用VB5.0实现PC机与多台单片机控制系统的多机通讯

Multi-machine communication between a PC and single-chip microcomputers based on VB5.0

在分布式控制系统中,采用PC机作为上位机,调度多台下位机,从而实现计算能力强,容量大的分布式控制系统。VB5.0为新一代上位机编程工具,其具有可视化编程特点,可实现良好的人机界面。本文介绍了用VB5.0实现与多台单片机通讯的原理、方法。

In a distributed control system (DCS), a PC is often used as a master unit, manipulating several Singlechip Microcomputers (slave units), and so a DCS with powerful caculation capability is formed. As a new generation of programming tools, VB5.0 has the virtues of visualizing and easily to build friendly manmachine interface. In this article, the methods and skills of constructing multimachine communication are introduced.