HEIDENHAIN ND 760 E - Manual (Page 10)

10
Nominal position, actual position and distance-to-go
The position to which the tool is to move is called the nominal position
(
S ). The position at which the tool is actually located at any given
moment is called the actual position ( I ).
The distance from the nominal position to the actual position is called the
distance-to-go (
R
).
Sign for distance-to-go
When you are using the distance-to-go display, the nominal position
becomes the relative datum (display value 0). The distance-to-go is
therefore negative when you move in the positive axis direction, and
positive when you move in the negative axis direction.
Fundamentals
Y
X
Z
I
S
R
Bateil1.pm6 21.01.2002, 09:39 10