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Most of the
wall-mounted analogue addressable panels as well as the
R3 19 inch rack panels may be linked on networks. The expanded cause/effect
networking system has the facility to monitor, indicate and control
functions of a fire alarm installation, thus allowing signals to be
distributed around a large site. The use of a networking system allows
individual sectors to be installed and commissioned prior to connection of
the network.
Each item of equipment
connected to a network is referred to as a node. Network communication is
by a single pair of wires providing a link to all nodes. No individual
node is regarded as a "master". All active nodes which are connected at
any time establish their own network communication system.
The overall concept
can be described as "all talk - selectively listen". Thus every event that
occurs on any node is transmitted onto the network. Each node then decides
(via programming) whether or not it is required to take action.
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