Fanuc alarm PS0050: CHF/CNR NOT ALLOWED IN THRD BLK
PS alarm (program/operation) · Fanuc 0i-D
What it means
Chamfering (C) or corner R was specified in a threading block. These corner-treatment words are not permitted together with thread cutting commands.
Likely causes
- Chamfer/corner-R word left in a G32/G92 threading block
- Converted lathe program retaining chamfer words
Need the part urgently?
Send us alarm PS0050 with your machine details — typical RFQ turnaround is 24–48h.