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:
Nov. 30, 2004
Filed:
Nov. 07, 2000
Herbert Barthel, Herzogenaurach, DE;
Johannes Birzer, Stulln, DE;
Heiner Fuchs, Erlangen, DE;
Hartmut von Krosigk, Erlangen, DE;
Hartmut Schuetz, Heroldsbach, DE;
Andreas Schenk, Erlangen, DE;
Armin Trauth, Landau, DE;
Karl Weber, Altdorf, DE;
Joerg-Peter Zaech, Nuremberg, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
An apparatus for and a method of operating an automation system. A processing unit subjects useful information which is received via a telegram to a user designated logic operation and drives an output channel in accordance with a result of the logic operation. The processing unit monitors a time sequence of process data transmitted with the useful information and drives the output channel only when the time sequence lies within predetermined tolerances. A monitoring unit monitors the processing unit and shifts the output channel to a safe condition as soon as a malfunction of the processing unit is detected. The output channel may include a readback channel which reads back a signal applied to the output channel whereby the monitoring unit compares the applied signal and the readback signal and shifts the output channel to a safe state if the applied signal and the readback signal differ.