HR 520
Keypad I:               X, Y, Z, IV, V, VI
Keypad II:              2x arrow (up, down),
                        handwheel
Keypad III:             Minus, rapid traverse,
                        plus
Keypad IV:              Spindle start, actual
                        position capture, NC
                        start, spindle stop, CTRL,
                        NC stop
Keypad V:               5x soft keys without
                        symbol
Clips keys:
Permissive buttons:     1xNO/1xNO
Emergency stop:         1
Number of magnetic
holding pads:           2
Number and type of      100 steps / mechanical
snap-in positions:      snap-in
Potentiometer:          Feed rate, spindle speed
Display:                2.5-inch diagonal / mono /
                        resolution 128 x 64
Number of status LEDs:  6
Data transfer:          Cable
Electrical connection:  Flange socket M23, male,
                        12-pin