Distance-To-Go Mode - HEIDENHAIN ND 282B User Manual

Distance-to-Go Display Mode
Normally, the display shows the actual position of the en-
coder. However, it is often more helpful to display the re-
maining distance to an entered nominal position—especially
when you are using the display unit for machine tools and au-
tomation purposes. You can then position simply by traversing
to display value zero.
You can access the distance-to-go display by entering the
code number 24 65 82.
Display
DELTA ON
DELTA OFF
" Traversing to zero" with distance-to-go display
ä
Select datum point 2.
ä
Enter the nominal position.
➤ Move the axis until the display value is zero.
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Meaning
Distance-to-go display active
Distance-to-go display not active
Function of switching outputs A1 and A2
In the distance-to-go mode, switching outputs A1 (pin 15) and
A2 (pin 16) have a different function: they are symmetrical to
the display value zero. For example, if a switching point of
10 mm is entered in P62, output A1 switches at both +10 mm
and –10 mm. The figure below shows output signal A1 when
approaching zero from the negative direction.
t
d1
Time curve of a signal for switching limit (A1) = 10 mm,
£ £
t 30 ms, t 180 ms
d1 d2
Path
t
d2