Tyco RDU Mk2, Инструкция по установке и программированию, Страница: 77 / 178

Document No: LT0499 RDU Mk2 Installation & Programming Manual
Programming Part 1
Issue 1.02 8 April 2015 Page 6-23
4. Global commands.
When the Global commands option from FF page 2 is selected, the following menu
appears. 1:Global reset 2:Global isol 3:Global ack 4:Type3 Global Ack
There are four parameters that can be enabled and disabled - global reset, global isol,
global ack and "type 3 global ack". These options determine whether the RDU can send
a "global command" (ack, reset or isolate) to the FIP. When the FIP receives the global
command, it applies it to all zones that are in alarm and are associated with the RDU.
(F4000/ MX4428 have the ability to associate specific zones with a particular RZDU
device).
The term "global command" is used because the command is actioned by the FIP (rather
than the RDU) and affects the entire system. "Global commands" are really a legacy
facility because they are applied to "all zones in alarm" whereas AS4428.1 requires that
zones be individually acknowledged, reset or isolate.
Global Reset, Global Isolate.
When the reset or isolate keys are pressed and the respective global option is enabled,
the RDU will send a global command to the FIP if either "type 2" FF operation is selected
at the RDU or the protocol type is non-LCD. The non-LCD protocol doesn't allow
individual zone reset or zone isolate commands to be sent to a FIP.
Global Ack
When the ACK key is pressed at the RDU, a global ACK command is sent to the FIP if
the global ack parameter is enabled and type 2 FF operation is selected.
Type 3 Global Ack
If the "type 3 global ack" parameter is enabled and type 3 FF operation is selected, then
when the ack key is pressed at the RDU and there is at least one unacknowledged
alarm, a "global ack" command is sent to the FIP. This parameter is normally disabled
because with AS4428.1, zones must be acknowledged, reset and isolated individually,
not as a group.
5. FF Show FIP Zone Names
If enabled, the RDU will show the zone name sent by the FIP with an alarm event
instead of showing the zone name assigned in the RDU’s database.
6. FF Display Cause by Default
By default, the first line of the FF Alarm display shows:
Alarm Time, Alarm Type, Acknowledge State, Number of Alarms
When the "AND" key is pressed, the first line changes to:
Cause, Number of Alarms
If the “Display Cause by Default” option is enabled, the first line is shown as:
Cause Preview, Alarm Type, Acknowledge State, Number of Alarms
and when the "AND" key is pressed, the first line changes to:
Full Cause, Alarm Time, Number of Alarms
The Cause Preview consists of the first section of the Full Cause.
7. New cause new alarm
When a zone goes into alarm, the alarm is initially displayed without any point
information. When the specific point or points that caused the alarm become known, the
alarm entry is updated with the point information (i
f programmed to be), and if “new
cause new alarm” is enabled, the alarm entry will be made unacknowledged (even if it
was previously acknowledged) and the alarm buzzer will resound (if programmed to for
that zone).