The NodeOPCUA API The NodeOPCUA API

  • API Docs for Version: 0.1.0-pre

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    HistoryReadRequest Class

    Extends BaseUAObject
    Defined in: packages\node-opcua-service-history\_generated_\_auto_generated_HistoryReadRequest.js:29
    Module: opcua.address_space.types

    Constructor

    HistoryReadRequest

    (
    • options
    )

    Defined in packages\node-opcua-service-history\_generated_\_auto_generated_HistoryReadRequest.js:29

    Parameters:

    • options Object
      • [requestHeader] RequestHeader optional
      • [historyReadDetails] ExtensionObject optional

        Maximum age of the value to be read in milliseconds

      • [timestampsToReturn= 3] TimestampsToReturn optional

        An enumeration that specifies the Timestamps to be returned for each requested Variable Value Attribute.

      • [releaseContinuationPoints] Boolean optional
      • [nodesToRead] HistoryReadValueId[] optional

        List of Nodes and their Attributes to read. For each entry in this list, a StatusCode is returned, and if it indicates success, the Attribute Value is also returned.

    Methods

    binaryStoreSize

    () Number

    Inherited from BaseUAObject: packages\node-opcua-factory\src\factories_baseobject.js:49

    Calculate the required size to store this object in a binary stream.

    Returns:

    Number:

    decode

    (
    • stream
    • [option]
    )

    Defined in packages\node-opcua-service-history\_generated_\_auto_generated_HistoryReadRequest.js:130

    decode the object from a binary stream

    Parameters:

    encode

    (
    • stream
    )

    Defined in packages\node-opcua-service-history\_generated_\_auto_generated_HistoryReadRequest.js:115

    encode the object into a binary stream

    Parameters:

    isValid

    () Boolean

    Inherited from BaseUAObject: packages\node-opcua-factory\src\factories_baseobject.js:83

    verify that all object attributes values are valid according to schema

    Returns:

    Boolean:

    toString

    () String

    Inherited from BaseUAObject: packages\node-opcua-factory\src\factories_baseobject.js:61

    Returns:

    String:

    Properties

    historyReadDetails

    ExtensionObject

    Defined in packages\node-opcua-service-history\_generated_\_auto_generated_HistoryReadRequest.js:59

    Maximum age of the value to be read in milliseconds

    nodesToRead

    HistoryReadValueId[]

    Defined in packages\node-opcua-service-history\_generated_\_auto_generated_HistoryReadRequest.js:81

    List of Nodes and their Attributes to read. For each entry in this list, a StatusCode is returned, and if it indicates success, the Attribute Value is also returned.

    timestampsToReturn

    TimestampsToReturn

    Defined in packages\node-opcua-service-history\_generated_\_auto_generated_HistoryReadRequest.js:66

    An enumeration that specifies the Timestamps to be returned for each requested Variable Value Attribute.

    Default: 3