HEIDENHAIN POSITIP 880 User Manual page 122

Direct Entry
If known, the encoder's error information may be entered directly.
Press the DIRECT ENTRY soft key. An ERROR INTERVAL form will
open beside the compensation table.
Enter both the measured value and the error at that value in the form
and press the USE soft key.
The table and plotted graph will be updated. Pressing the CANCEL
soft key will close the ERROR INTERVAL form without changing the
information in the compensation table.
Autocalculation
This option allows the operator to use gauge blocks to determine
the compensation factor.
Press the AUTOCALCULATION soft key. The ERROR INTERVAL form
will open. Move the table to the first edge of the gauge block, and
press the START soft key. The MEASURED field will reset to 0.
Move to the second edge of the gauge block. As the table is moved,
the Measured field will show the scale's displacement from the first
edge.
Press the END soft key.
Enter the known gauge block size in the REFERENCE field. If the
block edges were approached from opposite directions, include the
diameter of the tool or feeler gauge stylus in the REFERENCE
VALUE field.
After entering the value, press the USE soft key to close the form.
The system will calculate the compensation factor.
Importing/Exporting Tables
Error compensation table information for each axis can be imported or
exported over the serial port. The tables may also be exported to a
printer over the parallel port.
Press the IMPORT TABLE soft key to download a compensation table
from a PC. This soft key will only be available if the table is empty.
If not empty, press CLEAR TABLE soft key first.
Press the EXPORT TABLE soft key to upload the current compensation
table to a PC. It is only available if the table is not empty.
To exit, error compensation table configuration, press the USE soft
key. The screen will go back to the ERROR COMPENSATION form.
122 II Technical Information