초록 ▼

A remote supervisory and controlling system in which a central control unit generates a dummy transmission signal until receipt of an interruption signal from one of a plurality of input terminal units. In response to the interruption signal, the control limit accesses the input terminal generating

A remote supervisory and controlling system in which a central control unit generates a dummy transmission signal until receipt of an interruption signal from one of a plurality of input terminal units. In response to the interruption signal, the control limit accesses the input terminal generating the interruption signal, which returns its input data.

대표청구항 ▼

A remote supervisory and controlling system comprising: a central control unit operable in any one of a normal mode, an address confirmation mode, and an access mode, and including means for continuously generating a time multiplex divisional dummy signal containing a start pulse signal, an address

A remote supervisory and controlling system comprising: a central control unit operable in any one of a normal mode, an address confirmation mode, and an access mode, and including means for continuously generating a time multiplex divisional dummy signal containing a start pulse signal, an address data signal, and a return wait signal when said control unit is operating in said normal mode; and a plurality of input terminal units electrically connected to said central control unit, each input terminal unit including: means, responsive to said dummy signal, for generating a time multiplex divisional input data signal in synchronism with said return wait signal when an address indicated by said address data signal corresponds to a preset address of the input terminal unit; means for generating an interrupt signal indicative of an interrupt condition and for sending said interrupt signal to said control unit in synchronism with said start signal; means for generating and sending to said control unit a specific address signal in response to an address confirmation mode signal; and means for generating and sending to said control unit said input data signal in response to an access mode transmission signal; said control unit being adapted to operate temporarily in an address confirmation mode in response to receipt of said interrupt signal, and including means for generating said address confirmation mode signal when said control unit is operating in said address confirmation mode, and to operate temporarily in an access mode in response to receipt of said specific address signal and including means for generating said access mode transmission signal when said control unit operates in said access mode.