please i have problem ! i have project and i don't know what material i use .i want control stepper motor with s7 1200 with pulse interface what i use ? i use sinamics or i can use simple servo drive !i need explication plz because i see in the document in below in this application servo drive but no explication about this servo dive and the motor he use .plz i want who help me to know if i use s7 1200 +sinamics s + servo motor 1fk7 or i use 1200+ simple servo drive (i dont know one)