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ErrorLib — Industrial Fault Code Library

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F820

Link Parameter Error (Corrupted)

Mitsubishi Electric · MELSEC Q-series MELSECNET/H

What does F820 mean?

The contents of the common parameters or parameters specific to a station are corrupted or broken, leading to a link parameter error. This prevents proper network communication and function.

Common Causes

  • Data corruption within common parameters
  • Data corruption within parameters specific to a particular station

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Correct the common parameters in the system configuration

  2. 2

    Correct the parameters specific to the affected station

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 162)Search more codes in this manual