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<
From version < 1.3 >
edited by Xiaoling
on 2022/05/12 09:50
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Summary

Details

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Content
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1 +(% class="wikigeneratedid" %)
2 + **Contents:**
3 +
4 +{{toc/}}
5 +
6 +
7 +
8 +
9 +
10 +
1 1  = 1. Introduction =
2 2  
3 3  This article provide the examples for RS485-LN to connect to different type of RS485 sensors.
4 4  
15 +
5 5  == 1.1 Example 1: Connect to Leak relay and VFD ==
6 6  
7 7  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:
8 8  
9 -[[image:https://wiki.dragino.com/images/thumb/5/5c/RS485_01.png/600px-RS485_01.png||height="297" width="534"]]
20 +[[image:image-20220527091852-1.png]]
10 10  
11 11  Connection
12 12  
13 -[[image:https://wiki.dragino.com/images/thumb/f/f2/RS485_02.png/600px-RS485_02.png||height="743" width="528"]](% style="display:none" %)
14 14  
25 +
26 +[[image:image-20220527091942-2.png]](% style="display:none" %)
27 +
15 15  Connection
16 16  
30 +
17 17  Related documents:
18 18  
19 19  * [[Solar Pump with Dragino>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/Relay_VFD/]] : System Structure
... ... @@ -20,65 +20,86 @@
20 20  * [[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.
21 21  * [[Video Demo>>url:https://www.youtube.com/watch?v=TAFZ5eaf-MY&t=6s&ab_channel=XavierFlorensaBerenguer]]
22 22  
23 -
24 24  == 1.2 Example 2: Connect to Pulse Counter ==
25 25  
26 26  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:
27 27  
28 -[[image:https://wiki.dragino.com/images/thumb/3/34/RS485_02_1.png/600px-RS485_02_1.png||height="364" width="600"]]
41 +[[image:image-20220527092058-3.png]]
29 29  
30 30  Connection
31 31  
32 -[[image:https://wiki.dragino.com/images/thumb/5/5f/RS485_02_2.png/600px-RS485_02_2.png||height="337" width="600"]]
33 33  
46 +[[image:image-20220527092146-4.png]]
47 +
34 34  Connection
35 35  
36 36  * [[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
37 37  * [[Dragino Solution in Farm>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/Application_Note/&file=Dragino%20on%20Farms.pptx]]
38 38  
53 +== ==
39 39  
40 40  == 1.3 Example3: Use RS485-LN with energy meters ==
41 41  
42 42  === 1.3.1 OverView ===
43 43  
44 -Note：The specifications of each energy meter are different, please refer to your own energy meter specifications.
59 +(((
60 +**Note**：The specifications of each energy meter are different, please refer to your own energy meter specifications.
61 +)))
45 45  
63 +(((
46 46  This example describes a single-phase meter.This is the connection between the RS485-LN and the energy meter.
65 +)))
47 47  
48 -[[image:https://wiki.dragino.com/images/thumb/f/f4/Meter1.jpg/600px-Meter1.jpg||height="800" width="600"]]
67 +[[image:image-20220527092419-5.png]]
49 49  
50 50  Connection1
51 51  
71 +
72 +(((
52 52  How to connect with Energy Meter：
74 +)))
53 53  
76 +(((
54 54  Follow the instructions of the electric energy meter to connect the phase line and the neutral line, and then connect 485A+ and 485B- to RS485A and RA485B of RS485-LN respectively.
78 +)))
55 55  
80 +(((
56 56  The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
82 +)))
57 57  
84 +(((
58 58  Power Source VIN to RS485-LN VIN+
86 +)))
59 59  
88 +(((
60 60  Power Source GND to RS485-LN VIN-
90 +)))
61 61  
92 +(((
62 62  Once there is power, the RS485-LN will be on.
