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介绍了Ethercat的通信系统组成和工作原理、通信协议特点,设计出一种基于S3C2440的Ethercat实时工业以太网从站节点;并分析研究了主从站之间数据特点及数据交换方法,通过采用最小截止优先算法调度周期性数据提高系统调度实时性。
This paper introduces the composition and working principle of Ethercat communication system and the characteristics of communication protocol, and designs a EtherCAT real-time industrial Ethernet slave node based on S3C2440. By analyzing and studying the data characteristics and data exchange method between master and slave, Deadline Priority Algorithm Scheduling Periodic Data to Improve System Scheduling Real - time.