| 摘要 |
The invention relates to a device (70) for detecting unauthorised manipulations of the system state of an open-loop and closed-loop control unit (8), in particular of a programmable logic controller (10), of a nuclear plant (2), which device should be able to reliably detect unauthorised manipulations. For this purpose, a monitoring module (82) is provided, which monitors the operating state and/or hardware expansion state and/or program state of the open-loop and closed-loop control unit (8) and generates an indication when said state changes. |
