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Timing Parameters
The Lockout and Time Lock delays can be set on the MRGui Timing tab (Figure 22). Both delays can
be set from 0s to 255s in 1s increments.
The Lockout delay applies after a train clears the interlocking block but still occupies the block opposite
that from which it approached the interlocking. While the Lockout timer is running, the interlocking
will not detect a train in that opposite block, giving the train time to leave without re-activating the
interlocking from the opposite direction.
The Time Lock delay begins when any signal drops from a proceed indication to a stop indication. The
interlocking cannot provide another proceed indication until after the Time Lock delay expires.
Figure 22: Timing Configuration
Miscellaneous Settings
To accommodate a variety of sound modules, each sound output can be independently configured for
active high or active low outputs. See Figure 23.
Figure 23: Sound Configuration
Like the other detectors, the polarity of the automatic interchange detector is also configurable. See
Figure 24. Additionally, the polarity of the output that drives the interchange relay can also be selected,
allowing the MRB-IIAB to be used with a variety of relay modules.
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