The Influence of PROFIBUS Frame Transmission Time on Transmission Delay Property

The transmission time delay property of fieldbus is an important factor that influences the real time property of industrial control networks. The frame transmission time of message is one important part of fieldbus transmission time delay, based on the fieldbus transmission time delay model. PROFIBUS frame transmission time mathematical model was proposed, for four data link layer severs of PROFIBUS. The correctness of frame transmission time mathematical model has been validated by the simulation.