DEVICE FOR DETECTING UNAUTHORIZED MANIPULATIONS OF THE SYSTEM STATE OF AN OPEN-LOOP AND CLOSED-LOOP CONTROL UNIT AND A NUCLEAR PLANT HAVING THE DEVICE
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United States of America Patent
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Aug 6, 2015
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Feb 6, 2013
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A device detects unauthorized manipulations of a system state of an open-loop and closed-loop control unit, in particular of a programmable logic controller, of a nuclear plant. The device should be able to reliably detect unauthorized manipulations. For this purpose, a monitoring module is provided, which monitors the operating state, hardware expansion state and/or program state of the open-loop and closed-loop control unit and generates an indication when the state changes.
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