94 +)))
63 63  
64 -[[image:https://wiki.dragino.com/images/thumb/1/15/Meter2.jpg/600px-Meter2.jpg||height="450" width="600"]]
96 +[[image:image-20220527092514-6.png]]
65 65  
66 66  Connection2
67 67  
68 -[[image:https://wiki.dragino.com/images/thumb/a/a5/Meter3.jpg/600px-Meter3.jpg||height="800" width="600"]]
69 69  
101 +[[image:image-20220527092555-7.png]]
102 +
70 70  Connection3
71 71  
72 72  
73 73  === 1.3.2 How to use the parameters of the energy meter and MODBUS commands ===
74 74  
75 -If the user needs to read the parameters of the electric energy meter and use the modbus command,
108 +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.
76 76  
77 -please refer to the appendix of the MODBUS communication protocol in the user manual of the energy meter.
110 +[[image:image-20220527092629-8.png]]
78 78  
79 -[[image:https://wiki.dragino.com/images/thumb/3/35/Meter4.png/600px-Meter4.png||alt="Meter4.png" height="193" width="600"]]
80 80  
81 -Example:AT+COMMAND1=01 03 00 00 00 01 84 0A
113 +(% class="box infomessage" %)
114 +(((
115 +**Example:** AT+COMMAND1=01 03 00 00 00 01 84 0A
116 +)))
82 82  
83 83  * The first byte : slave address code (=001～247)
84 84  * The second byte : read register value function code
... ... @@ -86,9 +86,14 @@
86 86  * 5th and 6th bytes: Number of registers to read
87 87  * 7th and 8th bytes: CRC16 checksum from bytes 1 to 6.
88 88  
124 +(((
89 89  How to parse the reading of the return command of the parameter：
126 +)))
90 90  
91 -Example:RETURN1：01 03 02 08 FD 7E 05
128 +(% class="box infomessage" %)
129 +(((
130 +**Example:** RETURN1：01 03 02 08 FD 7E 05
131 +)))
92 92  
93 93  * The first byte ARD: slave address code (=001～254)
94 94  * The second byte: Return to read function code
... ... @@ -97,23 +97,34 @@
97 97  * The 6th and 7th bytes: CRC16 checksum
98 98  * 08 FD is register data. Use short integer 16 bits to convert to decimal, get 2301, then 230.1V is the voltage.
99 99  
140 +(% class="wikigeneratedid" %)
141 +(((
142 +
143 +)))
100 100  
101 -=== 1.3.3 How to configure RS485-LN and parse output commands ===
145 +=== **1.3.3 How to configure RS485-LN and parse output commands** ===
102 102  
103 103  RS485-LN provides two configuration methods: AT COMMAND and DOWNLINK.
104 104  
105 -==== via AT COMMAND: ====
106 106  
107 -First, we can use AT+CFGDEV to get the return value, and we can also judge whether the input parameters are correct.
150 +==== **1.3.3.1 via AT COMMAND:** ====
108 108  
152 +First, we can use **AT+CFGDEV** to get the return value, and we can also judge whether the input parameters are correct.
153 +
154 +(((
109 109  If the configured parameters and commands are incorrect, the return value is not obtained.
156 +)))
110 110  
111 -[[image:https://wiki.dragino.com/images/b/bc/AT_COMMAND1.png||height="358" width="456"]]
158 +[[image:image-20220527092748-9.png]]
112 112  
113 113  AT COMMAND
114 114  
115 -AT+DATACUTx : This command defines how to handle the return from AT+COMMANDx, max reture length is 40 bytes. AT+DATACUTx=a,b,c
116 116  
163 +(% class="box infomessage" %)
164 +(((
165 + AT+DATACUTx : This command defines how to handle the return from AT+COMMANDx, max reture length is 40 bytes. AT+DATACUTx=a,b,c
166 +)))
167 +
117 117  a: length for the return of AT+COMMAND
118 118  
119 119  b:1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.
... ... @@ -120,159 +120,273 @@
120 120  
121 121  c: define the position for valid value.
122 122  
123 -[[image:https://wiki.dragino.com/images/7/7d/AT_COMMAND2.png||height="278" width="477"]]
174 +[[image:image-20220527092936-10.png]]
124 124  
125 125  AT COMMAND
126 126  
178 +
127 127  PAYLOAD is available after the valid value is intercepted.
128 128  
129 -[[image:https://wiki.dragino.com/images/3/3a/AT_COMMAND4.png||height="219" width="576"]]
130 130  
182 +[[image:image-20220527093059-11.png]]
183 +
131 131  AT COMMAND
132 132  
186 +
133 133  You can get configured PAYLOAD on TTN.
