Siemens alarm 44: Part program memory not available
SINUMERIK 810/820 legacy alarm · Siemens 810/820
What it means
At power-on the NCK found no valid part-program memory partition - normally only during initial commissioning or after memory loss. Programs cannot be stored or edited until the user memory is initialized and machine data reloaded.
Likely causes
- Uninitialized NCK memory during commissioning
- RAM test failure after backup-battery loss
- Deleted memory configuration
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Send us alarm 44 with your machine details — typical RFQ turnaround is 24–48h.