July 2010 22 – 359
22 Keyboard Unit
22.1 Introduction
îš„ The keyboard units are available with individual keys and as membrane keyboard.
îš„ The screen soft keys are connected to the keypad board.
îš„ The key signals on the control are transferred by a matrix. With every crosspoint of a ScanLine
(SL) being assigned to a certain key via a ReturnLine (RL).
îš„ If HR 420 electronic handwheel is active, the operation of the machine via keypad is locked.
Keyboards currently used:
Machine-specific keyboards are also used, which however work according to the same principle.
Keyboard Unit Windows Keys smarT.NC keys Touchpad
TE 420 - - -
TE 520 B X X -
TE 530 X - X
TE 530 B X X X
TE 535 Q X X X
The TE 420 was conceived for the use on a TNC 426/430. It can also be used for an
iTNC 530 single-processor control.
The TE 535 Q is a keyboard unit including a machine operating panel.
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