Siemens alarm 26040: Axis %1 encoder parameterization MD %2[%3] has been adjusted.
SINUMERIK axis/spindle alarm · Siemens 840D/810D powerline
What it means
Information alarm: the NCK corrected an implausible encoder-related machine data value automatically during commissioning/validation. The affected MD and index are named; the correction keeps the system consistent but should be reviewed by the commissioner.
Likely causes
- entered encoder data inconsistent with detected encoder
- values copied from another axis/encoder type
- encoder exchanged for a type with different resolution
Triage note: Check the named machine data and confirm or deliberately re-parameterize.
Need the part urgently?
Send us alarm 26040 with your machine details — typical RFQ turnaround is 24–48h.