摘要
针对控制系统中上位机与S7-200系列PLC通信的实际问题,总结了计算机与S7-200系列PLC的几种通信方法,介绍了基于VB6.0的串行通信编程的ActiveX控件MSComm.
According to the communication problem between upper-computer and S7-200 series PLC, this paper summarizes several ways to communicate supervision computer to S7-200 PLC. MSComm components of Active X based on VB6.0 are introduced.
出处
《武汉工业学院学报》
CAS
2005年第3期41-43,共3页
Journal of Wuhan Polytechnic University
