Sel SEL-421 - Sta; Sta a; STA C and STA R

R.9.48
SEL-421 Relay Reference Manual Date Code 20111215
ASCII Command Reference
Description of Commands
STATUS
The STATUS command reports relay status information that the relay derives
from internal diagnostic routines and self-tests. See Relay Self-Tests on
page U.6.38 for information on relay diagnostics.
STA
The STA command with no options displays a short-form relay status report.
Items in the STA report are the header, failures, warnings, SEL
OGIC control
equation programming environment errors, and relay operational status. See
Checking Relay Status on page U.4.10 for information on relay status reports.
If you change an I/O interface board, the relay detects the new configuration
and initiates a status warning. When you issue the STA command at Access
Level 2, the relay responds to this situation,
Accept new hardware
configuration (Y/N)?
If you answer Y <Enter>, the relay responds, New
configuration accepted
. If you answer N <Enter>, the relay responds,
Command aborted.
STA A
Use the STA A command to view the entire relay status report. Items in the
full status report include the short-form status report items plus data on A/D
(analog/digital) channel offsets, power supply voltages, temperature,
communications interfaces, and time-source synchronization.
STA C and STA R
The STA C and STA R commands reboot the relay. Thus, these commands
clear a transient failure should this unlikely event occur. Options C and R are
identical. Contact your Technical Service Center or the SEL Factory before
using this command.
Table 9.124 SNS Command
Command Description Access Level
SNS Send the names of SER elements. 0, 1, B, P, A, O, 2
Table 9.125 STA Command
Command Description Access Level
STA Return the relay status. 1, B, P, A, O
STA Return the relay status and show a new hard-
ware configuration prompt.
2
Tabl e 9. 12 6 STA A C omm and
Command Description Access Level
STA A Display all items of the status report. 1, B, P, A, O, 2
Table 9.127 STA C and STA R Command
Command Description Access Level
STA C Reset the relay. 2
STA R Reset the relay. 2