0x4024

Position Moving During WAIT-FOR-RESET

Beckhoff · TwinSAFE Logic FB

What does 0x4024 mean?

The FB CamMonitor entered the WAIT-FOR-RESET state because the Reset input was FALSE, but then the position unexpectedly changed from stopped to moving. This indicates the mechanism moved when it should have been static while awaiting a reset command, posing a risk of unintended motion.

Common Causes

  • Position feedback indicates movement while in a WAIT-FOR-RESET state.
  • Unexpected mechanical movement during system reset.
  • Servo drive or actuator not holding position.
  • Interference causing unintended axis motion.
  • Control signal error for position holding.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Verify the mechanical system is completely stopped and secured before attempting a reset.

  2. 2

    Check the wiring and functionality of the Reset input to ensure it is reliably FALSE when commanded.

  3. 3

    Inspect the position sensor and its input channel (FB instance, Position parameter) for intermittent readings or noise.

  4. 4

    Ensure the process logic correctly sequences the Reset command only when the system is static and safe.

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Verified technical data. Last updated: March 2026

Related Faults

Source: Beckhoff TwinSAFE Logic FB