G - 1
Appendix G
When the Latching/Non-Latching (self
restoring) trouble option is set to YES
in the CSG-M, MXL automatically
removes trouble conditions from the
trouble queue when the OUT OF
TROUBLE condition is detected.
For NFPA 72 Local, 72 Municipal Tie,
and 72 Remote Station systems, the
following criteria must be met in order
for the trouble to be removed from the
trouble queue:
Module and device numbers
must be identical
Trouble type must be identical
Both IN/OUT conditions must be
recorded in the queue
All printers being used must print
both IN/OUT conditions
When all these conditions are met, the
MXL removes both the in and out
occurrence of this trouble from the
queue. If there are no other events in
the system (alarm, supervisory, trouble,
or security), MXL returns to the SYS-
TEM NORMAL display (without a
system reset). If there are other events
in the system, MXL updates the
display.
Latching/Non-Latching Troubles
For NFPA 72 Proprietary systems, the
following criteria must be met if the
trouble is to be removed from the
trouble queue:
Module and device numbers
must be identical
Trouble type must be identical
Both IN/OUT conditions must be
recorded in the queue
All printers being used must print
both IN/OUT conditions
Both IN and OUT conditions must
be acknowledged and printed
When all these conditions are met,
MXL removes both the in and out
occurrence of this trouble from the
queue. If there are no other events in
the system (alarm, supervisory,
trouble, or security), MXL returns to
the SYSTEM NORMAL display. If
there are other events in the system,
MXL updates the display.
Not all troubles can be removed from
the trouble queue. If there is no OUT
condition reported (i.e., Class A loop
trouble), MXL requires an
acknowledgement and reset.
This feature is not available for Networked MXL Systems.
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