# ID 60020

Interpolation of spindle impossible with tracking mode active.
Description | Spindle shall be moved although the axis is in tracking mode (command position = actual position). There are different reasons, why an axis is in tracking mode:

- The user commands axis tracking mode via the High Level Interface by using lr_mc_control.follow_up
  For detailed information on CNC realtime control signals see [HLI// Control commands of a channel]).
- The axis reverts automatically to tracking mode (internal tracking mode). Possible reasons for this include:

- The drive displays, with this status, information that it is not ready for operation (not yet initialized).
- There is no valid process data received from the drive.
- The drive is in error state.
- The axis is parked (Profidrive-drive).

Response | Class | 6 | The axis is stopped and the NC program is aborted.
Solution | Class | 6 |

- Reset the signal lr_mc_control.follow_up.command_w.
- Or remedy the cause for the internal tracking mode.
- Do NC reset.
- Restart program.

Parameter | %1: | Logical axis number [-]
Logical axis number (P-AXIS-00016) of the spindle
Error type | 1, Error message from NC program.