Reference

OpcReadNodesHistoryRequest Members

Type

OpcReadNodesHistoryRequest

Namespace

Opc.UaFx.Services

Assembly

Opc.UaFx.Advanced.dll

Package

Opc.UaFx.Advanced v2.59.0

Also in

Opc.UaFx.Client

Inherits members from OpcServiceRequest<HistoryReadValueId, HistoryReadValueIdCollection>, OpcServiceRequest.

Constructors

OpcReadNodesHistoryRequest

4 overloads

Overload	Description
OpcReadNodesHistoryRequest(OpcReadHistoryDetails, IEnumerable<HistoryReadValueId>)
OpcReadNodesHistoryRequest(OpcReadHistoryDetails, params HistoryReadValueId[])
OpcReadNodesHistoryRequest(IOpcServiceRequestHeader, OpcReadHistoryDetails, IEnumerable<HistoryReadValueId>)since v2.7
OpcReadNodesHistoryRequest(IOpcServiceRequestHeader, OpcReadHistoryDetails, params HistoryReadValueId[])since v2.7

Exceptions (all overloads)

Exception	Condition
ArgumentNullException

OpcReadNodesHistoryRequest(OpcReadHistoryDetails, IEnumerable<HistoryReadValueId>)

[CLSCompliant(false)]
public OpcReadNodesHistoryRequest(
    OpcReadHistoryDetails details,
    IEnumerable<HistoryReadValueId> commands)

<CLSCompliant(False)>
Public Sub New(
    details As OpcReadHistoryDetails,
    commands As IEnumerable(Of HistoryReadValueId))

Parameters

Name	Type	Description
details	OpcReadHistoryDetails
commands	IEnumerable<HistoryReadValueId>

OpcReadNodesHistoryRequest(OpcReadHistoryDetails, params HistoryReadValueId[])

[CLSCompliant(false)]
public OpcReadNodesHistoryRequest(
    OpcReadHistoryDetails details,
    params HistoryReadValueId[] commands)

<CLSCompliant(False)>
Public Sub New(
    details As OpcReadHistoryDetails,
    ParamArray commands As HistoryReadValueId())

Parameters

Name	Type	Description
details	OpcReadHistoryDetails
commands	params HistoryReadValueId[]

OpcReadNodesHistoryRequest(IOpcServiceRequestHeader, OpcReadHistoryDetails, IEnumerable<HistoryReadValueId>)

since v2.7

[CLSCompliant(false)]
public OpcReadNodesHistoryRequest(
    IOpcServiceRequestHeader header,
    OpcReadHistoryDetails details,
    IEnumerable<HistoryReadValueId> commands)

<CLSCompliant(False)>
Public Sub New(
    header As IOpcServiceRequestHeader,
    details As OpcReadHistoryDetails,
    commands As IEnumerable(Of HistoryReadValueId))

Parameters

Name	Type	Description
header	IOpcServiceRequestHeader
details	OpcReadHistoryDetails
commands	IEnumerable<HistoryReadValueId>

OpcReadNodesHistoryRequest(IOpcServiceRequestHeader, OpcReadHistoryDetails, params HistoryReadValueId[])

since v2.7

[CLSCompliant(false)]
public OpcReadNodesHistoryRequest(
    IOpcServiceRequestHeader header,
    OpcReadHistoryDetails details,
    params HistoryReadValueId[] commands)

<CLSCompliant(False)>
Public Sub New(
    header As IOpcServiceRequestHeader,
    details As OpcReadHistoryDetails,
    ParamArray commands As HistoryReadValueId())

Parameters

Name	Type	Description
header	IOpcServiceRequestHeader
details	OpcReadHistoryDetails
commands	params HistoryReadValueId[]

Properties

Details

public OpcReadHistoryDetails Details { get; }

Public ReadOnly Property Details As OpcReadHistoryDetails

Property value

OpcReadHistoryDetails

ReleaseContinuationPoints

public bool ReleaseContinuationPoints { get; set; }

Public Property ReleaseContinuationPoints As Boolean

Property value

Boolean

TimestampsToReturn

Gets or sets a value which specifies the timestamps to be returned for each requested Value attribute.

public OpcTimestampsToReturn TimestampsToReturn { get; set; }

Public Property TimestampsToReturn As OpcTimestampsToReturn

Property value

OpcTimestampsToReturn

One of the members defined by the OpcTimestampsToReturn enumeration except Neither. The default value is Source for OpcReadNodeHistoryProcessedDetails and Both for all other details.

Remarks

Using the value Neither as the timestamps to return is not valid and results into a response with the status code BadTimestampsToReturnInvalid. The same applies to processed data requested with any value other than Source (OPC 10000-13, 5.4.3.1). If a server rejects such a request, the OpcClient repeats it once with Source and updates this property.

Methods

Validate

protected · override · since v2.50

protected override void Validate()

Protected Overrides Sub Validate()

Overrides

Validate