HEIDENHAIN TNC 410 - Manual (Page 107)

94 6 Programming: Programming Contours
Direct data on a circular arc Soft key
X coordinate of the arc end point
Y coordinate of the arc end point
Polar coordinate radius
Polar coordinate angle
Rotational direction of the arc
Radius of the arc
Angle of the leading axis to the
arc end point
6.6 P
ath Cont
ours — FK F
ree Cont
our Pr
ogr
amming
Free programming of straight lines
ú To display the soft keys for free contour programming,
press the FK key
ú To initiate the dialog for free programming of straight
lines, press the FL soft key. The TNC displays additio-
nal soft keys — see table at right.
ú 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 are
entered. If the entered data describe several
solutions, the graphic will display the contour element
in green. See ”Graphics during FK programming.”
See next page for the resulting NC blocks.
Straight line with tangential connection
If the straight line connects tangentially to another contour
element, initiate the dialog with the FLT soft key:
ú To display the soft keys for free contour programming,
press the FK key
ú To initiate the dialog, press the FLT soft key.
ú Use the soft keys (listed in the table at above right) to
enter all known data in the block.
Free programming of circular arcs
ú To display the soft keys for free contour programming,
press the FK key
ú To initiate the dialog for free programming of circular
arcs, press the FC soft key. The TNC displays soft keys
with which you can enter direct data on the circular arc
or data on the circle center — see table at right.
ú 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 are
entered. If the entered data describe several
solutions, the graphic will display the contour element
in green (see “Graphics during FK programming”).
Circular arc with tangential connection
If the circular arc connects tangentially to another contour element,
initiate the dialog with the FCT soft key:
ú To display the soft keys for free contour programming,
press the FK key
ú To initiate the dialog, press the FCT soft key.
ú Use the soft keys (listed in the table at right) to enter
all known data in the block.
Known data Soft key
X coordinate of the straight-line end point
Y coordinate of the straight-line end point
Polar coordinate radius
Polar coordinate angle
Length of a straight line
Gradient angle of a straight line
Beginning or end of a closed contour
For data that are based on other blocks see “Relati-
ve data,” for auxiliary points see “Auxiliary points” in
this section.