4
IFC Networking—Metasys Intelligent Fire Network
!
WARNING:
Personal Injury Hazard
. Each Proprietary
Protective Signaling System must have established
procedures that the operator will follow in the
event of an alarm or other report.
Based on the ARCNET® Local Area Network (LAN), the FN uses
high-performance technology to communicate various types of
information including fire system reports, shared point and control
information, summaries, commands to devices, and Change-of-State
(COS) messages. This information is communicated between the
FN nodes, which are IFC panels, Fire OWSs (Operator Workstations),
Fire-Net NCMs, and local Intelligent Network Annunciators (INAs). All
of the information is also shared with the Metasys Facility Management
System (FMS); however, only a limited number of commands to the
IFC panels may be initiated from the standard FMS Operator Workstation.
Figure 1 shows an example of the Primary Reporting FN connected to
FN nodes in a Style 7 configuration and communicating with the Metasys
FMS N1.
The FN supports communications over twisted pair wire, fiber optic cable,
and a combination of both wire and fiber optic cable. Either a
NFPA Style 7 (Class A) or NFPA Style 4 (Class B) FN Signaling Line
Circuit (SLC) is provided for internode communication to meet the
requirements of NFPA 72. The FN can be configured as either bus
(Style 4, twisted pair wire only) or point-to-point.
To achieve the best communication reliability across the network and for
best fault tolerance, use Style 7 whenever possible.
Summary of Contents for FIRE-MON-17
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