Siemens alarm 10931: Channel %1 block %2 incorrect stock removal contour
SINUMERIK channel alarm · Siemens 840D/810D powerline
What it means
The contour program supplied to the stock removal cycle is geometrically unusable: elements are not connected end-to-end, run in contradictory directions, or leave the allowed plane. The cycle builds its cutting passes from this chain and aborts when it is broken. Repair the contour subprogram so it forms one continuous, consistent profile.
Likely causes
- Gap or overlap between contour elements
- Direction reversal inside the described contour
- Contour drawn in the wrong plane or with mismatched coordinates
Need the part urgently?
Send us alarm 10931 with your machine details — typical RFQ turnaround is 24–48h.