Method for synchronizing time in an ethernet-based network

US12003613B2 · kind B2 · utility

Assignee

• Beckhoff Automation GmbH · DE

Inventors

• Holger Büttner · Verl, DE
• Dirk Janssen · Verl, DE
• Erik Vonnahme · Salzkotten, DE
• Hans Beckhoff · Verl, DE
• Thomas Rettig · Rheda-Wiedenbrück, DE
• Thorsten Bunte · Gütersloh, DE
• Johannes Beckhoff · Schloß Holte-Stukenbrock, DE
• Guido Beckmann · Verl, DE
• Karl Weber · Witten, DE

Key dates

• Filing date: Mar 3, 2022
• Grant date: Jun 4, 2024
• Expiry date: May 27, 2042

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04L2012/4026
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

A method for synchronizing time in an Ethernet-based network having a master network subscriber and a slave network subscriber includes sending out a first telegram via the master network subscriber, where the slave subscriber receives the first telegram at a first receipt time value of a local system time and stores the first receipt time value. The method can also include reading out the first receipt time value via the master subscriber, sending out a second telegram by the master subscriber, where the slave subscriber receives the second telegram at a second receipt time value of the local system time and stores the second receipt time value, and reading out the second receipt time value via the master network subscriber. A speed parameter of the local system time can be calculated from the receipt time values via the master network subscriber, and transmitted to the slave subscriber.