Sel 751A - Base-Unit Communications Ports (Slot B); Table 2.1 Communication Ports

2.4
SEL-751A Relay Instruction Manual Date Code 20100129
Installation
I/O Configuration
Base-Unit
Communications
Ports (Slot B)
Select the communications ports necessary for your application from the
following base-unit options shown in Table 2.1.
Port F supports the following protocols:
➤ SELBOOT
➤ Modbus
®
RTU Slave
➤ SEL ASCII and Compressed ASCII
➤ SEL Settings File Transfer
➤ Event Messenger
➤ C37.118 (Synchrophasor Data)
Port 1 (Ethernet) supports the following protocols:
➤ Modbus TCP/IP
➤ DNP3 LAN/WAN
➤ IEC 61850
➤ FTP
➤ Telnet
Port 2 and Port 3 support the following protocols:
➤ Modbus RTU Slave
➤ SEL ASCII and Compressed ASCII
➤ SEL Fast Meter
➤ SEL Fast Operate
➤ SEL Fast SER
➤ SEL Fast Message Unsolicited Write
➤ SEL Settings File Transfer
➤ SEL MIRRORED BITS
®
(MBA, MBB, MB8A, MB8B, MBTA,
MBTB)
➤ Event Messenger
➤ DNP3 Slave Level 2
➤ C37.118 (Synchrophasor Data)
Table 2.1 Communication Ports
Port Location Feat ure Description
F Front Panel Standard Nonisolated EIA-232 serial port
1 Rear Panel Optional (Single/Dual) Isolated 10/100BASE-T
Ethernet copper port or 100BASE-FX
Ethernet fiber-optic port
2 Rear Panel Optional Isolated multimode fiber-optic serial
port with ST
®
connectors
3 Rear Panel Standard Either nonisolated EIA-232 or isolated
EIA-485 serial port