Operation
2021 Microchip Technology Inc.
DS50003057A-page 21
3.7
EVENT LOGGING
The CsIII maintains a log of alarm indicators, including major and minor alarms and unit
restart events. The Event Log is maintained in battery-backed non-volatile memory in
order to retain persistence through power cycles to enable forensic debugging in event
of unit failure. Logged events include the activation of an alarm and the subsequent
clearing of an alarm, whether automatically, due to the removal of the alarm condition,
or due to user interaction.
To access the Event Log, select Event Log from Monitor3’s View menu.
FIGURE 3-7:
Event Log.
The Event Log is downloaded from the instrument when the Event Log panel is loaded
or when the user clicks Refresh View. Note that downloading the Event Log from the
CsIII can take up to several minutes, depending on the number of events and the con
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nection speed. Because of this necessary delay, the Event Log display panel is not
automatically updated once initially displayed.
All events are identified by a time tag, indicating the time of the appearance or disap
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pearance of the alarm condition. The time tag is composed of the date and time, as
realized by the CsIII event log clock and the total number of operating hours on the
instrument (248 in the example above). Because the Event Log clock is restarted upon
power failure, the Unit Restart events necessarily occur at time --/--/----00:00, as shown
in the example above. After the Event Log clock has been set, subsequent events are
time tagged appropriately. To set the Event Log clock to the time on your PC, click Set
from PC Clock.
The non-volatile Event Log storage contains 128 events. After the log is fully populated,
subsequent events are discarded. For this reason, it is useful to periodically check and
clear the Event Log, particularly in installations where the power to the instrument is
frequently cycled, thus producing numerous Unit Restart events. To clear the nonvola
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tile Event Log, press the Clear Instrument button. In permanent installations, Microchip
recommends clearing the Event Log and setting the Event Log Clock upon installation.
3.8
FACTORY SETTINGS
There are several settings available from the Factory Settings panel on the System
menu. Generally, these settings should not be modified, except by trained personnel,
but are included in the Monitor3 interface in order to accommodate particular applica
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tions.
Summary of Contents for 4310B
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