@cdswindell posted:I have no experience with DCS. I'm assuming this is what MTA uses? I think I remember hearing somewhere that MTH was very proprietary and actually went after someone that tried to reverse engineer their protocol. I don't have any of their equipment, nor any of their engines, so at least for the time being, i'm not gonna take that on.
Mark DiVecchio has done a lot of work with DCS and has decoded their protocol very well. Check out his RTC page: http://www.silogic.com/trains/RTC_Running.html
This is a pretty impressive program and he does it all via the WiFi. He has extensive information on the actual protocol to talk to the DCS as well.