HEIDENHAIN TNC 128 (77184x-02) - Manual (Page 311)

Datum setting with 3-D touch probe (Touch Probe Functions
software option 17)
11.7
11
TNC 128 | User's Manual HEIDENHAIN Conversational Programming | 5/2014
311
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.
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 298, or see
"Writing measured values from the touch probe
cycles in the preset table", page 299)
Terminate the probing function: Press the END key