Patran coordinate frames will generate the ANSYS LOCAL and NROTAT commands for nodes which are assigned an analysis coordinate frame. Analysis coordinate frames can be specified when nodes are created or modified, and when assigning a displacement boundary condition with an analysis coordinate frame. All ANSYS nodes will reference the global analysis coordinate frame unless
otherwise specified.

Rectangular, Cylindrical, or Spherical coordinate frames may be created. The origin and rotation angles of the new coordinate frames are used in the LOCAL command. Due to ANSYS coordinate frame numbering requirements, 10 will be added to the Patran coordinate frame ID when it is translated to the ANSYS input deck.

For more information see Creating Coordinate Frames (p. 393) in the Geometry Modeling - Reference Manual Part 2.