Siemens alarm 410150: Area in M group decoder list is too large
SINUMERIK PLC system alarm · Siemens 840D/810D powerline
What it means
More M-function groups were declared to the PLC than fit into the reserved decoder-list area, so the static M-group decoding table overflows. The number of M groups handed to the PLC has to be reduced. This occurs during commissioning of extended PLC-side M functions, not during normal production.
Likely causes
- Excessive number of PLC M groups defined in the interface configuration
- M-group table enlarged without checking area limits
Triage note: Remedy: reduce the number of groups; program continuation internal.
Need the part urgently?
Send us alarm 410150 with your machine details — typical RFQ turnaround is 24–48h.