In a control center entrance security - and control system

摘要

PURPOSE:To supervise and control plural slave stations with a supervisory and controlling board consisting of a fixed hardware, by using a card to select slave equipments. CONSTITUTION:Data from slave station devices R1, R2-RN which come through transmission lines L1, L2-LN are received by an interface LI and are transmitted to a status memory SM through a data bus B in accordance with the program of a central processing unit CP, and the status memory SM receives these data to update and store contents. When the operator selects a card C and sets it to a card reader CR, information of this card is discriminated through an input controlling circuit CI by the central processing unit CP. On a basis of the discrimination result, related parts of a pattern memory PM and the status memory SM are outputted and displayed on a video display device VD through an output controlling circuit CO.