In the industrial process control field, there are three dominating control systems, namely distributed control system (DCS),programmable controller (PLC), field bus control system (FCS). Each of the three systems has its own feature and predominance.

• 在工业过程控制领域,有三大主流控制系统,即分布式控制系统(DCS)、可编程序控制器(PLC)、现场总线控制系统(FCS)。