Communications: electrical – Continuously variable indicating – With meter reading
Patent
1995-05-01
1996-01-02
Zimmerman, Brian
Communications: electrical
Continuously variable indicating
With meter reading
345 1, 345133, 34082537, H04Q 100
Patent
active
054812500
ABSTRACT:
A CRT operation apparatus comprising a CRT display for displaying an image of a plant, including the icons of the terminal devices incorporated in the plant, a low-rank controller for controlling the terminal units, and a high-rank controller for supplying various operation commands to the low-rank controller through a network. When an operator selects one of the icons displayed by touching the CRT display screen, thus selecting the corresponding terminal unit, the high-rank controller collects the first data item representing the condition of the selected terminal unit and the second data item representing the condition of that switch of a central control panel which has been operated to control the selected terminal unit, and supplies both data items in the form of an operable-signal or an abnormal-signal to the CRT display. The CRT display displays data showing whether or not the selected terminal unit can be operated further, in accordance with the signal. Looking at the screen of the CRT display, an operator can understand whether the terminal unit he or she has selected can be operated further or not.
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patent: 4726017 (1988-02-01), Krum et al.
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Japanese Patent Disclosure (Kokai) No. 62-224810; T. Niihashi et al.: Mar. 26, 1986.
Kabushiki Kaisha Toshiba
Zimmerman Brian
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