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. 22, 2005
Filed:
Nov. 07, 2000
Applicants:
Nan Shan Hwu, Carlisle, MA (US);
Jay Ward, Stratham, NH (US);
David L. Kryger, Chelmsford, MA (US);
Inventors:
Assignee:
Schneider Automation Inc., North Andover, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05B009/02 ;
U.S. Cl.
CPC ...
Abstract
A method and apparatus for providing an active standby control system comprising the steps of providing a first and second controller, each controller having an operating state. Each controller is operably connected to a network. Assigning a network identifier, i.e., Internet Protocol, Media Access Control address, etc., to each controller and sensing the operating state of each controller. The network identifier of each controller is determined by the operating state of each respective controller.