Siemens alarm 61287: No master spindle active
SINUMERIK function alarm · Siemens 840D/810D powerline
What it means
A cycle that requires spindle commands (drilling, tapping, turning or measuring functions) ran without any spindle configured as master spindle. The master spindle designation is made in the machine data, e.g. MD20090 and the axis usage assignment in MD52206. Configure the master/counter spindle assignment and restart.
Likely causes
- Master spindle machine data not set after commissioning
- Axis usage table ($MC_AXIS_USAGE) lacks main/counter spindle entries
- Spindle assignment changed by PLC or program without redefinition
Triage note: Multi-spindle machines: every channel executing spindle cycles needs its own master spindle.
Need the part urgently?
Send us alarm 61287 with your machine details — typical RFQ turnaround is 24–48h.