Title:
PLANT SUPERVISORY AND CONTROLLING DEVICE
Document Type and Number:
Japanese Patent JPS60217450
Kind Code:
A
Abstract:
PURPOSE:To use efficiently each CPU independently of the load of the supervisory controlling process by switching an input destination of a process signal in response to the state of a plant, and reconstituting the load decentralization of the supervisory processing. CONSTITUTION:When the plant is changed slowly, that is, in case of normal state, all signals are inputted to a CPUA12 and the supervisory processing is conducted. A CPUB13 and a CPUC14 execute the data processing or a job of off-line. When the CPUA12 recognizes that the plant changes in a high speed, switches 23-25 are changed over and signals of sensors 19-21 are inputted respectively to processes I/O 16-18. An instruction to provide high speed supervisory processing to the CPU13, 14 is issued through a data transmission line 15 at the same time. While the plant changes rapidly in such a way, three sets of the CPUs are used exclusively to the plant supervisory processing.
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Inventors:
YAMAO AKIHIRO
Application Number:
JP7264184A
Publication Date:
October 31, 1985
Filing Date:
April 13, 1984
Export Citation:
Assignee:
TOSHIBA KK
International Classes:
G05B15/02; G05B19/042; G06F15/16; G06F15/177; (IPC1-7): G05B15/02; G06F15/16
Attorney, Agent or Firm:
Noriyuki Noriyuki