Title:
DATA RECORDING APPARATUS
Document Type and Number:
Japanese Patent JPH03261824
Kind Code:
A
Abstract:
PURPOSE:To improve safety of a plant by enabling detection of a change in a plant state while a power source of a data recording apparatus is shut since state detection is performed as regards input data immediately before the shutdown of the power source and input data with the power source turned ON. CONSTITUTION:Input data immediately before shutdown of a power source is unloaded from a memory 2AA which is backed up by a battery and set in a internal memory 2B. Thus it is possible to detect states as regards the input data immediately before the shutdown of the power source and input data immediately after the power source is turned ON. Plant data at the present time which is necessary to detect the state is input from an input unit 1, and the input data is stored in internal memories 2A, 2B. Then state detection is performed based on plant data stored in the internal memories 2A, 2B, and the result of the state detection is printed out on an printer 3. When print-out is completed, input processsing is resumed so as to repeat similar processing. Thus it is possible to detect the plant state while the power source is shut so that safety of the plant can be largely increased.
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Inventors:
OGAWA YOSHIMI
Application Number:
JP5809690A
Publication Date:
November 21, 1991
Filing Date:
March 12, 1990
Export Citation:
Assignee:
TOSHIBA CORP
International Classes:
G01D21/00; (IPC1-7): G01D21/00
Attorney, Agent or Firm:
Makoto Monda
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