应用面向对象法设计PLG与计算机之间通讯接口软件

Using object-Oriented programming to design the communication software interface between the PLC and the computer

在由计算机和PLC组成的监控系统中 ,通讯接口模块是PLC和计算机之间信息交流的关键。本文阐述了一种应用面向对象法进行通讯接口模块设计的思路和方法 ,并给出主要软件结构。采用此方法设计的通讯接口模块具有良好的移植性和代码库的可重用性。从而避免了类似工作的重复进行。

The communication software module is the key to the information exchange between the PLC and the computer,which compose a supervisory control system.This paper presents the way that uses the Object Oriented Programming to design the communication software interface module.Also the main part of the program is given.By means of this designing method,the module is reusable as to avoid redundant work.