HEIDENHAIN TNC 640 (34059x-02) Cycle programming - Manual (Page 456)

Touch Probe Cycles: Automatic Datum Setting
16.11 DATUM IN TOUCH PROBE AXIS (Cycle 417, DIN/ISO: G417)
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TNC 640 | User's Manual Cycle Programming | 5/2013
Cycle parameters
1st meas. point 1st axis Q263 (absolute):
Coordinate of the first touch point in the reference
axis of the working plane. Input range -99999.9999
to 99999.9999
1st meas. point 2nd axis Q264 (absolute):
Coordinate of the first touch point in the minor axis
of the working plane. Input range -99999.9999 to
99999.9999
1st meas. point 3rd axis Q294 (absolute):
Coordinate of the first touch point in the touch probe
axis. Input range -99999.9999 to 99999.9999
Set-up clearance Q320 (incremental): Additional
distance between measuring point and ball tip.
Q320 is added to
SET_UP (touch probe table). Input
range 0 to 99999.9999
Clearance height Q260 (absolute): Coordinate in
the touch probe axis at which no collision between
touch probe and workpiece (fixtures) can occur.
Input range -99999.9999 to 99999.9999
Datum number in table Q305: Enter the number
in the datum or preset table in which the TNC is
to save the coordinate. If you enter Q305=0, the
TNC automatically sets the display so that the new
datum is on the probed surface. Input range 0 to
2999
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
programs are read in (See "Characteristics common
to all touch probe cycles for datum setting")
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).
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 ;NO. IN TABLE
Q333=+0 ;DATUM
Q303=+1 ;MEAS. VALUE
TRANSFER