0x401F

Press Not Moving After Start Command

Beckhoff · TwinSAFE Logic FB

What does 0x401F mean?

The PressStarted input was TRUE, commanding the press to move, but the position did not change (or 'Stopped' did not become FALSE) within the PressStartedDelayTime. This indicates a failure to initiate motion after the start command, potentially due to a mechanical jam or drive issue, preventing operation.

Common Causes

  • Press mechanism did not move after receiving a start command.
  • Actuator or motor failed to engage.
  • Insufficient power supply to the drive system.
  • Mechanical obstruction preventing movement.
  • Faulty start command signal or logic.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the mechanical system for obstructions, jams, or insufficient power/force to initiate movement.

  2. 2

    Verify the motor, actuator, and associated power components for correct operation and wiring.

  3. 3

    Inspect the position sensor to ensure it is detecting movement correctly and not stuck at a fixed value.

  4. 4

    Review the PressStartedDelayTime parameter to ensure it is adequately set for the expected start-up sequence.

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Verified technical data. Last updated: March 2026

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Source: Beckhoff TwinSAFE Logic FB