PLC的网络通信在工业现场控制中的应用

Application of Networking Communication Based on PLC in Field Controlling

对现有基于PLC的电气控制系统进行了网络扩展 ,论述了PLC与上位机网络通信环境的建立及用VB开发PLC与上位机的网络通信软件。

The current electric controlling system based on PLC on network is expanded.How to build up networking communicating environment between PLC and computer and how to develop networking communicating software using microsoft VB are mainly introduced.The work will benefit to the future application on the field controlling system based on PLC.