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Video: Premiere For Sercos Via Time-Sensitive Networks
The Sercos TSN demonstrator was realized by the Institute for Control Engineering of Machine Tools and Manufacturing Facilities (ISW) at the University of Stuttgart with the support of several industrial partners. It shows the possibilities to provide a real-time and multi-protocol network infrastructure based on TSN for automation technology and beyond.
Communication in real time
The demonstrator consists of a TSN-based Sercos III Soft Master with a soft CNC from Industrielle Steuerungstechnik GmbH (ISG), which communicates with Sercos III servo drives from Bosch Rexroth via TSN switches from Hirschmann Automation & Control GmbH. In parallel, video streams from a webcam are transmitted to a remote display via the same TSN network infrastructure without, however, impairing the characteristics and functionality of Sercos real-time communication.
“The Sercos TSN demonstrator has provided practical proof that Sercos III devices can be integrated into a TSN network unchanged and can communicate with each other via TSN. Neither functionality nor real-time characteristics are restricted. Existing tools, such as the Sercos Monitor as a diagnostic and analysis tool, can also continue to be used in full,”says Peter Zahn, project manager for the Sercos TSN demonstrator at the ISW at the University of Stuttgart.
Dr. Oliver Kleineberg, responsible for the Advance Development department at Hirschmann Automation & Control, adds: “The implementation of TSN in products requires a solid technical platform in time synchronization. The Hirschmann RSP35 switches with their FPGAs and extensive support for the IEEE 1588 protocol were the ideal vehicle for a prototypical development that is expected to continue to series production. In 2017 we expect the first results from our TSN development work. This short time horizon and our optimism are based on the already very high stability of the TSN prototypes and the success in development: Based on the IEEE TSN standards, efficient and targeted development is already possible today."
Peter Lutz, Managing Director of Sercos International eV, added: “The Sercos TSN demonstrator shows impressively that Ethernet TSN enables the convergence of conventional real-time Ethernet solutions to a uniform, standardized and integrated network infrastructure. Sercos technology benefits from TSN in several ways. On the one hand, standard Ethernet components with integrated real-time capability can be used and flexible network topologies can be implemented. On the other hand, higher transmission bandwidths are also available with Ethernet TSN.”(Jv)
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