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This will be configured as single common database where alarms can be acknowledged commonly from any PC without requiring any program or software part. 

Operator Interface software will support use of event time label instead of its own time labels for Alarm events where time is stamped by field control device for maintaining more accuracy. Operator interface will support accuracy at milli second level for these time labels. 

## Analog Alarms 

An alarm can be configured for each analog tag where relevant limits can be identified for following requirements. 

 Low-low, low, high, high-high, deviation lo, deviation hi, variation ratio 

All analog alarm limits will be able to be adjusting without closing system. Changes will be recorded to database automatically such that alarm adjustments will be correct when system is restarted. 

Use of deadzone values will be supported in analog alarms. 

## Digital Alarms 

Alarm can be assigned for each following condition over each digital tag. 

 Tag ON 

 Tag OFF 

Alarm can be configured with respect to combination of more than one digital tag and each status combination will be able to be configured as alarm output. Additionally if multiple digital alarm is enabled in an alarm version, alarm will be generated if other status is switched. 

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## Alarm Viewing 

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All alarms and/or latest alarms can be viewed or acknowledged in any page together with proper priorities. 

There will be more than one alarm priority level or category within software. Priority of alarm can be specified by color type of text in alarm message in screen. Color codes for alarm messages with 

