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Iec021 - Methods can only have one Output parameter at the first position

Severity: Error Error

IEC methods/functions are only allowed to have one parameter with the [Output] attribute. It must be the first parameter. IEC methods/functions that can have parameters are methods that either:

  • have the attribute [User]
  • have the attribute [Execution], are called __Process and are in a class with the attribute [Function]
  • have the attribute [Function] and are in a class with the attribute [FunctionContainer]

Solution

Remove the parameters or their [Output] attributes from the method.