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Changes for page 07 Communication

Last modified by Devin Chen on 2024/08/19 14:28
From version 15.1
edited by Devin Chen
on 2024/03/22 09:52
Change comment: There is no comment for this version
To version 1.1
edited by Leo Wei
on 2022/06/08 12:57
Change comment: Imported from XAR

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1 -PLC Editor.WebHome
1 +PLC Editor.1 User Manual.WebHome
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1 -XWiki.DevinChen
1 +XWiki.admin
Content
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1 -= **PLC COM2 Modbus RTU** =
1 += **1 PLC COM2 Modbus RTU** =
2 2  
3 -== **Protocol Setting (D8126)** ==
3 +== **1.1 Protocol Setting (D8126)** ==
4 4  
5 -|=(% scope="row" %)**Protocol**|=**Description**|=**Value of D8126**
6 -|=WECON PLC Protocol|Using WECON PLC Protocol|01H
7 -|=MODBUS RTU Master|PLC is slave device|02H
8 -|=MODBUS ASCII Master|PLC is slave device|03H
9 -|=User-defined Protocol|Using User-defined Protocol|10H
10 -|=MODBUS RTU Slave|PLC is master device|20H
11 -|=MODBUS ASCII Slave|PLC is master device|30H
5 +(% border="1" %)
6 +|**Protocol**|**Description**|**Value of D8126**
7 +|WECON PLC Protocol|Using WECON PLC Protocol|01H
8 +|MODBUS RTU Master|PLC is slave device|02H
9 +|MODBUS ASCII Master|PLC is slave device|03H
10 +|MODBUS RTU Slave|PLC is master device|20H
11 +|MODBUS ASCII Slave|PLC is master device|30H
12 12  
13 -== **Communication format (D8120)** ==
13 +== **1.2 Communication Format (D8120)** ==
14 14  
15 15  (% border="1" %)
16 16  |(% rowspan="2" %)**Item**|(% rowspan="2" %)**parameter**|(% colspan="8" %)**Bit value of D8120**
... ... @@ -39,14 +39,11 @@
39 39  |Even|-|-|-|-|-|1|1|-
40 40  |(% rowspan="2" %)Data bit|7 bit|-|-|-|-|-|-|-|0
41 41  |8 bit|-|-|-|-|-|-|-|1
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 +|(% 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);]])
43 43  
44 -(% class="box infomessage" %)
45 -(((
46 46  **✎Note:** If use Data bit=7.Parity can not choose None.
47 -)))
48 48  
49 -== **WECON PLC - MODBUS (Slave) addresses rules** ==
46 +== **1.3 WECON PLC - MODBUS (Slave) addresses rules** ==
50 50  
51 51  (% border="1" %)
52 52  |(% colspan="3" %)** PLC Bit Address**
... ... @@ -57,9 +57,9 @@
57 57  |S0 ~~ S999|0xE000 ~~ 0xE3E7|57344 ~~ 58343
58 58  |T0 ~~ T256|0xF000 ~~ 0xF100|61440 ~~ 61696
59 59  |C0 ~~ C255|0xF400 ~~ 0xF4FF|62464 ~~ 62719
60 -|X0 ~~ X377|0xF800 ~~ 0xF8FF|63488 ~~ 63743
61 -|Y0 ~~ Y377|0xFC00 ~~ 0xFCFF|64512 ~~ 64767
62 -|(% colspan="3" %)** PLC Word Address**
57 +|X0 ~~ X255|0xF800 ~~ 0xF9FE|63488 ~~ 63998
58 +|Y0 ~~ Y255|0xFC00 ~~ 0xFDFE|64512 ~~ 65022
59 +|(% colspan="3" %)** PLC Word Address**
63 63  |(% rowspan="2" %)PLC Address|(% colspan="2" %)MODBUS Address
64 64  |Hex|Decimal
65 65  |D0 ~~ D8255|0 ~~ 0x203F|0 ~~ 8255
... ... @@ -67,9 +67,9 @@
67 67  |C0 ~~ C199|0xF400 ~~ 0xF4C7|62464 ~~ 62663
68 68  |C200 ~~ C255|0xF700 ~~ 0xF7FF|63232 ~~ 63487
69 69  
70 -== **MODBUS function code introduction** ==
67 +== **1.4 MODBUS Function Code Introduction** ==
71 71  
72 -**Function code 0x01(01): read coil (bit address)**
69 +**(1) Function code 0x01(01): read coil (bit address)**
73 73  
74 74  Frame format: Station number of slave&0x01 + start address + number of coils + CRC
75 75  
... ... @@ -81,7 +81,7 @@
81 81  |4|(% style="width:352px" %)Number of coils|(% style="width:252px" %)2 bytes|
82 82  |5|(% style="width:352px" %)CRC|(% style="width:252px" %)2 bytes|
83 83  
84 -**Function code 0x03(03): read register (word address)**
81 +**(2) Function code 0x03(03): read register (word address)**
85 85  
86 86  Frame format: Station number of slave&0x03 + start address+ number of registers + CRC
87 87  
... ... @@ -93,7 +93,7 @@
93 93  |4|Number of registers|2 bytes|
94 94  |5|CRC|2 bytes|
95 95  
96 -**Function code 0x05(05): write single coil**
93 +**(3) Function code 0x05(05): write single coil**
97 97  
98 98  Frame format: Station number of slave&0x05 + address + state of coil + CRC
99 99  
... ... @@ -105,7 +105,7 @@
