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Alarm Viewer
Figure 14.6
–
Alarm Viewer
The currently selected entry is indicated by a yellow highlight which can be moved up or down
by touching the arrow buttons or by directly touching an entry. If more entries exist than can
fit on the page, a scroll bar is displayed on the right side that also indicates the current
relative position.
The current state of the displayed alarm is indicated by its color and optionally by an
abbreviated indicator after the date/time stamp (ALM, ACK, RTN). The operator can
acknowledge an alarm by selecting it from the list and touching the ACK button. The operator
can also clear an alarm if that function is enabled in the alarm object. If not enabled, the
Clear
buttons are grayed and do not respond to touch. Once view operations are complete, simply
touch the
Esc
button to remove the pop-up alarm viewer.
NOTE: OCS registers %SR181 and %SR182 are available for ladder use, which indicate
presence of unacknowledged or acknowledged alarm (respectively). The screen designer may
implement these registers to switch screens or activate the beeper to attract the operator’s
attention.