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从具有集中智能和外围设备的自动化结构转变为基于PROFInet的智能现场设备的分布式自动化结构。从分散化发展为分布式系统最初的结构为集中控制的自动化系统,其过程控制器直接与传感器和执行器耦合(如4-20mA的接口)。自二十世纪八十年代以来,自动化工程经历了两个重要的发展阶段。
From an automation structure with centralized intelligence and peripherals to a distributed automation structure for PROFInet-based smart field devices. From decentralized development to distributed systems The initial architecture was a centrally controlled automation system whose process controllers were coupled directly to sensors and actuators (eg 4-20mA interfaces). Since the 1980s, automation engineering has undergone two important stages of development.