IFC Networking—Metasys Intelligent Fire Network
35
Network
Node
A B
Ports
Network
Node
A B
Ports
Network
Node
A B
Ports
Repeater
A B
Ports
Repeater
A B
Ports
Remote Building
Remote Building
combo
Network
Node
A B
Ports
Network
Node
A B
Ports
Network
Node
A B
Ports
Terminating Resistors
Remote Building
Remote Building
Figure 11: Combination Wiring (NFPA Style 4 Only)
Both point-to-point and bus configurations require end-of-line resistor
termination at each end of the respective circuit, and terminating resistors
are present on all MIBs and repeaters next to the FN circuit terminals.
Whereas a point-to-point circuit has a terminating resistor at each
node/repeater port (Figure 9), a bus circuit spans multiple nodes/repeaters
with termination only at the outer edges of the circuit (Figure 8).
Note: Unused ports may have terminating resistors in place or removed
as desired.
Table 13: On-Board Terminating Resistors
Resistor
Port A
Port B
RPT-W
R40
R41
RPT-WF
R40
*
MIB-W
R20
R21
MIB-WF
R20
*
*
Terminating resistors do not apply to fiber optic cable.
Terminating
Resistors
Summary of Contents for FIRE-MON-17
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