HEIDENHAIN CNC Pilot 4290 - Manual (Page 19)

7 HEIDENHAIN CNC PILOT 4290
Absolute coordinates
If the coordinates of a position are referenced to the workpiece zero
point, they are referred to as absolute coordinates. Each position on a
workpiece is clearly defined by its absolute coordinates.
1.4 Fundamentals
Axis designations
The cross slide is referred to as the X-axis and the saddle as the Z-
axis.
All X-axis values that are displayed or entered are regarded as
diameters. In TURN PLUS you can define whether the X-axis values
are to be interpreted as diameters or radii.
Lathes with Y-axis: The Y-axis is perpendicular to the X-axis and Z-axis
(Cartesian system).
When programming paths of traverse, remember to:
■ Program a positive value to depart the workpiece.
■ Program a negative value to approach the workpiece.
Coordinate system
The coordinates entered for the principal axes X, Y and Z are
referenced to the workpiece zero point – exceptions to this rule will be
indicated.
Angles entered for the C-axis are referenced to the ”zero point of the
C-axis” (precondition: the C-axis has been configured as a principal
axis).
1
.4 F
undamentals