Schweitzer Engineering Laboratories SEL-751 - Communications Protocols; Table 7.4 Protocols Supported on the Various Ports

7.11
Date Code 20170927 Instruction Manual SEL-751 Relay
Communications
Communications Protocols
Communications Protocols
Although the SEL-751 supports a wide range of protocols, not all protocols are
available on all ports. In addition, not all hardware options support all protocols.
Be sure to select the correct hardware to support a particular protocol. For
example, if Modbus TCP is necessary for your application, be sure to order
the Ethernet option for PORT 1. Table 7.4 shows the ports and the protocols
available on each port.
SEL Communications
Protocols
SEL ASCII
This protocol is described in SEL ASCII Protocol and Commands on
page 7.16.
SEL Compressed ASCII
This protocol provides compressed versions of some of the ASCII commands.
The compressed commands are described in SEL ASCII Protocol and
Commands, and the protocol is described in Appendix C: SEL
Communications Processors.
SEL Fast Meter
This protocol supports binary messages to transfer metering and digital
element messages. Compressed ASCII commands that support Fast Meter are
described in SEL ASCII Protocol and Commands, and the protocol is
described in Appendix C: SEL Communications Processors.
SEL Fast Operate
This protocol supports binary messages to transfer operation messages. The
protocol is described in Appendix C: SEL Communications Processors.
Table 7.4 Protocols Supported on the Various Ports
PORT Supported Protocol
PORT F SEL ASCII and Compressed ASCII Protocols, SELBOOT, File Transfer Proto-
col, Modbus RTU Slave, C37.118 Protocol (synchrophasor data), and Event
Messenger
PORT 1
a
a
PORT 1 concurrently supports two Modbus, five DNP3 LAN/WAN, two FTP, two Telnet, one
SNTP, two C37.118 Protocol (synchrophasor data), and seven IEC 61850 sessions.
Modbus TCP/IP, FTP, TCP/IP, IEC 61850, DNP3 LAN/WAN, SNTP, and Tel-
net TCP/IP (SEL ASCII, Compressed ASCII, SEL Fast Meter, SEL Fast
Operate, SEL Fast SER, SEL Fast Message, and C37.118 Protocol (synchro-
phasor data)
PORT 2 SEL ASCII and Compressed ASCII Protocols, SEL Fast Meter, SEL Fast
Operate, SEL Fast SER, SEL Fast Message, SEL Settings File Transfer,
SEL M
IRRORED BITS, DNP3, IEC 60870-5-103, Modbus RTU Slave, C37.118
Protocol (synchrophasor data), and Event Messenger
PORT 3 All the protocols supported by PORT 2
PORT 4 All the protocols supported by PORT 2 and DeviceNet
NOTE: FTP, Modbus, and DeviceNet
protocols ignore the hide rules of the
settings.