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Information about eTO_JUNK() instruction

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  • Aprile 30, 2025 alle 8:19 am #81779
    George
    Partecipante

    I did know anything about eTO_JUNK()  function…

    Aprile 30, 2025 alle 8:23 am #81781
    Sergio Bertana
    Amministratore del forum

    The IEC 61131 norm requires that all functions have a return value and that the return value must transferred to a variable of the same type.

    This forces to define variables only to store the return values ​​from the functions even if these values ​​are not useful in the development of the program.

    The eTO_JUNK instruction (Present in the library package version from PCK055A030) allows to discard the return value of the functions without generating warnings or compilation errors.

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