HEIDENHAIN TNC 640 (34059x-05) Cycle programming User Manual
Page 517

DATUM IN ONE AXIS (Cycle 419, DIN/ISO: G419) 15.13
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TNC 640 | User's Manual Cycle Programming | 1/2015
517
Traverse direction 1 Q267: Direction in which the
probe is to approach the workpiece:
-1
: Negative Traverse direction
+1
: Positive traverse direction
Datum number in table Q305: Enter the number
in the datum or preset table in which the TNC is
to save the coordinate. If Q303=1: If you enter
Q305=0, the TNC automatically sets the display
so that the new datum is on the probed surface. If
Q303=0: If you enter Q305=0, the TNC writes to
line 0 of the datum table. Input range 0 to 99999
New datum Q333 (absolute): Coordinate at which
the TNC should set the datum. Default setting = 0
input range -99999.9999 to 99999.9999
Measured-value transfer (0, 1) Q303: Specify
whether the determined datum is to be saved in the
datum table or in the preset table:
-1
: Do not use! Is entered by the TNC when old
0
: Write determined datum in the active datum
table. The reference system is the active workpiece
coordinate system
1
: Write the measured datum into the preset table.
The reference system is the machine coordinate
system (REF system).