公开(公告)号：US20180123738A1

公开(公告)日：2018-05-03

申请号：US15800669

申请日：2017-11-01

Applicant: BECKHOFF AUTOMATION GMBH

Inventor： Holger Büttner ,  Florian Essler ,  Rainer Hoffmann ,  Dirk Janssen ,  Karl Weber

IPC: H04L1/08 ,  H04L12/741

Abstract: A first communication subscriber transmits a first data packet comprising data and an identification character to the second communication subscriber. The first communication subscriber and the second communication subscriber respectively determine a first and a second acknowledgement character on the basis of the identification character. The second communication subscriber transmits a second data packet comprising the second acknowledgement character back to the first communication subscriber. The first communication subscriber can thus check, on the basis of the second acknowledgement character, whether the first data packet arrived at the second communication subscriber.