R.9.11
Date Code 20111215 Reference Manual SEL-421 Relay
ASCII Command Reference
Description of Commands
COM c L m n and COM c L date1 date2
Use COM c L to list the records in the communications buffer in a specified
manner. The relay returns the list of records in rows. You can specify a range
of buffer records in forward or reverse chronological order or in forward or
reverse date order. Date parameter entries depend on the setting DATE_F
format you chose in the relay Global settings. See Section 10: Settings for
more information.
The relay organizes the records in rows in a 256-entry buffer in newest to
oldest time order. The relay puts the newest record in the buffer and discards
the oldest record if the buffer is full.
Tab le 9.31 is a representative list of options for listing records in the
communications buffer.
Table 9.30 COM c C and COM c R Command
Command Description Access Level
COM A C Clear/reset communications buffer data for
M
IRRORED BITS communications Channel A.
P, A, O, 2
COM B R Clear/reset communications buffer data for
M
IRRORED BITS communications Channel B.
P, A, O, 2
COM M C Clear/reset communications buffer data for either
M
IRRORED BITS communications Channel A or
Channel B when only one channel is enabled.
P, A, O, 2
Table 9.31 COM c L Command
Command Description Access Level
COM A L Display all available records from
M
IRRORED BITS communications Channel
A; the most recent record is Row 1 (at the
top of the report) and the oldest record is at
the bottom of the report.
1, B, P, A, O, 2
COM B L k
a
a
Parameter k indicates a specific number of communications buffer records.
Display the first k records for MIRRORED
B
ITS communications Channel B; the most
recent record is Row 1 (at the top of the
report) and the oldest record is at the bot-
tom of the report.
1, B, P, A, O, 2
COM M L m n
b
b
Parameters m and n are communications buffer row numbers.
Display the records for either MIRRORED
B
ITS communications Channel A or Chan-
nel B when only one channel is enabled;
show the records with Record m at the top
of the report through Record n at the bot-
tom of the report.
1, B, P, A, O, 2
COM A L date1
c
c
Enter date1 and date2 in the same format as Global setting DATE_F.
Display the records from MIRRORED BITS
communications Channel A on the date
date1.
1, B, P, A, O, 2
COM B L date1 date2
c
Display the records from MIRRORED BITS
communications Channel B between the
dates date1 and date2. The date listed first,
date1, is at the top of the report; the date
listed second, date2, is at the bottom of the
report.
1, B, P, A, O, 2