Value

Name

Description

1

UAAI_NodeID

The canonical identifier for the node.

2

UAAI_NodeClass

The class of the node.

3

UAAI_BrowseName

A non-localized, human readable name for the node.

4

UAAI_DisplayName

A localized, human readable name for the node.

5

UAAI_Description

A localized description for the node.

6

UAAI_WriteMask

Indicates which attributes are writable.

7

UAAI_UserWriteMask

Indicates which attributes are writable by the current user.

8

UAAI_IsAbstract

Indicates that a type node may not be instantiated.

9

UAAI_Symmetric

Indicates that forward and inverse references have the same meaning.

10

UAAI_InverseName

The browse name for an inverse reference.

11

UAAI_ContainsNoLoops

Indicates that following forward references within a view will not cause a loop.

12

UAAI_EventNotifier

Indicates that the node can be used to subscribe to events.

13

UAAI_Value

The value of a variable.

14

UAAI_DataType

The node id of the data type for the variable value.

15

UAAI_ValueRank

The number of dimensions in the value.

16

UAAI_ArrayDimensions

The length for each dimension of an array value.

17

UAAI_AccessLevel

How a variable may be accessed.

18

UAAI_UserAccessLevel

How a variable may be accessed after taking the user's access rights into account.

19

UAAI_MinimumSamplingInterval

Specifies (in milliseconds) how fast the server can reasonably sample the value for changes.

20

UAAI_Historizing

Specifies whether the server is actively collecting historical data for the variable.

21

UAAI_Executable

Whether the method can be called.

22

UAAI_UserExecutable

Whether the method can be called by the current user.

23

UAAI_DataTypeDefinition

The DataTypeDefinition Attribute is used to provide the meta data and encoding information for custom DataTypes.

24

UAAI_RolePermission

Permissions that apply to a Node for all Roles which have access to the Node.

25

UAAI_UserRolePermissions

Permissions that apply to a Node for all Roles granted to current Session.

26

UAAI_AccessRestriction

AccessRestrictions that apply to a Node.

27

UAAI_AccessLevelEx

The AccessLevelEx Attribute is used to indicate how the Value of a Variable can be accessed (read/write), if it contains current and/or historic data and its atomicity.

28-32

Reserved for future use from OPC Foundation