Download - Freiwald Software

X
A typical example of a critical section is a single track line between two stations, which
can be traveled in both directions. If there is one or more block between these two stations,
then these blocks should be marked as critical sections. A train, which is about to
leave one of the two stations towards the other station will not leave this station, if it is
not sure, that a block inside the other station is available, i.e. if it is not sure, that it can
leave the critical section on the other side. This prevents trains from deadlock each
other on the single line track between both stations.
There is a specific option, though, that allows trains, that are executing the same schedule
at the same time, to share a critical section. In this way it is possible to queue several
trains heading to the same direction in the same critical section while opposing
trains must wait, until the complete critical section is clear. This allows several trains to
follow each other on a single track line while locking opposing trains.
Critical sections can be assigned to blocks on a per-schedule base or alternatively in the
main block diagram, too. A block that is marked as a critical section in the main block
diagram will be treated as such in all schedules, that contain this block. A block, that is
marked as critical section in certain schedules only will only affect those trains, that are
controlled by this schedule.
In Versions prior to Version 5.0 of TrainController the Dispatcher used a method
based on so called sub-lines and stages to avoid such deadlocks. These methods are superseded
by the more flexible concept of critical sections. Data files imported from an
earlier version of the software are converted accordingly, i.e. stages and sub-lines contained
in such data files are converted to critical sections.
The Train Guidance System
The Usage of blocks, routes and schedules can be restricted to certain engines, trains or
train groups. In this way it is possible to ensure, that certain schedules are only started
with passenger trains or to avoid, that electric engines enter tracks without overhead cable.
This feature can also be used to make sure, that trains automatically entering a hidden
yard are directed to tracks, which are long enough to hold the train.
If no engine or train is explicitly specified as permitted train, then the block, route or
schedule can be used by all trains.
A schedule can only be started when a train can be found on a block of this schedule
and this train has the permission to use this schedule.
If you want to define home blocks for certain trains, e.g. in a hidden yard, then assign
these trains to their desired home blocks as permitted trains. As a consequence only
207