10.32
SEL-311C Relay Instruction Manual Date Code 20060320
Serial Port Communications and Commands
Command Explanations
The TAR command does not remap the front-panel target LEDs, as is done in
some previous SEL relays. But execution of the equivalent TAR command via
the front-panel display does remap the bottom row of the front-panel target
LEDs (see Figure 11.3, pushbutton {OTHER}).
Command TAR SH1 10 is executed in the following example:
=>TAR SH1 10 <Enter>
79RS 79CY 79LO SH0 SH1 SH2 SH3 SH4
0 0 1 0 0 1 0 0
0 0 1 0 0 1 0 0
0 0 1 0 0 1 0 0
0 0 1 0 0 1 0 0
0 0 1 0 0 1 0 0
0 0 1 0 0 1 0 0
0 0 1 0 0 1 0 0
0 0 1 0 0 1 0 0
79RS 79CY 79LO SH0 SH1 SH2 SH3 SH4
0 0 1 0 0 1 0 0
0 0 1 0 0 1 0 0
=>
Note that Relay Word row containing the SH1 bit is repeated 10 times. In this
example, the reclosing relay is in the Lockout State (79LO = logical 1), and
the shot is at shot = 2 (SH2 = logical 1). Command TAR 31 will report the
same data since the SH1 bit is in Row 31 of the Relay Word.
TIM Command (View/Change Time)
TIM displays the relay clock. To set the clock, type TIM and the desired
setting, then press <Enter>. Separate the hours, minutes, and seconds with
colons, semicolons, spaces, commas, or slashes. To set the clock to 11:30 PM
enter:
=>TIM 23:30:00 <Enter>
23:30:00
=>
Table 10.9 TAR Command Options
TAR
n k
Shows Relay Word row number n (0–51). k is an optional parameter to
specify the number of times (1–32767) to repeat the Relay Word row
display. If k is not specified, the Relay Word row is displayed once.
TAR
name k
Shows Relay Word row containing Relay Word bit name (e.g.,
TAR 50P1 displays Relay Word Row 3). Valid names are shown in
Table 9.5 and Table 9.6. k is an optional parameter to specify the number
of times (1–32767) to repeat the Relay Word row display. If k is not
specified, the Relay Word row is displayed once.
TAR R
Clears front-panel tripping target LEDs: TRIP, TIME, COMM, SOTF, 51, A, B, C,
G, Zone1, Zone2, Zone3, and Zone4. Unlatches the trip logic for testing pur-
poses (see Figure 5.1). Shows Relay Word Row 0.
Table 10.10 SEL-311C Relay Word and Its Correspondence to TAR Command
TAR 0
(Front-Panel LEDs)
EN TRIP TIME COMM SOTF RS LO 51
TAR
1 (Front-Panel LEDs)
A B C G ZONE1 ZONE2 ZONE3 ZONE4
NOTE: After setting date or time,
allow at least 60 seconds before
powering down the relay or the new
setting may be lost.