As you're coding industrial controls yourself, you should know how to write down a proper job description (or learn the basics of C in a heartbeat, which would likely be enough to make the modifications you need). Without that, there's no way anyone can help do the programming. I for one am interested in this but without the information I asked for there's no way to tell whether I can do it, or whether it can be done at all.
But maybe I'm wrong in assuming that industrial job descriptions actually are highly detailed and unambiguous.