hi Oleg Chutko,
why is not my create sub vi option active? i tried to convert one of my vi to sub vi? but i did not success. i want to put simple terminal vi into my ykpa01vi as a sub vi.
The thread you responded to is 10 years old.
You're confused on the subVI concept. You just need to drag the icon of terminal.vi and drop it onto the block diagram of ykpa.vi.
Create SubVI function is to take a part of a main diagram, select it, then make a subVI out of that. Read up on tutorials for more info...