Multiturn encoders record both angle steps per revolution and multiple revolutions. The drive shaft is connected to an internal reduction gear unit which is used to record the number of revolutions. Alternatively this can also be recorded electronically.
The value measured by multiturn encoders is therefore made up of the angle position and the number of revolutions. The recorded value is also calculated and output via the corresponding interface module. SSI, Profibus, Canbus and BISS interfaces are available.