HEIDENHAIN TNC 620 (81760x-02) - Manual (Page 647)

Functions of the TNC 620 and the iTNC 530 compared 18.5
18
TNC 620 | User's Manual
HEIDENHAIN Conversational Programming | 2/2015 647
Function TNC 620 iTNC 530
Effect of Q parameters Q60 to Q99 (or QS60 to QS99) are
always local
Q60 to Q99 (or QS60 to QS99)
are local or global, depending
on MP7251 in converted cycle
programs (.cyc). Nested calls may
cause problems
Automatic cancelation of tool
radius compensation
Block with R0
DEP block
END PGM
Block with R0
DEP block
PGM CALL
Programming of Cycle 10
ROTATION
Program selection
NC blocks with M91 No consideration of tool radius
compensation
Consideration of tool radius
compensation
Tool shape compensation Tool shape compensation is not
supported, because this type of
programming is considered to be
axis-value programming, and the
basic assumption is that axes do
not form a Cartesian coordinate
system
Tool shape compensation is
supported
Mid-program startup in a point
table
The tool is positioned above the
next position to be machined
The tool is positioned above
the last position that has been
completely machined
Empty CC block (pole of last tool
position is used) in NC program
Last positioning block in the
working plane must contain both
coordinates of the working plane
Last positioning block in
the working plane does not
necessarily need to contain both
coordinates of the working plane.
Can cause problems with
RND or
CHF blocks
Axis-specific scaling of RND block RND block is scaled, the result is
an ellipse
Error message is issued
Reaction if a contour element with
length 0 is defined before or after
a
RND or CHF block
Error message is issued Error message is issued if a
contour element with length 0 is
located before the
RND or CHF
block
Contour element with length 0
is ignored if the contour element
with length 0 is located after the
RND or CHF block