摘要
PL C是以微处理器为核心的工业控制装置。他已经广泛地应用于分布式监控系统中 ,主要负责现场高速数据采集、逻辑运算、定时、计数、 PID调节等控制任务 ,并普遍采用计算机作为上位机集中管理。本文介绍了 VB提供的串行通讯控件 MSCom m ,编程口操作命令类型、上位计算机与 PL C之间的链接方式、 PL C的通讯设置 ,并提供了利用 RS 2 3 2串行通讯端口实现计算机与可编程控制器通讯的方法。本文旨在探讨用可视化编程语言实现 PC机与 PL C网络之间数据通讯的技术及软硬件实现方案 ,充分合理地利用系统资源及特点 ,提高通讯效率。
PLC is an industry control computer which applies microprocessor to its core PLC has been applied to the distributed monitor system which is responsible for highspeed data collect of the spot,logic operation,count,PID regulate etc The computer has been used to manage the monitor system This article introduces the serial communication controlMSComm, the command of the programmable operation of PLC,the link method between PC and PLC, the communication parameter′s setup of PLC The article also introduces how to use the RS 232 serial communication port to realize the communication between PC and PLC This article discusses the communication method between PC and PLC and the structure of soft and hardware, applying the visual program language The method can make the best of resources and characters of the system and improve communication efficiency
出处
《现代电子技术》
2005年第5期114-115,共2页
Modern Electronics Technique
