OPC Studio User's Guide and Reference
Read() Method



OpcLabs.EasyOpcClassic Assembly > OpcLabs.EasyOpc.DataAccess.LiveMapping Namespace > DAClientMapper Class > Read Method : Read() Method
Executes the "Read" operation on all mappings in this mapper.
Syntax
'Declaration
 

Public Overloads Sub Read() 
'Usage
 

Dim instance As DAClientMapper
 
instance.Read()
public void Read()
public:
void Read();
Exceptions
ExceptionDescription
OpcLabs.BaseLib.Licensing.LicensingExceptionThe component is not licensed for the operation requested.
Remarks
The "Read" operation reads a value of an OPC item and stores it into the mapping source. Only mappings of type DAClientItemMapping that include DAItemMappingOperations.Read in their DAClientItemMapping.Operations are affected; other mappings are ignored.
Requirements

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

See Also

Reference

DAClientMapper Class
DAClientMapper Members
Overload List

 

 

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