​.MajorDevStatus dotfield

Indicates when a major deviation alarm becomes active for the specified tag or alarm group. The default value is 0. When a major deviation alarm condition exists, the specified dotfield is set to 1. The value remains 1 until the major deviation alarm condition no longer exists.

This dotfield is often used in conjunction with the .Alarm and .Ack dotfields to determine the specific alarm state of a tag.

Category

Alarms

Usage

TagName.MajorDevStatus

Parameter

TagName

Any integer, real, or indirect analog tag.

Data Type

Discrete (read-only)

Valid Values

0 or 1

Example

The following IF-THEN statement runs when the .MajorDevStatus (Major deviation alarm) for the MyTag tag is equal to 1.

IF (MyTag.MajorDevStatus == 1) THEN

OperatorMessage="MyTag has gone into a Major Deviation Alarm";

ENDIF;

See Also

.AckDev, .AlarmDev, .AlarmMajDevDisabled, .AlarmMajDevEnabled, .AlarmMajDevInhibitor, .MajorDevPct, .MajorDevSet, .MinorDevStatus