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ErrorLib — Industrial Fault Code Library

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A295.10

Illegal Area Access Error

Omron · SYSMAC CJ2 CPU Unit

What does A295.10 mean?

This flag indicates an Illegal Area Access Error. This fault occurs when the program attempts to read from or write to a memory area that it does not have permission to access, is outside of defined boundaries, or is reserved by the system. This is a critical memory protection violation.

Common Causes

  • Attempting to access a protected or undefined memory region (e.g., system reserved area, non-existent address).
  • Array indexing out of bounds, trying to read/write beyond allocated array size.
  • Corruption of pointer variables leading to invalid memory addresses.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Review program code extensively for memory access instructions to ensure they target valid and accessible data areas.

  2. 2

    Carefully check array bounds and pointer operations to prevent out-of-range access.

  3. 3

    Implement robust data validation for any calculated memory addresses before attempting access.

Browse all codes in this manual (27)
Verified technical data. Last updated: April 2026

Related Faults

A10101Synchronous Input Data Refresh ErrorA259.12Task ErrorA295.09Indirect DM/EM Addressing Error
Source: Omron SYSMAC CJ2 CPU Unit
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