7.28
SEL-2032
Communications Processor
Instruction Manual
Date Code 20120126
Settings
User-Defined (SET U) Commands
On IED ports, the SEL-2032 recognizes unsolicited messages from the IED
based on user-defined message strings you define with the
SET U
command
(e.g., a summary event report from an SEL relay).
On a Master port, commands are normally terminated with a carriage return
(
<CR>
). The carriage return typically is sent from a terminal or PC by
depressing the
<Enter>
key. User-defined commands on a Master port are
similarly recognized upon receipt of a
<CR>
. If you disable the SEL-2032
command set to use only user-defined commands on that port (using the
CMD_EN setting), you may select an alternate command termination
character (using the CMD_CH setting).
General-Purpose
Commands
You can set the SEL-2032 so that receipt of a command you defined sets an
SEL-2032 database bit. You can then use that bit in a SEL
OGIC
control
equation to trigger a control action or message response.
When the SEL-2032 receives a general-purpose user-defined command, it
pulses the associated local element command (CMD
x
) bit. You may create up
to eight general-purpose commands per port to control the local elements
CMD1
–
CMD8.
For SEL relays, there are predefined auto-messages that you can set the
SEL-2032 to recognize, such as status, summary event reports, and group
switch reports. For example, if you define the first general-purpose command
on an SEL IED port to be
20EVENT
, the SEL-2032 element CMD1 on that
port pulses when the SEL-2032 receives a summary event report. You use the
CMD1 bit within a SEL
OGIC
control equation to trigger a message or a control
action in response.
Similarly, on a Master port, you could define “XYZ” to be a user-defined
command (CMD1=“XYZ”). When the SEL-2032 receives “XYZ” on the
Master port, it pulses the CMD1 bit as shown in
, which you may
use to trigger a response. See
for definitions of
valid message strings.
Figure 7.5
SET U Example CMD1 Message Detection
Special-Purpose
Commands
There are three commands whose syntax and response messages you may
define using the settings READ, WRITE, and TRANS (transparent connect).
These commands read data items, write data items, and enter transparent
communications. These commands are similar to the
VIEW
,
STORE
, and
PORT
commands available in the SEL-2032 command set. The
READ
,
Message
Input
"XYZ"
Trigger
ISSUEx = CMD1
or
OUTX = CMD1
SEL
OGIC
Control
Equation Processor
Detects Assertion
of CMD1 Bit
Input Handler
User-Defined
Command
CMD1 = "XYZ"
CMD1 BIT
SET
Any Database
Bit(s)
Port n
Database
EIA-232
Port n
Содержание SEL-2032
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