OPCDA.NET Reference Manual
Connect(Host,String) Method
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OpcDaNetUA.Net4 Assembly > OPCDA.NET Namespace > OpcServer Class > Connect Method : Connect(Host,String) Method

accessInfo
Computer name and optional username/password/domain
SrvName
Server ProgId

Glossary Item Box

Connect to the named remote OPC Server. The OPC server is accessed with the defined credentials. The host computer name and optionally the user/password/domain can be defined. What needs to be defined to be able to launch or access an OPC server on a remote computer depends on the network, security and DCOM configuration.
An instance of the OPC COM server is created. The server is launched if it is not already running in the same user. If different applications access the same OPC server then you need to configure DCOM so that all applications launch the OPC server under the same user. Otherwise multiple instances of the OPC server are created.
The OpcEnum server browser is accessed on the remote machine to find the CLSID of the named OPC server. OpcEnum is accessed with the defined credentials.

The Disconnect method needs to be called to release the OPC server before the client program exits.

Syntax

Visual Basic (Declaration) 
Public Overloads Function Connect( _
   ByVal accessInfo As Host, _
   ByVal SrvName As String _
) As Integer
C# 
public int Connect( 
   Host accessInfo,
   string SrvName
)

Parameters

accessInfo
Computer name and optional username/password/domain
SrvName
Server ProgId

Requirements

Target Platforms: Windows 7/8/10, Windows Server 2003/2008/2012/2016, .NET 4.x

See Also

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