【摘要】 介绍了构建嵌入式工业以太网控制系统的基本原理和方法。详细分析了嵌入式智能前端的硬件和软件及以太网通讯的实现。智能前端以AT91RM9200为核心,利用AT91RM9200强大的实时处理能力和众多外设接口实现对下位设备的控制,同时利用LXT971ALC实现与以太网的连接,通过标准的智能前端,现场各种分散的仪表,传感器能方便地直接接入高速以太网,实现智能分布式控制系统。更多还原

【Abstract】 Introduces the basic theory and method of Embedded Ethernet Control System, analyze in details the hardware and software of the whole intelligent-unit and Ethernet communication realization. Intelligent-unit is based on AT91RM9200,using mulit-interface of AT91RM9200 and LXT971ALC to realize the connection with field facility and Ethernet. Through the intelligent-unit,disperse instrument and sensor can conveniently be directly connected to the high speed Ethernet, so can easily make up intelligent distributed control system.更多还原