7 Configuration
152
Activation/type, limit value, switching differential
Alarm/Event list
All events and their time of occurrence are added to the event list. If the event is an alarm, newly occur-
ring alarms and their time of occurrence are additionally added to the alarm list. If an alarm is made in-
active, it is removed from the alarm list and the time of removal is added to the event list.
Alarm suppression, alarm delay
Alarm suppression and alarm delay prevent or delay entries being added to the event list and alarm list,
activation of the collective alarm, the display in the status bar, and the color change (analog value, plotter
trace).
Alarm delay
During an out-of-limit case, the alarm signal is only activated after the delay time has expired. If the limit
value infringement no longer exists at that point, the time for the next limit value infringement restarts
from zero.
Response in case of a fault
If the input signal returns an error value, the alarm signal is activated as long as limit value monitoring is
enabled. For this to happen, a min. or max. alarm must be configured (the limit value is unimportant
here). Alarm suppression is also taken into consideration in this case, but not the alarm delay.
(1) Limit value for min. alarm 1 Alarm signal on
(2) Limit value for max. alarm 0 Alarm signal off
(3) Switching differential
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