F707

Invalid Number of Relay Stations

Mitsubishi Electric · MELSEC Q-series MELSECNET/H

What does F707 mean?

The number of relay stations specified for a transmission is outside the permissible range or 8 or more relay destination stations were specified. This is a system configuration error.

Common Causes

  • Number of relay stations is out of the allowed range
  • 8 or more stations were specified as relay destinations

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Adjust the system configuration to set the number of relay stations to which data can be sent within the valid limit (implied to be less than 8)

  2. 2

    Review the entire network system architecture for excessive relay station usage

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Verified technical data. Last updated: March 2026

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Source: Mitsubishi Electric MELSEC Q-series MELSECNET/H