HEIDENHAIN TNC 320 User Manual page 344

Please note while programming:
Before a cycle definition you must have programmed a
tool call to define the touch probe axis.
The TNC always measures the first line (parallel to the
reference axis) in the direction of the minor axis of the
working plane.
Cycle parameters
U
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
U 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
U
Spacing in 1st axis Q326 (incremental): Distance
between the first and second measuring points in the
reference axis of the working plane. Input range 0 to
99999.9999
U Spacing in 2nd axis Q327 (incremental): Distance
between third and fourth measuring points in the
minor axis of the working plane. Input range 0 to
99999.9999
U
Corner Q308: Number identifying the corner which
the TNC is to set as datum. Input range 1 to 4
U Measuring height in the touch probe axis Q261
(absolute): Coordinate of the ball tip center (= touch
point) in the touch probe axis in which the
measurement is to be made. Input range
-99999.9999 to 99999.9999
U 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
U 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
344 Touch Probe Cycles: Automatic Datum Setting