3300

SP.PARA ERROR (Special Parameter Error)

Mitsubishi Electric · Q-series Programmable Controller

What does 3300 mean?

This fault code signifies a special parameter error detected within a CPU module, such as a Q06UDH. It indicates that an issue exists with the configuration or data integrity of a special parameter, potentially disrupting normal CPU operation. The error is identifiable in the 'Current Error' section of the System Monitor and requires specific troubleshooting steps to resolve.

Common Causes

  • Incorrect configuration or corruption of special parameters within the CPU module (e.g., Q06UDH).
  • An intentional error caused for testing or demonstration purposes (as described in the operation practice).

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Ensure the CPU is stopped before proceeding with any corrective actions.

  2. 2

    Format the PLC memory by accessing [Online] → [PLC Memory Operation] → [Format PLC Memory] in GX Works2.

  3. 3

    Execute a reset operation on the CPU module.

  4. 4

    Open GX Works2, navigate to [Diagnostics] → [System Monitor], and identify the specific module (e.g., Q06UDH) where the error occurred.

  5. 5

    Select the faulty module in System Monitor and click the Diagnostics button to review the 'Current Error' information, specifically '3300 SP.PARA ERROR'.

  6. 6

    For detailed troubleshooting and resolution steps specific to error '3300 SP.PARA ERROR', click the 'Error Help' button within the Current Error display.

Browse all codes in this manual (2)
Verified technical data. Last updated: March 2026

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Source: Mitsubishi Electric Q-series Programmable Controller