# ID 21531

Coordinate system transition during active PTP programming not allowed.
Description | A transition to the machine coordinate system with #MCS ON is not allowed when PTP motion control ((#PTP ON) is active.
Response | Class | 2 | Abort NC program processing.
Solution | Class | 3 | Check and modify NC program. Remove the transition to the machine coordinate system (#MCS ON) or shift it behind #PTP OFF .
Error type | 1, Error message from NC program.