F108

Baton Pass Error (Baton Duplicated)

Mitsubishi Electric · MELSEC Q-series MELSECNET/H

What does F108 mean?

A duplicate baton has been detected on the network, indicating a configuration error or physical fault that could lead to communication conflicts and instability. This typically arises from incorrect station numbering or control station settings.

Common Causes

  • Duplication of station numbers across the network
  • Duplication of control station settings
  • Faulty network cables, wire breakages, or faulty connector connections
  • Uninstalled or loose terminal resistors

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Execute the setup confirmation test (Section 4.8.2 or 3.8.2) to check for duplicate station numbers

  2. 2

    Execute the setup confirmation test (Section 4.8.2 or 3.8.2) to check for duplicate control station settings

  3. 3

    Inspect all network cables for physical damage, wire breakages, or faulty connector connections

  4. 4

    Verify that all terminating resistors are correctly installed and securely connected

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Verified technical data. Last updated: March 2026

Related Faults

Source: Mitsubishi Electric MELSEC Q-series MELSECNET/H