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ErrorLib — Industrial Fault Code Library

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2400

File Set Error (Boot Setting)

Mitsubishi Electric · MELSEC-Q/L Common Instruction

What does 2400 mean?

This error occurs when the boot setting has not been configured in the PLC parameter, preventing the execution of a program replaced by the PSWAPP instruction. The system expects a program to be designated for boot. This ultimately prevents the newly swapped program from running, indicating a missing or incorrect system configuration for program execution.

Common Causes

  • The PLC parameter's boot setting is not configured for a specific program name.
  • Attempting to execute a program swapped by the PSWAPP instruction without a corresponding boot setting in PLC parameters.
  • The program setting in the PLC parameter for the corresponding program name is incorrect or undefined.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Access the PLC parameters via the programming software.

  2. 2

    Configure the boot setting in the PLC parameter to the program name intended for execution.

  3. 3

    If the program setting in the PLC parameter is also incorrect, update it for the corresponding program name.

  4. 4

    If the program was recently modified or transferred, write the correct program to the CPU module again after adjusting boot and program settings.

Browse all codes in this manual (11)
Verified technical data. Last updated: April 2026

Related Faults

1103Index Modification Writes to System Device2410Invalid Drive or File Name2413Insufficient Memory for Program Load
Source: Mitsubishi Electric MELSEC-Q/L Common Instruction
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