C# project nodes

Displays the following base properties of any project node:

BrowseName

The name of the node in the

FactoryTalk Optix Studio

project. Cannot be localized.

DisplayName

The name of the node visible in the user interface. Can be localized in

FactoryTalk Optix Studio

.

NodeId

The unique ID for the node, automatically assigned by

FactoryTalk Optix Studio

.

Displays the properties of any instance of a project object (for example: a graphical object, alarm, driver).

It is an

IUANode

subclass, which displays all of its properties. It also exposes the

ObjectType

property, which is a reference to the object type (

IUAObjectType

class) from which the instance derives.

Displays the properties of any type of a project object (for example: a graphical object, alarm, driver).

It is an

IUANode

subclass, which displays all of its properties. It also exposes the

SuperType

property, which is the C# object that represents the object type from which the same

IUAObjectType

derives.

Displays the properties of any project variable instance (base variable, analog variable, controller tag, node pointer).

It is an

IUANode

subclass, which displays all of its properties. It also exposes the following properties:

ArrayDimensions

The quantity of cells in the array.

DataType

The data type that the variable can contain (for example:

OpcUa.DataTypes.Boolean

,

OpcUa.DataTypes.Int16

).

Value

The value of the variable (

UAValue

property).

VariableType

The C# object that represents the type of the variable from which the instance derives.

Displays the properties of any type of a project variable.

It is an

IUANode

subclass, which displays all of its properties. It also exposes the following properties:

ArrayDimensions

The quantity of cells in the array.

DataType

The data type that the variable can contain (for example:

OpcUa.DataTypes.Boolean

,

OpcUa.DataTypes.Int16

).

SuperType

The C# object that represents the variable type from which the same

IUVariableType

derives.

Displays a value. The value can then be converted to and from different types of C# data.

A corresponding C# class is available for any custom or default objects and variables. The class is always a subclass of

IUAObject

or

IUAVariable

, to which any properties specified in the type are added.

For example, if a

Motor

object type is created in

FactoryTalk Optix Studio

with the

Speed

and

Acceleration

properties, the

Motor

C# class is automatically created with the

Speed

,

SpeedVariable

,

Acceleration

, and

AccelerationVariable

properties.

C# default class types are defined in

FTOptix

modules. When you save the project,

FactoryTalk Optix Studio

creates C# classes that correspond to custom types.

For each OPC UA Object Type, the following C# property variants are available:

A property which name equals to the

BrowseName

of the property

Represents the value of the property (for example:

"Current speed is: "

). The value of the property is that of the same C# property (for example, string data type for

Text

).

For example, the

Text

class for the

Text

property of a

Label

object.

A property of the

IUAVariable

type which name consists of the

BrowseName

of the property and the

Variable

suffix

Represents the OPC UA node of the property. It is useful for setting dynamic links and other instructions that require access to the

IUAVariable

class of the property.

For example, the

TextVariable

property corresponds to the

Text

property of a

Label

object.