Selecting spline interpolation
Release Note

As of Build V2.11.2010.02 the command #SPLINE ON replaces the command #SET SPLINE ON. For compatibility reasons, this command is still available but it’s recommended not to use it in new NC programs.
#SPLINE ON (modal) |
The B spline curve starts at the target point last programmed. The command may be programmed in the same statement as the second vertex or in the preceding statement.
Alternatively, B spline interpolation can be selected using the G151 command.