A set of predefined CPLs are provided for the XY and ZX environments.
This diagram shows the relationship between the CPL axes for the XY environment and the World axes. The name of each CPL is shown.
The next diagram
shows the relationship of the standard CPLs to each view of the part.
Note that:
The origin of each standard CPL coincides with the World origin
The ‘top’ CPL is the only one where the CPL axes coincide exactly with the World axes.
If you need to add a feature, such as a slot, into the bottom of the part
you can select the ‘bottom’ CPL and work in terms of the dimensions you
have without worrying about how they map back to the World axes.
Command modifier values for co-ordinates or angles of rotation are always given with respect to the current CPL.
Explicit co-ordinate data can be given with respect to either the current CPL or the World co-ordinate system. See ‘Specify explicit co-ordinates’ in the section ‘Entering co-ordinate data and selecting entities’.
The following diagram shows the standard CPLs for the ZX environment using a ‘swept’ profile.