HEIDENHAIN TNC 128 (77184x-01) - Manual (Page 466)

466 Touch probe cycles
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Touch trigger probe, probing feed rate: F in
touch probe table
In F you define the feed rate at which the TNC is to probe the
workpiece.
Touch trigger probe, rapid traverse for
positioning: FMAX
In FMAX you define the feed rate at which the TNC pre-positions the
touch probe, or positions it between measuring points.
Touch trigger probe, rapid traverse for
positioning: F_PREPOS in touch probe table
In F_PREPOS you define whether the TNC is to position the touch probe
at the feed rate defined in FMAX or at rapid traverse.
 Input value = FMAX_PROBE: Position at feed rate from FMAX
 Input value = FMAX_MACHINE: Pre-position at rapid traverse
Executing touch probe cycles
All touch probe cycles are DEF active. This means that the TNC runs
the cycle automatically as soon as the TNC executes the cycle
definition in the program run.
Touch probe cycles with a number greater than 400 position the touch
probe according to a positioning logic:
 If the current coordinate of the south pole of the stylus is less than
the coordinate of the clearance height (defined in the cycle), the TNC
retracts the touch probe in the probe axis to the clearance height
and then positions it in the working plane to the first starting
position.
 If the current coordinate of the south pole of the stylus is greater
than the coordinate of the clearance height, the TNC first positions
the probe in the working plane to the first starting position and then
moves it immediately to the measuring height in the touch probe
axis.
Y
X
Z
F
FMAX
Danger of collision!
When running touch probe cycles, Cycle 8 MIRROR
IMAGE, Cycle 11 SCALING and Cycle 26 AXIS-SPECIFIC
SCALING must not be active.