105 105  |4|State of coil|2 bytes|
106 106  |5|CRC|2 bytes|
107 107  
108 -**Function code 0x06 (06): Write single register**
105 +**(4) Function code 0x06 (06): Write single register**
109 109  
110 110  Frame format: Station number of slave&0x06 + address + value + CRC
111 111  
... ... @@ -117,7 +117,7 @@
117 117  |4|Value of register|2 bytes|
118 118  |5|CRC|2 bytes|
119 119  
120 -**Function code 0x0f(15): Write continuous coils**
117 +**(5) Function code 0x0f(15): Write continuous coils**
121 121  
122 122  Frame format: Station number of slave&0x0f + start address + number of coils + length + state of coil + CRC
123 123  
... ... @@ -131,7 +131,7 @@
131 131  |6|State of coils|[(N+7)/8] bytes|
132 132  |7|CRC|2 bytes|
133 133  
134 -**Function code 0x10 (10): Write continuous registers**
131 +**(6) Function code 0x10 (10): Write continuous registers**
135 135  
136 136  Frame format: Station number of slave&0x10 + start address + number of registers + length + value of register + CRC
137 137  
... ... @@ -145,63 +145,66 @@
145 145  |6|Value of register|N*2 bytes|
146 146  |7|CRC|2 bytes|
147 147  
148 -== **Example** ==
145 +== **1.5 Example** ==
149 149  
150 -**Read bit address from device**
147 +**(1) Read bit address from device**
151 151  
152 -(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.)
149 +**(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.)**
153 153  
154 154  (% style="text-align:center" %)
155 -[[image:1641781999957-637.png||height="390" width="750" class="img-thumbnail"]]
152 +[[image:1641781999957-637.png||class="img-thumbnail" height="390" width="750"]]
156 156  
157 -**Read word address from device**
154 +**(2) Read word address from device**
158 158  
159 159  (% style="text-align:center" %)
160 -[[image:1641782024282-424.png||height="439" width="750" class="img-thumbnail"]]
157 +[[image:1641782024282-424.png||class="img-thumbnail" height="439" width="750"]]
161 161  
162 -**Write single coil**
159 +**(3) Write single coil**
163 163  
164 164  (% style="text-align:center" %)
165 -[[image:1641782057319-761.png||height="440" width="750" class="img-thumbnail"]]
162 +[[image:1641782057319-761.png||class="img-thumbnail" height="440" width="750"]]
166 166  
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 +**Tip:**
168 168  
169 -**Write single register**
166 +**(When writing a single coil or a continuous coil, write HFF00 to turn the coil on, and write H0000 to turn off the coil.)**
170 170  
168 +**(4) Write single register**
169 +
171 171  (% style="text-align:center" %)
172 -[[image:1641782078927-432.png||height="442" width="750" class="img-thumbnail"]]
171 +[[image:1641782078927-432.png||class="img-thumbnail" height="442" width="750"]]
173 173  
174 -**Write continuous coils**
173 +**(5) Write continuous coils**
175 175  
176 176  (% style="text-align:center" %)
177 -[[image:1641782101687-540.png||height="452" width="750" class="img-thumbnail"]]
176 +[[image:1641782101687-540.png||class="img-thumbnail" height="452" width="750"]]
178 178  
179 -**Write continuous registers**
178 +**(6) Write continuous registers**
180 180  
181 181  (% style="text-align:center" %)
182 -[[image:1641782118748-978.png||height="448" width="750" class="img-thumbnail"]]
181 +[[image:1641782118748-978.png||class="img-thumbnail" height="448" width="750"]]
183 183  
184 -**PLC is slave devic**
185 185  
184 +**(7) PLC is slave devic**
185 +
186 186  [[image:1641782203514-616.png||height="230" width="746"]]
187 187  
188 188  
189 -**WECON PLC Protocol (COM2)**
189 +**(8) WECON PLC Protocol (COM2)**
190 190  
191 191  [[image:1641782240401-942.png||height="161" width="754"]]
192 192  
193 -= (% style="color:inherit; font-family:inherit" %)**N:N network**(%%) =
193 += (% style="color:inherit; font-family:inherit" %)**2 N:N network**(%%) =
194 194  
195 195  **LX3VP COM2 N:N Application**
196 196  
197 -== **LX3VP COM2 N:N Connection** ==
197 +== **2.1 LX3VP COM2 N:N Connection** ==
198 198  
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 +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).
