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SP0978
Serial Spindle Amplifier Communication Timeout (15i)
Fanuc · AC Spindle Motor Alpha i-Beta i Series Parameters
Was bedeutet SP0978 ?
A time-out was detected in communication with a serial spindle amplifier for Series 15i. This indicates a delay or failure in receiving a response from the amplifier within the expected timeframe.
Häufige Ursachen
- Loss of serial communication with the spindle amplifier.
- High network traffic interfering with timely data packets.
- Excessive processing load on the CNC preventing timely responses.
- Incorrect serial communication parameters set in P1-54.
- Physical damage to the serial communication cable or connectors.
Reparaturschritte & Checkliste
Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.
- 1
Verify the presence of data activity on the serial communication bus using an oscilloscope.
- 2
Set parameter P1-54 to the correct baud rate and protocol settings for the amplifier.
- 3
Power cycle the spindle amplifier and the CNC.
- 4
Inspect the serial cable for physical damage and ensure secure connections at both ends.
- 5
Measure the voltage at the serial communication terminals (e.g., T+, T-, R+, R-) on the CNC side.
Verifizierte technische Daten. Zuletzt aktualisiert: March 2026
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Quelle: Fanuc AC Spindle Motor Alpha i-Beta i Series Parameters