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SP0987
SIC-LSI Faulty (CNC Side, 15i)
Fanuc · AC Spindle Motor Alpha i-Beta i Series Parameters
Was bedeutet SP0987 ?
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.
Häufige Ursachen
- Faulty Serial Interface Converter-LSI chip on the CNC side.
- Damaged CNC serial communication port.
- Software issue within the CNC's serial communication driver.
- Power supply instability affecting the CNC's SIC-LSI.
- Interference on the CNC's internal bus affecting SIC-LSI data.
Reparaturschritte & Checkliste
Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.
- 1
Measure the 5V supply voltage to the SIC-LSI on the CNC control board.
- 2
Inspect the CNC's serial communication connector for bent pins or contamination.
- 3
Run CNC diagnostics for serial communication interfaces.
- 4
Verify the correct driver is loaded for the serial communication hardware.
- 5
Isolate the CNC from other network devices and re-test communication.
Verifizierte technische Daten. Zuletzt aktualisiert: March 2026
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Quelle: Fanuc AC Spindle Motor Alpha i-Beta i Series Parameters