Schweitzer Engineering SEL-387-0, Instruction Manual

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D.13
Date Code 20170601 Instruction Manual SEL-387-0, -5, -6 Relay
Configuration, Fast Meter, and Fast Operate Commands
Message Definitions
DNA Command
In response to the DNA command, the relay sends names of the Relay Word
bits, as described below:
<STX> (STX character, 02)
"xxxxxx","xxxxxx","xxxxxx","xxxxxx","xxxxxx","xxxxxx","xxxxxx","xxxxxx","yyyy"<CR>
... (49 more [50 more for SEL-387-6 Relay], where xxxxxx is a relay word element
name)
<ETX> (ETX character, 03)
BNA Command
In response to the BNA command, the relay sends the names of the bits
transmitted in the Status Byte of the Fast Meter messages (A5D1, A5D2, and
A5D3) as shown below:
<STX> (STX character, 02)
"*","*","*","STSET","STFAIL","STWARN","*","*","yyyy"<CR>
<ETX> (ETX character, 03)
The bits named are defined as follows:
➤
STSET Set when a power-up or settings change has occurred. It
is cleared by the A5B9 request (see earlier in this Appendix).
➤
STFAIL One or more of the monitored status quantities is in a
FAIL state.
➤
STWARN One or more of the monitored status quantities is in
a WARN state.
SNS Message
In response to the SNS command, the relay sends the name string of the SER
(SER1, SER2, SER3, and SER4) settings. SNS command is available at
Access Level 1.
The relay responds to the SNS command with the name string in the SER
settings. The name string starts with SER1, followed by SER2, SER3, and
SER4.
For example: If SER1 = 50P11 OUT101; SER2 = 87U1 32IF; SER3 =
OUT102 52A, SER4 = 0; the name string will be "50P11","OUT101","
87U1"," 32IF","OUT102","52A".
If there are more than eight settings in SER, the SNS message will have
several rows. Each row will have eight strings, followed by the checksum and
cartridge return. The last row may have less than eight strings.
where:
yyyy
= the 4-byte ASCII representation of the hex checksum for
the line
32
= the device code used by the SEL-2030 to identify the
relay to Modbus users.
where:
xxxxxx
= each name in ASCII. "*" indicates an unused bit position.
The labels shall appear in order from Most Significant Bit
(MSB) to Least Significant Bit (LSB).
yyyy
= the 4-byte ASCII representation of the hex checksum for
the line.
where:
yyyy
= the 4-byte ASCII representation of the hex checksum for
the line.