Siemens FN2012-A1 Installation

● Electric Ethernet with copper wiring via 10/100BaseT connections (RJ-45
connector) with a VN2001 module – max. 330ft/100m long
● Optical Ethernet with a fiber-optic 100BaseFX connection in multi-mode version
with a VN2002 module – max. 13100ft/4km long
● Optical Ethernet with a fiber-optic 100BaseFX connection in single-mode version
with a VN2003 module – max. 131000ft/40km long
The type of ring wiring between each switch is independent and can be selected at will.
A maximum of 32 switches are allowed for each Ethernet ring.
The switch built into an FS20 panel is supplied via the MoNetBus from the PMI &
mainboard. If the switch is built into another housing or device, it is supplied with power
via a 24V current-limited and supervised power supply that has been approved for use
in fire detection.
Ring wiring with Ethernet module (electric) VN2001
Switch1
P2 P3 P4 P5
P0
P1
POWER
FAULT
MoNet
Switch2
P2 P3
P4 P5
P0
P1
POWER
FAULT
MoNet
Switch5
P2 P3 P4 P5
P0
P1
POWER
FAULT
MoNet
Electrical Ethernet Ring
P2 P3 P4 P5
P0
P1
POWER
FAULT
MoNet
P2 P3 P4 P5
P0
P1
POWER
FAULT
MoNet
Switch3
Switch4
P0
P1 P0 P1
P0
P1
P0
P1
P0
P1
Figure 13: Example of ring wiring with electrical Ethernet (simplified representation)
Jumper settings on the VN2001 for electrical Ethernet:
Switch VN2001 in port P0 VN2001 in port P1
1 open Ground fault supervision
2 open Ground fault supervision
3 open Ground fault supervision
4 open Ground fault supervision
5 open Ground fault supervision
The minimum cable length for an electrical 10/100BaseT cable on the VN2001 is
10ft/3m. Shorter lengths are only permitted within the same housing, or if the
connection does not need to be supervised in accordance with the UL864 standard.
Wiring
Ethernet switch in the Ethernet network
4
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Siemens FN2012-A1 Specifications

General

Brand	Siemens
Model	FN2012-A1
Category	Network Router
Language	English