RDU Mk2 Installation & Programming Manual
Document No: LT0499
Programming Part 1
Page 6-24
8 April 2015
Issue 1.02
8. Multiple cause updates
If a zone is configured with MultiAlm disabled (see FF Zone configuration, Section 7.2)
then the alarm list will never have more than one entry for that zone, even if there are
multiple points in alarm on that zone. If Multiple Cause Updates is enabled, then the
alarm list entry for a zone configured with MultiAlm disabled, will be updated as each
point in alarm becomes known, i.e., the alarm entry will show the latest point that has
gone into alarm on that zone. If Multiple Cause Updates is disabled, then the alarm
entry shows only the first point that goes into alarm on the zone. For zones with
MultiAlm enabled, this parameter has no effect, since each point has its own entry in the
alarm list.
9. Switch to newest alarm
If this parameter is enabled, then, whenever a new alarm is added to the FF alarm list,
the display will automatically switch from wherever it currently is, to show the new alarm
entry.
10. Show zone number on FF display
If this parameter is enabled, then the zone number will appear on the bottom line of the
FF alarm list display of a zone alarm, followed by the name of the zone or point. When
the RESET command is used, the zone number briefly appears on the top left of the
display, regardless of this parameter.
11. Show isol alarms in FF
This parameter selects whether the display shows isolated alarms. If enabled, isolated
alarms are displayed as part of the alarm list if there are no unacknowledged alarms.
This is a requirement of AS4428.1.
12. Show point text in FF for zone
For a zone configured with MultiAlm disabled (see FF Zone configuration, Section 7.2),
this parameter selects whether the alarm entry for the zone shows the point name(s),
(when available), or just the zone name. If this parameter is enabled, point names are
shown. For a zone with MultiAlm enabled, this parameter has no effect.
6.4.4.2
Capture FIP options
From the global data menu, capture FIP options produces the following menu
1:Capture FIP zone names from alarms 2:Capture FIP time/date
1. Capture FIP zone names from alarms
If this option is enabled, and the database is physically write enabled (with link LK7),
when an FF zone alarm event is received from the FIP, the zone text that comes with the
alarm will be saved into the RDU database. This means the RDU doesn't have to be
programmed with a full set of up to date zone names. In some situations, the RDU might
need its own zone names separately from the FIP.
NOTE :
When the RDU writes the zone names to flash memory, it stops responding on
the RZDU bus for a few seconds, during which time it may miss messages sent by the
FIP. Refer to section 6.4.3.2.
If the zone name received from the FIP is the same as the name already in the RDU
database then the RDU won't initiate a flash write operation. If the "capture FIP zone
names from alarms" parameter is left permanently enabled, then either the database at
the RDU should be left write protected (LK7) or the RDU zone names database should
be updated after any zone name change at the FIP. This is so that the RDU doesn't go
"offline" at "unscheduled times" while it writes zone names to flash memory.