10.8
SEL-311C Relay Instruction Manual Date Code 20060320
Serial Port Communications and Commands
Communications Protocols
SEL Fast Meter Protocol
SEL Fast Meter protocol supports binary messages to transfer metering and
control messages. The protocol is described in Appendix D: Configuration,
Fast Meter, and Fast Operate Commands.
SEL Compressed ASCII Protocol
SEL Compressed ASCII protocol provides compressed versions of some of
the relay ASCII commands. The protocol is described in Appendix E:
Compressed ASCII Commands.
Distributed Network Protocol (DNP3)
The relay provides Distributed Network Protocol (DNP3) slave support. DNP
is an optional protocol and is described in Appendix I: DNP Communications.
MIRRORED BITS Communications
The SEL-311C supports MIRRORED BITS relay-to-relay communications on
two ports simultaneously. See Appendix J: M
IRRORED BITS Communications.
SEL Fast Message Synchrophasor Protocol
SEL Fast Message Synchrophasor protocol are general Fast Messages that
transport measured synchrophasor information. The protocol is described in
Appendix G: SEL Synchrophasors.
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