Description
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。
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