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labviewopcopc-ua

Labview OPC UA server (Error occured while reading the node)

I am trying to implement the following example (http://zone.ni.com/reference/en-XX/help/370622M-01/lvmve/using_opcua_svr/) but there seems to be in error in my code which i can't figure out. The error is "Error occurred while reading the node". Below is my Block diagram. If a write before read the error become error in writing the node.

enter image description here

Solution

  • Probably the write.vi is not wired up properly. The coercion dots should not appear. Try using context help (ctrl+H) and check the wires once again.

    Moreover you can use "highlight execution" option to check where the error message come from.