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10-28
Serial Port Communications and Commands
Date Code 20011205
SEL-311B Instruction Manual
STA Command (Relay Self-Test Status)
The
STA
command displays the status report, showing the relay self-test information.
To view a status report, enter the command:
=>
STA
n
<ENTER>
where
n
is an optional parameter to specify the number of times (1–32767) to repeat the status
display. If
n
is not specified, the status report is displayed once. The output of an SEL-311B
Relay with wye-connected voltage inputs and no extra I/O board is shown:
=>STA <ENTER>
STA <ENTER>
STA <ENTER>
STA <ENTER>
SEL-311B Date: 08/18/00 Time: 16:46:08.998
EXAMPLE: BUS B, BREAKER 3
FID=SEL-311B-R100-V0-Z001001-D20000818 CID=F30B
SELF TESTS
W=Warn F=Fail
IA IB IC IP VA VB VC VS MOF
OS 1 0 0 -1 1 -1 1 0 -1
+5V_PS +5V_REG -12V_PS -15V_PS -15V_PS
PS 4.92 4.98 -5.02 11.87 -11.98 14.89 -14.95
TEMP RAM ROM A/D CR_RAM EEPROM IO_BRD
28.1 OK OK OK OK OK N/A
Relay Enabled
=>
STA Command Row and Column Definitions
FID
FID is the firmware identifier string. It identifies the firmware revision.
CID
CID is the firmware checksum identifier.
OS
OS = Offset; displays measured dc offset voltages in millivolts for the current and
voltage channels. The MOF (master) status is the dc offset in the A/D circuit when a
grounded input is selected.
PS
PS = Power Supply; displays power supply voltages in Vdc for the power supply
outputs.
TEMP
Displays the internal relay temperature in degrees Celsius.
RAM, ROM, CR_RAM (critical RAM), and EEPROM
These tests verify that the relay memory components are functional. The columns
display OK if memory is functioning properly; the columns display FAIL if the
memory area has failed.
A/D
Analog to Digital converter status.
IO_BRD N/A
W (Warning) or F (Failure) is appended to the values to indicate an out-of-tolerance condition.
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