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2 Visual Components Manuals

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

4.11.7.3.1.1 Alarm Number Filter / Group Number Filter<br />

A variable can be connected for the Alarm Number Filter and/or Group Number Filter fields. If a variable is<br />

connected to the group filter, then only alarms of this group are displayed if the group number is valid. If a<br />

variable is not connected to Alarm Number Filter or an invalid alarm number is read, then all alarms are<br />

displayed starting with offset = 0. If the alarm number is valid, all alarms starting with this alarm number are<br />

displayed.<br />

If a variable is only connected to the Alarm Number Filter, then alarms from all groups can be displayed<br />

beginning with the valid alarm number.<br />

4.11.7.3.2 Alarm History<br />

4.11.7.3.2.1 Filter Control Byte<br />

If a variable is connected, the filter control byte is simultaneously evaluated with all alarm filters (if used). If no<br />

variable is connected, then no filter is active.<br />

Filter byte Meaning<br />

0 No filter active, all entries are displayed.<br />

1 "Newer than" filter<br />

2 "Older than" filter<br />

3 Group filter<br />

4 Priority filter<br />

5 "Newer than" and group filter<br />

6 "Older than" and group filter<br />

7 "Newer than" and priority filter<br />

8 "Older than" and priority filter<br />

9 "Newer than", group, and priority filter<br />

10 "Older than" , group, and priority filter<br />

11 Group and priority filter<br />

4.11.7.3 Filtering the Displayed Alarm 415

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