Chapter 14 – Communications
2 COMMUNICATION INTERFACES
The RPV311 has the following communication interfaces:
Two 10/100BaseT Ethernet interfaces using RJ45 connectors (ETH 1 and ETH 2);
One 100 Mbps Ethernet interface using RJ45 connectors (Process Bus)
Two optical Ethernet interfaces (100BaseFX), using ST connectors for use with multimode fiber-optic, of an
internal electric-optical Ethernet converter (optional);
A serial interface in RS232C level, using DB-9 female connector, DTE standard (Modem). This interface can
be used only to communicate by Modem.
2.1 ELECTRICAL AND OPTICAL ETHERNET
The RPV311 has 2 electrical 10 / 100 Mbps Ethernet interfaces for configuration, monitoring and GOOSE
reading and one electrical 100 Mbps Ethernet interface for Process Bus (IEC 61850-9-2LE Sampled Values
and GOOSE)
Optionally it is possible to use the double internal converter for optical Ethernet interface, making the
connection between the RJ45 connector of the electrical Ethernet interface and the RJ45 connector of the
internal optical Ethernet converter by using a jumper cable, and connecting the fiber-optic pair with the
appropriate ST connectors.
Figure 96 shows the electrical and optical Ethernet interfaces. On the left are the interfaces for configuration,
monitoring and GOOSE. On the right is the interface for Sampled Values and GOOSE reading.
Figure 96: Electrical and optical Ethernet inputs
To minimize EMC effects, the use of fiber-optic cables is recommended for communication over distances
greater than 3 m.
Ethernet Port Default Settings
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