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.

Date of Patent:
Jun. 21, 2005

Filed:

Apr. 07, 2003
Applicants:

David A. Vasko, Macedonia, OH (US);

Joseph Lenner, Hudson, OH (US);

Inventors:

David A. Vasko, Macedonia, OH (US);

Joseph Lenner, Hudson, OH (US);

Assignee:

Rockwell Automation Technologies, Inc., Mayfield Heights, OH (US);

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G05B009/02 ;
U.S. Cl.
CPC ...
Abstract

Safety level error detection comparable to that provided by redundant wired safety relays is obtained on a backplane of a programmable logic controller or the like by a combination of error detection methods that in sum provide the requisite level of error detection required without necessitating a particular hardware requirement or duplicative message transmissions.


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