Fanuc alarm OT0508: INTERFERENCE:+
overtravel alarm (OT) · Fanuc 0i-D
What it means
Lathe-specific interference check: a tool moving in the plus direction along axis n fouled another tool post. The twin-toolpost interference function predicts contact between opposed posts using registered tool data. Update tool geometry/post assignments if tools changed; otherwise modify the program to keep posts separated.
Likely causes
- Simultaneous opposing post movement programmed too closely
- Tool registration (geometry/direction) incorrect
- Post assignment parameters wrong after turret rebuild
Need the part urgently?
Send us alarm OT0508 with your machine details — typical RFQ turnaround is 24–48h.