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Changes for page 07 Communication

Last modified by Devin Chen on 2024/08/19 14:28
From version 3.1
edited by Stone Wu
on 2022/07/12 15:02
Change comment: There is no comment for this version
To version 19.1
edited by Devin Chen
on 2024/08/19 14:28
Change comment: There is no comment for this version

Summary

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Parent
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1 -PLC Editor.1 User Manual.WebHome
1 +PLC Editor.WebHome
Author
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1 -XWiki.Stone
1 +XWiki.DevinChen
Content
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1 -= **1 PLC COM2 Modbus RTU** =
1 += **PLC COM2 Modbus RTU** =
2 2  
3 -== **1.1 Protocol Setting (D8126)** ==
3 +== **Protocol Setting (D8126)** ==
4 4  
5 5  |=(% scope="row" %)**Protocol**|=**Description**|=**Value of D8126**
6 6  |=WECON PLC Protocol|Using WECON PLC Protocol|01H
7 7  |=MODBUS RTU Master|PLC is slave device|02H
8 8  |=MODBUS ASCII Master|PLC is slave device|03H
9 +|=User-defined Protocol|Using User-defined Protocol|10H
9 9  |=MODBUS RTU Slave|PLC is master device|20H
10 10  |=MODBUS ASCII Slave|PLC is master device|30H
11 11  
12 -== **1.2 Communication Format (D8120)** ==
13 +== **Communication format (D8120)** ==
13 13  
14 14  (% border="1" %)
15 15  |(% rowspan="2" %)**Item**|(% rowspan="2" %)**parameter**|(% colspan="8" %)**Bit value of D8120**
... ... @@ -38,11 +38,14 @@
38 38  |Even|-|-|-|-|-|1|1|-
39 39  |(% rowspan="2" %)Data bit|7 bit|-|-|-|-|-|-|-|0
40 40  |8 bit|-|-|-|-|-|-|-|1
41 -|(% colspan="10" %)Example: the communication format is 9600.1.8.None, b7b6b5b4=1000, b3=0, b2b1=00, b 0=1. D8120=81H ( (10000001),,2,,=81H, 81H means [[hexadecimal>>path:C:/Users/Administrator/AppData/Local/Yodao/DeskDict/frame/20140818134937/javascript:void(0);]] [[number>>path:C:/Users/Administrator/AppData/Local/Yodao/DeskDict/frame/20140818134937/javascript:void(0);]])
42 +|(% colspan="10" %)Example: the communication format is 9600.1.8.None, b7b6b5b4=1000, b3=0, b2b1=00, b 0=1. D8120=81H ( (10000001),,2,,=81H, 81H means hexadecimal number)
42 42  
44 +(% class="box infomessage" %)
45 +(((
43 43  **✎Note:** If use Data bit=7.Parity can not choose None.
47 +)))
44 44  
45 -== **1.3 WECON PLC - MODBUS (Slave) addresses rules** ==
49 +== **WECON PLC - MODBUS (Slave) addresses rules** ==
46 46  
47 47  (% border="1" %)
48 48  |(% colspan="3" %)** PLC Bit Address**
... ... @@ -53,9 +53,9 @@
53 53  |S0 ~~ S999|0xE000 ~~ 0xE3E7|57344 ~~ 58343
54 54  |T0 ~~ T256|0xF000 ~~ 0xF100|61440 ~~ 61696
55 55  |C0 ~~ C255|0xF400 ~~ 0xF4FF|62464 ~~ 62719
56 -|X0 ~~ X255|0xF800 ~~ 0xF9FE|63488 ~~ 63998
57 -|Y0 ~~ Y255|0xFC00 ~~ 0xFDFE|64512 ~~ 65022
58 -|(% colspan="3" %)** PLC Word Address**
60 +|X0 ~~ X377|0xF800 ~~ 0xF8FF|63488 ~~ 63743
61 +|Y0 ~~ Y377|0xFC00 ~~ 0xFCFF|64512 ~~ 64767
62 +|(% colspan="3" %)** PLC Word Address**
59 59  |(% rowspan="2" %)PLC Address|(% colspan="2" %)MODBUS Address
60 60  |Hex|Decimal
61 61  |D0 ~~ D8255|0 ~~ 0x203F|0 ~~ 8255
... ... @@ -63,9 +63,9 @@
63 63  |C0 ~~ C199|0xF400 ~~ 0xF4C7|62464 ~~ 62663
64 64  |C200 ~~ C255|0xF700 ~~ 0xF7FF|63232 ~~ 63487
65 65  
66 -== **1.4 MODBUS Function Code Introduction** ==
70 +== **MODBUS function code introduction** ==
67 67  
68 -**(1) Function code 0x01(01): read coil (bit address)**
72 +**Function code 0x01(01): read coil (bit address)**
