基于LabVIEW与PLC之间通信接口的设计  

Design of the Basis of the Communication Interface between LabVIEW and PLC

作　　者：王行娟[1] 万伟[1] 周伟[1] 

机构地区：[1]武汉理工大学信息工程学院,湖北武汉430070

出　　处：《武汉理工大学学报（信息与管理工程版）》2006年第11期45-48,共4页Journal of Wuhan University of Technology：Information & Management Engineering

基　　金：湖北省教育厅教研基金资助项目(2002078)

摘　　要：详细介绍了基于LabVIEW与PLC之间通信的带有光电隔离的智能转换器的设计;阐述了从PLC接口上高效率的产生电路所需的电源;给出了实现RS-232接口和RS-485接口的智能转换的硬件电路,采用双光隔提高数据传输速率。The design of intelligent conversion with optical isolation based on communication between LabVIEW and PLC is discussed. The required power supply that the circuit needs from the PLC interface is expounded. A hardware circuit for intelligent conversion between RS - 232 interface and RS - 485 interface is presented. Dual photo couplers are adopted to raise the transfer rate of the data.

关 键 词：RS-232 RS-485 PLC 光电隔离 智能转换 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]