Technical information

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Software 3
OPC data server software
OPC Factory Server
Functions 3
Function
Development of client applications
OFS software has 4 types of interface:
b OLE Automation interface (OPC-DA)
Particularly suitable for end users, this enables the development of OPC client
applications in Visual Basic, in Visual Basic for Excel, and in C++.
b OLE Custom interface (OPC-DA)
Used primarily by suppliers of automated control system or industrial IT products,
this interface enables the development of applications in C++ in order to access the
OFS software OPC server. It is aimed at software development experts in particular,
so that they can integrate the client application into their standard products. It is the
interface with the highest performance, in terms of access time to data stored in the
OPC server. It requires extensive knowledge of C++ programming to set up.
b OPC .NET API wrapper interface
The .NET Microsoft compatibility of the OFS data server gives an OPC .NET client
standard access to OFS server items via an Intranet network, thus providing greater
interoperability with standard .NET environments.
Note: In this case, communication between the OPC .NET client and the OFS server is
conducted through the DCOM layer (or COM layer in a local conguration) via the OPC-DA
protocol.
b OPC XML-DA interface (1)
The OPC XML-DA V1.0 specications are designed to overcome the limitations of
the OPC-DA specication and COM/DCOM by providing:
v An interface for Windows and non-Windows client applications
v Remote access via the Internet through rewalls (beyond the Intranet perimeter)
The OPC XML-DA specication is based on Web Services standards such as SOAP,
XML, WSDL. A SOAP client can access data on the OFS server via Intranet or
Internet using the SOAP protocol in conformity with the OPC XML-DA V1.01
specication of the OPC Foundation.
b The OPC-UA interface
This interface is aimed at users with software that includes an OPC-UA client
interface. This interface is based on the same communication standards as the OPC
XML-DA interface and offers the same advantages as it, which are:
v An interface with Windows and non-Windows applications
v Remote access, via the Internet, through a rewall
(1) Available only with the Large version of OPC Factory Server.
Presentation:
page 4/30
Architectures:
page 4/31
Setup:
page 4/33
References:
page 4/35
Time stamping system:
page 4/36
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