Electrical computers and digital data processing systems: input/ – Input/output data processing – Peripheral monitoring
Reexamination Certificate
2008-03-19
2010-02-09
Nguyen, Tanh Q (Department: 2182)
Electrical computers and digital data processing systems: input/
Input/output data processing
Peripheral monitoring
C710S008000, C710S015000, C710S019000, C710S062000, C710S063000, C710S064000, C710S072000, C710S073000, C710S074000, C710S100000, C714S001000, C714S002000, C714S003000, C714S005110, C714S006130, C714S006130, C714S010000, C714S011000, C714S012000, C714S013000, C714S042000, C714S043000, C714S044000, C714S048000, C714S100000, C714S798000, C714S799000, C370S216000, C370S420000, C370S421000, C709S220000, C709S221000, C709S223000, C709S224000
Reexamination Certificate
active
07660915
ABSTRACT:
A process control system is provided having a plurality of I/O devices in communication using a bus. A primary redundant I/O device and a secondary redundant I/O device are coupled to the bus, where the secondary redundant I/O device is programmed to detect a primary redundant I/O device fault. The secondary redundant I/O device, upon detecting the primary redundant I/O device fault, publishes a primary redundant I/O device fault message on the bus. The controller may deactivate the primary redundant I/O device and activate the secondary redundant I/O device responsive to the primary redundant I/O device fault message.
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Apel Michael D.
Dienstbier Steven L.
Fisher-Rosemount Systems Inc.
Marshall & Gerstein & Borun LLP
Nguyen Tanh Q
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