WriteItemValue Method (IEasyDAClientExtension)

Writes a value into a named item in an OPC server. Only the item value is written (quality and timestamp are not written).

The WriteItemValue only writes the item value into the OPC-DA server; how the quality and timestamp are affected depends on the server. Some servers support writing the quality and timestamp as well; use the WriteItem method for that.

The server(s) can be local or can be remotely accessed via DCOM.

Optionally, a specific data type can be requested, or an access path can be specified (OPC DA 1.0 only).

Overload List

Overload	Description
WriteItemValue(IEasyDAClient,DAItemValueArguments)	Writes a value into a named item using an object that holds all necessary arguments.
WriteItemValue(IEasyDAClient,ServerDescriptor,DAItemDescriptor,Object)	Writes a value into a named item using descriptor objects for the OPC server and OPC-DA item.
WriteItemValue(IEasyDAClient,String,String,String,Object,VarType)	Writes a value into a named item using individual parameters specifying its location, and a specific data type.
WriteItemValue(IEasyDAClient,String,String,String,Object)	Writes a value into a named item using individual parameters specifying its location, and using server's canonical data type.

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

IEasyDAClientExtension Class
IEasyDAClientExtension Members

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