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3040H

Start-up in Normal Mode with Safety Validated

Mitsubishi Electric · MELSEC iQ-R I/O Module

Was bedeutet 3040H ?

This error occurs when the I/O module with diagnostic functions is started in normal mode, but its safety module function remains enabled. The module will not operate normally until the safety module function is successfully disabled, as indicated by 'Disable (0)' in Validation status area (Un\G5377).

Häufige Ursachen

  • I/O module with diagnostic functions started in normal mode while the safety module function is still enabled.
  • 'Enable (1)' is stored in Validation status area (Un\G5377), indicating the safety function is active despite being in normal mode.

Reparaturschritte & Checkliste

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

  1. 1

    Set Command area for module invalidation (Un\G5376) to 1234H.

  2. 2

    Turn on and off 'Operating condition setting request' (Y12).

  3. 3

    Verify that Validation status area (Un\G5377) now stores 'Disable (0)'. If not, recheck Un\G5376 value and cycle Y12 again.

  4. 4

    Reset the CPU module, or cycle the programmable controller's power to restart the I/O module with diagnostic functions.

  5. 5

    Check that the ALM LED on the I/O module is off, indicating normal operation.

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Verifizierte technische Daten. Zuletzt aktualisiert: March 2026

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Quelle: Mitsubishi Electric MELSEC iQ-R I/O Module