MVME2305-900 MOTOROLA

Analyzing the difference between DCS and PLC,the most important points are two points,one is that DCS is distributed control and has a global database;the other is that PLC is a sequential scanning mechanism,and DCS is time-based control.Our system conforms to the first point,such as the modification of an I/O tag,which can also be simultaneously reflected in the HMI.

分析DCS与PLC的区别，最关键的是两点，一是DCS是分布式控制，拥有全局数据库；二是PLC是顺序扫描机制，DCS是以时间为基准的控制。我们的系统符合第一点，例如一个I/O标签的修改，在HMI也可以同步体现。