Absolute And Incremental Dimensions - Siemens SINUMERIK 840D sl Operating Manual

7.4.3

Absolute and incremental dimensions

When generating a machining step program, you can input positions in absolute or
incremental dimensions, depending on how the workpiece drawing is dimensioned.
You can also use a combination of absolute and incremental dimensions, i.e. one coordinate
as an absolute dimension and the other as an incremental dimension.
For the face axis (the X axis, in this case), in the machine data it is established whether the
diameter or radius is programmed in absolute or incremental dimensions.
Please refer to the machine manufacturer's specifications.
Absolute dimensions (ABS)
With absolute dimensions, all position specifications refer to the zero point of the active
coordinate system.
Figure 7-7
The position specifications for the points P1 to P4 in absolute dimensions refer to the zero
point:
P1: X25 Z-7.5
P2: X40 Z-15
P3: X40 Z-25
P4: X60 Z-35
Turning
Operating Manual, 02/2012, 6FC5398-8CP40-3BA0
Absolute dimensions
Creating a ShopTurn program
7.4 Fundamentals
231