Remote supervisory and controlling system

Details Remote supervisory and controlling system Remote supervisory and controlling system

H - Electricity

04

Q

340/94

H04Q 9/14 (2006.01)

Patent

CA 1264187

REMOTE SUPERVISORY AND CONTROLLING SYSTEM ABSTRACT OF THE DISCLOSURE A remote supervisory and controlling system comprises a central control unit, input terminal units and control terminal units, the central control unit including means for constantly providing a dummy transmission signal and an interruption processing means for carrying out an access to an interrupting one of the input terminal units to have its input data signal returned to the central control unit, the input terminal units including respectively means for generating an interruption signal responsive to an address confirmation signal from the central control unit to return thereto a specific address data signal in synchronism with a return wait signal and means responsive to an access mode transmission signal from the central control unit for returning the input data signal indicative of its input data, and the central control unit generating a control data signal to be transmitted to the control terminal units for controlling their associated loads on the basis of the input data signal returned from the input terminal unit to the central control unit, whereby the input data signal can be sent interruptingly to the central control unit irrespective of signal input timing and the control data signal is quickly sent from the central control unit to the control terminal units to improve system responsibility.

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