OpcLimitAlarmNode Members

Initializes a new instance of the OpcLimitAlarmNode class accessible by the name specified as a child node of the parent node given.

C#

public OpcLimitAlarmNode(IOpcNode parent, OpcName name, OpcLimitAlarmStates supportedLimits)

Parameters

parent IOpcNode

The IOpcNode used as the parent node or a null reference (Nothing in Visual Basic) in the case there is no parent node available.

name OpcName

The OpcName through that the new limit alarm node can be accessed.

supportedLimits OpcLimitAlarmStates

One or more members defined by the OpcLimitAlarmStates enumeration identifying the limits defined by the alarm.

Initializes a new instance of the OpcLimitAlarmNode class accessible by the name and id specified as a child node of the parent node given.

C#

public OpcLimitAlarmNode(IOpcNode parent, OpcName name, OpcNodeId id, OpcLimitAlarmStates supportedLimits)

Parameters

parent IOpcNode

The IOpcNode used as the parent node or a null reference (Nothing in Visual Basic) in the case there is no parent node available.

name OpcName

The OpcName through that the new limit alarm node can be accessed.

id OpcNodeId

The OpcNodeId through that the new limit alarm node can be identified and accessed.

supportedLimits OpcLimitAlarmStates

One or more members defined by the OpcLimitAlarmStates enumeration identifying the limits defined by the alarm.

Initializes a new instance of the OpcLimitAlarmNode class accessible by the name and supportedLimits specified.

C#

public OpcLimitAlarmNode(OpcName name, OpcLimitAlarmStates supportedLimits)

Parameters

name OpcName

The OpcName through that the new limit alarm node can be accessed.

supportedLimits OpcLimitAlarmStates

One or more members defined by the OpcLimitAlarmStates enumeration identifying the limits defined by the alarm.

Initializes a new instance of the OpcLimitAlarmNode class accessible by the name and id with the supportedLimits specified.

C#

public OpcLimitAlarmNode(OpcName name, OpcNodeId id, OpcLimitAlarmStates supportedLimits)

Parameters

name OpcName

The OpcName through that the new limit alarm node can be accessed.

id OpcNodeId

The OpcNodeId through that the new limit alarm node can be identified and accessed.

supportedLimits OpcLimitAlarmStates

One or more members defined by the OpcLimitAlarmStates enumeration identifying the limits defined by the alarm.

Gets the default identifier which identifies the node that defines the underlying node type from that this OpcInstanceNode has been created.

C#

protected override OpcNodeId DefaultTypeDefinitionId { get; }

Property Value

OpcNodeId

The OpcNodeId of the type node from that this OpcInstanceNode has been created from. These type node defines the typical structure of an instance node of its type definition. If there exists no specific type definition node a null reference (Nothing in Visual Basic).

Gets or sets a value which indicates the high high limit of a value to test for the alarm condition.

C#

public double HighHighLimit { get; set; }

Property Value

Double

The optional high high limit to test.

Remarks

The property is optional but at least one of the limit properties is required to apply limits to the alarm condition. For cases where an underlying system cannot provide the actual value of a limit, the limit property will still be provided, but will have its access level set to not readable. It is assumed that the limits are described using the same engineering unit that is assigned to the variable that is the source of the alarm. For rate of change limit alarms, it is assumed this rate is units per second unless otherwise specified.

Gets the OpcPropertyNode´1 of the HighHighLimit property.

C#

public OpcPropertyNode<double> HighHighLimitNode { get; }

Property Value

OpcPropertyNode<Double>

An instance of the OpcPropertyNode´1 class.

Gets or sets a value which indicates the high limit of a value to test for the alarm condition.

C#

public double HighLimit { get; set; }

Property Value

Double

The optional high limit to test.

Remarks

The property is optional but at least one of the limit properties is required to apply limits to the alarm condition. For cases where an underlying system cannot provide the actual value of a limit, the limit property will still be provided, but will have its access level set to not readable. It is assumed that the limits are described using the same engineering unit that is assigned to the variable that is the source of the alarm. For rate of change limit alarms, it is assumed this rate is units per second unless otherwise specified.

Gets the OpcPropertyNode´1 of the HighLimit property.

C#

public OpcPropertyNode<double> HighLimitNode { get; }

Property Value

OpcPropertyNode<Double>

An instance of the OpcPropertyNode´1 class.

Gets or sets a value which indicates the low limit of a value to test for the alarm condition.

C#

public double LowLimit { get; set; }

Property Value

Double

The optional low limit to test.

Remarks

The property is optional but at least one of the limit properties is required to apply limits to the alarm condition. For cases where an underlying system cannot provide the actual value of a limit, the limit property will still be provided, but will have its access level set to not readable. It is assumed that the limits are described using the same engineering unit that is assigned to the variable that is the source of the alarm. For rate of change limit alarms, it is assumed this rate is units per second unless otherwise specified.

Gets the OpcPropertyNode´1 of the LowLimit property.

C#

public OpcPropertyNode<double> LowLimitNode { get; }

Property Value

OpcPropertyNode<Double>

An instance of the OpcPropertyNode´1 class.

Gets or sets a value which indicates the low low limit of a value to test for the alarm condition.

C#

public double LowLowLimit { get; set; }

Property Value

Double

The optional low low limit to test.

Remarks

The property is optional but at least one of the limit properties is required to apply limits to the alarm condition. For cases where an underlying system cannot provide the actual value of a limit, the limit property will still be provided, but will have its access level set to not readable. It is assumed that the limits are described using the same engineering unit that is assigned to the variable that is the source of the alarm. For rate of change limit alarms, it is assumed this rate is units per second unless otherwise specified.

Gets the OpcPropertyNode´1 of the LowLowLimit property.

C#

public OpcPropertyNode<double> LowLowLimitNode { get; }

Property Value

OpcPropertyNode<Double>

An instance of the OpcPropertyNode´1 class.

Gets a combination of the values defined by the OpcLimitAlarmStates enumeration which defines the different limit states the OpcLimitAlarmNode supports.

C#

public OpcLimitAlarmStates SupportedLimits { get; }

Property Value

OpcLimitAlarmStates

A combination of the members defined by the OpcLimitAlarmStates enumeration.

Creates a new instance of the OpcLimitAlarmNode using the same Id and Name as this node.

C#

protected override OpcConditionNode CreateBranchCore()

Returns

OpcConditionNode

A new instance of the OpcLimitAlarmNode identifiable and accessible througth the same Id and Name as this node.

Initializes the default values used by the OpcLimitAlarmNode.

C#

protected override void InitializeDefaults()

Remarks

This method is used to ensure the availability of appropriate node specific default values. For more information like when this method is to be overwritten see InitializeDefaults.