14.13
Date Code 20171006 Instruction Manual SEL-400 Series Relays
ASCII Command Reference
Command Description
COM
c
C and COM
c
R
The COM c C and COM c R commands clear/reset the communications buffer
data for the specified Channel c. Options C and R are identical.
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.
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.
Table 14.35 is a representative list of options for listing records in the communi-
cations buffer.
Ta b l e 1 4. 34 CO M
c
C and COM
c
R Command
Command Description Access Level
COM A C Clear/reset communications buffer data for MIRRORED 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
B
ITS communications Channel A or Channel B when only
one channel is enabled.
P, A, O , 2
Ta b l e 1 4. 35 CO M
c
L Command
Command Description Access Level
COM A L Display all available records from MIRRORED BITS com-
munications 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 BITS commu-
nications 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 BITS commu-
nications Channel A or Channel B when only one chan-
nel is enabled; show the records with Record m at the top
of the report through Record n at the bottom 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 communica-
tions Channel A on the date date1.
1, B, P, A, O, 2
COM B L date1
date2
c
Display the records from MIRRORED BITS communica-
tions 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
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