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A performance analysis of EtherCAT and PROFINET IRT

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1 Author(s)
Prytz, G. ; ABB AS Corp. Res. Center, Billingstad

Ethernet is emerging as the preferred industrial communication platform upon which a multitude of protocols and solutions specially targeted at industrial communication requirements have been developed. This paper concentrates on a set of protocols popularly referred to as the Real-time Ethernet protocols and analyses two key technologies, namely PROFINET IRT and EtherCAT. The real-time performance characteristics of PROFINET IRT and EtherCAT is compared by looking into what factors affect their performance in a set of realistic scenarios. The goal is to provide a scientifically solid study on this subject where many presentations are seriously flawed by basic mistakes, misunderstandings or biased views. The detailed analysis presented here shows that EtherCAT has a performance advantage over PROFINET IRT and the reasons for this are discussed.

Published in:

Emerging Technologies and Factory Automation, 2008. ETFA 2008. IEEE International Conference on

Date of Conference:

15-18 Sept. 2008