8 d a tum set ting with 3-d t o uc h pr obe – HEIDENHAIN TNC 620 (340 56x-02) ISO programming User Manual
Page 345

HEIDENHAIN TNC 620
345
12.8 D
a
tum Set
ting with 3-D T
o
uc
h Pr
obe
Using the touch probe functions with 
mechanical probes or dial gauges
If you do not have an electronic 3-D touch probe on your machine, you 
can also use all the previously described manual touch probe functions 
(exception: calibration function) with mechanical probes or by simply 
touching the workpiece with the tool.
In place of the electronic signal generated automatically by a 3-D touch 
probe during probing, you can manually initiate the trigger signal for 
capturing the probing position by pressing a key. Proceed as follows:
U
Select any touch probe function by soft key
U
Move the mechanical probe to the first position to be
captured by the TNC.
U
Confirm the position: Press the
actual-position-capture soft key for the TNC to save 
the current position.
U
Move the mechanical probe to the next position to be
captured by the TNC
U
Confirm the position: Press the actual-position-
capture soft key for the TNC to save the current 
position.
U
If required, move to additional positions and capture
as described previously
U
Datum:
In the menu window, enter the coordinates of
the new datum, confirm with the SET DATUM soft 
key, or write the values to a table (see "Writing the 
measured values from touch probe cycles in datum 
tables", page 332, or see "Writing the measured 
values from touch probe cycles in the preset table", 
page 333)
U
To terminate the probe function, press the END key
