D

Axioline F Local Bus Error

Phoenix Contact · AXC F 1050 Controller

What does D mean?

This indicator signifies a problem with the Axioline F local bus communication. It can occur during active I/O checking (flashing yellow/red), during startup (flashing red), or while the bus is in RUN status (solid red). Common causes include configuration mismatches, missing devices, or communication issues preventing devices from being reached.

Common Causes

  • Configuration cannot be generated or information is missing from an Axioline F device.
  • Chip version of an Axioline F device is older than V1.1.
  • Deviation between the actual and required Axioline F local bus configuration.
  • No local bus device is physically connected to the station.
  • The maximum allowed number of local bus devices has been exceeded.
  • Communication error on the local bus during RUN status.
  • A local bus device has been physically removed or a configured device is missing.
  • A local bus device initiated a reset or experienced a serious device error rendering it unreachable.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Verify that all Axioline F local bus devices are physically connected and seated correctly.

  2. 2

    Check the controller's configuration in PC Worx Engineer and ensure it matches the actual connected Axioline F devices.

  3. 3

    Compare the chip versions of Axioline F devices against minimum requirements (e.g., V1.1).

  4. 4

    Confirm that the total number of connected Axioline F local bus devices does not exceed the controller's maximum limit.

  5. 5

    Use the controller's diagnostic interface to determine which specific local bus device is causing the error.

  6. 6

    Cycle power to affected local bus devices or the entire Axioline F station.

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Verified technical data. Last updated: March 2026

Related Faults

Source: Phoenix Contact AXC F 1050 Controller