HEIDENHAIN TNC 640 (34059x-05) ISO programming - Manual (Page 508)

Manual operation and setup
15.6 Datum setting without a 3-D touch probe
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TNC 640 | User's ManualDIN/ISO Programming | 1/2015
Using touch probe functions with mechanical
probes or measuring dials
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, see page 509.
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:
Select any touch probe function by soft key
Move the mechanical probe to the first position to
be captured by the TNC
Confirm the position: Press the actual-position-
capture soft key for the TNC to save the current
position
Move the mechanical probe to the next position to
be captured by the TNC
Confirm the position: Press the actual-position-
capture soft key for the TNC to save the current
position
If required, move to additional positions and
capture as described previously
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 measured values from the touch
probe cycles in a datum table", page 515, or see
"Writing measured values from the touch probe
cycles in the preset table", page 516)
Terminate the probing function: Press the
END key