134 134  
135 -[[image:https://wiki.dragino.com/images/thumb/c/c2/AT_COMMAND3.png/600px-AT_COMMAND3.png||height="138" width="600"]]
189 +[[image:image-20220527093133-12.png]]
136 136  
191 +(((
137 137  AT COMMAND
193 +)))
138 138  
139 -Example: CMD1:Read current data with MODBUS command. address:0x03 AT+COMMAND1= 01 03 00 03 00 01,1
195 +(((
196 +
197 +)))
140 140  
199 +(((
200 +(% style="color:#4f81bd" %)**Example**:
201 +
202 +CMD1:Read current data with MODBUS command. address:0x03 AT+COMMAND1= 01 03 00 03 00 01,1
203 +)))
204 +
205 +(((
141 141  RETURN1:01 03 02 00 02 39 85 00 00(return data)
207 +)))
142 142  
209 +(((
143 143  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.
144 144  
212 +
213 +)))
214 +
215 +(((
145 145  CMD2:Read voltage data with MODBUS command. address:0x00 AT+COMMAND2= 01 03 00 00 00 01,1
217 +)))
146 146  
219 +(((
147 147  RETURN2:01 03 02 08 DC BE 1D(return data)
221 +)))
148 148  
223 +(((
149 149  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.
150 150  
226 +
227 +)))
228 +
229 +(((
151 151  CMD3:Read total active energy data with MODBUS command. address:0x0031 AT+COMMAND3= 01 03 00 31 00 02,1
231 +)))
152 152  
233 +(((
153 153  RETURN3:01 03 04 00 00 00 44 FA 00(return data)
235 +)))
154 154  
237 +(((
155 155  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.
239 +)))
156 156  
241 +(((
157 157  Payload:01 00 02 39 85 08 DC 00 00 00 44
243 +)))
158 158  
159 -[[image:https://wiki.dragino.com/images/thumb/9/9b/AT_COMMAND10.png/600px-AT_COMMAND10.png||height="278" width="600"]]
245 +[[image:image-20220527093204-13.png]]
160 160  
161 161  AT COMMAND
162 162  
163 -01 is device address,00 02 is the current, 08 DC is the voltage,00 00 00 44 is the total active energy.
164 164  
165 -[[~[~[image:https://wiki.dragino.com/images/thumb/b/b8/AT_COMMAND11.png/600px-AT_COMMAND11.png~|~|height="271" width="600"~]~]>>url:https://wiki.dragino.com/index.php/File:AT_COMMAND11.png]]
250 +(% 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.**
166 166  
252 +[[image:image-20220527093251-14.png]]
253 +
167 167  AT COMMAND
168 168  
169 -==== 1.3.3.1 via LoRaWAN DOWNLINK ====
170 170  
171 -[[image:https://wiki.dragino.com/images/thumb/f/fc/DOWNLINK_METER1.png/600px-DOWNLINK_METER1.png||height="423" width="600"]]
257 +==== **1.3.3.2 via LoRaWAN DOWNLINK** ====
172 172  
259 +[[image:image-20220527093358-15.png]]
260 +
261 +(((
173 173  DOWNLINK
263 +)))
174 174  
175 -Type Code 0xAF
265 +(((
266 +
267 +)))
176 176  
269 +(((
270 +(% style="color:#4f81bd" %)**Type Code 0xAF**
271 +)))
272 +
273 +(((
274 +(% class="box infomessage" %)
275 +(((
177 177  0xAF downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
277 +)))
278 +)))
178 178  
280 +(((
179 179  Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
282 +)))
180 180  
284 +(((
181 181  Format: AF MM NN LL XX XX XX XX YY
286 +)))
182 182  
288 +(((
183 183  Where:
290 +)))
184 184  
292 +(((
185 185  MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
294 +)))
186 186  
296 +(((
187 187  NN: 0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
298 +)))
188 188  
300 +(((
189 189  LL: The length of AT+COMMAND or AT+DATACUT command
302 +)))
190 190  
304 +(((
191 191  XX XX XX XX: AT+COMMAND or AT+DATACUT command
306 +)))
192 192  
308 +(((
193 193  YY: If YY=0, RS485-LN will execute the downlink command without uplink; if YY=1, RS485-LN
310 +)))
194 194  
312 +(((
195 195  will execute an uplink after got this command.
