Schweitzer Engineering Laboratories SEL-421-4 - Page 1257

14.51
Date Code 20171006 Instruction Manual SEL-400 Series Relays
ASCII Command Reference
Command Description
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 equa-
tion programming environment errors, and relay operational status. See Checking
Relay Status on page 3.11 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 with
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.
STA S
Use the STA S command to view all SELOGIC control equation storage and exe-
cution capacity and operating errors.
Table 14.116 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 hardware configura-
tion prompt.
2
Table 14.117 STA A Command
Command Description Access Level
STA A Display all items of the status report. 1, B, P, A, O, 2
Table 14.118 STA C and STA R Command
Command Description Access Level
STA C Reset the relay. 2
STA R Reset the relay. 2
Table 14.119 STA S Command
Command Description Access Level
STA S Display detailed SELOGIC control equation error information. 1, B, P, A, O, 2