介绍了工业以太网技术的新进展： 工业以太环网冗余技术( 环冗余、 双环冗余和变换式工业以太网) 、 实时以太网协议( Ethernet Powerlink和 Beckhoff EtherCA T ) 、 新型工业以太网连接器、 以太网共缆供电规范、 嵌入式Internet硬件芯片协议及其在现场仪表中的应用。 -Introduction of Industrial Ethernet Technology: Industrial Ethernet Ring Redundancy Technology (ring redundancy, redundancy and transform bicyclol Industrial Ethernet), real-time Ethernet protocol (Ethernet Powerlink and Beckhoff EtherCA T) , the new Industrial Ethernet connector, Ethernet Cable Power Supply norms, embedded Internet protocol hardware chip and its application in field instrument applications.