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:
Jul. 31, 2012
Filed:
May. 21, 2009
Applicants:
Holger Büttner, Berlin, DE;
Karl Weber, Altdorf, DE;
Inventors:
Holger Büttner, Berlin, DE;
Karl Weber, Altdorf, DE;
Assignee:
Beckhoff Automation GmbH, Verl, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 13/00 (2006.01); G01R 31/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
A communication system comprising a master unit and a plurality of slave units. In error mode, e.g. when a path error or a complete failure of a subscriber occurs, data transmission is carried out in a loop, starting from the master unit, via a first communication path and a second communication path.