HEIDENHAIN TNC 640 User Manual page 680

17
Entering the feed rate F
Press the F3 (MSF) handwheel soft key
Press the F3 (F) handwheel soft key
Select the desired feed rate by pressing the F1 or F2 key
Confirm the new feed rate F with the F3 (OK) handwheel soft
key
If you press and hold the F1 or F2 key, each time it
reaches a decimal value 0 the control increases the
counting increment by a factor of 10.
By also pressing the CTRL key, you can increase the
counting increment by a factor of 100 when pressing F1
or F2.
Presetting
Refer to your machine manual.
The machine tool builder can disable presetting in
individual axes.
Press the F3 (MSF) handwheel soft key
Press the F4 (PRS) handwheel soft key
If required, select the axis in which the preset is to be set.
Zero the axis with the handwheel soft key F3 (OK) or with F1
and F2 set the desired value and then confirm with F3 (OK).
By also pressing the CTRL key, you can increase the counting
increment to 10
Changing modes of operation
With the handwheel soft key F4 (OPM) you can use the handwheel
to switch the operating mode, provided that the current status of
the control allows a mode change.
Press the F4 (OPM) handwheel soft key
Select the desired operating mode by handwheel soft key
MAN: Manual operation
MDI: Positioning w/ Manual Data Input
SGL: Program run, single block
RUN: Program run, full sequence
Generating a complete traversing block
Refer to your machine manual.
Your machine tool builder can assign any function to the
Generate NC block handwheel key.
Select the Positioning w/ Manual Data Input operating mode
If required, use the arrow keys on the control's keyboard to
select the NC block after which the new traversing block is to be
inserted
Activate the handwheel
Press the Generate NC block key on the handwheel
The control inserts a complete traversing block containing all
axis positions selected through the MOD function.
680
Manual Operation and Setup | Moving the machine axes
HEIDENHAIN | TNC 640 | ISO Programming User's Manual | 10/2017