HEIDENHAIN TNC 640 (34059x-04) Cycle programming - Manual (Page 519)

MEASURE COORDINATE (Cycle 427, DIN/ISO: G427) 17.11
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TNC 640 | User's Manual Cycle Programming | 3/2014
519
17.11 MEASURE COORDINATE (Cycle 427,
DIN/ISO: G427)
Cycle run
Touch Probe Cycle 427 finds a coordinate in a selectable axis
and saves the value in a system parameter. If you define the
corresponding tolerance values in the cycle, the TNC makes a
nominal-to-actual value comparison and saves the deviation value in
system parameters.
1 Following the positioning logic, the TNC positions the touch
probe at rapid traverse (value from
FMAX column) (see
"Executing touch probe cycles", page 410) to touch point 1 .
The TNC offsets the touch probe by the safety clearance in the
direction opposite to the defined traverse direction.
2 Then the TNC positions the touch probe to the entered touch
point 1 in the working plane and measures the actual value in
the selected axis.
3 Finally the TNC returns the touch probe to the clearance
height and saves the measured coordinate in the following Q
parameter.
Parameter number Meaning
Q160 Measured coordinate
Please note while programming:
Before a cycle definition you must have programmed
a tool call to define the touch probe axis.