# Logical axis number (P-AXIS-00016)

P-AXIS-00016 | Logical axis number
Description | The logical axis number is a system-wide unique identifier for each axis. The entire management of axis data in the NC kernel takes place using the logical axis number.
Parameter | kopf.achs_nr
Data type | UNS16
Data range | 0 < achs_nr < MAX(UNS16)
Axis types | T, R, S
Dimension | T: ---- | R,S: ----
Default value | 1
drive types. | ----
Remarks | It is not allowed to use the same logical axis number more than once. The logical axis number "0" is not allowed. The assignment of an axis designation in the NC program to a logical axis (axis number) takes place in the channel parameters [CHAN].

This entry is not adopted when the axis parameter list is updated. Updates only become effective when the controller is rebooted.