Assembly Design > Using Assembly > Placing Components > User-Defined Sets > Assembling a Component to a Datum Plane (Translate and Rotate)
  
Assembling a Component to a Datum Plane (Translate and Rotate)
You can assemble a component to a datum plane by using:
An offset datum to translate a component
An angle datum to rotate a component
The assembled components remain fixed relative to the datums, but you can move the datums relative to the assembly using their offset or angle parameters.
The reference datums can belong to an assembly or to a part. If they are assembly datums, their driving parameters appear in the assembly drawings. If they are part datums, they appear only in part drawings.