Ethernet Ports; Rj45 Ethernet Ports; Figure 13 - Rj45 Ethernet Port Pin-Out; Table 2 - Rj45 Ethernet Port Pin-Out - RuggedCom RuggedServer RS910 Installation Manual

4 Ethernet Ports

4.1 RJ45 Ethernet Ports

The RS910 has several 10/100Base-TX ports that allow connection to standard category 5 (CAT-5)
unshielded twisted-pair (UTP) cable with RJ45 male connectors. The RJ45 receptacles are directly
connected to the chassis ground on the unit and can accept CAT-5 shielded twisted-pair (STP)
cables. If shielded cables are used, care must be taken to ensure the shielded cables do not form a
ground loop via the shield wire and the RJ45 receptacles at either end. The figure below shows the
RJ45 port pin-out.

Figure 13 - RJ45 Ethernet port pin-out

Pin Signal
1
2
3
4 No Connection
5 No Connection
6
7 No Connection
8 No Connection
Case Shield (Chassis Ground)
Table 2 – RJ45 Ethernet port pin-out
NOTE: RuggedCom does not recommend the use of CAT-5 (10/100Base-TX communications)
cabling of any length for critical real-time substation automation applications. However, transient
suppression circuitry is present on all copper ports to protect against damage from electrical
transients and to ensure IEC 61850-3 and IEEE 1613 Class 1 conformance. This means that
during the transient event communications errors or interruptions may occur but recovery is
automatic.
©
2007 RuggedCom Inc. All rights reserved
+Rx
-Rx
+Tx
-Tx
18
Rev100