Sinumerik Alarm 4250 FastPlcCom functionality not available
This alarm indicates that the PLC provides the None FastPlcCom functionality during start-up although this functionality is requested by the NCK.
– Alarm display.
Retrofit the PLC with the FastPlcCom functionality or deactivate the FastPlcCom functionality by means of NCK machine data.
Clear alarm with the RESET key.Restart part program
- Siemens Diagnostics Guide by Siemens