The CP66xx control panels are designed for use as human-machine interface. Operating and display elements create an independent unit, separated from control level. The control panel has flat, elegant form, with large surface presented to the user, but low depth. The PC is protected in control cabinet, yet its location is easily accessible. The PC housing can be optimised for fitting PC components. Operating and display elements form an independent unit, separate from the control level. The computer is located in control cabinet. This concept, which has been thoroughly implemented in the Beckhoff control panel, allows the user much freedom. Built-in control panel with Ethernet interface. Aluminium front with sheet-steel rear cover, front side IP65, rear side IP20. Front laminate available in five variants, only display, function keys and 10 PLC special keys with LED, numeric keyboard and 10 PLC special keys with LED, alphanumeric PC keyboard in US layout and 10 PLC special keys with LED, alphanumeric PC keyboard in US layout and 16 PLC special keys with LED on the sides.