The absolute encoder provides a unique digital code for each angle position of the shaft, storing the value of the current position and, therefore, preventing the loss of information in case of restarting the system or of a power-loss.

The absolute encoder could be of two types:

• Singleturn
• Multiturn

Singleturn absolute encoder

The singleturn absolute encoder allows a precise encoding of the angular position of the shaft, to which the encoder is coupled to, even if the power goes out. Therefore, each single degree position is converted into a specific code (Gray or binary) proportionally to the number of bits.

Multiturn absolute encoder

The multiturn absolute encoder allows a higher number of applications, representing a very interesting extension of the encoders’ action field. Besides the angular tracking of the singleturn system, the multiturn stores also the counting of number of revolutions (360° turns) made. 

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