PW0013

USER I/O CROSS CHECK ERROR(PMC)

Fanuc · Alpha i Series Servo Amplifier

What does PW0013 mean?

The PMC detected an error in the user-defined safe I/O cross-check function. This indicates a discrepancy in the monitored user-configured safe I/O signals, potentially affecting user-implemented safety features. A power cycle is required.

Common Causes

  • PMC detects a discrepancy in user-defined safe I/O signal states.
  • Malfunctioning user-programmed device affecting PMC monitored I/O.
  • PMC internal logic fault in cross-checking user I/O.
  • Signal integrity issues on user-defined safe I/O communication lines.
  • Incorrect mapping or configuration of user-defined safe I/O in PMC.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Examine the state of all user-defined safe I/O channels within the PMC.

  2. 2

    Measure voltage at the PMC user I/O terminals.

  3. 3

    Verify parameter P1-19 (PMC User I/O Configuration) for accurate setup.

  4. 4

    Inspect the physical connections of user I/O devices.

  5. 5

    Confirm the logic that drives or reads these user I/O signals.

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Verified technical data. Last updated: March 2026

Related Faults

Source: Fanuc Alpha i Series Servo Amplifier