HEIDENHAIN TNC 620 (73498x-02) ISO programming - Manual (Page 426)

Manual operation and setup
14.9 Datum Setting with 3-D Touch Probe (Touch Probe Function
Software Option)
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TNC 620 | User's Manual for DIN/ISO Programming | 5/2013
Corner as datum
Select the touch probe function: Press the
PROBING P soft key
Position the touch probe near the first touch point
on the first workpiece edge
Select the probe direction by soft key
Start the probing procedure: Press the machine
START button
Position the touch probe near the second touch
point on the same workpiece edge
Start the probing procedure: Press the machine
START button
Position the touch probe near the first touch point
on the second workpiece edge
Select the probe direction by soft key
Start the probing procedure: Press the machine
START button
Position the touch probe near the second touch
point on the same workpiece edge
Start the probing procedure: Press the machine
START button
Datum: Enter both datum coordinates into the
menu window, and confirm your entry with the
SET DATUM soft key, or See "Writing measured
values from the touch probe cycles in the preset
table", page 416
To terminate the probe function, press the END
soft key
HEIDENHAIN only gives warranty for the function of
the probing cycles if HEIDENHAIN touch probes are
used.
You can identify the intersection of two straight lines
by holes or studs and set this as the datum. For each
straight line however, probing must only be with two
identical touch probe functions (e.g. two holes).