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Entering
compensation
values
654
Enter the compensation values into the *.COM tables:
Ascertain the error trace with a comparator measuring system.
To create a compensation-value table: Press the MOD key and enter the
code number 807667; for each axis that is to be compensated for, use the
program manager to create a compensation-value table with the name
*.COM.
Using soft keys (e.g. 1 OFF/ON), activate columns in the compensation value
table only for the axes whose positions affect the error of the compensated
axis.
Begin your entry with the soft key HEAD LINE: Enter the datum for the
compensation values as a distance from the machine datum (MP960.x).
Enter a value for the spacing of the compensation points as a power to the
base of 2. The input value is ±999.999999 (six decimal places, 1 nm).
Exit the header by pressing END.
With the soft key APPEND N LINES, enter the number of compensation
points:
• Up to 4000 lines
• Maximum of 24 columns in all active compensation value tables
• Total maximum of 24 ⋅ 4000 = 96000 compensation points
To enter compensation values: Enter only the break points of the error trace.
The iTNC interpolates linearly between the break points.
If another *.COM file is to be used for the negative direction of traverse, the
file name must end with a minus character (–). The difference between two
direction-sensitive compensation-value tables is corrected immediately at a
reversal of direction.
Example:
Entry in the *.CMA file: Axis_X. The compensation value table Axis_X.COM is
used. If the compensation value table Axis_X–.COM exists, it will be used for
the negative traverse direction.
HEIDENHAIN Technical Manual iTNC 530 HSCI
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