Sel 751A - Table 7.48 SUMMARY Command; Table 7.49 TARGET Command (Display Relay Word Bit Status); Table 7.50 TARGET Command Format; Table 7.51 Front-Panel Leds and the TAR 0 Command

7.41
Date Code 20100129 Instruction Manual SEL-751A Relay
Communications
SEL ASCII Protocol and Commands
SUMMARY Command
The SUM command (see Table 7.48) displays an event summary in human
readable format.
Each event summary report shows the date, time, current magnitudes (primary
values), frequency, and, if the relay has the voltage option, voltage magnitudes
(primary values). The relay reports the voltage and current when the largest
current occurs during the event. The event summary report also shows the
event type (e.g., Phase A 51 Trip).
TARGET Command (Display Relay Word Bit Status)
The TAR command (see Table 7.49 and Table 7.50) displays the status of
front-panel target LEDs or Relay Word bit, whether these LEDs or Relay
Word bits are asserted or deasserted.
The elements are represented as Relay Word bits and are listed in rows of
eight, called Relay Word rows. The first four rows, representing the front-
panel operation and target LEDs, correspond to Tab le 7.51. All Relay Word
rows are described in Table J.1 and Table J.2.
Relay Word bits are used in SEL
OGIC control equations. See Appendix J:
Relay Word Bits.
The TAR command does not remap the front-panel target LEDs, as is done in
some previous SEL relays.
Table 7.48 SUMMARY Command
Command Description Access Level
SUM n The command without arguments displays the latest
event summary. Use n to display particular event
summary.
1
SUM R or C Use this command to clear the archive. 1
Table 7.49 TARGET Command (Display Relay Word Bit Status)
Command Description Access Level
TAR name k
TAR n
TAR n k
Use TAR without parameters to display
Relay Word Row 0 or last displayed target row.
1
TAR R Clears front-panel tripping targets. Unlatches the
trip logic for testing purposes (see Figure 8.1).
Shows Relay Word Row 0.
1
Table 7.50 TARGET Command Format
Parameter Description
name Display the Relay Word row with Relay Word bit name.
n Show Relay Word row number n.
k Repeat k times (1–32767)
NOTE: The TARGET R command
cannot reset the latched targets if a
TRIP condition is present.
Table 7.51 Front-Panel LEDs and the TAR 0 Command
LEDs 7 6 5 4 3 2 1 0
TAR 0 ENABLED TRIP_LED TLED_01 TLED_02 TLED_03 TLED_04 TLED_05 TLED_06