Chozungulira cha Star (chozungulira cha nyenyezi/chozungulira cha mbali) cha makina oyika zinthu a Siemens CP20A chimakumana ndi vuto la "nthawi yopuma" pobwerera ku malo ofotokozera, zomwe zimachitika kawirikawiri koma zimafuna kufufuza mosamala. Chozungulira ichi ndi chomwe chimapangitsa kuti mutu wa sticker uzungulire kuti ukwaniritse kusankha ndi kuyika ma nozzles osiyanasiyana okhuta.
Cholakwika cha 'commutation timeout' chimatanthauza kuti panthawi yobwerera ku reference point, makinawo adapereka lamulo loti azungulire Star axis kupita pamalo ake oyamba (nthawi zambiri kuti apeze chizindikiro kapena notch), koma mkati mwa nthawi yomwe yatchulidwa, axis controller sinalandire chizindikiro chomwe chikuyembekezeka pamalo (nthawi zambiri chizindikiro cha Index kuchokera ku encoder kapena chizindikiro cha in place kuchokera ku sensa).






