[pappurvsa]

I'm using grasshopper to Robodk. I was wondering apart from curves and other geometries, if there is away to import grasshopper planes/frames into robodk?

[Albert]

Do you mean you would like to define a coordinate system from Rhino or Grasshopper?
How is the coordinate system defined in Grasshopper?

You should use the RoboDK API for this purpose. I believe you can insert custom python code in Grasshopper.