Timing analysis and response time of end to end packet delivery in switched Ethernet network

This paper presents an approach for timing analysis and response time of end to end packet delivery for Ethernet Networked Control System (ENCS). Ethernet is a popular network for control applications. However, traditional Ethernet network suffers from non-deterministic handling of the network communication caused by Carrier Sense Multiple Access Collision Detection (CSMA/CD) Protocol, where the nodes compete for access to the media. In this paper, a collision free network configuration model for Ethernet is used which is more suitable for control application as compared to the traditional network configurations. The office network is separated from the control network and a fully switched Ethernet network is employed for control network. The timing behaviour of a fully switched network is analysed and the response time of end to end packet delivery in switched Ethernet network is derived. This analysis can then be served as a time delay model for NCS.