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目前,西门子推出了工业以太网,SCALANCE X201-3P IRT,SCALANCE X202-2P IRT和SCALANCE X200-4P IRT(lsochronous RealTime),这是第一批集成了ERTEC(Enhanced RealTime Controller)和SC RJ POF/FCF FOC(Polymer Optical Fiber,Polymer Cladded Fiber)接口的SCALANCE产品的SIMATIC NET Industrial Ethernet实时交换