Attention

IronPLC can only run very simple programs. The steps described are accurate but many language features are not yet supported.

P4014¶

This error occurs when a symbol (variable, constant, or other identifier) is declared more than once in the same scope.

Example¶

The following code will generate error P4014:

FUNCTION_BLOCK Example
VAR
    DuplicateName : INT;
    DuplicateName : BOOL;  (* Error: Symbol name duplicated *)
END_VAR
END_FUNCTION_BLOCK

The symbol DuplicateName is declared twice in the same variable section, which is not allowed.

To fix this error, ensure all symbol names are unique within their scope:

FUNCTION_BLOCK Example
VAR
    FirstVariable : INT;
    SecondVariable : BOOL;  (* Correct: Different name *)
END_VAR
END_FUNCTION_BLOCK