This Structured DataTypeis used to represent a human-readable representation of an Enumeration. Its elements are described in Table 32. When this type is used in an array representing human-readable representations of an enumeration, each Value shall be unique in that array.

Table 32– EnumValueType Definition

Name

Type

Description

EnumValueType

structure

value

Int64

The Integer representation of an Enumeration.

displayName

LocalizedText

A human-readable representation of the Value of the Enumeration.

description

LocalizedText

A localized description of the enumeration value. This field can contain an empty string if no description is available.

Note that the EnumValueTypehas been defined with an Int64 Value to meet a variety of usages. When it is used to define the string representation of an Enumeration DataType, the value range is limited to Int32, because the Enumeration DataTypeis a subtype of Int32. OPC 10000-8specifies other usages where the actual value might be between 8 and 64 Bit.