HEIDENHAIN ND 287 User Manual - Manual (Page 30)

30
I Working with the ND 287 position display unit
I – 4 J
o
b Set
u
p
I – 4 Job Setup
Operating modes
The ND 287 has two operating modes: Actual Value and Distance-
To-Go.
In the Actual Value operating mode, the ND 287 always displays the
current actual position of the length gauge, relative to the active
datum. In this mode, all moves are done by traveling until the display
matches the nominal position that is required.
The Distance-To-Go feature enables you to approach nominal
positions simply by traversing to display value zero. Proceed as
follows:
 Press the DELTA MODE ON soft key to switch the operating mode
(see "Soft-key functions on the standard screen" on page 25): The
display value is zero.
 Use the numeric keys to enter the nominal position you want to
move to and confirm with the ENTER key: The distance-to-go is
displayed.
 Traverse the axis until the display value is zero.

If required, enter the next nominal position and confirm with the
ENTER key: Traverse the axis until the display value is zero.
 To leave the Distance-To-Go operating mode: Press the DELTA
MODE OFF soft key.
Fig. I.19 Actual Value symbol (highlighted) in the
status display
Status bar Function
Shows current actual position
Displays current distance from the
nominal position
Algebraic sign of distance-to-go:
 The distance-to-go has a positive sign if the axis
direction from the actual towards the nominal position is
negative.
 The distance-to-go has a negative sign if the axis
direction from the actual towards the nominal position is
positive.
In the Distance-To-Go operating mode, the switching
outputs A1 (pin 15) and A2 (pin 16) have a different
function
(see "Switching outputs at D-sub connection
X41" on page 95).