Name

Type

Description

ReadValueId

structure

Identifier for an item to read or to monitor.

nodeId

NodeId

NodeId of a Node.

attributeId

IntegerId

Id of the Attribute. This shall be a valid Attribute id. The IntegerId is defined in 7.19. The IntegerIds for the Attributes are defined in OPC 10000-6.

indexRange

NumericRange

This parameter is used to identify a single element of an array, or a single range of indexes for arrays. The array in this context includes String and ByteString. If a range of elements is specified, the values are returned as a composite. The first element is identified by index 0 (zero). The NumericRange type is defined in 7.27.

This parameter is null or empty if the specified Attribute is not an array. However, if the specified Attribute is an array, and this parameter is null or empty, then all elements are to be included in the range.

dataEncoding

QualifiedName

This parameter is no longer used.

Clients shall set it to null or empty.

The Server shall ignore the parameter.