Chapter 5
Developing The Application
©
National Instruments Corporation
5-3
NI-FBUS Hardware and Software User Manual
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For detailed information of the class libraries, please refer to the Help of
NI-FBUS Software .NET Library.
The Visual Basic .NET example can be found in the
examples/
VBExample
subfolder of the
MS .NET
folder. The
VBExample.vbproj
file is the Visual Basic .NET project of the example.
The Visual C# example can be found in the
examples/CsharpExample
subfolder of the
MS .NET
folder. The
CsharpExample.csproj
file is the
Visual C# project of the example.
Another .NET example can be found in
examples/AdvDemo
subfolder of
the
MS .NET
folder. The
AdvDemo.csproj
file is the Visual C# project of
the example.
OPC Server
NI-FBUS software includes a separate OPC Data Access Server, which is
compliant with the
OPC Data Access 2.0 and 3.0 Specification
.
Any OPC client program can easily access NI-FBUS OPC Server through
standard OPC DA interfaces. The FF data types are mapped to OPC data
types as below.
OPC Data Type Mapping Rule
The
SIMPLE
type and
ARRAY
type variables are regarded as leaf nodes
in the OPC address space. The
RECORD
type variables are regarded as
branch nodes, you need to access each of its member variable through this
branch node.