You can construct a plane through the current origin and parallel to the current workplane. (Input features do not need to be provided.)
To construct an alignment plane:
Access the Construct Plane dialog box (Insert | Feature | Constructed | Plane).
Select the Alignment option.
Do not select any features.
Click the Create button.
The Edit window command line for this option would read:
CONSTR/PLANE,ALIGN
A - Plane constructed parallel
to the top (XY+Z) workplane and through the origin
B - Origin (0,0,0)
C - Current workplane
Constructing a plane from an alignment