00D6

Block-transfer write request failed

Allen-Bradley · Logix 5000

What does 00D6 mean?

The scanner received a response from the block-transfer module indicating that the write request failed. This means the data could not be successfully written to the module.

Common Causes

  • The scanner received a response from the block-transfer module indicating the write request failed

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Inspect the status indicators (LEDs) on the block-transfer module and its communication adapter for any fault, error, or communication issues.

  2. 2

    Verify stable power supply voltage to the block-transfer module and inspect all associated communication cables for proper connection and integrity.

  3. 3

    Check the Logix 5000 controller's I/O configuration and the block-transfer module's configuration to ensure they are consistent in terms of module type, revision, and data mapping.

  4. 4

    Review the block-transfer module's specific diagnostics or status bits within the Logix 5000 controller's I/O tree for more detailed error information about the failed write request.

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Verified technical data. Last updated: March 2026

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