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Title: Enforcing the timing behavior of real-time stations in legacy bus-based industrial Ethernet networks
Author: Moraes, Ricardo
Carreiro, Francisco Borges
Bartolomeu, Paulo
Silva, Valter
Fonseca, José
Vasques, Francisco
Keywords: Real-time communication
Ethernet networks
Token passing
Issue Date: 2011
Publisher: Elsevier
Abstract: This paper proposes a virtual token-passing mechanism, which allows the coexistence of legacy industrial Ethernet devices with enhanced (real-time) devices in the same bus network. The VTPE mechanism allows the implementation of real-time (RT) applications upon legacy bus-based industrial networks, enforcing the adequate timing behavior of the supported applications. It enables the traffic separation between legacy Ethernet stations and enhanced (RT) stations. A set of experiments has been performed, which allowed to measure the message access delay and the token rotation time. The achieved results clearly demonstrate that the VTPE architecture enables the support of RT communication upon legacy bus-based industrial Ethernet networks, even when the communication medium is shared with uncontrolled traffic sources.
Peer review: yes
DOI: 10.1016/j.csi.2010.05.002
ISSN: 0920-5489
Appears in Collections:ESTGA - Artigos

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