PLANT CONTROL SYSTEM AND METHOD

PROBLEM TO BE SOLVED: To provide a plant control system with a general-purpose personal computer (general-purpose PC) to distribute functions to a programmable logic controller (PLC) and the general-purpose PC, and to ensure reliability of the general-purpose PC for industrial use, for example, in t...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HOSHINO TAKEO, SORAO KENJI
Format:	Patent
Sprache:	eng
Schlagworte:	CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS CONTROL OR REGULATING SYSTEMS IN GENERAL CONTROLLING FUNCTIONAL ELEMENTS OF SUCH SYSTEMS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS PHYSICS REGULATING TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a plant control system with a general-purpose personal computer (general-purpose PC) to distribute functions to a programmable logic controller (PLC) and the general-purpose PC, and to ensure reliability of the general-purpose PC for industrial use, for example, in terms of punctuality. SOLUTION: This plant control system comprises: a process computer 1 for managing a plant; a PLC 2 interposed between the process computer 1 and plant equipment 3; and a general-purpose PC 7 for performing arithmetic processing based on arithmetic data received from the PLC 2 and transmitting the arithmetic result data to the PLC 2. The functions are distributed that the PLC 2 executes a sequential control logic while the general-purpose PC 7 executes complicated arithmetic processing. In addition, the arithmetic result data output from the general-purpose PC 7 is always transmitted through the PLC 2 and the consistency of the arithmetic result data is checked in the PLC 2. COPYRIGHT: (C)2009,JPO&INPIT