TrainController Gold and Silver - Freiwald Software

Diagram 106 shows a block equipped with one occupancy (B) and two momentary sensors
(A and C). Each of these sensors is associated with a contact indicator in the software
called A, B and C. All indicators are assigned to the same block in the software.
The block is indicated as occupied as soon as a train enters section B from any direction.
The block remains occupied until the train leaves section B. The indicator A additionally
corresponds to a stop marker for trains running to the left, C is marked with a
stop marker for trains running to the right. Both indicators are additionally marked with
brake markers for the opposite direction, respectively. The location of A and C should
ensure, that each train is safely stopped before touching one of the turnouts. On the other
side the longest train should completely fit into the block when being stopped. For
this reason A or C, respectively, where trains are stopped, must be located close enough
to the boundaries of the complete block.
Application of Diagram 106 has take into account, that momentary contacts tend to be
less reliable than occupancy sensors.
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Diagram 107: Simple Block with two momentary sensors
Diagram 107 shows a simple configuration of a block equipped with two momentary
sensors. Both sensors are associated with a contact indicator in the software called A
and C. Both indicators are assigned to the same block in the software. The indicator A
is additionally marked with a stop marker for trains running to the left, C is associated
with a stop marker for trains running to the right. Both indicators are additionally
marked with brake markers for the opposite direction, respectively. The location of A
and C should ensure, that each train is safely stopped before touching one of the turnouts.
On the other side the longest train should completely fit into the block when being
stopped. For this reason A or C, respectively, where trains are stopped, must be located
close enough to the boundaries of the complete block.
The configuration displayed in Diagram 107 is very simple and inexpensive but has also
some disadvantages. Block occupancy is not indicated. As long as the block is reserved
for a train located inside this block this causes no major problem, because the
dispatcher will not allow another train to enter this block. But certain measures are to be
taken to avoid premature reservation of this block for another train when a train leaves