Schweitzer Engineering Laboratories SEL-351 - TAR Command (Display Relay Element Status)

10-30 Serial Port Communications and Commands Date Code 20001006
SEL-351 Instruction Manual
If you select “N” or “n”, the relay displays:
Canceled
and aborts the command.
If you select “Y”, the relay displays:
Rebooting the relay
The relay then restarts (just like powering down, then powering up relay), and all diagnostics are
rerun before the relay is enabled.
Refer to Table 13.1 in Section 13: Testing and Troubleshooting for self-test thresholds and
corrective actions.
TAR Command (Display Relay Element Status)
The TAR command displays the status of front-panel target LEDs or relay elements, whether they
are asserted or deasserted. The elements are represented as Relay Word bits and are listed in rows
of eight, called Relay Word rows. The first 2 rows correspond to Table 10.7. The remaining rows
correspond to the Relay Word as described in Section 9: Setting the Relay.
A Relay Word bit is either at a logical 1 (asserted) or a logical 0 (deasserted). Relay Word bits are
used in SELOGIC Control Equations. See Section 9: Setting the Relay and Appendix G: Setting
SELOGIC Control Equations.
The TAR command does not remap the front-panel target LEDs, as is done in some previous SEL
relays. But the 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).
The TAR command options are:
TAR n k Shows Relay Word row number n (0 - 45, 49, or 53,
depending on firmware version). 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 50C displays Relay Word Row 5). Valid names
are shown in Table 10.7, and Table 9.4 through Table 9.9.
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.
Courtesy of NationalSwitchgear.com