Date Code 20011026 Communications 3-11
SEL-321/321-1 Instruction Manual
EVENT
The EVENT command displays an event report. To select one of the twelve events stored in
relay memory, enter the EVENT command with a number from 1 for the newest event, through
12 for the oldest event. If no event report is selected, the relay displays the newest event report.
Type EVENT 9 <ENTER> to display an event report for the 9th event. To view an alternate
format event report, append a format selector to the command. For example, type EVENT 2 L
<ENTER> (parameters following EVENT can be entered in any order) to see the long event
report for event number 2. The following list shows all possible format selectors.
Format Selector
Event Report Type
Omitted 1/4-Cycle Standard (Default) Event Report
L 1/16-Cycle Long Event Report
R 1/16-Cycle Unfiltered Long Event Report
C 1/16-Cycle Computer Event Report
U 1/16-Cycle Unfiltered Computer Event Report
Interruption of control power clears the event buffers. All event data are lost when event buffers
are cleared. However, the relay retains a short history of each of the 40 newest events in non-
volatile memory (see the HISTORY command).
Note: Adding a space M following the format selector replaces OUT1 - OUT8 with TMB1 -
TMB8 and IN1 - IN8 with RMB1 - RMB8.
If an event buffer is empty when you request an event, the relay returns an error message:
=>EVEN
EVENEVEN
EVENT 12 <ENTER>
T 12 <ENTER>T 12 <ENTER>
T 12 <ENTER>
Invalid event
=>
Refer to Section 4: Event Reporting for a detailed explanation of the generation and analysis of
event reports.
GROUP
The GROUP command designates the Group Variable. This variable (1 - 6) specifies which
setting group is the active group when no Setting Group Selection inputs (SS1, SS2, SS3) are
assigned or all assigned SS inputs are deasserted. See Section 2: Specifications for additional
details on group switches.
=>>GROUP 2 <ENTER>
GROUP 2 <ENTER>GROUP 2 <ENTER>
GROUP 2 <ENTER>
Change Group Variable:
Are you sure (Y/N) ? Y <ENTER>
Y <ENTER>Y <ENTER>
Y <ENTER>
=>>
The GROUP command does not clear the event report buffer. If the active group is changed, the
relay pulses the ALARM output contacts and transmits the following message to ports designated
automatic:
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