PHOENIX CONTACT page 6 of 7
Medium Converter – FL MC 10BASE-T/FO G850
5. Connecting the Supply Voltage
U S 1 +
G N D
U S 2 +
r e d u n d a n t e V e r s o r g u n g
( o p t i o n a l )
G N D
6 3 7 9 A 0 1 8
6 1 4 5 1 0 0 1
U L
F L M C 1 0 B A S E - T
/ F O G 8 5 0
O r d . - N o . 2 7 4 4 7 8 8
T D
1
R D
2
Figure 09
Connecting the supply
Figure 10
Pin assignment in RJ45 format
P i n 1
P i n 2
P i n 3
P i n 4
P i n 5
P i n 6
P i n 7
P i n 8
R D
+
R D
-
T D
+
T D
-
n . c .
n . c .
n . c .
n . c .
R J 4 5
6.3. Diagnostic Indicators
Link Control TP Path (RJ45):
The line monitoring checks the connected cable
segment for a short circuit or interrupt. To do this, the
partner must send link or data signals. The LED
(green) lights up if no error has occurred. An interface
that is not being used or a terminal device that is
switched off is indicated as an error and the LED goes
out.
Data Control TP Path (RJ45):
The data LED (yellow) flashes depending on the
amount of data that is received by the 10Base-T
interface.
The module is operated using a +24 V DC SELV.
5.1. Operation as an Individual Device:
Provide the supply voltage for the module via
terminals US1 and GND.
As an option, an additional power supply unit can be
connected to terminals US2 and GND to provide a
redundant voltage supply.
Both US1/US2 voltages are forwarded on the
backplane (Figure 03).
5.2. Operation in a FL Hub Station:
6. Twisted-Pair Interface (TP Port)
6.1. 10Base-T Interface
The FL MC 10BASE-T/FO G850 has an Ethernet
interface on the front in RJ45 format, to which only
twisted-pair cables with an impedance of 100
Ω
can be
connected. The data transmission rate is 10 Mbps. The
interface can detect a pair of incorrectly connected
receiving cables (RD+/RD-) and correct them using the
auto polarity correction function.
.
6.2. Connection
Push the Ethernet cable with the
crimped RJ45 connector into interface 1 until it
engages with a click. Observe the encoding of the
connector.
The sum of the nominal currents in a FL
station must not exceed 2 A. Please refer
to the nominal currents specified in the
data sheets for the selected FL modules.
The supply voltage US1, and if applicable
US2, may only be supplied to one of the
modules and never to several modules.
If a hub or hub agent is present in the
station, the supply must be provided to
one of these modules.
Only use shielded twisted-pair cables
and corresponding shielded RJ45
connectors.
