Sinumerik Alarm 4066 Buffered memory of FFS restored from backup medium (potential loss of data!)
For PC-NC: A possible data integrity error was detected in the FFS memory during power-up. The FFS memory was initialized with the last backup copy. Changes in the FFS memory, which have been made since the last backup copy update, have been lost.
!! Only for PC-NC: Backup copies of the buffered memory are updated (on the hard disk) every time the control is shut down normally.
– Alarm display.
– Interface signals are set.
– NC not ready.
– NC Start disable in this channel.
Start the control again.
Switch control OFF – ON.
- Siemens Diagnostics Guide by Siemens