User guide

MDX-ETHERNET User Guide 9
Issue : a www.leroy-somer.com
4 Electrical installation
4.1 Terminal descriptions
MDX-ETHERNET provides a standard RJ45 UTP/STP (Un-shielded/Shielded Twisted
Pair) connection to a 10Mbs or 100Mbs Ethernet system. MDX-ETHERNET provides 4
diagnostic LEDs for status and information purposes.
Figure 4-1 shows an overview of the module connections and indicators.
Figure 4-1 MDX-ETHERNET terminals
Figure 4-2 MDX-ETHERNET Module Layout
Table 4.1 RJ45 pin out details
4.2 Cabling considerations
To ensure long-term reliability it is recommended that any cables used to connect a
system together are tested using a suitable Ethernet cable tester, this is of particular
importance when cables are constructed on site.
#Item
3 Link/Activity Port 1
4 Link/Activity Port 2
1 Transmit + Ve
2 Transmit - Ve
3 Receive + Ve
4-
5-
6 Receive - Ve
7-
8-
Not used
1 2 3 4 5 6 7 8
Not used
Transmit +
Receive +
Not used
Transmit -
Receive -
Not used