Formal and simulation-based timing analysis of Industrial-Ethernet sercos III over TSN

Time-Sensitive Networking (TSN) is becoming more important in automotive and industrial sectors. There is no clear strategy how to use TSN to improve and migrate the established real-time protocols without excluding legacy devices. This paper presents a realistic concept to integrate TSN into automation networks. We choose Sercos as a deterministic Industrial-Ethernet protocol to be extended with the TSN Standards IEEE 802.1AS-Rev and IEEE 802.1Qbv. By simulating the Sercos over TSN network, we investigate the impact of integrating a TSN-capable switch in a Sercos network to enable a topology extension from line/ring to star/tree. By comparing the impact of: increasing the data rate and topology extension, we demonstrate the improvement of Industrial-Ethernet timing performance.