69 69  
70 70  Frame format: Station number of slave&0x01 + start address + number of coils + CRC
71 71  
... ... @@ -77,7 +77,7 @@
77 77  |4|(% style="width:352px" %)Number of coils|(% style="width:252px" %)2 bytes|
78 78  |5|(% style="width:352px" %)CRC|(% style="width:252px" %)2 bytes|
79 79  
80 -**(2) Function code 0x03(03): read register (word address)**
84 +**Function code 0x03(03): read register (word address)**
81 81  
82 82  Frame format: Station number of slave&0x03 + start address+ number of registers + CRC
83 83  
... ... @@ -89,7 +89,7 @@
89 89  |4|Number of registers|2 bytes|
90 90  |5|CRC|2 bytes|
91 91  
92 -**(3) Function code 0x05(05): write single coil**
96 +**Function code 0x05(05): write single coil**
93 93  
94 94  Frame format: Station number of slave&0x05 + address + state of coil + CRC
95 95  
... ... @@ -101,7 +101,7 @@
101 101  |4|State of coil|2 bytes|
102 102  |5|CRC|2 bytes|
103 103  
104 -**(4) Function code 0x06 (06): Write single register**
108 +**Function code 0x06 (06): Write single register**
105 105  
106 106  Frame format: Station number of slave&0x06 + address + value + CRC
107 107  
... ... @@ -113,7 +113,7 @@
113 113  |4|Value of register|2 bytes|
114 114  |5|CRC|2 bytes|
115 115  
116 -**(5) Function code 0x0f(15): Write continuous coils**
120 +**Function code 0x0f(15): Write continuous coils**
117 117  
118 118  Frame format: Station number of slave&0x0f + start address + number of coils + length + state of coil + CRC
119 119  
... ... @@ -127,7 +127,7 @@
127 127  |6|State of coils|[(N+7)/8] bytes|
128 128  |7|CRC|2 bytes|
129 129  
130 -**(6) Function code 0x10 (10): Write continuous registers**
134 +**Function code 0x10 (10): Write continuous registers**
131 131  
132 132  Frame format: Station number of slave&0x10 + start address + number of registers + length + value of register + CRC
133 133  
... ... @@ -141,66 +141,63 @@
141 141  |6|Value of register|N*2 bytes|
142 142  |7|CRC|2 bytes|
143 143  
144 -== **1.5 Example** ==
148 +== **Example** ==
145 145  
146 -**(1) Read bit address from device**
150 +**Read bit address from device**
147 147  
148 -**(When reading the bit address, the return value of 256 means that the coil is turned ON, and the return value of 0 means that the coil is turned OFF.)**
152 +(When reading the bit address, a return value of 256 indicates that the coil is in the ON state, while a return value of 0 indicates that the coil is in the OFF state.)
149 149  
150 150  (% style="text-align:center" %)
151 -[[image:1641781999957-637.png||class="img-thumbnail" height="390" width="750"]]
155 +[[image:1641781999957-637.png||height="390" width="750" class="img-thumbnail"]]
152 152  
153 -**(2) Read word address from device**
157 +**Read word address from device**
154 154  
155 155  (% style="text-align:center" %)
156 -[[image:1641782024282-424.png||class="img-thumbnail" height="439" width="750"]]
160 +[[image:1641782024282-424.png||height="439" width="750" class="img-thumbnail"]]
157 157  
158 -**(3) Write single coil**
162 +**Write single coil**
159 159  
160 160  (% style="text-align:center" %)
161 -[[image:1641782057319-761.png||class="img-thumbnail" height="440" width="750"]]
165 +[[image:1641782057319-761.png||height="440" width="750" class="img-thumbnail"]]
162 162  
163 -**Tip:**
167 +Tip: (When writing a single coil or a continuous coil, write HFF00 to turn the coil on, and write H0000 to turn off the coil.)
