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Alarm
(
ALARM
).
Alarm
is special complex parameter with its own editor dialog. Each
alarm
parameter are composed from several sub-parameters. These are:
•
Low threshold
. This is lower alarm limit for measured signal. If the value stays below this
limit for certain time “low alarm” event will be generated.
•
High threshold
. This is higher alarm limit for measured signal. If the value stays above this
limit for certain time “high alarm” event will be generated.
•
Trigger time
. Time to wait before “low alarm” or “high alarm” event is generated.
•
Release time
. Time to wait before “idle alarm” event is generated.
•
Set of
notification channels
. Denotes the way the user is notified for the alarm event.
Possible channels are:
SMS
(with GSM modem option),
,
SMNP
and
GPO
.
Example:
Content of alarm editor dialog with
RF Alarm
shown. The bargraph shows whole signal range
of the
alarm
. The highlighted area denotes permitted signal region. If current signal value (pos. 4)
falls in this region no alarm event will be generated. The basic elemets are:
1. Lower limit of the alarm range.
2. Low threshold value.
3. Value unit.
4. Current value of the signal.
5. High threshold.
6. Higher limit of the alarm range.
Button assignments for
ALARM
in edit dialog:
OK – Accept the value and exits edit dialog.
Up/Down – Changes the value of selected (highlighted) sub-parameter. The value always stays
in permitted parameter range. Low threshold value cannot exceed the high threshold value and
vice-versa.
Left/Right – Selects previous/next sub-parameter of the
alarm
.
SB2
– Toggles ON/OFF low alarm event generation.
SB3
– Toggles ON/OFF high alarm event generation.
SB4
– Discards altered sub-parameter values and cancels edit mode.
