基于PLC的不定字长的串行通讯的研究及实现

Research and Implementation of the Variable Length Series Communication Based on PLC

本文介绍了一种新的实现PLC与PC机之间不定字长通讯的方法。并给出了具体程序实现过程。解决了传统用字符中断方式通讯时产生的丢字符,遗失信息造成的通讯可靠性低,浪费计算机资源,降低程序的执行效率等问题。此通讯方法已成功用于微波烧结控制系统中。

This paper introduces a new method to deal with variable length communication and gives the details of the program.This method can solve the problems such as the low reliability in the communication,waste of computer resource and the low program executing efficiency which were caused by using the traditional method.