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ErrorLib — Industrial Fault Code Library

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1

Network Status: Ring fault

Phoenix Contact · FL SWITCH 7000

What does 1 mean?

The Device Level Ring (DLR) protocol has detected a fault, indicating a break in the ring topology. This condition compromises network redundancy and may lead to interrupted network traffic or communication failures within the ring.

Common Causes

  • Physical cable break in one of the DLR ports of a device.
  • Failure of a device integrated into the DLR, causing a disruption in the ring path.
  • Misconfiguration of a DLR port that prevents proper ring closure or communication.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Access the "DLR Status Information" web page (Figure 4-34) and click the "Verify Fault Location" button to identify the IP addresses of "Last Node Port 1" and "Last Node Port 2" where the error is detected.

  2. 2

    Physically inspect the cabling and connections at the devices identified by "Last Node Port 1" and "Last Node Port 2" for any signs of damage, disconnections, or loose contacts.

  3. 3

    Check the operational status and diagnostic logs of the devices connected at the identified fault locations for internal errors or power issues.

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

Related Faults

2Network Status: Unexpected loop detected3Network Status: Partial network fault4Ring Supervisor Status: Device cannot support operating ring parameters
Source: Phoenix Contact FL SWITCH 7000
Open Manual (Page 68)Search more codes in this manual