ConnectionFaulted

Owner-Controller Connection Fault

Allen-Bradley · Compact 5000 Digital I/O Modules

What does ConnectionFaulted mean?

This module-wide fault indicates that the owner-controller has lost its communication connection to the module. This condition affects all channels simultaneously and can be caused by network issues or a deliberate module inhibition. The tag provides module-wide data.

Common Causes

  • Physical disconnection or damage of the EtherNet/IP communication cable to the module or network switch
  • Network communication failure (e.g., unresponsive switch port, IP address conflict)
  • Module power loss or reset
  • Controller transition to Program mode, inhibiting active communication
  • Module explicitly inhibited in the Studio 5000 Logix Designer application

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Verify the physical EtherNet/IP cable connection at the module and at the network switch. Ensure the cable is secure and undamaged.

  2. 2

    Check the link and activity status indicators on the module's EtherNet/IP port and the corresponding network switch port.

  3. 3

    From the controller's network, attempt to ping the module's configured IP address to verify network connectivity.

  4. 4

    Verify the module's power supply and status indicators to ensure it is powered on and not in a fault state.

  5. 5

    In the Studio 5000 Logix Designer application, verify that the module is not inhibited.

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Verified technical data. Last updated: March 2026

Related Faults

Source: Allen-Bradley Compact 5000 Digital I/O Modules