R911328500 REXRTOH

DCS is developed from the analog instrument control system.The initial function is mainly loop adjustment,and then the function of sequence control is added.The design idea of DCS is centralized operation management and decentralized control to improve the reliability and management capability of the entire system.The above advantages of DCS make it still mainstream in the high-end market of control systems.However,the price of DCS is higher than that of PLC,which is sometimes unbearable for some small and medium-sized enterprises with limited funds.

DCS是由模拟仪表控制系统发展而来，初期的功能以回路调节为主，之后又加入了顺序控制的功能。DCS的设计思想是操作管理集中，控制分散以提高整个系统的可靠性及管理能力。DCS的上述优势使它在控制系统的高端市场仍占主流。但DCS比PLC价位高，对一些资金有限的中小型企业有时难以承受。