Data transmission method and automation-communication network

US10735218B2 · kind B2 · utility

Assignee

• Beckhoff Automation GmbH · DE

Inventors

• Thorsten Bunte · Gütersloh, DE
• Holger Büttner · Verl, DE
• Dirk Janssen · Verl, DE
• Thomas Rettig · Rheda-Wiedenbrück, DE
• Hans Beckhoff · Verl, DE
• Erik Vonnahme · Salzkotten, DE

Key dates

• Filing date: Jul 10, 2019
• Grant date: Aug 4, 2020
• Expiry date: Jul 10, 2039

Classification

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

Abstract

In an automation-communication network, at least one distribution node comprises input/output interfaces each connected to at least one network segment. In a first network segment a first subscriber and in a second network segment a second subscriber are arranged. Data are exchanged between the first and the second subscriber by telegrams realized as scheduled telegrams and unscheduled telegrams. The distribution node receives an unscheduled telegram on an input/output interface and sends an unscheduled telegram on a further input/output interface. The distribution node determines a transmission duration for transmission of the unscheduled telegram. The distribution node transmits the unscheduled telegram. Prior to transmission, the distribution node deposits a first telegram information in a data field. The distribution node fragments the unscheduled telegram if the telegram cannot be transmitted within a time slot. Prior to transmission of the unscheduled telegram, the distribution node enters a second telegram information into the data field.