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ErrorLib — Industrial Fault Code Library

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3

Network Status: Partial network fault

Phoenix Contact · FL SWITCH 7000

What does 3 mean?

A localized issue has been detected within a segment of the Device Level Ring (DLR). While the entire ring may still be operational, this indicates that a portion of the network is experiencing a problem, potentially affecting communication for specific nodes.

Common Causes

  • Intermittent connection issues on a specific cable segment or DLR port.
  • A degraded cable segment that experiences high error rates without a complete break.
  • A single device within the ring experiencing a minor fault that doesn't fully disrupt the ring's integrity but degrades performance.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Use the "Verify Fault Location" button on the "DLR Status Information" web page (Figure 4-34) to pinpoint the affected segment by checking the IP addresses of "Last Node Port 1" and "Last Node Port 2".

  2. 2

    Inspect all DLR cables and connectors within the identified segment for any signs of physical damage, loose connections, or environmental stressors.

  3. 3

    Review the diagnostic logs of devices within the affected segment for any specific error messages or port status changes.

Browse all codes in this manual (4)
Verified technical data. Last updated: April 2026

Related Faults

1Network Status: Ring fault2Network Status: Unexpected loop detected4Ring Supervisor Status: Device cannot support operating ring parameters
Source: Phoenix Contact FL SWITCH 7000
Open Manual (Page 68)Search more codes in this manual