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ErrorLib — Industrial Fault Code Library

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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

Browse all codes in this manual (60)
Verified technical data. Last updated: April 2026

Related Faults

F105Initial Status with Baton/Data Link IssueF106Control/Sub-control Station Shift StatusF107Baton Pass Error (Baton Lost)
Source: Mitsubishi Electric MELSEC Q-series MELSECNET/H
Open Manual (Page 165)Search more codes in this manual