Jon, thanks for the code information. Although all of them didn't work, I was able to get 2 of yours too, as well as another from one of the projector discretes listed on this website. However, I still couldn't get the discrete on/off to work. I am listing the codes that worked below.
If you have any thoughts or know how to tweak the on/off discretes with that information known, could you lend me a hand one more time? Any help would be greatly appreciated.