基于RS-485模块的PLC模拟量测量方法  

A Use of RS-485 Communication for PLC Obtaining Analogue

作　　者：鲍文[1] 丁佳鹏[1] 赵作阳[1] 

机构地区：[1]哈尔滨工业大学先进动力控制与可靠性研究所

出　　处：《微计算机信息》2005年第09S期57-58,138,共3页Control & Automation

基　　金：国防基础科研(K1403060719)

摘　　要：在简要介绍了RS-485通讯的基本特点、实现方法后,针对实际问题,将PLC的RS-485通讯接口作为获得模拟量的通道,结合一小段程序,介绍了利用RS-485通讯接口获得模拟量的方法。最后通过比较,分析了这种方法的实际应用价值。On the basis of brief introduction of the basic character and the realization method of RS-485 communication, RS- 485 communication port is used as the analog input channel and how to obtain analog by RS-485 communication port is projected associated a short piece of program. After compared with others, the practical application of this method is discussed in the article.

关 键 词：IRS-485通讯 硬件组建 软件设计 

分 类 号：TP29[自动化与计算机技术—检测技术与自动化装置]