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Check program size and complexity

Access HMI > Program Manager and verify the NC program size. Programs over 1MB or containing extensive CYCLE calls may trigger extended calculation times.

Use SINUMERIK's program structure view to identify resource-intensive sections

Monitor preprocessing progress

Allow the system to complete the calculation process. Check MD11210 PREPROCESSING_LEVEL setting to ensure optimal preprocessing configuration.

MD11210 = 2 provides best balance between preprocessing speed and memory usage

Optimize program structure

If calculation time is excessive, consider breaking large programs into smaller subroutines or reducing parametric complexity in critical sections.

Check available system memory

Navigate to HMI > Diagnostics > System Data > Memory to verify available RAM. SINUMERIK systems require adequate free memory for preprocessing operations.

Low memory conditions can cause program execution errors

Clear unnecessary program data

Delete unused NC programs from active memory and clear the program buffer using Reset > Clear Program Memory function.

Keep only active programs in NC memory to optimize preprocessing performance

Restart NC kernel if needed

If memory issues persist, perform controlled NC Reset via HMI > Machine > Reset > NC Start to clear memory fragmentation.

Verify network connection status

Check HMI > Commissioning > Network Configuration to verify stable connection to program source. Monitor network transfer rates.

Use local program storage for frequently used programs to avoid network delays

Copy program to local storage

Transfer the NC program to local SINUMERIK storage using Program Manager > Copy to Local to eliminate network dependency.

Ensure sufficient local storage space before copying large programs

Configure network timeout parameters

Adjust network timeout settings in MD configuration if network delays are unavoidable. Check MD settings related to file transfer timeouts.

Verify preprocessing machine data

Check MD11210 PREPROCESSING_LEVEL, MD11200 MAX_PREPROCESSING_BLOCKS, and related preprocessing parameters in HMI > Commissioning > Machine Data.

Default MD11210=2 and MD11200=1000 work well for most applications

Reset preprocessing parameters

If parameters have been modified, reset to factory defaults and test program loading performance. Document any custom settings before reset.

Backup machine data before making changes

Optimize for program type

Adjust preprocessing settings based on typical program characteristics. Complex 5-axis programs may require different settings than simple 2D programs.