CASSETTE AUTOCHANGER CONTROLLER

PURPOSE:To control a switcher and to display its condition as wall by changing a matrix setting data in accordance with the number of I/O lines. CONSTITUTION:On a cassette housing secction 13, bins 13A to 13V for housing cassetes are hierarchically formed and cassettes 31L, 31M and 31S different in sizes are optionally housed. Then, the matrix setting data is changed in accordance with the number of I/O lines and a switcher 20 is controlled. When the state display mode of the changer 10 is specified, a cassette display processing procedure is started the stage numbers of the bins 13A to 13V are allocated and the value of a variable (i) is given. (i) is a variable adding 1 in sequence from 0, whether the value of the variable (i) is coincident with the umber of colums of the bins or not is judged and when a negative result is gained, no change in the cassette state is indicated. When a positive result is gained, the insertion of a cassette into the bottle or its taking-out is judged. Thus, a switcher display section on a monitor 12A is made corresponsive to the switcher in accordance with its constitution.