DAAutoSubscribingParameters Class Members

OPC Studio User's Guide and Reference

DAAutoSubscribingParameters Class Members

Fields Properties Methods Collapse All

OpcLabs.EasyOpcClassicCore Assembly > OpcLabs.EasyOpc.DataAccess.Optimization Namespace : DAAutoSubscribingParameters Class

The following tables list the members exposed by DAAutoSubscribingParameters.

Public Constructors

	Name	Description
	DAAutoSubscribingParameters Constructor	Overloaded. Initializes a new instance of the class.

Public Fields

	Name	Description
	DefaultAbandonIntervalMinimum	Default value of the AbandonIntervalMinimum property.
	DefaultAbandonRateMultiplier	Default value of the AbandonRateMultiplier property.
	DefaultAutoAdjustmentPeriod	Default value of the AutoAdjustmentPeriod property.
	DefaultFastestAutomaticUpdateRate	Default value of the FastestAutomaticUpdateRate property.
	DefaultMaximumEffectiveValueAge	Default value of the MaximumEffectiveValueAge property.
	DefaultMinimumEffectiveValueAge	Default value of the MinimumEffectiveValueAge property.
	DefaultReadIntervalAggregateMinimumValues	Default value of the ReadIntervalAggregateMinimumValues property.
	DefaultReadIntervalAggregateWindowSize	Default value of the ReadIntervalAggregateWindowSize property.
	DefaultRequestedUpdateRateFactor	Default value of the RequestedUpdateRateFactor property.
	DefaultSlowestAutomaticUpdateRate	Default value of the SlowestAutomaticUpdateRate property.
	DefaultUpdateRateNegativeHysteresis	Default value of the UpdateRateNegativeHysteresis property.
	DefaultUpdateRatePositiveHysteresis	Default value of the UpdateRatePositiveHysteresis property.
	DefaultValueAgeAggregateMinimumValues	Default value of the ValueAgeAggregateMinimumValues property.
	DefaultValueAgeAggregateWindowSize	Default value of the ValueAgeAggregateWindowSize property.

Public Properties

	Name	Description
	AbandonIntervalMinimum	Abandon interval minimum. Number of milliseconds. The OPC item is considered "abandoned" if no read requests to it have been made for abandon interval. In such case it is unsubscribed. The abandon interval is computed using the aggregated read rate and AbandonRateMultiplier, but it is never shorter than value of this property.
	AbandonRateMultiplier	Abandon rate multiplier. Must be greater than or equal to 1.0. The OPC item is considered "abandoned" if no read requests to it have been made for abandon interval. In such case it is unsubscribed. The abandon interval is computed by multiplying the aggregated read rate and the value of this property, but it is never shorter than AbandonIntervalMinimum.
	AutoAdjustmentPeriod	Auto adjustment period. Number of milliseconds. Specifies how often the engine automatically adjusts the parameters (such as update rate) of OPC items to match the observed usage pattern (e.g. the frequency of reading the item).
	Default	Default OPC-DA auto-subscribing parameters.
	FastestAutomaticUpdateRate	Fastest automatic update rate. Number of milliseconds. When the system automatically modifies the update rate of an OPC item, it never chooses a rate that is faster (has lower value) than the value of this property.
	MaximumEffectiveValueAge	The maximum effective value age in the Read request for it to be considered in auto-subscribing.
	MinimumEffectiveValueAge	The minimum effective value age in the Read request for it to be considered in auto-subscribing.
	ReadIntervalAggregateMinimumValues	The minimum count of data values in the read interval aggregate.
	ReadIntervalAggregateWindowSize	The size of the window use by the read interval aggregate.
	RequestedUpdateRateFactor	The factor used to calculate the requested update rate from the value age aggregate.
	SlowestAutomaticUpdateRate	Slowest automatic update rate. Number of milliseconds. When the system automatically modifies the update rate of an OPC item, it never chooses a rate that is slower (has higher value) than the value of this property.
	StandardName	A symbolic name of the current parameter combination if it has a standard name. Empty otherwise. (Inherited from OpcLabs.BaseLib.Parameters)
	UpdateRateNegativeHysteresis	Hysteresis for negative update rate changes. In percent, between 0.0 and 100.0. Requests to make the update rate of OPC item faster (i.e. lower value) will be ignored if the percentual change in update rate value is lower than the value of this property.
	UpdateRatePositiveHysteresis	Hysteresis for positive update rate changes. In percent, between 0.0 and 100.0. Requests to make the update rate of OPC item slower (i.e. higher value) will be ignored if the percentual change in update rate value is lower than the value of this property.
	ValueAgeAggregateMinimumValues	The minimum count of data values in the value age aggregate.
	ValueAgeAggregateWindowSize	The size of the window use by the value age aggregate.

Public Methods

	Name	Description
	Clone	Overridden.
	Equals	Overloaded. Overridden. Determines whether the specified System.Object is equal to the current object.
	GetHashCode	Overridden. Serves as a hash function for a particular type.
	GetObjectData	Overridden.
	GetSchema	(Inherited from OpcLabs.BaseLib.Info)
	GetType	Gets the System.Type of the current instance. (Inherited from object)
	ReadXml	(Inherited from OpcLabs.BaseLib.Info)
	ToString	Overridden.
	WriteXml	(Inherited from OpcLabs.BaseLib.Info)

Protected Methods

	Name	Description
	CopyFrom	Infrastructure. Copies data from the specified parameter object into the current parameter object. (Inherited from OpcLabs.BaseLib.Parameters)
	Finalize	Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from object)
	GetDefaultStandardName	Indicates the standard name for the default combination of parameters. (Inherited from OpcLabs.BaseLib.Parameters)
	GetStandardNameValues	Returns a collection of standard values for the OpcLabs.BaseLib.Parameters.StandardName property. (Inherited from OpcLabs.BaseLib.Parameters)
	MakeString	Infrastructure. (Inherited from OpcLabs.BaseLib.Parameters)
	MemberwiseClone	Creates a shallow copy of the current System.Object. (Inherited from object)
	ReadXmlElement	Overridden. Infrastructure.
	WriteXmlElement	Overridden. Infrastructure.

Extension Methods

	Name	Description
	SetState<TNode>	Sets the arbitrary object associated with the node.

Public Operators

Equality	Determines whether the two objects are equal.
Inequality	Determines whether the two objects are not equal.

See Also

Reference

DAAutoSubscribingParameters Class
OpcLabs.EasyOpc.DataAccess.Optimization Namespace

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