# Main spindle axis number (P-CHAN-00051)

P-CHAN-00051 | Logical axis number of the main spindle in the NC channel
Description | This parameter assigns the definition of the main spindle. The logical axis number of one of the spindles which is configured in the channel parameters list is entered here. After the controller starts up, this spindle becomes the main spindle. However, any other spindle in the system can be declared to be the main spindle using a command in the part program (#MAIN SPINDLE [PROG]).
Parameter | main_spindle_ax_nr
Data type | UNS16
Data range | 1 ... MAX(UNS16)
Dimension | ----
Default value | 0
Remarks | Parameterisation example: The spindle with logical axis number 6 is the main spindle. main_spindle_ax_nr 6