Boots – shoes – and leggings
Patent
1997-04-29
1999-10-12
Gordon, Paul P.
Boots, shoes, and leggings
36410404, 364131, 714 13, G05B 902
Patent
active
059663049
ABSTRACT:
On-line upgrading of a primary industrial controller is provided through the use of a secondary industrial controller that may assume control of the process controlled by the primary industrial controller. A switch-over of control is orchestrated by a system back-up module that may detect removal of the functional components of the primary industrial controller to initiate the switch-over. Determination of removal of functional modules may be provided by a periodic polling of the functional components on the interconnecting communication link. The system back-up module designates one of the functional modules to poll the system back-up module so that complete coverage of removable components may be had.
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patent: 5155729 (1992-10-01), Rysko et al.
patent: 5313386 (1994-05-01), Cook et al.
patent: 5777874 (1998-07-01), Flood et al.
Cook William B.
Flood Mark A.
Taylor Mark E.
Allen-Bradley Company LLC
Baxter Keith M.
Gordon Paul P.
Horn John J.
Miller John M.
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