用VISUAL BASIC实现上位机和PLC的通讯

Communication between Computer and PLC by Using VB Programming

本文以ＯＭＲＯＮ Ｃ２００ＨＳ ＰＬＣ为例，介绍了如何用ＶＩＳＵＡＬ ＢＡＳＩＣ编程软件实现上位机和ＰＬＣ的 通讯。该方案具有硬件简单，使用灵活的特点。对中小型控制系统实现通讯有一定的参考价值。

Taking OMRON C200HS PLC as example,this paper introduce a communication method between computer and PLC by using VISUAL BASIC programming. This solution has simple hardware structure and is flexible. It has great reference value in realizing HMI of mediate or minim control system.