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4.2.31.17   Dev. Tag Name

Deviation Alarm Reference Tag Name is the tag used as a comparison to this tag.  Deviation Alarming generates an alarm on the difference in value between two tags (expr [ tag1 - tag2]).  The most common use is deviation between Setpoint and Measurement in a PID controller. If this field is blank, no deviation alarm will occur.         

Range:              tagname or BLOCK:PARAMETERname
Units:               
Field Type:        Text
Tag fields:         .ADVTAG