Data processing: generic control systems or specific application – Generic control system – apparatus or process – Sequential or selective
Reexamination Certificate
2011-01-04
2011-01-04
DeCady, Albert (Department: 2121)
Data processing: generic control systems or specific application
Generic control system, apparatus or process
Sequential or selective
C700S083000, C709S208000
Reexamination Certificate
active
07865251
ABSTRACT:
The claimed system provides an I/O card that is used to interface two process controllers over a communication line that is separate from a primary communication line connecting the two process controllers to a workstation. The process controllers can access the I/O cards in a similar manner to I/O cards used to connect to field devices. In this manner, the physical hardware and software architecture does not need to be modified for inter-controller communications. Inter-controller communications can be programmed as general I/O communication.
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Burr Kent Allan
Law Gary Keith
Sherriff Godfrey Roland
De'cady Albert
Dunn Darrin
Fisher-Rosemount Systems Inc.
Marshall & Gerstein & Borun LLP
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