Description
PLC控制和DCS控制系统不是一个逻辑层次上的概念，从名称上就能看出:PLC是以功能命名，DCS是以体系结构命名。从原理上看PLC就可以组成DCS。当然两者性能差异还是存在的，要具体看产品和需要。从应用角度来说，简单地以PLC,DCS来区分
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