FB MUTING Bit 8

Muting Input 1/2 Discrepancy Not Reset

Beckhoff · TwinSAFE Logic FB

What does FB MUTING Bit 8 mean?

A discrepancy error in 'MuteIn1'/'MuteIn2' was detected and has not yet been acknowledged or reset. This indicates a persistent underlying issue with muting input group 1 that needs active resolution and acknowledgment before normal operation can resume. The system will remain in a safe, stopped state.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    Verify that the physical conditions causing the discrepancy are no longer present (e.g., sensor issue resolved, wiring fixed).

  2. 4

    Monitor the 'MuteIn1' and 'MuteIn2' signals to confirm stable, synchronized operation after troubleshooting.

Source: Beckhoff TwinSAFE Logic FB
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