Schweitzer Engineering Laboratories SEL-387-0, Instruction Manual

Page: 339 / 568

7.29
Date Code 20050919
Instruction Manual SEL-387-0, -5, -6 Relay
Serial Port Communications and Commands
SEL ASCII Protocol Details
Refer to Section 6: Setting the Relay for all default settings and setting
worksheets.
SET R (Edit SER Settings)
Access Level 2
Configure the Sequential Events Recorder settings using the SET R
command. The settings are the four sequential events recorder trigger
conditions (SER1 to SER4) and the ALIAS1 to ALIAS20 settings for re-
naming Relay Word bits for the SER report. The entire syntax of the
SET R
command follows:
SET R Setting TERSE <Enter>
The two parameters are optional and perform the following functions:
➤
Setting specifies the setting name with which to begin. The
default is the first setting.
➤
TERSE eliminates the display of the new settings at the end of
the setting procedure. The command will function properly if
just
TE is entered, instead of the full word.
The SET R procedure works just like the SET procedure. Table 7.5 lists the
editing keys that you can use with the SET command.
Refer to Section 6: Setting the Relay for setting worksheets. Refer to
Section 9: Event Reports and SER for more details on default settings and data
retrieval.
SHO (Show Group 1—6 Settings)
Access Levels 1, B, 2
SHOWSET displays the relay settings of the currently selected group. The
entire syntax of the SHO command follows:
SHO n Setting A<Enter>
➤
n specifies the setting group (1 through 6). The default is the
active setting group.
➤
Setting specifies the setting name with which to begin. The
default is the first setting.
➤
If Setting = A , then hidden settings are shown in addition to the
regular settings.
Control characters provide control over the scrolling of the data:
Temporarily Stop Scrolling: <Ctrl+Q> hold down the Control key and
press Q)
Restart Scrolling: <Ctrl+S> (hold down the Control key and press S)
Cancel Scrolling Completely: <Ctrl+X> (hold down the Control key and
press X)
Settings cannot be entered or modified with this command. Change settings
with the
SET command from Access Level 2. Refer to Section 6: Setting the
Relay for information on all settings. The following example demonstrates the
report for the SHO command.
NOTE:
Make Sequential Events
Recorder (SER) Settings With Care.
The relay triggers a row in the
Sequential Events Recorder (SER)
event report for any change of state in
any one of the elements listed in the
SER1, SER2, SER3, or SER4 trigger
settings. Nonvolatile memory is used
to store the latest 512 rows of the SER
event report so they can be retained
during power loss. The nonvolatile
memory is rated for a finite number of
"writes." Exceeding the limit can
result in an EEPROM self-test failure.
An average of 1 state change every
3 minutes can be made for a 25-year
relay service life.