在研究工業(yè)網(wǎng)絡(luò)實時性要求的基礎(chǔ)上，給出了工業(yè)以太網(wǎng)和實時以太網(wǎng)的定義，深入分析了6 種主要實時以太網(wǎng)的通信協(xié)議，并概要論述了以太網(wǎng)運動控制、網(wǎng)絡(luò)安全和以太網(wǎng)延伸至現(xiàn)場設(shè)備級等關(guān)鍵技術(shù)。同時，較全面地概述了我國EPA 實時以太網(wǎng)技
術(shù)及其標準。
關(guān)鍵詞實時性實時擴展實時以太網(wǎng)運動控制網(wǎng)絡(luò)安全E 網(wǎng)延伸
Abstract On the basis of the study upon the requirement of real time performance of industrial network，the definitions of industrial Ethernet and real
time Ethernet are given. Six of major communication protocols of real time Ethernet are deeply analyzed and some of the critical technologies，e. g. ，motion
control，network security and Ethernet extension to field equipment level are expounded. Meanwhile the technology and standard of EPA real time
Ethernet in our country are described comprehensively.
Keywords Real - time performance Real - time expansion Real - time Ethernet Motion control Network security Ethernet extension