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4 (Argument: --)

Max I/O Modules Exceeded

Wago · PFC200 PLC

Was bedeutet 4 (Argument: --) ?

The maximum permissible number of I/O modules connected to the controller has been exceeded. This prevents proper system initialization and operation due to hardware limitations on the I/O bus capacity.

Häufige Ursachen

  • Too many I/O modules physically connected to the controller's internal data bus beyond the specified limit.
  • Controller hardware limitation on the total number of I/O modules supported.
  • Configuration error in the PLC program attempting to address more I/O modules than are physically allowed.

Reparaturschritte & Checkliste

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

  1. 1

    Switch off the power supply to the controller.

  2. 2

    Reduce the number of I/O modules connected to an acceptable value.

  3. 3

    Switch the power supply back on to the controller.

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Verifizierte technische Daten. Zuletzt aktualisiert: March 2026

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