The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 05, 2013
Filed:
Jul. 23, 2010
Matthias Holzaepfel, Stuttgart, DE;
Reinhard Sperrer, Ostfildern, DE;
Stefan Woehrle, Ostfildern, DE;
Klaus Wohnhaas, Fellbach, DE;
Matthias Holzaepfel, Stuttgart, DE;
Reinhard Sperrer, Ostfildern, DE;
Stefan Woehrle, Ostfildern, DE;
Klaus Wohnhaas, Fellbach, DE;
Pilz GmbH & Co. KG, Ostfildern, DE;
Abstract
A network having a plurality of subscribers has at least one message transmitter and at least one message receiver. The at least one message transmitter sends messages at predefined time intervals. The message receiver receives the messages at the predefined time intervals. A delay time of the messages is monitored on the basis of time outs. In addition, at least one of the subscribers repeatedly estimates a current delay time using a time measurement between sending out a request message and receiving a response message. The estimated delay time is compared with a predefined threshold value. If the estimated delay time exceeds the defined threshold value, an error signal is generated.