HEIDENHAIN TNC 640 (34059x-01) - Manual (Page 217)

HEIDENHAIN TNC 640 217
6.6 P
a
th Cont
ours—FK F
ree Cont
our Pr
ogr
a
mming
Free programming of circular arcs
Circular arc without tangential connection
U To display the soft keys for free contour programming,
press the FK key
U To initiate the dialog for free programming of circular
arcs, press the FC soft key. The TNC displays soft
keys with which you can directly enter data on the
circular arc or the circle center
U Enter all known data in the block by using these soft
keys. The FK graphic displays the programmed
contour element in red until sufficient data is entered.
If the entered data describes several solutions, the
graphic will display the contour element in green (see
"Graphics during FK programming", page 214)
Circular arc with tangential connection
If the circular arc connects tangentially to another contour element,
initiate the dialog with the FCT soft key:
U To display the soft keys for free contour programming,
press the FK key
U To initiate the dialog, press the FCT soft key
U Enter all known data in the block by using the soft
keys