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:
Aug. 07, 2001
Filed:
Mar. 27, 1998
Paul Francis McLaughlin, Hatfield, PA (US);
Joseph P. Felix, Glenside, PA (US);
Norman Raymond Swanson, Doylestown, PA (US);
Honeywell International INC, Morristown, NJ (US);
Abstract
There is disclosed a redundant process controller for use in a process facility having a plurality of process systems that produce process data, wherein the process data are gathered by process controllers associated with the process systems and are exchanged by the process controllers via a network. The redundant process controller is associated with a first selected process system and is capable of receiving process data from at least one remote process controller and intermittently transferring the received process data to the first selected process system. The redundant process controller comprises 1) a primary process controller capable of storing the received process data, wherein the primary process controller transmits the received process data to the first selected process system; and 2) a secondary process controller capable of storing the received process data, wherein the secondary process controller detects failures in the primary process controller and, upon detection of a failure, transmits to the first selected process system the received process data in lieu of the primary process controller.