16
Setup mode
3.
Press {
auto
}.
The message ‘Homing...’ appears on the screen, and the DP900
automatically finds the Starting Point.
4.
Press the slider bar next to the axis you are calibrating.
The message ‘Set MC Ref.’ appears on the screen.
5.
Press {
Set
} to set the MC Ref.
The DP900 displays the Observed Value (linear encoder position)
and True Value (laser interferometer position) for the first segment.
Move the axis to the end of the first segment. The observed value is
updated to reflect this movement.
6.
Use the down navigation key to select the True Value, and enter the
value shown on the laser interferometer.
7.
When you press the [
enter
] key the compensation value is calculated
and displayed.
8.
Use
to move to the next segment.
9.
Repeat the procedure for each segment.
10.
Press
to save the values and leave the Calibrate Axis set
up.
11.
Press
to leave the Calibrate Axis set up without saving the
values.
Edit
1.
Set the axis to Segmented Compensation as described in Calibrate
axis on page 14.
2.
Press {
edit
}.
3.
Use the
and
to move to the segment number that you want
to edit.
4.
Press {
edit
}.
5.
Enter a value for the Observed Value.
6.
Enter a value for the True Value.
7.
Press
or
to return to the previous screen.
8.
Repeat the procedure for all the segments.
9.
When you have entered values for all the segments, press
to
save your entries and leave the Calibrate Axis setup.
You can define up to 99 segments per axis.
To use Segmented Error Compensation, you need to have a high
accuracy standard, such as a laser interferometer system.
Segmented Error Compensation initially defaults to Off, with no points set.
If you set Apply Compensation to none after you have set the Correction
Points, then the data is retained, but not applied. When you next set Apply
Compensation to s.comp, the data is re-applied.
You must carry out this procedure in strict sequence, and in full, for it to be
valid.
Do not worry about the direction of the standard measurement. For
example, 678.9 and -678.9 are treated the same.
You can press the [
ce
] key to clear an entry.
