1 (Argument: 10)

Serial EEPROM Initialization Fault

Wago · PFC200 PLC

What does 1 (Argument: 10) mean?

A fault occurred during the initialization of the serial EEPROM. This prevents the controller from properly accessing or configuring its non-volatile memory during startup, which can halt system operation or prevent it from loading essential settings.

Common Causes

  • Hardware malfunction of the serial EEPROM.
  • Corrupted data within the EEPROM preventing successful initialization.
  • Issues with the controller's internal bus preventing access to the EEPROM during startup.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Switch off the power supply to the controller.

  2. 2

    Reduce the number of I/O modules connected.

  3. 3

    Switch the power supply back on to the controller.

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Verified technical data. Last updated: March 2026

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