Chapter 2: Installation
42 2X-A Series Installation Manual
Ring configuration
Ring network configuration is recommended as it provides for redundancy in the
transmission path.
For ring configuration (Class A), use both ports to connect all network boards or
control panels to form a ring, as shown below.
Figure 20: Fire network ring configuration
Bus configuration
Caution: Use bus network configuration only in cases where the detection zones
and mandatory EN 54-2 output functions (sounder and fire routing outputs) are
not remote between panels.
Bus network configuration is not recommended. It does not provide for
redundancy in the transmission path and creates a fire network much more
sensitive to faults.
For bus configuration (Class B), connect control panels as shown below.
Figure 21: Fire network bus configuration
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