Functional Description and Specifications RUB SW
Page 31
2.6.2
Alarms by GPO Outputs
The module has four GPOs (General Purpose Output). Basically, the functions of these outputs
are programmable utilizing the
Keys
function of one of the configuration tools.
(
→
Chapter
‘
”
Keys
”
: Keys and Lamps, LEDs and GPOs
’
)
The following functions for the GPOs are provided to indicate errors and failures:
Signal 1 Failure
Recommended GPO:
GPO_1
Signal 2 Failure
Recommended GPO:
GPO_2
Active, as long as there is any major word clock error at
CLOCK IN 1
or
CLOCK IN 2
respectively. In detail, this GPO becomes active if one of the following errors has
occurred and this error has been
enabled to indicate a failure (checkbox “
disable
“
not
checked):
signal loss
frequency
signal to pps drift
Please refer to chap
ter ‘
Word Clock Monitoring
’
for a detailed error description.
Word Clock Warning
Recommended GPO:
GPO_3
Active, as long as there is any error at a word clock signal pair. In detail, this GPO
becomes active if one of the following errors has occurred and this error has been
enabled to indicate a failure (checkbox “
disable
“
not checked):
word clock frequency difference
word clock signal to signal drift
Please refer to chapter
‘
Word Clock Monitoring
’
for a detailed error description.
System Warning
Recommended GPO:
GPO_4
In detail, this GPO becomes active if one of the following errors has occurred and this
error has been enabled to indi
cate a failure (checkbox “
disable
“
not checked):
pps timeout
(real-time reference)
power on
(self test)
pps timing
(real-time reference)
relays
(self test)
serial timing
(real-time reference)
serial sequence
(real-time reference)
Please refer to chapter ‘
Real Time Reference Monitoring
’
and chapter
‘
Self Test
’
.
System Error
Available with firmware version 2.10.19 or higher
Active,
as long as the “
overall errors
” counter has a count value > 0.
The error indication cannot be disabled, so this GPO becomes active in case of any
error, i.e. word clock errors, errors with respect to the real-time reference, and errors
with respect to the self test.
System Failure
Available with firmware version 2.10.19 or higher
Active, as long as the “
overall failures
” counter ha
s a count value > 0.
Each individual error can raise this alarm provided this error has been enabled to
indicate a failure (ch
eckbox “
disable
“
not checked). Depending on this configuration,
word clock errors, errors with respect to the real-time reference, and errors with respect
to the self test, may activate this GPO output.
More GPO functions:
→
Chapter
‘
”
Keys
”
: Keys and Lamps, LEDs and GPOs
’
.
