Abstract: An automated production line monitoring system is presented to provide; setting and control of process parameters necessary to operate the various automated processing machine units installed on the line; and surveillance of abnormalities which may occur in the line. The line operator, working in a centralized CRT display and control center, monitors CRT screens showing: an operational preparation display consisting mostly of output signals from various sensors; an operational mode display showing a table of control switches; an interlock display showing various interlocked machine units; a product-type display showing processing steps to be performed on current product; an abnormality list display showing causes of various abnormalities on the line; a status display showing the operating conditions of various machine units; step monitor display showing the sequential step numbers of a production cycle; unit stepping display showing the details of the respective steps shown in the unit stepping display.