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The alarm text is displayed as long as the alarm bit is set. Acknowledgement is not possible.<br />

Acknowledgement possible = yes<br />

Acknowledgement necessary = no<br />

Allow acknowledge while active = yes<br />

The alarm text is displayed as long as the alarm bit is set. Acknowledgement is then allowed<br />

while the alarm is active. The alarm is taken out of the list.<br />

Acknowledgement possible = yes<br />

Acknowledgement necessary = yes<br />

Allow acknowledge while active = yes<br />

If an alarm is displayed, then it is only removed from the list if it is acknowledged − regardless of<br />

whether the alarm bit is reset or not.<br />

Acknowledgement is also allowed while the alarm is active. The alarm is taken out of the list.<br />

4.11.5.2.4 Bypass Allowed<br />

This entry determines whether bypassing this alarm is possible. An alarm can be bypassed or have a bypass<br />

cleared in the alarm overview. If an alarm is bypassed, it is removed from the alarm list regardless of the alarm<br />

status. If a bypass is cleared, the alarm is displayed again corresponding to the alarm status.<br />

4.11.5.2.5 Trigger Group Alarm<br />

If this entry is selected, this alarm is included in the evaluation of the group alarm. The group alarm is a sum<br />

alarm for the group and indicates whether one of the groups, having an alarm with this option marked, is to be<br />

flagged (see also Group Alarms).<br />

4.11.5.2.6 Latched Alarm<br />

This entry determines whether the time for the first occurrence of the alarm should be displayed. If the alarm<br />

status changes repeatedly, then the time of the first occurrence is displayed in the alarm list, depending on the<br />

acknowledgement configuration.<br />

4.11.5.2.7 Disable Printing When...<br />

This entry determines that an alarm of a corresponding type does not appear in the historical alarm list or in a<br />

printout. Other output formats for the alarms are not affected by it.<br />

4.11.6 Alarm <strong>Visual</strong>ization<br />

A sequence of special fields exists which can be used according to user needs and existing hardware (screen<br />

size, etc) to display triggered alarms on the visualization device.<br />

To insert these types of fields, an additional button is enabled in the toolbar when the alarm system is activated.<br />

Clicking on the button opens a selection list showing the following available alarm fields:<br />

Introduction to <strong>Visual</strong> <strong>Components</strong> 2.3<br />

Each of these fields has special properties and application possibilities. The following sections describe the<br />

properties and possibilities for each of these fields.<br />

Note:<br />

Only one alarm field can be used per picture. For example, it is not possible at present to use both an alarm line<br />

406 4.11.5.2 Alarm Properties

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