Brian: Certainly, Stan has answered how to tie your elevator to the DCS system. The AIU can handle switching between levels from your remote.
Now the trick is to have the elevator differentiate between the levels and stop at the proper location. I can see how the turntable technique came to mind as a solution for this. But I doubt that you'll find anything suitable off the shelf to do the job. So, what do you plan to do?
What you have done so far makes me think that you are capable of putting things together on your own. Are you comfortable with working on electronics (small parts, soldering, wire, microcontrollers, etc.) to create your own indexing system? If so, I think that the people on this Forum can lend a hand to get you there.
