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Diagram 122: Operations of a push button
In the example displayed above, the switch “Station 3” and the related signal “Station -
Exit 3” are operated by pressing a push button.
An additional feature is system operations. Among others the following system operations
are available:
• Playing of sound files
• Execution of an external program
• Output of a warning tone with the speaker of the computer
• Turning off the power of the digital system
• Emergency stop of all trains
With these system operations, you are able to create, for example, an emergency stop
button in your switchboard.
Operations not only can be executed by push buttons and on-off switches, but also by
other elements such as indicators or routes.
If operations are assigned to contact indicators, then passing trains are able to trigger
other operations automatically. For example, a passing train can open or close certain
crossing gates automatically. Another possibility is playing sound files triggered by
passing trains. Since operations can also contain features of the Dispatcher – e.g. start-
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