SP0987
SIC-LSI Faulty (CNC Side, 15i)
Fanuc · AC Spindle Motor αi-βi Series Parameters
What does SP0987 mean?
The SIC-LSI (Serial Interface Converter-LSI) on the CNC side for Series 15i is faulty. This indicates a hardware error on the CNC's serial communication interface.
Repair Steps
Verified technical data. Last updated: March 2026
Source: Fanuc AC Spindle Motor αi-βi Series Parameters