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Changes for page 07 Communication

Last modified by Devin Chen on 2024/08/19 14:28
From version 17.1
edited by Theodore Xu
on 2024/08/08 10:10
Change comment: There is no comment for this version
To version 11.1
edited by Mora Zhou
on 2023/12/22 11:05
Change comment: There is no comment for this version

Summary

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Author
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1 -XWiki.AiXia
1 +XWiki.Mora
Content
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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
10 10  |=MODBUS RTU Slave|PLC is master device|20H
11 11  |=MODBUS ASCII Slave|PLC is master device|30H
12 12  
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149 149  
150 150  **Read bit address from device**
151 151  
151 +(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 +
152 152  (% style="text-align:center" %)
153 153  [[image:1641781999957-637.png||height="390" width="750" class="img-thumbnail"]]
154 154  
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194 194  
195 195  == **LX3VP COM2 N:N Connection** ==
196 196  
197 -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).
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).
198 198  
199 199  (% style="text-align:center" %)
200 200  [[image:9.Communication example_html_8c43baa1ae891689.jpg||height="142" width="500" class="img-thumbnail"]]
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261 261  )))
262 262  |M8191|Processing sending data
263 263  
264 -== **Communications format** ==
265 +== **Communications format:** ==
265 265  
266 266  (% border="1" %)
267 267  |=**Item**|=(% style="width: 115px;" %)**Parameters**|=(% style="width: 239px;" %)**b15(RS2)**|=**b14-b8**|=**b7**|=**b6**|=**b5**|=**b4**|=**b3**|=**b2**|=**b1**|=**b0**
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281 281  |(% rowspan="2" %)**Data bit**|(% style="width:115px" %)7 bit|(% style="width:239px" %)-|-|-|-|-|-|-|-|0
282 282  |(% style="width:115px" %)8 bit|(% style="width:239px" %)-|-|-|-|-|-|-|-|1
283 283  
284 -== **Communication error code (D8211~~D8218)** ==
285 -
286 -|=(% style="width: 195px;" %)**Error code**|=(% style="width: 881px;" %)**Description**
287 -|(% 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.
288 -|(% style="width:195px" %)2|(% style="width:881px" %)The other slave stations have responded to requests sent by the master station.
289 -|(% style="width:195px" %)3|(% style="width:881px" %)The count values in the parameter data do not match those responded by the slave stations.
290 -|(% style="width:195px" %)4|(% style="width:881px" %)The response messages from the slave stations are incorrect.
291 -|(% 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.
292 -|(% style="width:195px" %)20|(% style="width:881px" %)The messages from the master station are incorrect.
293 -|(% style="width:195px" %)33|(% style="width:881px" %)The slave station is unresponsive.
294 -|(% style="width:195px" %)34|(% style="width:881px" %)The other slave stations have responded to requests sent by the master station.
295 -|(% style="width:195px" %)35|(% style="width:881px" %)The count values in the parameter data do not match those responded by the slave stations.
296 -|(% style="width:195px" %)49|(% style="width:881px" %)The slave station received requests from the master station before receiving the parameters.
297 -
298 298  == **Program example** ==
299 299  
300 300  LX3VP COM2 port communication parameters: 9600, 1, 8, NONE. Register block mode: 3