@staticmethod
def toggle_all_outputs(ramp):
    """Generate a command that toggles all output-ports.

        Toggle mode: (on->off, off->on).

        :param    int    ramp:    Ramp value
        :return:    The PCK command (without address header) as text
        :rtype:    str
        """
    return 'AU{:03d}'.format(ramp)
