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X
Hot Key Operations
Push Button ‘S’
On Power Off (System Operation)
Off -
Table 6: Emergency Stop Button
When the push button is pressed, either by clicking to it with the mouse or by pressing
the ‘S’ on the computer keyboard, then the complete model railroad is stopped.
12.4 Semi-Automatic Control Mechanisms using Flagman Elements
The Flagman
With the possibilities described in the previous sections, it is already possible to create
many and diverse semi-automatic control mechanisms. Even much more powerful functions
are provided by the flagman indicators introduced in this section. This will be
made clearer by the examples provided in this section. Flagman indicators work like intelligent
relays that are turned on under certain conditions. Flagmen are able to indicate
certain events and to execute operations automatically.
Flagman indicators are somewhat similar to contact indicators. While a contact indicator
indicates if a certain feedback sensor is activated or not, a flagman indicates that a
certain more complex event has occurred. A flagman is able, for example, to indicate
that a train is waiting in front of a red signal. The event to monitor this is assigned to
each flagman is a trigger. A trigger contains a set of elements whose states are to be
monitored. In the example mentioned above, the trigger would contain the red signal
and a contact indicator that monitors the track section in front of the signal. When the
signal is red and a train touches the contact indicator, then the flagman is turned on by
its trigger.
A trigger is specified by selecting the symbol of the flagman and using the Properties
command of the Edit menu. In the following dialog select the tab labeled Trigger. Now
select the elements that will be monitored.
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