HEIDENHAIN TNC 620 Programming Station, User Manual

Page: 679 / 695

Functions of the TNC 620 and the iTNC 530 compared 18.5
18
HEIDENHAIN | TNC 620 | ISO Programming User's Manual | 9/2016
679
Function TNC 620 iTNC 530
Effect of Q parameters
Q60
to
Q99
(
QS60
to
QS99
)
arealways local.
Q60
to
Q99
(
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
Program selection
END PGM
Block with
R0
DEP
block
Program selection
Programming of G73
ROTATION
PGM CALL
NC blocks with
M91
No consideration of tool radius
compensation Consideration of tool radius
compensation
Behavior with
M120 LA1
No effect on processing, as
the control interprets the input
internally as an
LA0
Possible undesired effect on
processing, as the control
interprets the entry internally as an
LA2
Block scan 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
Emtpy
CC
block (pole adoption
from last tool position) in the 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