摘要
针对DMQ4 0 35门机中采用变频器传动与PLC控制相结合 ,并运用上位机进行最优控制的同步旋转系统 ,介绍PLC与上位机通信的基本原理和具体的设计方法 ,给出运用VisualC ++提供的ActiveX控件来实现串行通信的程序设计。
According to the combination of PLC and frequency changer drive in DMQ4035 portal crane, consideration of the synchronous rotate system optimally controlled by superior, this paper introduces the basic principle and the practice design method for communication between PLC and superior, gives the program design by Active X in Visual C++ to realize the serial communication.
出处
《港口装卸》
2004年第1期20-22,共3页
Port Operation
