Tried to export a heightfield of a terrain in greyscale using cop2net and sop import but it's not working, any idea?

On the Sop Import turn on Remap Range.

-b

In the meantime I did set planes from sop, I now can see the individual elements but I have no clue how to get them out, and how to get the full terrain heightfield, like the combined heightfield (which I can't see anywhere)?
Years in World Machine, I need one file with the full heightfield to import in world machine or vue or terragen…
Yes i appreciate the separate elements as well (for material distribution) but I need the famous “heightfield”, the one you would see when you gogle heightfield.
What you see below is far as I could get:

Make a Rop File Output node after the SOP Import node.

-b