314 +)))
196 196  
197 -Example:
316 +(((
317 +(% style="color:#4f81bd" %)**Example:**
318 +)))
198 198  
199 -AF 03 01 06 0A 05 00 04 00 01 00: Same as AT+COMMAND3=0A 05 00 04 00 01,1
320 +(((
321 +**AF 03 01 06 0A 05 00 04 00 01 00**: Same as AT+COMMAND3=0A 05 00 04 00 01,1
322 +)))
200 200  
201 -[[image:https://wiki.dragino.com/images/thumb/4/45/DOWNLINK_METER2.png/600px-DOWNLINK_METER2.png||height="208" width="600"]]
324 +[[image:image-20220527093430-16.png]]
202 202  
203 203  DOWNLINK
204 204  
205 -[[~[~[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]]
206 206  
329 +[[image:image-20220527093508-17.png]]
330 +
207 207  DOWNLINK
208 208  
209 -[[image:https://wiki.dragino.com/images/thumb/2/27/DOWNLINK_METER4.png/600px-DOWNLINK_METER4.png||height="210" width="600"]]
210 210  
334 +[[image:image-20220527093530-18.png]]
335 +
211 211  DOWNLINK
212 212  
213 -[[~[~[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]]
214 214  
339 +[[image:image-20220527093607-19.png]]
340 +
215 215  DOWNLINK
216 216  
217 -[[image:https://wiki.dragino.com/images/thumb/a/a2/DOWNLINK_METER6.png/600px-DOWNLINK_METER6.png||height="365" width="600"]]
218 218  
344 +[[image:image-20220527093628-20.png]]
345 +
219 219  DOWNLINK
220 220  
221 221  
222 -=== 1.3.4 How to configure and output commands for RS485 to USB ===
349 +=== **1.3.4 How to configure and output commands for RS485 to USB** ===
223 223  
351 +(((
224 224  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.
353 +)))
225 225  
355 +(((
226 226  First, connect the A+ and A- of the USB to the 485 A and 485 B of the energy meter.
357 +)))
227 227  
359 +(((
228 228  Open the serial port debugging, set the send and receive to HEX.
361 +)))
229 229  
363 +(((
230 230  Baud rate: 9600
365 +)))
231 231  
367 +(((
232 232  check digit: Even
369 +)))
233 233  
234 -[[image:https://wiki.dragino.com/images/thumb/8/8f/Usb_meter2.jpg/600px-Usb_meter2.jpg||height="800" width="600"]]
371 +[[image:image-20220527093708-21.png]]
235 235  
236 236  USB
237 237  
238 -[[image:https://wiki.dragino.com/images/thumb/6/62/Usb_meter1.jpg/600px-Usb_meter1.jpg||height="800" width="600"]]
239 239  
376 +[[image:image-20220527093747-22.png]]
377 +
240 240  USB
241 241  
380 +
381 +(((
242 242  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.
383 +)))
243 243  
244 -Example:input：01 03 00 31 00 02 95 c4
385 +(((
386 +(% style="color:#4f81bd" %)**Example:**  (%%)input：01 03 00 31 00 02 95 c4
387 +)))
245 245  
246 -{{{ output:01 03 04 00 00 00 42 7A 02
247 -}}}
389 +(((
390 + output：01 03 04 00 00 00 42 7A 02
391 +)))
248 248  
249 -[[image:https://wiki.dragino.com/images/thumb/b/b3/Usb_meter3.jpg/600px-Usb_meter3.jpg||height="466" width="600"]]
393 +[[image:image-20220527093821-23.png]]
250 250  
251 251  USB
252 252  
253 -=== 1.3.5 How to configure multiple devices and modify device addresses ===
254 254  
398 +=== **1.3.5 How to configure multiple devices and modify device addresses** ===
399 +
255 255  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.
