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Switch Port
Cross-Over Cable
(NIC Port)
RJ
45 Plug Pin 1
RJ45
Connector
(Rx+)
Tx+
3
(Rx-)
Tx-
6
(Tx+)
Rx+
1
(Tx-)
Rx-
2
100BaseFX Ethe
rnet Port Connection
T
he concept behind the SC/ST port and cable is quite straightforward. Suppose
y
ou are connecting devices I and II. Contrary to electrical signals, optical
signals do
not require a circui
t in order to transmit data. Consequently, one of
the optical
lines is used to tra
nsmit data from device I to device II, and the
other opt
ic
al line is used transmit data from device II to device I, for
full-duple
x
transmission.
A
ll you need to remember is to connect the Tx (transmit) port of device I to
the Rx (receive) port of device II, and the Rx (receive) port of
Tx (transmit) port of device II.
SC-Port Pinouts
Tx
Rx
ATTENTION
This is a Class 1 La
ser/
dam
age to
your eye
s, do
Red nd
u
an
t Pow r In
B
oth power inputs can be connected simultaneously to live DC power sources.
If one power source fails, the other live source acts as a backup, an
automatically supplies all of IE-SW-VL09-Switch power needs.
Alarm Contact
The Ethernet Switch has one Alarm Contact located on the top panel. For
detailed instructions on how to connect the Alarm Contact power wires to the
two middle contacts of the 6-contact terminal block connector, see the Wiring
the Alarm Contact section on page 8. A typical scenario would be to connect
the Fault circuit to a warning light located in the control room. The light can be
set up to switch on when a fault is detected.
The Alarm Contact has two terminals that form a Fault circuit for connecting to
an alarm system. The two wires attached to the Fault contac
circuit when (1) Ethernet Switch has lost power from one of the DC power
inputs, or (2) one of the ports for which the corresponding PORT ALARM DIP
Cable Wiring
1
2
3
6
device I to the
ST-Port Pinouts
Tx
Rx
LED
produc
t. T
o avoid causing seri
not
stare d
ire y into the Laser Beam.
ctl
e
pu s
t
ts form an open
- 9 -
Switch Port
(NIC Por
t)
RJ45
Conne
ctor
Rx+
(Tx+)
Rx-
(Tx-)
Tx+
(Rx+)
Tx-
(Rx-)
ous
d
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