HEIDENHAIN NPD 281 v.3 - Manual (Page 8)

8
You can switch between datums 1 and 2 as desired. Datum 2
can be used, for example, for working with incremental
dimensions.
When you switch back to datum 1, the display unit resumes
display of the MT's actual position.
Datum Setting
The datum setting procedure assigns a display value to a
known position. With the ND 200 series, you can set two
separate datum points.
There are several ways to set the datum:
• Enter a numerical value, or
• Transfer a value from an operating parameter
(see P79, P80), or
• By external signal
Select datum 1 or 2.
After datum setting: Assignment of measured values to positions
Without datum setting: unknown assignment of measured values to
positions
Z
?
?
?
?
?
Z
5˜
0
10˜
15˜
20˜
Enter numerical value (here, 5).
5
Confirm the entered numerical value.
Datum Setting