Dependency on prioritized data in the delay analysis of foundation fieldbus

This paper introduces a mathematical model for analyzing the delay performance of time-critical and time-available data in the foundation fieldbus data link layer token-passing service. The mathematical model introduces the concept of virtual token rotation time to account for the dependency of the token rotation times on prioritized data in analyzing their data latency. The mathematical model also includes scheduled service for periodic data transmission to examine its effect on the performance of the token-passing service. The validity of the analytical model was verified using a simulation experiment. (C) 2008 Elsevier Ltd. All rights reserved.This study was supported by a grant from the Basic Research Program of the Ubiquitous Sensor Network Research Center (USNRC) funded by the Gyeounggi Regional Research Center (GRRC) plan