# Mechanical movement distance outside the software limit switches (P-AXIS-00459)

P-AXIS-00459 | Mechanical movement distance outside the software limit switches
Description | This parameter specifies the mechanical axis motion path beyond the software limit switches. It defines the mechanical axis motion path together with the position of the limit switches. This value is used to process an absolute encoder overflow automatically:

If the overall position calculated from the absolute position of the drive and the set position offset P-AXIS-00341 (read_abs_pos_offset) lie outside the mechanical motion range of the axis, it is assumed that an overflow of the absolute encoder occurred. To compensate for this overflow, the calculated position is corrected by the value range of the absolute encoder.

Parameter | antr.add_movement_range
Data type | UNS32
Data range | 0 … MAX(UNS32)
Axis types | T
Dimension | T: 0.1 µm | R: ----
Default value | 0
Drive types | ----
Remarks | Automatic handling of the encoder overflow is only possible for linear axes.