]
455 455  
456 -PAYLOAD:01 08 DF 43 62
457 457  
519 +(% style="color:blue" %)**PAYLOAD: 01 08 DF 43 62**
520 +
458 458  * 08 DF is the valid value of the meter with device address 02.
459 459  * 43 62 is the valid value of the meter with device address 01.
460 460  
524 +(% style="display:none" %) (%%)
525 +
526 +
461 461  == 1.4 Example 4: Circuit Breaker Remote Open Close ==
462 462  
463 -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:
464 464  
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-LN to connect to SCHNEIDER SMART and Monitor and control your cabinet remotely with no wires and with Dragino RS485-LN LoRaWAN technology.
531 +
532 +The structure is like below:
533 +
465 465  [[image:image-20220527094330-30.png]]
466 466  
467 -Connection
536 +**Connection**
468 468  
469 -* [[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
470 470  
539 +* 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"]]
540 +
541 +
542 +
471 471  == 1.5 Example 5: SEM Three Energy Meter with RS485-BL or RS485-LN ==
472 472  
545 +
473 473  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:
474 474  
475 -* [[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
548 +* 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);"]]
476 476  
477 -* [[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
550 +* 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"]]
478 478  
479 -== 1.6 Example 6:CEM C31 485-T1-MID Energy Meter with RS485-LN ==
480 480  
553 +
554 +== 1.6 Example 6: CEM C31 485-T1-MID Energy Meter with RS485-LN ==
555 +
556 +
481 481  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:
482 482  
483 -* [[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
559 +* 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);"]]
484 484  
485 -== 1.7 Example 7:Schneider Electric PLC M221 with RS485-BL ==
486 486  
562 +
563 +== 1.7 Example 7: Schneider Electric PLC M221 with RS485-BL ==
564 +
565 +
487 487  [[image:image-20220527094556-31.png]]
488 488  
489 489  Network Structure
490 490  
570 +
491 491  * [[Reference Instruction>>url:https://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Schneider%20Electric%20PLC/]]
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