Control device, security management system, and security management method

Control device, security management system, and security management method

A central processing unit 3 of a control device includes: a control calculation unit 32 that performs calculation on the basis of storage content of a nonvolatile storage unit 31 and controls a machine; an update unit 33 that accepts operation input in a first maintenance mode or a second maintenanc...

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Hauptverfasser: HIRAKAWA, KIYOSHI, KUBOTA, YUMIE, HARUKI, YUICHI
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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creator HIRAKAWA, KIYOSHI
KUBOTA, YUMIE
HARUKI, YUICHI
description A central processing unit 3 of a control device includes: a control calculation unit 32 that performs calculation on the basis of storage content of a nonvolatile storage unit 31 and controls a machine; an update unit 33 that accepts operation input in a first maintenance mode or a second maintenance mode, which has a narrower operable range than the first maintenance mode, and updates the storage content of the nonvolatile storage unit 31 in accordance with the operation input; a security management unit 34A that determines permission or prohibition of the operation input in the first maintenance mode with the use of a hardware key 6; and a security management unit 34B that determines permission or prohibition of the operation input in the second maintenance mode without the use of the hardware key 6.
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subjects CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
title Control device, security management system, and security management method
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