SRVO-093

Line Tracking Pulsecoder Abnormally High Position Data

Fanuc · R-30iB Mate + Mate Plus Robot

What does SRVO-093 mean?

The current position data received from the Pulsecoder for line tracking is abnormally higher than the previous position data. This suggests an inconsistency or error in the position feedback, potentially due to a faulty Pulsecoder or signal interference.

Common Causes

  • Line tracking pulsecoder reporting an excessively large position value.
  • Encoder rollover at a speed exceeding its resolution limit.
  • Internal fault within the line tracking pulsecoder causing incorrect position data.
  • External interference causing spurious position pulses.
  • Incorrect scaling or offset of position feedback from the line tracker.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the connection cable at each end (the line tracking board and the Pulsecoder).

  2. 2

    Check whether the shielding of the connection cable is securely connected to the grounding plate.

  3. 3

    Replace the Pulsecoder.

  4. 4

    Replace the line tracking cable.

  5. 5

    Replace the line tracking board.

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Verified technical data. Last updated: March 2026

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Source: Fanuc R-30iB Mate + Mate Plus Robot