Description
PLC与DCS无法比较，PLC是控制器，是孤立的产品，而DCS是系统。但PLC可以与DCS的控制站比较，PLC的循环周期在10毫秒左右，而DCS控制站在500毫秒左右，PLC的开放性更好，作为产品其独立工作的能力更强。
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