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<
From version < 41.16 >
edited by Xiaoling
on 2022/06/01 14:15
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  (((
... ... @@ -205,69 +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  
260 -[[image:image-20220527093251-14.png]]
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.**
261 261  
280 +
281 +[[image:image-20220601143642-2.png]]
282 +
262 262  AT COMMAND
263 263  
264 264  
265 -==== **1.3.3.2 via LoRaWAN DOWNLINK** ====
266 266  
287 +==== 1.3.3.2 via LoRaWAN DOWNLINK ====
288 +
289 +
267 267  [[image:image-20220527093358-15.png]]
268 268  
269 269  (((
270 -DOWNLINK
293 +**DOWNLINK**
271 271  )))
272 272  
273 273  (((
... ... @@ -275,7 +275,7 @@
275 275  )))
276 276  
277 277  (((
278 -(% style="color:#4f81bd" %)**Type Code 0xAF**
301 +(% style="color:blue" %)**Type Code 0xAF**
279 279  )))
280 280  
281 281  (((
... ... @@ -286,7 +286,9 @@
286 286  )))
287 287  
288 288  (((
289 -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 +
290 290  )))
291 291  
292 292  (((
... ... @@ -322,7 +322,9 @@
322 322  )))
323 323  
324 324  (((
325 -(% style="color:#4f81bd" %)**Example:**
350 +
351 +
352 +(% style="color:blue" %)**Example:**
326 326  )))
327 327  
328 328  (((
... ... @@ -329,33 +329,38 @@
329 329  **AF 03 01 06 0A 05 00 04 00 01 00**: Same as AT+COMMAND3=0A 05 00 04 00 01,1
330 330  )))
331 331  
332 -[[image:image-20220527093430-16.png]]
359 +[[image:image-20220601144149-6.png]]
333 333  
334 -DOWNLINK
361 +**DOWNLINK**
335 335  
336 336  
337 -[[image:image-20220527093508-17.png]]
338 338  
339 -DOWNLINK
365 +[[image:image-20220601143803-3.png]]
340 340  
367 +**DOWNLINK**
341 341  
342 -[[image:image-20220527093530-18.png]]
343 343  
344 -DOWNLINK
345 345  
371 +[[image:image-20220601144053-5.png]]
346 346  
347 -[[image:image-20220527093607-19.png]]
373 +**DOWNLINK**
348 348  
349 -DOWNLINK
350 350  
351 351  
352 -[[image:image-20220527093628-20.png]]
377 +[[image:image-20220601143921-4.png]]
353 353  
354 -DOWNLINK
355 -
379 +**DOWNLINK**
356 356  
357 -=== **1.3.4 How to configure and output commands for RS485 to USB** ===
358 358  
382 +
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 +
359 359  (((
360 360  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.
361 361  )))
... ... @@ -374,37 +374,47 @@
374 374  
375 375  (((
376 376  check digit: Even
409 +
410 +
377 377  )))
378 378  
379 379  [[image:image-20220527093708-21.png]]
380 380  
381 -USB
415 +**USB**
382 382  
383 383  
418 +
384 384  [[image:image-20220527093747-22.png]]
385 385  
386 -USB
421 +**USB**
387 387  
388 388  
424 +
389 389  (((
390 390  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 +
391 391  )))
392 392  
393 393  (((
394 -(% 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
395 395  )))
396 396  
397 397  (((
398 398   output：01 03 04 00 00 00 42 7A 02
437 +
438 +
399 399  )))
400 400  
401 401  [[image:image-20220527093821-23.png]]
402 402  
403 -USB
443 +**USB**
404 404  
405 405  
406 -=== **1.3.5 How to configure multiple devices and modify device addresses** ===
407 407  
447 +=== 1.3.5 How to configure multiple devices and modify device addresses ===
448 +
449 +
408 408  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.
409 409  
410 410  (((
... ... @@ -413,15 +413,18 @@
413 413  )))
414 414  )))
415 415  
416 -[[image:image-20220527093849-24.png]]
458 +[[image:image-20220601142044-1.png]]
417 417  
418 418  
419 -**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.
420 420  
463 +
421 421  [[image:image-20220527093950-25.png]]
422 422  
466 +
423 423  [[image:image-20220527094028-26.png]]
424 424  
469 +
425 425  (((
426 426  (((
427 427  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.
... ... @@ -430,7 +430,7 @@
430 430  
431 431  (((
432 432  (((
433 -We can use AT+CFGDEV to set the device address.
478 +We can use (% style="color:blue" %)**AT+CFGDEV**(%%) to set the device address.
434 434  )))
435 435  )))
436 436  
... ... @@ -440,16 +440,17 @@
440 440  )))
441 441  )))
442 442  
443 -[[image:image-20220527094100-27.png]]
488 +[[image:image-20220601142354-2.png]]
444 444  
490 +
445 445  (% class="box infomessage" %)
446 446  (((
447 447  **AT+CFGDEV:01 10 00 61 00 01 02 00 02,1**
448 448  )))
449 449  
450 -* 01:device adaress
496 +* 01: device adaress
451 451  
452 -* 10:function code
498 +* 10: function code
453 453  
454 454  * 00 61：Register address
455 455  
... ... @@ -467,46 +467,62 @@
467 467  
468 468  Its default device address is 01, and the following are the parameters for configuring two energy meters.
469 469  
470 -[[image:image-20220527094150-28.png]]
516 +[[image:image-20220601142452-3.png]]
471 471  
472 472  
473 -[[image:image-20220527094224-29.png]]
519 +[[image:image-20220601142607-4.png]]
474 474  
475 -**PAYLOAD:01 08 DF 43 62**
476 476  
522 +(% style="color:blue" %)**PAYLOAD: 01 08 DF 43 62**
523 +
477 477  * 08 DF is the valid value of the meter with device address 02.
478 478  * 43 62 is the valid value of the meter with device address 01.
479 479  
527 +(% style="display:none" %) (%%)
480 480  
529 +(% style="display:none" %) (%%)
530 +
481 481  == 1.4 Example 4: Circuit Breaker Remote Open Close ==
482 482  
483 -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:
484 484  
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 +
485 485  [[image:image-20220527094330-30.png]]
486 486  
487 487  Connection
488 488  
489 -* [[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
490 490  
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"]]
491 491  
545 +
546 +
492 492  == 1.5 Example 5: SEM Three Energy Meter with RS485-BL or RS485-LN ==
493 493  
549 +
494 494  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:
495 495  
496 -* [[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"]]
497 497  
498 -* [[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
499 499  
500 -== 1.6 Example 6:CEM C31 485-T1-MID Energy Meter with RS485-LN ==
501 501  
557 +== 1.6 Example 6: CEM C31 485-T1-MID Energy Meter with RS485-LN ==
558 +
559 +
502 502  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:
503 503  
504 -* [[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);"]]
505 505  
506 -== 1.7 Example 7:Schneider Electric PLC M221 with RS485-BL ==
507 507  
565 +
566 +== 1.7 Example 7: Schneider Electric PLC M221 with RS485-BL ==
567 +
568 +
508 508  [[image:image-20220527094556-31.png]]
509 509  
510 510  Network Structure
511 511  
573 +
512 512  * [[Reference Instruction>>url:https://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Schneider%20Electric%20PLC/]]
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