Table 69 shows the mapping for the FdtParameter.

Table 69 – FdtParameter mapping

OPC

FDT

Attribute

Interface

Method

Data member

Description

NodeClass

Fixed value: Variable

BrowseName

IData

<GetDataInfo>

Name

DisplayName

IData

<GetDataInfo>

Label

Description

IData

<GetDataInfo>

Descriptor

WriteMask

Generated by Frame

UserWriteMask

IData

<GetDataInfo>

IsChangeEnabled

Generated by Frame

Value

IData

<Read> / <Write>

DataType

IData

<GetDataInfo>

DataTypeInfo

ValueRank

IData

<GetDataInfo>

DataTypeInfo

Indicates whether the datatype is an array.

ArrayDimensions

IData

<GetDataInfo>

DataTypeInfo

If the datatype is an array, then provide dimensions.

AccessLevel

IData

<GetDataInfo>

IsReadable, IsWritable

Generated by Frame

UserAccessLevel

IData

<GetDataInfo>

IsReadable, IsWritable

Generated by Frame

MinimumSamplingInterval

Defined by Frame.

Historizing

Defined by Frame.

BrowseName

2:EURange

IData

<GetDataInfo>

RangeDataRefs

2:EngineeringUnits

IData

<GetDataInfo>

UnitDataRef

0:HasComponent

May be used for structured datatypes (StructDataGroup)

2:HasDefinition

Defined by Frame.

2:ValuePrecision

Defined by Frame.

DisplayFormat

IData

<GetDataInfo>

DisplayFormat

AlarmType

IData

<GetDataInfo>

AlarmType

RangeType

IData

<GetDataInfo>

RangeType

SubstitutionType

IData

<GetDataInfo>

SubstitutionType

ApplicationId

IData

<GetDataInfo>

ApplicationId

SemanticInfo

IData

<GetDataInfo>

SemanticInfos

DataRef

IData

<GetDataInfo>

DataRefs

IOSignalRef

IData

<GetDataInfo>

IOSignalRef

AlarmDataRef

IData

<GetDataInfo>

AlarmDataRefs

SubstituteDataRef

IData

<GetDataInfo>

SubstituteDataRef