中文摘要：

工业网络协议的设计是网络控制系统分析和设计的重要内容.网络诱导的延时值越小，则越有利于系统的稳定和控制算法的设计.在工业以太网络通信协议（IECP）模型中，工业通信协议一般建立在传输层或是应用层.通过工业通信模式、数据报和IECP通信程序，详细介绍了IECP的设计.提出了网络协议的性能指标，指出实时性是最重要的指标，并通过实验系统，进行了基于TCP、UDP和IP的IECP的实时性比较.结果说明了基于不同层IECP的性能差异性.同时也证明了基于不同层IECP的可行性.

英文摘要：

Design of industrial network protocols is an important job of networked control systems. The small net-induced delay is to the good for the plant stability and algorithm design. In the model of industrial Ethernet communication protocols （IECP）, industrial communication protocols are usually in the transmission lay or application lay. With communication models, datagram and IECP programming, the design method of IECP was presented. The performance evaluation methods of industrial networks were also expressed, in which the real-time property is the most important one. The experiments of the network response time based on different lays were shown, whose results confirmed that IECP has different properties based on different lays. And it also confirmed the feasibility and validity of IECP with different lays.