Siemens alarm 1030: System error in the link module
SINUMERIK NCK general alarm · Siemens 840D/810D powerline
What it means
An internal error has occurred in the software of the NCU link module, which coordinates several coupled NCKs in a multi-NCK (linked) configuration. Two debug parameters are output with the alarm for analysis by Siemens. This points to a fault inside the link functionality rather than to machine-side wiring.
Likely causes
- Internal software fault in the NCU link-module kernel
- Defective NCU link hardware
- Incompatible or corrupted link/system software versions
- Communication disturbance between coupled NCUs
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Send us alarm 1030 with your machine details — typical RFQ turnaround is 24–48h.