This OPC UA Property, of DataType OptionSet, is the AlarmValues parameter for the object’s event algorithm.

The AlarmValues value represents a set of values that are considred off-NORMAL.

The OptionSet DataType contains the bitmask that defines the bits of the monitored value that are significant for comparison with the values in the AlarmValues set. The value is bitwise AND’ed with the monitored value before comparison with the AlarmValues values.