HEIDENHAIN POSITIP 880 User Manual page 88

Datum table (milling only)
The datum table shows the absolute locations of the datums relative
to the reference mark. Normally the datums are set using the datum
and probe functions in actual value mode. It is also possible to set the
datum values directly if necessary. See Fig. I.64.
Press the arrow keys to cursor to the datum you need and press ENT.
The datum description form will appear.
Use numeric keys to enter the desired values and press ENT for each
axis. The values are measured from the reference marks.
When you have finished entering values, press the USE soft key.
Resetting the datum table:
Press the RESET ALL DATUMS soft key to reset all axis values in the
datum table.
Datum number 0 may be protected to prevent it from
being changed. Refer to II-2 Installation Setup.
Display configuration
The DISPLAY CONFIGURATION form is where the operator
determines which axes are displayed and in what order. The DRO
display may have 1 or 2 independent configurations.
Press the NEXT AXIS soft key to toggle through the available axes.
Press the CE key to turn off the axis display.
The form is closed by pressing the CANCEL or USE soft keys.
The factory default configuration for DRO 1 is 1st = X, 2nd = Y, and
3rd = Z. The 4th, 5th, and 6th displays are OFF. The default for
DRO2 is all displays OFF.
When more than 1 configuration is available, the DRO VIEW soft key
is used to toggle between DRO1 and DRO2. The current setting is
shown on the soft key. On power up, the DRO display defaults to
DRO1.
Scale factor
The scale factor may be used to scale the part up or down from the
programmed size. All displayed values are multiplied by the scale
factor. Tool radius offsetting is not affected. A scale factor of 1.0 is
used to create a part with the exact size as dimensioned on the print.
See Fig. I.65.
The numeric keys are used to enter a number greater than zero. The
range is 0.1000 to 10.000.
The scale factor settings will be retained on a power cycle. First-time
power-up default setting is OFF with a value of 1.0000.
When the scale factor is a value other than 1, the scaling symbol
is shown on the axis display.
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Fig. I.64 Datum table in milling
Fig. I.65 Scale factor
I Operating Instructions