摘要
介绍了在分布式控制系统中利用VB 6.0中的MSComm通信控件与可编程控制器PLC进行通信的方法,给出相关的通信协议和数据帧格式,以及通信的部分程序片断,说明了这种方法的实用性。
This paper introduces the method of serial communication between PC and PLC by using the MSComm control unit in VB language in distributed control system. The relative communication protocol and data frame and some pieces of their programs are also presented. The result showes that this method is practical. [
出处
《世界海运》
2003年第4期41-42,共2页
World Shipping
