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14:24, EET
November 10, 2016
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Hello!
Trying to understand how and if the API can be used for the following task:
A built in OPC-server in a Siemens PLC returns an ExtensionObject when reading a certain node. This node has in turn descendants, (but also a value?). Is it possible to read this value as a byte array rather than browsing down to its components and reading these individually.
Looking at the same node from another OPC client we see a byte array!
//BR Martin
13:26, EET
April 17, 2013
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Hello,
An ExtensionObject is a container for any Structured DataType. So, the server is sending a structure and optimally your client application should decode the value as a structure.
If you really want to just obtain the byte array representation of the structure, then you can call ExtensionObject.getObject() method.
If you have the structure type definition available as a UaNodeSet XML file, then you can use the code generator of the Java SDK. This makes using the structure type in your Java code easier.
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