5 Real-Time, Ethernet-Based Fieldbuses Compared -- Which Standard Stands Apart?

This paper examines five different important protocols that have emerged as contenders to offer the best price/performance open standard for real-time fieldbuses. In alphabetical order, the standards being compared are , EtherNet/IP, Ethernet Powerlink, IRT, and III. There are other technologies that leverage Ethernet as well, but their components are not sufficiently published, downloadable or promulgated in the open source community to be considered standard and open. This paper does not address these proprietary technologies, including Mitsubishi's CC Link Field and Yaskawa's Mechatrolink III.

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