Custom variable types that you or the application logic create are available only in the project in which you create them.
TIP:
Changes to a variable type automatically apply to all instances of the variable. If you delete the variable type, you also delete all the subtypes of the variable type, along with the corresponding instances of the variable.
Variable
Variables contain specific data types (for example, a numeric Int32 value or a String value).
By default, every variable contains these attributes:
Attribute
Description
BrowseName
Name of the variable in the project.
DataType
Data type that the variable can contain.
Description
Description of the variable.
DisplayName
Translatable variable name that can appear on the interface at runtime.
NodeId
Automatically assigned unique identifier.
Value
Value of the data.
For example, you can create a label with a string value of
OK
and then create a dynamic link between the variable and the
Text
property of a
Button
object.
Variable with a string value
Dynamic link between the Text property of a button and the string variable
Analog variable
Analog variables are structured variables that represent physical characteristics and ranges.
By default, every analog variable contains these attributes:
