HEIDENHAIN TNC 620 (81760x-01) - Manual (Page 460)

Manual operation and setup
14.5 Datum setting without a 3-D touch probe
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TNC 620 | User's Manual
HEIDENHAIN Conversational Programming | 3/2014
Manually saving the datums in the preset table
In order to set datums in the preset table, proceed as follows:
Select the MANUAL OPERATION mode
Move the tool slowly until it touches (scratches)
the workpiece surface, or position the measuring
dial correspondingly
Display the preset table: The TNC opens the
preset table and sets the cursor to the active table
row
Select functions for entering the presets: The TNC
displays the available possibilities for entry in the
soft-key row. See the table below for a description
of the entry possibilities
Select the line in the preset table that you want to
change (the line number is the preset number)
If needed, select the column (axis) in the preset
table that you want to change
Use the soft keys to select one of the available
entry possibilities (see the following table)
Function Soft key
Directly transfer the actual position of the
tool (the measuring dial) as the new datum:
This function only saves the datum in the axis
which is currently highlighted
Assign any value to the actual position of the
tool (the measuring dial): This function only
saves the datum in the axis which is currently
highlighted. Enter the desired value in the pop-
up window
Incrementally shift a datum already stored in
the table: This function only saves the datum
in the axis which is currently highlighted. Enter
the desired corrective value with the correct
sign in the pop-up window. If inch display is
active: Enter the value in inches, and the TNC
will internally convert the entered values to
mm