Enable/disable major deviation alarms

The .AlarmMajDevEnabled and .AlarmMajDevDisabled dotfields enable or disable major deviation alarms for a tag or alarm group based upon their respective values. The major deviation alarm states associated with both dotfields are the inverse of each other. In the case of .AlarmMajDevEnabled, a value of 1 enables major deviation alarms for a tag or alarm group. An .AlarmMajDevDisabled value of 1 disables major deviation alarms for a tag or alarm group.

When either dotfield enables major deviation alarms for an alarm group, all tags that belong to the group have major deviation alarms enabled. When either dotfield disables major deviation alarms, all major deviation alarms are ignored. The major deviation alarms are not stored in alarm memory, nor are they written to disk.