IFC Networking—Metasys Intelligent Fire Network
63
Appendix
Cooperative Control-By-Event (CCBE), like Control-By-Event (CBE), is
used to provide a variety of responses based on various combinations of
events (initiating conditions). Where CBE programming controls the
interaction between devices and software zones within one IFC-1010/2020
panel, CCBE programming controls events between multiple IFC panels
on FN. For example, an initiating device in one panel turning an output
device of another panel through a reverse activated software zone.
When an alarm occurs in a Fire Network IFC panel (referred to as the
initiating panel for this example), the programmed CBE interlocks in that
panel’s program determine what actions will be taken in that panel.
Initiating devices such as pull stations or automatic detectors may list
one or more software zones in their CBE list. Those zones become active
(Turn On) when the initiating device is active (On or Alarm).
In a Fire Network, each software zone that becomes active through a CBE
interlock as a result of an alarm will broadcast its change to the active state
across the FN to all other nodes (referred to as receiving panels). The
software zone will identify itself in the broadcast by node number of the
initiating panel and zone number. In other words, if an alarm occurs in
one IFC panel, and that results in a software zone going active, every other
node on the FN will hear the broadcast of that zone going active. In any
receiving IFC panel, if the initiating panel and zone numbers are part of
the CCBE or a reverse zone (Zone Type ID RZON), that RZON will
become active.
In this manner, alarms in one node are transmitted to all other nodes on the
FN through the use of software zones in the initiating panel. Other
IFC panels’ nodes can react to the alarm by receiving the broadcast alarm
and activating one or more reverse zones. Once a reverse zone is activated
in a receiving IFC panel, through standard CBE interlocking programmed
actions in that IFC panel are accomplished.
Cooperative
Control-By-
Event
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