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:
Apr. 07, 2015
Filed:
Oct. 13, 2011
Roland Porsch, Speichersdorf, DE;
Hartmut Ludwig, West Windsor, NJ (US);
Andreas Ziegler, Schwarzenbruck, DE;
Tino Schwarz, Erlangen, DE;
Andreas Kirsch, Hemhofen, DE;
Roland Porsch, Speichersdorf, DE;
Hartmut Ludwig, West Windsor, NJ (US);
Andreas Ziegler, Schwarzenbruck, DE;
Tino Schwarz, Erlangen, DE;
Andreas Kirsch, Hemhofen, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A method for operating a control network includes a first control computer, a second redundant control computer and a plurality of data-processing appliances, wherein a connection between the computers and the appliances is provided by a redundant and diverse heartbeat. The connection between the computers is checked before operating the control network. If a test result is positive, a master function is assigned to the first computer. If the test result is negative, both computers connect the appliances to themselves in a defined sequence. When a predetermined number of appliances are connected to the first computer, the computer takes over a master function and the second computer takes over a standby function, or, when a number, which is less than the predetermined number, of appliances are connected to each of the two computers, a signal is produced which signals a fault state of the control network.