Schweitzer Engineering Laboratories SEL-2100, Инструкция по эксплуатации

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Date Code 20010529 Fast Meter Protocol E-1
SEL-2100 Instruction Manual
APPENDIX E: FAST METER PROTOCOL
I
NTRODUCTION
SEL relays have two separate data streams that share the same serial port. The human data
communications with the relay consist of ASCII character commands and reports that are
intelligible to humans using a terminal or terminal emulation package. The binary data streams
can interrupt the ASCII data stream to obtain information and then allow the ASCII data stream
to continue. This mechanism allows a single communications channel to be used for ASCII
communications (e.g., transmission of a long event report) interleaved with short bursts of binary
data to support fast acquisition of metering data. The device connected to the other end of the
link requires software that uses the separate data streams to access this feature. The binary
commands and ASCII commands can also be accessed by a device that does not interleave the
data streams.
SEL Application Guide AG95-10: Configuration and Fast Meter Messages , is a comprehensive
description of the SEL binary messages. Below is a description of the messages provided in the
SEL
- 2100.
M
ESSAGE
L
ISTS
Introduction
The SEL-2100 supports the following SEL Fast Meter and configuration messages:
A5C0 Fast Meter definition block
A5C1 Fast Meter configuration block
A5D1 Fast Meter data message
A5B9 Status bits clear command
A5CE Fast Operate configuration message
A5EO Fast Operate remote bit control
BNA ASCII names of status bits
ID ASCII FID and TID strings
DNA ASCII names of digital I/O
SNS ASCII names of SER settings
Processing
The SEL-2100 receives and transmits Fast Meter messages interleaved with ASCII messages.
Upon power up and settings change, the SEL-2100 sets the Settings Change bit in the Fast Meter
Status byte.