Abstract: The present invention relates to an elevator control system, comprising a plurality of car position indicators and car indicators for displaying a current floor position information of a car; a plurality of hall call buttons and car traveling operating panels; a plurality of floor controllers and car controllers (or car controller group) for controlling an information signal's input/output of a floor or a car, as well as for storing a group identifying information and an individual identifying information; an elevator controller, a hall signal transmitting repeater and a car signal transmitting repeater for relaying an information signal among the controllers; and a plurality of serial communication lines.

Abstract: The elevator control system includes a plurality of car controllers which control respective operations of a plurality of elevator cars, and at least one column of hall terminals. Each hall terminal in a column of hall terminals controls input/output operations relevant to present running display units for the elevator cars, a hall call button unit and arrival notice unit provided at a floor of the building associated with the hall call terminal. A communication relay system relays communication between the plurality of car controllers and the plurality of hall terminals. The communication relay system includes a plurality of slave communication units, each of which corresponds to a column of hall terminals and receives/transmits data from/to the corresponding column of hall terminals. A master communication unit receives/transmits data from/to the plurality of car controllers and the slave communication units.