Performance Analysis of Profibus DP and Profinet in a Motion Control Application

摘要

This work proposes a performance analysis of industrial communication networks applied in a widely used motion control application of an electric AC motor. It compares Profinet and Profibus DP technologies. Performance is evaluated from technical specifications of both protocols and practical experiments for data collection and analysis of the following indicators: cycle time and jitter. As these protocols are used in the loop control, another indicator is used from the control engineer point of view, the settling time of motor position control. Conclusions show that Profibus DPV0 is faster; however, Profinet version IRT has higher determinism. Both achieved settling time that could accomplish the application.