Reference

OpcClient.SubscribeNodes Method

Type

OpcClient

Namespace

Opc.UaFx.Client

Assembly

Opc.UaFx.Advanced.dll

Package

Opc.UaFx.Advanced v2.59.0

Members

OpcClient Members

Also in

Opc.UaFx.Client

2 overloads

Overload	Description
SubscribeNodes(IEnumerable<OpcSubscribeNode>)	Creates a OpcSubscription using the OpcMonitoredItem setup defined by the commands specified.
SubscribeNodes(params OpcSubscribeNode[])	Creates a OpcSubscription using the OpcMonitoredItem setup defined by the commands specified.

Exceptions (all overloads)

Exception	Condition
InvalidOperationException	The subscription service is currently not supported, especially using the arguments specified.
ObjectDisposedException	The object has been disposed of.
OpcException	The service execution failed upon different circumstances; for more details see exception details. The following issues can lead to that exception: BadNothingToDo, BadTooManyOperations, BadTimestampsToReturnInvalid, BadSubscriptionIdInvalid, BadMonitoringModeInvalid, BadNodeIdInvalid, BadNodeIdUnknown, BadAttributeInvalid, BadIndexRangeInvalid, BadIndexRangeNoData, BadDataEncodingInvalid, BadDataEncodingUnsupported, BadMonitoredItemFilterInvalid, BadMonitoredItemFilterUnsupported, BadFilterNotAllowed, BadTooManySubscriptions and BadTooManyMonitoredItems.

SubscribeNodes(IEnumerable<OpcSubscribeNode>)

Creates a OpcSubscription using the OpcMonitoredItem setup defined by the commands specified.

public OpcSubscription SubscribeNodes(IEnumerable<OpcSubscribeNode> commands)

Public Function SubscribeNodes(
    commands As IEnumerable(Of OpcSubscribeNode)) As OpcSubscription

Parameters

Name	Type	Description
commands	IEnumerable<OpcSubscribeNode>	A sequence of OpcSubscribeNode commands which are used to define the OpcMonitoredItem's used by the OpcSubscription created.

Returns

OpcSubscription

A new instance of the OpcSubscription class with OpcMonitoredItem's setup with the information specified. The kind of monitored item and how it is used by the subscription depends on the number, type and values passed to the different OpcSubscribeNode commands.

Exceptions

Exception	Condition
ArgumentNullException	The commands or one of the items in the sequence is a null reference (Nothing in Visual Basic).
LicenseException	The license is expired.

SubscribeNodes(params OpcSubscribeNode[])

Creates a OpcSubscription using the OpcMonitoredItem setup defined by the commands specified.

public OpcSubscription SubscribeNodes(params OpcSubscribeNode[] commands)

Public Function SubscribeNodes(
    ParamArray commands As OpcSubscribeNode()) As OpcSubscription

Parameters

Name	Type	Description
commands	params OpcSubscribeNode[]	An array of OpcSubscribeNode commands which are used to define the OpcMonitoredItem's used by the OpcSubscription created.

Returns

OpcSubscription

A new instance of the OpcSubscription class with OpcMonitoredItem's setup with the information specified. The kind of monitored item and how it is used by the subscription depends on the number, type and values passed to the different OpcSubscribeNode commands.

Exceptions

Exception	Condition
ArgumentNullException	The commands or one of the items in the array is a null reference (Nothing in Visual Basic).