Redundant watchdog method and system utilizing safety partner controller
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United States of America Patent
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Apr 25, 2017
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app pub date -
Jan 23, 2015
filing date -
Jan 23, 2015
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Abstract
This disclosure provides an automation controller method, system and apparatus including a redundant watchdog utilizing a safety partner controller. According to an exemplary controller, the controller includes a first processing unit, a second processing unit, and an integrated circuit configured to receive as inputs fault indicator signals from the first and second processing units, and the integrated circuit configured to disable I/O communications for a fault condition detected by the first or second processing units.
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