Siemens SIMOTION Function Manual page 16

Basics of Path Interpolation
2.1 Path interpolation
The TO Path Object is interconnected with 2 or 3 path axes.
In addition, the TO Path Object can be interconnected with a positioning axis for path-
synchronous motion and with positioning axes for connection to a coordinate. Likewise, it
can be interconnected with a cam.
The TrackingIn interface can be used to interconnect a technology object that provides
motion information with a position (the motion sequence value), such as:
● External encoder
● Positioning axis
Role of the path axis
All single-axis functions can be executed on the path axis without limitations.
Figure 2-3
The path interpolation functionality is independent of the physical axis type. Path
interpolation can be applied to electric axes, hydraulic axes, and stepper motor axes (real
axes) as well as to virtual axes.
Inclusion of path interpolation in technology packages
Figure 2-4
Path functionality is made available in the PATH technology package, which also includes
the functionality of the CAM technology package. The extensions include the TO Path
Interpolation and the TO Path Axis.
Thus, the CAM_EXT technology package also contains these object types.
For additional information, see Motion Control Basic Functions, "Available technology
objects".
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Role of the path axis
Inclusion of path interpolation in technology packages
TO Path Interpolation
Function Manual, 11/2010