Constant Method (UADataVariableExtension)

Modifies the data variable to provide the specified constant attribute data (value, status code, timestamp), non-writable.

For reads and subscriptions, the data variable will provide always the same data, specified in this method call. The data variable will not be writable.

Overload List

Overload	Description
Constant(UADataVariable,Type,UAAttributeData)	Makes a constant data variable with given value type, and attribute data object (value, status code, timestamp).
Constant(UADataVariable,TypeCode,UAAttributeData)	Makes a constant data variable with given value type code, and attribute data object (value, status code, timestamp).
Constant(UADataVariable,UANodeId,IReadOnlyList<Int32>,UAAttributeData)	Makes a constant data variable with given data type Id, array dimension list, and attribute data object (value, status code, timestamp).
Constant(UADataVariable,UANodeId,UAAttributeData)	Makes a constant data variable with given data type, attribute data object (value, status code, timestamp), and an empty array dimension list.
Constant<TValue>(UADataVariable,UAAttributeData<TValue>)	Makes a constant data variable using generic-typed attribute data object (typed value, status code, timestamp).

Requirements

Target Platforms: .NET Framework: Windows 10 (selected versions), Windows 11 (selected versions), Windows Server 2016, Windows Server 2022; .NET: Linux, macOS, Microsoft Windows

Reference

UADataVariableExtension Class
UADataVariableExtension Members

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