PC based train control
All train activity is computer controlled, I use Railware's Windows based program, which allows me to run them manually, or full automatically, or a flexible mixture of both. In the beginning is used the 6021 CU (Central Unit) by Märklin, and the Interface is Märklin's 6051, but I reached it's limitations very quickly, and purchased a the "IB" made by Uhlenbrock.
With Märklin's feed back modules 6088s the computer is continually being informed of where each train is, so it can control speed, track route, signals for each train individually. Since the Märklin Interface 6051 is to slow for the demand of feed back needed to run all trains, I have added the Railware direct-touch modules. The Direct S88 is connected to the Parallel port, and transmits to the PC with 19200 Bps.