Abstract
This paper presents an optimization solution on PROFIBUS-DP bus protocol with Ethernet technology. This plan can meet the demands of higher speed and higher reliability of transmission control protocol inside enterprises. It sets up DP Ethernet by defining physical layer, data link layer protocol and establishing EDDL function. The new constructed protocol named DP Ethernet is compatible with the applications based on upper PROFIBUS-DP protocols. It also can support much wider communication bandwidth. DP Ethernet protocol is more efficient than PROFIBUS-DP through analysis on message cycle time and message coding efficiency of networks based on these two protocols.
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