QuickOPC User's Guide and Reference
Read() Method



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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()
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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