P.15.11
Date Code 20151029 Protection Manual SEL-411L Relay
ASCII Command Reference
Description of Commands
If the circuit breaker control enable jumper BREAKER is in place, the relay
responds,
Close breaker (Y/N)? When you answer Y <Enter> (for yes), the
relay prompts,
Are you sure (Y/N)? If you again answer Y <Enter>, the
relay asserts the Relay Word bit for one processing interval.
If you have assigned a circuit breaker auxiliary contact (52A) to a relay
control input (based on the 52AAn, 52ABn, 52ACn settings), the relay waits
0.5 second, checks the state of the circuit breaker, and issues either a
Breaker
OPEN
or Breaker CLOSED message.
If circuit breaker control enable jumper BREAKER is not in place, the relay
aborts the command and responds,
Aborted: the breaker jumper is not
installed
. If the relay is disabled, the relay responds, Command aborted
because relay is disabled
. If setting NUMBK := 1 and you issue the
CLOSE 2 command, the relay responds
Breaker 2 is not available.
COMMUNICATIONS
COM 87L
Use the COM 87L command to display the status report of the active
protection communications channels, and to delete and reset communications
statistics and recording information.
The COMMUNICATIONS command displays communications statistics for
the M
IRRORED BITS
®
communications channels. For more information on
M
IRRORED BITS communications, see SEL MIRRORED BITS Communications
on page C.2.10.
COM c
Use the COM c command to view records in the communications buffers for
specific relay communications channels.
Table 15.31 COM 87L Command
Command Description Access Level
COM 87L Display status report for all active 87L
channels
1,B,P,A,O,2
COM 87L C or R Clear status report statistics for all active
87L channels
P,A,O,2
COM 87L FILES C or R Delete 87L channel recording files P,A,O,2
COM 87L WD C or R Clear both stages of 87L watchdog
counters
P,A,O,2
Table 15.32 COM c Command
Command
a
a
Parameter c is A, B, or M for Channel A, Channel B, and MIRRORED BITS communications
channels, respectively.
Description Access Level
COM A Return a summary report of the last 255 records in the
communications buffer for M
IRRORED BITS
communications Channel A.
1, B, P, A, O, 2
COM B Return a summary report of the last 255 records in the
communications buffer for M
IRRORED BITS
communications Channel B.
1, B, P, A, O, 2
COM M Return a summary report of the last 255 records in the
communications buffer for either M
IRRORED BITS
communications Channel A or Channel B when only
one channel is enabled.
1, B, P, A, O, 2
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