WaitForItemValue Method (IEasyDAClientExtension2)

Waits until the OPC-DA item quality becomes "good".

This method subscribes to the specified OPC-DA item, and monitors its data until it has "good" quality, an error occurs, or the alloted time elapses.

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

Overload List

Overload	Description
WaitForItemValue(IEasyDAClient,DAItemArguments)	Waits until the OPC-DA item quality becomes "good". Specify item arguments object, use default wait group parameters.
WaitForItemValue(IEasyDAClient,DAItemArguments,DAGroupParameters)	Waits until the OPC-DA item quality becomes "good". Specify item arguments object and group parameters.
WaitForItemValue(IEasyDAClient,DAItemArguments,DAGroupParameters,Int32)	Waits until the OPC-DA item quality becomes "good". Specify item arguments, and group parameters, and timeout in milliseconds.
WaitForItemValue(IEasyDAClient,DAItemGroupArguments,Int32)	Waits until the OPC-DA item quality becomes "good". Specify item arguments, and timeout in milliseconds.
WaitForItemValue(IEasyDAClient,ServerDescriptor,DAItemDescriptor)	Waits until the OPC-DA item quality becomes "good". Specify server descriptor and item descriptor; uses default wait group parameters.
WaitForItemValue(IEasyDAClient,ServerDescriptor,DAItemDescriptor,DAGroupParameters)	Waits until the OPC-DA item quality becomes "good". Specify server descriptor, item descriptor, and group parameters.
WaitForItemValue(IEasyDAClient,ServerDescriptor,DAItemDescriptor,DAGroupParameters,Int32)	Waits until the OPC-DA item quality becomes "good". Specify server descriptor, item descriptor, group parameters, and timeout in milliseconds.
WaitForItemValue(IEasyDAClient,String,String,DAItemDescriptor)	Waits until the OPC-DA item quality becomes "good". Specify machine name, server class, and item descriptor.
WaitForItemValue(IEasyDAClient,String,String,DAItemDescriptor,DAGroupParameters)	Waits until the OPC-DA item quality becomes "good". Specify machine name, server class, item descriptor and group parameters
WaitForItemValue(IEasyDAClient,String,String,DAItemDescriptor,DAGroupParameters,Int32)	Waits until the OPC-DA item quality becomes "good". Specify machine name, server class, item descriptor, group parameters, and timeout in milliseconds.

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

IEasyDAClientExtension2 Class
IEasyDAClientExtension2 Members

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