Fagor alarm 4207: Drive Status Ready (DRSTAF/DRSTAS) is missing
CNC 8060/8065/8070 SERCOS error · Fagor 8060/8065/8070
What it means
While the axis was moving, its Drive Status Ready signal (DRSTAF for axes, DRSTAS for spindles, monitored also across tandem pairs) dropped out. The CNC aborts motion because the drive is no longer confirming operational readiness.
Likely causes
- drive fault or protective trip during the move
- PLC enable chain (DRENA/SPENA) interrupted
- loose Sercos connection making status flicker
- power-supply sag dropping a drive offline
Replacement parts
We supply the following units for this alarm — tested, warranty-backed:
- Request a quote →
PS / XPS / RPS power supply
drive · Common cause
Need the part urgently?
Send us alarm 4207 with your machine details — typical RFQ turnaround is 24–48h.