HEIDENHAIN NC 124 - Manual (Page 15)

1 Fundamentals of Positioning
TNC 124 15
Y
X
+45°
+180°
–180°
–270°
Fig. 1.11: Angle and the angle reference
axis, here in the X / Y plane
Angular positions
For angular positions, the following reference axes are defined:
Plane Angle reference axis
X / Y + X
Y / Z + Y
Z / X + Z
Algebraic sign for direction of rotation
Positive direction of rotation is counterclockwise if the working plane
is viewed in negative tool axis direction (see Fig. 1.11).
Example: Angle in the working plane X / Y
Angle Corresponds to the ...
+ 45° ... bisecting line between +X and +Y
± 180° ... negative X axis
– 270° ... positive Y axis