Reading/writing custom structure to node

[OskarN]

Hi!

I have a problem regarding reading/writing structures to/from the OPC server.

The setup:
A B&R PLC running the OPC server.
The PLC defines a structure with two members, an integer and a boolean:


A variable of this structure is enabled in the server. I can read/write to each of the members using UaExpert.





Now! For my client (.NET/C# application), I have defined a class:

Code: Select all

public class TestTyp
{   
  public int IntegerValue { get; set; }
  public bool BoolValue { get; set; }
}

First, I want my client to read this variable and cast the result to an object of this class (type).
Secondly, I want my client to be able to write an object of this class to the variable.
Such as the following pseudo code:

Code: Select all

TestTyp readValues = ReadVariable(node) as TestTyp;
TestTyp writeValues = new TestTyp(1338, true);
WriteVariable(writeValues);

How do I implement the methods ReadVariable and WriteVariable for generic types?

[Support Team]

Since the structured DataType is known at compile time we recommend to use UAModeler to generated code for this DataType.
Please see the .NET Client HowTo in UaModeler documentation: http://documentation.unified-automation.com/uamodeler/1.6.4/html/howprojnetclientapplication_sec.html

[zyhos]

thanks