More than a decade ago, 302 machines were modified in 2006 to be called 502 machines, and along with 503 and 711 were classified
as basic. By 2008, it was called the Economy 402, and the control screen was plug-in, without the use of a very human sliding
screen. Configuration and name were as puzzling as the CMS series, and the subtleties of the people who could guess were minimal.
The 502 was restored in 2010, and was upgraded to the HP Series in March 2011, just like Stopp's best-seller 530HP. So far, the
full range of products has been re-optimized efficiently.