基于OPC技术的PC与西门子PLC的实时通讯

Real-time Communication Between PC and Siemens PLC Based on OPC

介绍OPC技术及数据交换基本原理。目的在于通过以太网架构某监控系统,并利用OPC技术在LabVIEW中开发实现PC与西门子S7-300PLC实时通信。实际应用表明,该监控系统运行稳定、可靠性高,效果良好。

The OPC technology and the principles of OPC data exchange is introduced in this paper.The main purpose is to design a supervisory control system based on Ethernet.Realization is made for the method of communication between PC and Siemens S7-300PLC by OPC on LabVIEW platform.Practical application shows this supervisory control system is running with steady,reliable and good performance.