Abstract
This paper analyzes the fieldbus system of industrial network from the perspective of the typical weak hard real-time -- hard real-time. Based on the WorldFIP protocol, the periodic and aperiodic management modes of WorldFIP bus are discussed, and the utilization formulas of different aperiodic communication modes are given. Finally, the bandwidth utilization of centralized control bus protocol WofldFIP's aperiodic task scheduling is analyzed, and the performance is compared under different aperiodic arrival rates.
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