分析了工业企业综合自动化要求,提出用以太网智能工厂各层次网络的重要性。从工业控制网络的通信特点出发,结合以太网最新发展技术,分析了EPA实时以太网的技术特点。 The necessity of comprehensive automation of industrial enterprises was analyzed, and the importance of using Ethernet at all levels of the factory was proposed. Based on the communication characteristics of industrial control network and the latest development of Ethernet technology, the technical characteristics of EPA real-time Ethernet are analyzed.