HEIDENHAIN TNC 620 User Manual page 830

20
Function
Effect of Q parameters
Automatic cancelation of tool radius
compensation
NC blocks with M91
Behavior with M120 LA1
Block scan in a point table
Emtpy CC block (pole adoption from
last tool position) in the NC program
Axis-specific scaling of RND block
Reaction if a contour element with
length 0 is defined before or after a
RND or CHF block
830
Tables and Overviews | Functions of the TNC 620 and the iTNC 530 compared
TNC 620
Q60 to Q99 (QS60 to QS99) areal-
ways local.
Block with R0
DEP block
Program selection
END PGM
No consideration of tool radius
compensation
No effect on processing, as the
control interprets the input internal-
ly as an LA0
The tool is positioned above the
next position to be machined
Last positioning block in the
working plane must contain both
coordinates of the working plane
RND block is scaled, the result is
an ellipse
Error message is issued
HEIDENHAIN | TNC 620 | Conversational Programming User's Manual | 10/2017
iTNC 530
Q60 to Q99 (QS60 to QS99)
are local or global, depending
on MP7251 in converted cycle
programs (.cyc). Nested calls may
cause problems
Block with R0
DEP block
Program selection
Programming of Cycle 10
ROTATION
PGM CALL
Consideration of tool radius
compensation
Possible undesired effect on
processing, as the control inter-
prets the entry internally as an LA2
The tool is positioned above
the last position that has been
completely machined
Last positioning block in the
working plane does not necessari-
ly need to contain both coordinates
of the working plane. Can cause
problems with RND or CHF blocks
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