164 164  
165 -**(When writing a single coil or a continuous coil, write HFF00 to turn the coil on, and write H0000 to turn off the coil.)**
169 +**Write single register**
166 166  
167 -**(4) Write single register**
168 -
169 169  (% style="text-align:center" %)
170 -[[image:1641782078927-432.png||class="img-thumbnail" height="442" width="750"]]
172 +[[image:1641782078927-432.png||height="442" width="750" class="img-thumbnail"]]
171 171  
172 -**(5) Write continuous coils**
174 +**Write continuous coils**
173 173  
174 174  (% style="text-align:center" %)
175 -[[image:1641782101687-540.png||class="img-thumbnail" height="452" width="750"]]
177 +[[image:1641782101687-540.png||height="452" width="750" class="img-thumbnail"]]
176 176  
177 -**(6) Write continuous registers**
179 +**Write continuous registers**
178 178  
179 179  (% style="text-align:center" %)
180 -[[image:1641782118748-978.png||class="img-thumbnail" height="448" width="750"]]
182 +[[image:1641782118748-978.png||height="448" width="750" class="img-thumbnail"]]
181 181  
184 +**PLC is slave devic**
182 182  
183 -**(7) PLC is slave devic**
184 -
185 185  [[image:1641782203514-616.png||height="230" width="746"]]
186 186  
187 187  
188 -**(8) WECON PLC Protocol (COM2)**
189 +**WECON PLC Protocol (COM2)**
189 189  
190 190  [[image:1641782240401-942.png||height="161" width="754"]]
191 191  
192 -= (% style="color:inherit; font-family:inherit" %)**2 N:N network**(%%) =
193 += (% style="color:inherit; font-family:inherit" %)**N:N network**(%%) =
193 193  
194 194  **LX3VP COM2 N:N Application**
195 195  
196 -== **2.1 LX3VP COM2 N:N Connection** ==
197 +== **LX3VP COM2 N:N Connection** ==
197 197  
198 -PLC built-in N:N connection protocol provides a effective way to exchange data among multiple PLC (Max. 8 devices). Technically, it only requires the twisted pair RS485 cable to connect with each PLC COM2 (in parallel).
199 +PLC built-in N:N connection protocol provides an effective way to exchange data among multiple PLC (Max. 8 devices). Technically, it only requires the twisted pair RS485 cable to connect with each PLC COM2 (in parallel).
199 199  
200 200  (% style="text-align:center" %)
201 -[[image:9.Communication example_html_8c43baa1ae891689.jpg||class="img-thumbnail" height="142" width="500"]]
202 +[[image:9.Communication example_html_8c43baa1ae891689.jpg||height="142" width="500" class="img-thumbnail"]]
202 202  
203 -=== **2.1.1 COM2 N:N Instructions  ** ===
204 +== **COM2 N:N Instructions  ** ==
204 204  
205 205  User should put data to specified register unit. Exchanging the data among PLCs, This function only requires putting data in preset register block, all the data in this register block would share with other PLCs. There are five modes for choice, according to data volume and communication speed. See the preset register block from table below.
206 206  
... ... @@ -231,12 +231,12 @@
231 231  Communication between each PLC (up to 8 PLC), please see the connection construction below (For 3 PLC interconnection).
