# Calculation mode for encoder's actual position (P-AXIS-00448)

P-AXIS-00448 | Calculation mode for encoder actual position for additive encoder (PROFIDRIVE)
Description | If parameter P-AXIS-00447 is set to 1, this parameter (P-AXIS-00448) must specify the calculation mode for the encoder actual position. There are two modes for this.
Parameter | antr.profibus.encoder[i].read_abs_pos_mode
Data type | STRING
Data range | DRIVE_POS: The absolute position transferred by the encoder is adopted as the actual position after any necessary format adjustment (default). COMBINED: Bits 31 … shift_xist1 are taken from the absolute position returned by the encoder, while bits 0 … shift_xist1 - 1 are taken from GX_XIST1.

See also the figure below.

Axis types | T, R, S
Dimension | T: ---- | R,S: ----
Default value | DRIVE_POS
Drive types | Profidrive
Remarks | The COMBINED calculation mode may only be used if the drive's motor encoder returns an actual position that is absolute within one motor revolution. If applicable, consult the manufacturer's documentation.

Calculation mode for encoder actual position for additive encoder