In the ‘Functions’ tab of the properties window of an engine we can define the functions that the digital decoder that is built into the engine supports. Often these are things like headlight, cabin light, shunt speed, or, in case of a sound decoder also several sounds that can be triggered independently.
With TC 9 it is possible to not only add decoder functions … also a list of operations can be created that will execute once the function button is pressed. The operations are similar to the ones we can use in the Operations tab of elements like switches, signals, flagman, etc.
One of the many possibilities this new option gives us is to play a sound that is stored on our computer. This way a sound decoder can be simulated, as far as horns and whistles and speaker messages are concerned.
Another new option in TC 9 is a Train Operation called Short Distance Move. With this operation a number of cm / inches can be specified and when activated the train will drive that distance at crawl speed. This can be handy for instance to move an engine just enough to couple onto wagons, or to move to a decoupler position on the track.