Touch Probe Cycles: Automatic Datum Setting
14.11 DATUM IN TOUCH PROBE AXIS (Cycle 417, DIN/ISO: G417)
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HEIDENHAIN | TNC 320 | User’s manual for cycle programming | 9/2016
Cycle parameters
Q263 1st measuring point in 1st axis? (absolute):
Coordinate of the first touch point in the reference
axis of the working plane. Input range -99999.9999
to 99999.9999
Q264 1st measuring point in 2nd axis? (absolute):
Coordinate of the first touch point in the minor axis
of the working plane. Input range -99999.9999 to
99999.9999
Q294 1st measuring point in 3rd axis? (absolute):
Coordinate of the first touch point in the touch probe
axis. Input range -99999.9999 to 99999.9999
Q320 Set-up clearance? (incremental): Additional
distance between measuring point and ball tip.
Q320 is added to SET_UP in the touch probe table.
Input range 0 to 99999.9999
Q260 Clearance height? (absolute): coordinate in
the touch probe axis at which no collision between
tool and workpiece (fixtures) can occur. Input range
-99999.9999 to 99999.9999
Q305 Number in table?: Enter the number in the
datum/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
Q333 New datum in TS axis? (absolute): Coordinate
at which the TNC should set the datum. Default
setting = 0. Input range -99999.9999 to 99999.9999
Q303 Meas. value transfer (0,1)?: Specify whether
the determined reference point is to be saved in the
datum table or in the preset table:
–1: Do not use! Is entered by the TNC when old
programs are read in (see "Characteristics common
to all touch probe cycles for datum setting",
page 326)
0: Write the measured datum into 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).
NC blocks
5 TCH PROBE 417 DATUM IN TS AXIS
Q263=+25 ;1ST POINT 1ST AXIS
Q264=+25 ;1ST POINT 2ND AXIS
Q294=+25 ;1ST POINT 3RD AXIS
Q320=0 ;SET-UP CLEARANCE
Q260=+50 ;CLEARANCE HEIGHT
Q305=0 ;NUMBER IN TABLE
Q333=+0 ;DATUM
Q303=+1 ;MEAS. VALUE
TRANSFER
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