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Chapter 8: Communications Menu
Line Fail Response
Use this option to specify how the system should respond when the control unit detects a
line-fail fault from the plug-by communicator. The control unit monitors for line faults by
using the LF input on the plug-by port. The communicator should apply 0V to the LF input
if there is no fault, and 12Vdc if a fault is present.
Audible
Scantronic recommends audible response for line fault. If the system is unset, the
system logs the event. Keypads and loudspeakers produce a short audible tone after
Line Fail Delay
when the line response changes from OK to fail. Entering a valid
access code silences the tone and the display indicates a line fault. The system can
be set again with the line fault present.
If the system is set, the control unit logs the event but does not give any tone or
display. The control unit cancels any programmed siren delay if the line is out of
order when an alarm occurs.
Silent
If the system is unset, the keypad display indicates a line fault, the LEDs around the
navigation key glow red, and the control unit logs the event. The system may be set
again with the line fault present.
If the system is set then the control unit does not give any indication or tone but does
log the event. The control unit cancels any programmed siren delay if the line is out
of order when an alarm occurs.
Disabled
The control unit does not monitor the line.
Line Fail Delay
Use this option to specify the length of time the control unit waits after detecting a line-fail
fault on a communications path from the plug-by port before it generates an alert, actives
communications and activates line-fail outputs.
Note:
The control unit may take a few seconds to recognise a line fail. The actual delay
between line fail and the resulting alert will be slightly longer than the value you specify.
