[SOLVED] Source code example to write output values.

[falko.wiese]

Hi guys,
there exists an example to write output values of OPC UA Server methods, or could I get any information about how to deal with UaVariantArray instances? Because of, that's the type of the resulting array in the method callback.

Thanks for your help,
Falko.

[Support Team]

Hi Falko,

We used the UaModeler to create a type with a method, that has an array of BaseDataType as input and output. In the following source code we added a sample implementation for the method.

Code: Select all

UaStatus TestType::Method(const ServiceContext& serviceContext,
                     /*IN*/ const UaVariantArray&input,
                     /*OUT*/ UaVariantArray& output)
{
    UaStatus ret;
    // create the UaVariantArray
    output.create(input.length());
    for (OpcUa_UInt32 u=0; u<input.length(); u++)
    {
        // access to array
        UaVariant vTemp = input[u];
        // set values of the array
        vTemp.copyTo(&output[u]);
    }
    return ret;
}

Best Regards, Unified Automation Support Team

[falko.wiese]

Thanks guys, it works perfectly!

Cheers,
Falko.