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ErrorLib — Industrial Fault Code Library

Disclaimer: ErrorLib is an independent technical reference tool. While we aim for accuracy, always verify with the manufacturer’s official service manuals before performing maintenance on industrial equipment. ErrorLib is not affiliated with the brands listed.

32

EEPROM Fault

Allen-Bradley · 160

What does 32 mean?

This fault indicates that the controller's EEPROM (Electrically Erasable Programmable Read-Only Memory) contains invalid or corrupted data. This memory stores critical operating parameters. Corrupted data can lead to improper controller operation or an inability to function correctly.

Common Causes

  • Corrupted parameter data due to power fluctuations or improper power-down sequences.
  • Hardware defect within the EEPROM chip itself, preventing reliable data storage or retrieval.
  • Electromagnetic interference (EMI) causing transient corruption of EEPROM contents during read/write cycles.
  • Firmware bug or corrupted firmware affecting EEPROM access and data integrity.
  • Repeated failed attempts to write parameters, leading to write errors and corruption.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    1. Attempt to reset controller parameters to factory defaults (e.g., set P0-01 to 100 for reset, then power cycle).

  2. 2

    2. Re-enter all necessary application-specific parameters (e.g., P1-08, P1-09) manually after a factory reset.

  3. 3

    3. Isolate the controller from potential EMI sources by ensuring proper grounding, shielding, and separation of power and control wiring.

  4. 4

    4. Check the controller's supply voltage stability. Ensure it remains within specified limits, especially during power-up and power-down cycles.

  5. 5

    5. If available, try to reload controller firmware using the manufacturer's specified tool and procedure.

Browse all codes in this manual (18)
Verified technical data. Last updated: April 2026

Related Faults

03Power Loss Fault04Under Voltage Fault05Over Voltage Fault
Source: Allen-Bradley 160
View Official PDFSearch more codes in this manual