8937-HN MTL

PLC and DCS can not be compared,PLC is a controller,is an isolated product,and DCS is a system.But the PLC can be compared with the DCS control station.The cycle period of the PLC is about 10 milliseconds,while the DCS control station is about 500 milliseconds.The PLC has better openness and has a stronger ability to work independently as a product.

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。