Siemens Cerberus PYROTRONICS MXL, Руководство по эксплуатации, установке и обслуживанию

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Glossary - 2
Glossary
NFPA 12A, 13, and 2001
These are the standards of the NFPA fire code that relate to releasing service, such
as sprinklers, FM-200, etc.
NFPA 72 Local System (Protected Premises Fire Alarm System)
A protected premises system that automatically sounds an evacuation alarm at the
protected premises as the result of the manual operation of a fire alarm box or the
operation of protection equipment or systems, such as water flowing in a sprinkler
system, the discharge of carbon dioxide, the detection of smoke, or the detection
of heat.
NFPA 72 Proprietary (Proprietary Supervising Station Fire Alarm System)
An installation of fire alarm systems that serves contiguous and noncontiguous
properties, under one ownership, from a proprietary supervising station located at
the protected property, at which trained, competent personnel are in constant
attendance. This includes the proprietary supervising station; power supplies;
signal-initiating devices; initiating device circuits; signal notification appliances;
equipment for the automatic, permanent visual recording of signals; and equip-
ment for initiating the operation of emergency building control services.
Pseudo Point
The pseudo point (and module) is a concept that was added to the MXL in order to
increase system flexibility in both networked and non-networked systems. As the
name pseudo suggests, these are virtual devices (not physical) in the system.
These points allow the system programmer to create events in the system
(alarms, supervisories, troubles, etc.) based on criteria other than the state change
of a real device and are intended to allow the system to generate events that
result in information being recorded to an event queue (and therefore are recorded
to a printer or other device).
For example, a programmer might insert one of these virtual points on the output
of a logic function in a networked system when a remote node has a need to know
about the state change of that function. When the function changes state, so will
the pseudo point. This results in a local event being generated in the alarm queue
at the pseudo point’s address (assuming an alarm usage has been selected). In
addition to the local event, the event will be transmitted across XNET to other
nodes. These nodes can use this alarm as it would an alarm from any other alarm
causing point.
Although introduced for networked systems (XNET), pseudo points can be applied
in variety of MXL installations.
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