256 256  
402 +(((
403 +(((
257 257  Set the device address according to the parameters in the appendix of the MODBUS communication protocol.
405 +)))
406 +)))
258 258  
259 -[[image:https://wiki.dragino.com/images/thumb/1/1f/Double_meter3.png/600px-Double_meter3.png||alt="Double meter3.png" height="83" width="600"]]
408 +[[image:image-20220527093849-24.png]]
260 260  
261 -Example:These two meters are examples of setting parameters and device addresses.
262 262  
263 -[[image:https://wiki.dragino.com/images/thumb/e/ee/Double_meter1.jpg/600px-Double_meter1.jpg||alt="Double meter1.jpg" height="800" width="600"]]
411 +**Example**:These two meters are examples of setting parameters and device addresses.
264 264  
265 -[[image:https://wiki.dragino.com/images/thumb/7/72/Double_meter2.jpg/600px-Double_meter2.jpg||alt="Double meter2.jpg" height="800" width="600"]]
413 +[[image:image-20220527093950-25.png]]
266 266  
415 +[[image:image-20220527094028-26.png]]
416 +
417 +(((
418 +(((
267 267  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.
420 +)))
421 +)))
268 268  
423 +(((
424 +(((
269 269  We can use AT+CFGDEV to set the device address.
426 +)))
427 +)))
270 270  
429 +(((
430 +(((
271 271  We modify the device address 01 of the first energy meter to 02.
432 +)))
433 +)))
272 272  
273 -[[image:https://wiki.dragino.com/images/6/6b/Double_meter4.png||alt="Double meter4.png" height="141" width="456"]]
435 +[[image:image-20220527094100-27.png]]
274 274  
275 -AT+CFGDEV:01 10 00 61 00 01 02 00 02,1
437 +(% class="box infomessage" %)
438 +(((
439 +**AT+CFGDEV:01 10 00 61 00 01 02 00 02,1**
440 +)))
276 276  
277 277  * 01:device adaress
278 278  
... ... @@ -294,21 +294,23 @@
294 294  
295 295  Its default device address is 01, and the following are the parameters for configuring two energy meters.
296 296  
297 -[[image:https://wiki.dragino.com/images/1/13/Meter11.png||alt="Meter11.png" height="576" width="379"]]
462 +[[image:image-20220527094150-28.png]]
298 298  
299 -[[image:https://wiki.dragino.com/images/thumb/7/7e/Meter12.png/600px-Meter12.png||alt="Meter12.png" height="262" width="600"]]
300 300  
301 -PAYLOAD:01 08 DF 43 62
465 +[[image:image-20220527094224-29.png]]
302 302  
467 +**PAYLOAD:01 08 DF 43 62**
468 +
303 303  * 08 DF is the valid value of the meter with device address 02.
304 304  * 43 62 is the valid value of the meter with device address 01.
305 305  
306 306  
473 +
307 307  == 1.4 Example 4: Circuit Breaker Remote Open Close ==
308 308  
309 309  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:
310 310  
311 -[[image:https://wiki.dragino.com/images/thumb/f/fa/RS485_04_2.png/600px-RS485_04_2.png||height="336" width="600"]]
478 +[[image:image-20220527094330-30.png]]
312 312  
313 313  Connection
314 314  
... ... @@ -315,6 +315,7 @@
315 315  * [[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
316 316  
317 317  
485 +
318 318  == 1.5 Example 5: SEM Three Energy Meter with RS485-BL or RS485-LN ==
319 319  
320 320  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:
... ... @@ -324,6 +324,7 @@
324 324  * [[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
325 325  
326 326  
495 +
327 327  == 1.6 Example 6:CEM C31 485-T1-MID Energy Meter with RS485-LN ==
328 328  
329 329  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:
... ... @@ -330,10 +330,9 @@
330 330  
331 331  * [[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
332 332  
333 -
334 334  == 1.7 Example 7:Schneider Electric PLC M221 with RS485-BL ==
335 335  
336 -[[image:https://wiki.dragino.com/images/thumb/9/97/PLC_M221.png/600px-PLC_M221.png||height="353" width="600"]]
504 +[[image:image-20220527094556-31.png]]
337 337  
338 338  Network Structure
339 339  
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