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Diagram 120: Memory of a an Indicator
Normally, the indicator is turned off when the condition that causes the activation of
the indicator no longer applies, e.g. if Timer is selected, and the specified time period
has passed, then the indicator is turned off only if the condition does no longer apply. If
the condition is still valid, then the indicator remains turned on even if the specified
time period has passed. Sometimes it is useful to turn off the indicator regardless of the
current state of the condition. For this purpose the additional option Forced Reset can
be selected.
Example: Preventing an Indicator from Flickering
In the following example it is assumed that a certain momentary track contact is triggered
by each axle of a passing train. It is shown how the indicator symbol can be prevented
from flickering. Finally the indicator will be turned only once by a passing train.
• Create a contact indicator and link it to the momentary track contact.
• Set the memory of the indicator to Timer 2 Seconds.
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