200 200  
201 201  (% style="text-align:center" %)
202 -[[image:9.Communication example_html_8c43baa1ae891689.jpg||height="142" width="500" class="img-thumbnail"]]
202 +[[image:9.Communication example_html_8c43baa1ae891689.jpg||class="img-thumbnail" height="142" width="500"]]
203 203  
204 -== **COM2 N:N Instructions  ** ==
204 +=== **2.1.1 COM2 N:N Instructions  ** ===
205 205  
206 206  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.
207 207  
... ... @@ -232,12 +232,12 @@
232 232  Communication between each PLC (up to 8 PLC), please see the connection construction below (For 3 PLC interconnection).
233 233  
234 234  (% style="text-align:center" %)
235 -[[image:9.Communication example_html_b805bca9e1166337.jpg||height="93" width="600" class="img-thumbnail"]]
235 +[[image:9.Communication example_html_b805bca9e1166337.jpg||class="img-thumbnail" height="93" width="600"]]
236 236  
237 -== **Special devices in N: N network** ==
237 +=== **2.1.2 The special devices in N: N network** ===
238 238  
239 239  (% border="1" %)
240 -|=**Register**|=**Description**
240 +|**Register**|**Description**
241 241  |D8120|Communication format settings
242 242  |D8126|COM2 communication protocol settings, 40h means N:N Master Device, 04h means N:N Slave device
243 243  |D8176|Station number, from 0 to 7, 0 means master device
... ... @@ -263,10 +263,10 @@
263 263  )))
264 264  |M8191|Processing sending data
265 265  
266 -== **Communications format** ==
266 +=== **2.1.3 Communications format:** ===
267 267  
268 268  (% border="1" %)
269 -|=**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**
270 270  |(% rowspan="2" %)**Bit mode**|(% style="width:115px" %)8 bit|(% style="width:239px" %)0|(% rowspan="15" %)Retention|-|-|-|-|-|-|-|-
271 271  |(% style="width:115px" %)16-bit|(% style="width:239px" %)1|-|-|-|-|-|-|-|-
272 272  |(% rowspan="6" %)**Baud rate (Bps)**|(% style="width:115px" %)115200|(% style="width:239px" %)-|1|1|0|0|-|-|-|-
... ... @@ -283,49 +283,32 @@
283 283  |(% rowspan="2" %)**Data bit**|(% style="width:115px" %)7 bit|(% style="width:239px" %)-|-|-|-|-|-|-|-|0
284 284  |(% style="width:115px" %)8 bit|(% style="width:239px" %)-|-|-|-|-|-|-|-|1
285 285  
286 -== **Communication error code (D8211~~D8218)** ==
286 +=== **2.1.4 Program example** ===
287 287  
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 respond 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 -
302 302  LX3VP COM2 port communication parameters: 9600, 1, 8, NONE. Register block mode: 3
303 303  
304 304  **PLC as master**
305 305  
306 306  (% style="text-align:center" %)
307 -[[image:9.Communication example_html_a3fdef81ab69639.jpg||height="448" width="750" class="img-thumbnail"]]
293 +[[image:9.Communication example_html_a3fdef81ab69639.jpg||class="img-thumbnail" height="448" width="750"]]
308 308  
309 -**PLC as slave**
295 +PLC as slave
310 310  
311 311  (% style="text-align:center" %)
312 -[[image:9.Communication example_html_cc8af72b56d9c539.jpg||height="236" width="750" class="img-thumbnail"]]
298 +[[image:9.Communication example_html_cc8af72b56d9c539.jpg||class="img-thumbnail" height="236" width="750"]]
313 313  
314 -(% class="box infomessage" %)
315 -(((
316 -✎**Note:**
300 +**Note for use**
317 317  
318 318  * 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).
319 319  * 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 -)))
321 321  
322 -= (% style="color:inherit; font-family:inherit" %)**RS485-BD and ETH-BD communiaction**(%%) =
305 +== (% style="color:inherit; font-family:inherit" %)**3 RS485-BD and ETH-BD communiaction**(%%) ==
323 323  
324 324  Please kindly check the link as below.
325 325  
326 -(% class="box infomessage" %)
309 +(% class="box warningmessage" %)
327 327  (((
328 -✎**Note:** at present 5V PLC can not support RS485-BD and ETH-BD
311 +**Note:**at present 5V PLC can not support RS485-BD and ETH-BD
329 329  )))
330 330  
331 331  [[http:~~/~~/docs.we-con.com.cn/wiki/bdmodule/view/Main/Communication/2RS485-BD-3V/>>http://docs.we-con.com.cn/wiki/bdmodule/view/Main/Communication/2RS485-BD-3V/]]