Fanuc · AC Spindle Motor Alpha i-Beta i Series Parameters
A communication error occurred between serial spindle amplifiers (e.g., between motor numbers 1 and 2, or 3 and 4) for Series 15i. This indicates a problem in the inter-amplifier communication chain.
Click steps to track your progress.
Verify the inter-amplifier communication settings (e.g., baud rate, address) for both units.
Inspect the communication cables connecting the serial spindle amplifiers.
Temporarily disconnect one amplifier at a time to isolate the faulty unit.
Check the master amplifier's communication status register.