232 232  
233 233  (% style="text-align:center" %)
234 -[[image:9.Communication example_html_b805bca9e1166337.jpg||class="img-thumbnail" height="93" width="600"]]
235 +[[image:9.Communication example_html_b805bca9e1166337.jpg||height="93" width="600" class="img-thumbnail"]]
235 235  
236 -=== **2.1.2 The special devices in N: N network** ===
237 +== **Special devices in N: N network** ==
237 237  
238 238  (% border="1" %)
239 -|**Register**|**Description**
240 +|=**Register**|=**Description**
240 240  |D8120|Communication format settings
241 241  |D8126|COM2 communication protocol settings, 40h means N:N Master Device, 04h means N:N Slave device
242 242  |D8176|Station number, from 0 to 7, 0 means master device
... ... @@ -262,10 +262,10 @@
262 262  )))
263 263  |M8191|Processing sending data
264 264  
265 -=== **2.1.3 Communications format:** ===
266 +== **Communications format** ==
266 266  
267 267  (% border="1" %)
268 -|**Item**|(% style="width:115px" %)**Parameters**|(% style="width:239px" %)**b15(RS2)**|**b14-b8**|**b7**|**b6**|**b5**|**b4**|**b3**|**b2**|**b1**|**b0**
269 +|=**Item**|=(% style="width: 115px;" %)**Parameters**|=(% style="width: 239px;" %)**b15(RS2)**|=**b14-b8**|=**b7**|=**b6**|=**b5**|=**b4**|=**b3**|=**b2**|=**b1**|=**b0**
269 269  |(% rowspan="2" %)**Bit mode**|(% style="width:115px" %)8 bit|(% style="width:239px" %)0|(% rowspan="15" %)Retention|-|-|-|-|-|-|-|-
270 270  |(% style="width:115px" %)16-bit|(% style="width:239px" %)1|-|-|-|-|-|-|-|-
271 271  |(% rowspan="6" %)**Baud rate (Bps)**|(% style="width:115px" %)115200|(% style="width:239px" %)-|1|1|0|0|-|-|-|-
... ... @@ -282,26 +282,43 @@
282 282  |(% rowspan="2" %)**Data bit**|(% style="width:115px" %)7 bit|(% style="width:239px" %)-|-|-|-|-|-|-|-|0
283 283  |(% style="width:115px" %)8 bit|(% style="width:239px" %)-|-|-|-|-|-|-|-|1
284 284  
285 -=== **2.1.4 Program example** ===
286 +== **Communication error code (D8211~~D8218)** ==
286 286  
288 +|=(% style="width: 195px;" %)**Error code**|=(% style="width: 881px;" %)**Description**
289 +|(% style="width:195px" %)1|(% style="width:881px" %)The monitoring period has elapsed, and the slave station has not responded to requests from the master station yet.
290 +|(% style="width:195px" %)2|(% style="width:881px" %)The other slave stations have responded to requests sent by the master station.
291 +|(% style="width:195px" %)3|(% style="width:881px" %)The count values in the parameter data do not match those responded by the slave stations.
292 +|(% style="width:195px" %)4|(% style="width:881px" %)The response messages from the slave stations are incorrect.
293 +|(% style="width:195px" %)17|(% style="width:881px" %)The monitoring period has elapsed,the master station has not sent a request to the next slave station yet.
294 +|(% style="width:195px" %)20|(% style="width:881px" %)The messages from the master station are incorrect.
295 +|(% style="width:195px" %)33|(% style="width:881px" %)The slave station is unresponsive.
296 +|(% style="width:195px" %)34|(% style="width:881px" %)The other slave stations have responded to requests sent by the master station.
297 +|(% style="width:195px" %)35|(% style="width:881px" %)The count values in the parameter data do not match those responded by the slave stations.
298 +|(% style="width:195px" %)49|(% style="width:881px" %)The slave station received requests from the master station before receiving the parameters.
299 +
300 +== **Program example** ==
301 +
287 287  LX3VP COM2 port communication parameters: 9600, 1, 8, NONE. Register block mode: 3
288 288  
289 289  **PLC as master**
290 290  
291 291  (% style="text-align:center" %)
292 -[[image:9.Communication example_html_a3fdef81ab69639.jpg||class="img-thumbnail" height="448" width="750"]]
307 +[[image:9.Communication example_html_a3fdef81ab69639.jpg||height="448" width="750" class="img-thumbnail"]]
293 293  
294 -PLC as slave
309 +**PLC as slave**
295 295  
296 296  (% style="text-align:center" %)
297 -[[image:9.Communication example_html_cc8af72b56d9c539.jpg||class="img-thumbnail" height="236" width="750"]]
312 +[[image:9.Communication example_html_cc8af72b56d9c539.jpg||height="236" width="750" class="img-thumbnail"]]
298 298  
299 -**Note for use**
314 +(% class="box infomessage" %)
315 +(((
316 +✎**Note:**
300 300  
301 301  * There are two modes of N:N protocol configuration. one is LX3VP built-in N:N protocol, the other one is LX3V N:N protocol (LX3V-2RS485-BD required).
302 302  * In LX3VP series PLC, only one kind of N:N configuration available. Second mode would be disabled when LX3VP built-in N:N protocol configured.
320 +)))
303 303  
304 -== (% style="color:inherit; font-family:inherit" %)**3 RS485-BD and ETH-BD communiaction**(%%) ==
322 += (% style="color:inherit; font-family:inherit" %)**RS485-BD and ETH-BD communiaction**(%%) =
305 305  
306 306  Please kindly check the link as below.
307 307