R.9.2
SEL-421 Relay Reference Manual Date Code 20111215
ASCII Command Reference
Description of Commands
Description of Commands
2ACCESS
Use the 2AC command to gain access to Access Level 2 (full relay control).
See Access Levels on page U.4.6 for more information.
AACCESS
Use the AAC command to gain access to Access Level A (automation). See
Access Levels on page U.4.6 for more information.
ACCESS
Use the ACC command to gain access to Access Level 1 (monitor). See
Access Levels on page U.4.6 for more information.
BACCESS
Use the BAC command to gain access to Access Level B (breaker). See
Access Levels on page U.4.6 for more information.
BNAME
The BNA command produces ASCII names of all relay status bits for Fast
Meter Compressed ASCII. See Section 5: SEL Communications Protocols for
more information on Fast Meter and the Compressed ASCII command set.
BREAKER
Use the BREAKER command to display circuit breaker reports and the
circuit breaker history reports. You can also preload accumulated breaker
monitor data. The BRE command also resets the circuit breaker monitor data.
To use the BRE command, you must enable the circuit breaker monitor with
monitor settings EB1MON := Y and EB2MON :=Y for one and two circuit
breaker applications, respectively. See Circuit Breaker Monitor on page A.2.1
for more information.
Tabl e 9. 1 2 AC Com m and
Command Description Access Level
2AC Go to Access Level 2 (full relay control). 1, B, P, A, O, 2
Table 9.2 AAC Command
Command Description Access Level
AAC Go to Access Level A (automation). 1, B, P, A, O, 2
Table 9.3 ACC Command
Command Description Access Level
ACC Go to Access Level 1 (monitoring). 0, 1, B, P, A, O, 2
Table 9.4 BAC Command
Command Description Access Level
BAC Go to Access Level B (breaker). 1, B, P, A, O, 2
Table 9.5 BNA Command
Command Description Access Level
BNA Display ASCII names of all relay status bits. 0, 1, B, P, A, O, 2
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