描述
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。
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