Keyboard Unit; General; Front View Of The Keyboard Units - HEIDENHAIN iTNC 530 Service Manual

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22 Keyboard Unit

The keyboard units are available with individual keys and as membrane keyboard.

The screen soft keys are connected to the keypad board.

The key signals on the control are transferred by a matrix. Every crosspoint of a SL (ScanLine)

with a RL (ReturnLine) is assigned to a certain key.

If HR 420 electronic handwheel is active, the operation of the machine via keypad is locked.

For iTNC 530 single-processor controls a TE 420 can be used; for dual-processor controls,

however, a mouse pad and additional Windows keys are required (Te 530, 530 B).

For the HEIDENHAIN programming surface smarT.NC additional keys are necessary.

(TE 530 B, TE 520 B).