Numerical controller

In a numerical controller comprising an input unit which introduces tool instructions, a memory unit which stores tool instruction numbers introduced through said input unit, an output unit which sends tool instruction numbers stored in said memory unit to a machine tool, an arithmetic unit, a control unit which controls said input unit or memory unit operation, and a setting display unit which sets tool data, machining data, and the like to said memory unit, and displays them,

• said setting display unit comprises:
• a display unit which includes an echo display area for displaying a plurality of sets of echo data, each set being composed of a pair of echo data, a data display area for displaying data, and a numerically-controlled operation status display area for displaying the numerically-controlled operation condition;
• a total functional key group for selecting pictures that correspond to desired functions of said display unit;
• a switching key for switching the upper and lower stages and for changing the background color of echo data such that either the upper stages or the lower stages of each of the sets of echo data displayed on said echo display area will become effective;
• and
• an echo key group which is arrayed in a zig-zag manner to correspond to each of the sets of echo data displayed on said echo display area, and which changes the background color of echo data by setting the echo data that are rendered effective by said switching key.

In a numerical controller comprising an input unit which introduces tool instructions, a memory unit which stores tool instruction numbers introduced through said input unit, an output unit which sends tool instruction numbers stored in said memory unit to a machine tool, an arithmetic unit, a control unit which controls said input unit or memory unit operation, and a setting display unit which sets tool data, machining data, and the like to said memory unit, and displays them,

• setting display unit comprises:
• a display unit which comprises an echo display area for displaying a plurality of sets of echo data, each set being composed of a pair of echo data, a data display area for displaying data, and a numerically-controlled operation status display area for displaying the numerically-controlled operation condition;
• a total functional key group for selecting pictures that correspond to desired functions of said display unit;
• a switching key for switching the upper and lower stages and for switching the color of markings at the heads of echo data, such that either the upper stages or the lower stages of each of the sets of echo data displayed on said echo display area will become effective;
• and
• an echo key group which is linearly disposed to correspond to each of the sets of echo data displayed on said echo display area, and which changes the background color of echo data by setting the echo data that are rendered effective by said switching key.