Piping > Routing > Routing in Non Spec-Driven Piping Mode > Routing to Datum Points > Creating a Datum
  
Creating a Datum
Routing Command
Create Datum Feature
To Pnt/Port
Point, Csys
Extend – Direction
Axis, Csys
Extend – Up To
Plane, Point
Connect
Csys
Set Start
Point, Csys