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ErrorLib — Industrial Fault Code Library

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SP0133

Data Transfer Error

Fanuc · Alpha i Series AC Servo Motor and Spindle

What does SP0133 mean?

Serial data transmission/reception is not performed normally between the sensor and the spindle amplifier. This indicates a problem with the data integrity or timing.

Common Causes

  • Interruption in data flow between communication nodes.
  • Network congestion or excessive traffic on the communication bus.
  • Timeout errors during data exchange with a peripheral device.
  • Failure of a device to acknowledge received data packets.
  • Incorrect address or configuration for a communication device.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Verify the feedback cable connections for secure contact and integrity.

  2. 2

    Check for external noise sources that might be interfering with data transmission.

  3. 3

    Examine the sensor and spindle amplifier for any other related alarms or diagnostic indicators.

Browse all codes in this manual (29)
Verified technical data. Last updated: April 2026

Related Faults

08Regeneration Excess Alarm1Over-current at Power Running (ECM)2Over-current at Regeneration (ECM)
Source: Fanuc Alpha i Series AC Servo Motor and Spindle
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