Communication Error (Group)

What does GROUP Value 2 mean?

At least one TwinSAFE connection within the EL/EJ69x0 group is faulty. This implies a disruption or loss of communication between safety devices or across the EtherCAT network for safety-relevant data. This will prevent safe operation and necessitate immediate investigation of network integrity, as safety communication is compromised.

• Disruption of the EtherCAT network communication to one or more TwinSAFE terminals (e.g., EL6900 module at Address 1002).
• Broken or loose EtherCAT cable connection (e.g., RJ45 connector at port X02 on EL69x0) causing loss of FSoE (Fail-Safe over EtherCAT) messages.
• Incorrect FSoE network configuration, such as mismatched connection IDs or an excessively short FSoE watchdog time (e.g., P7-03).
• Internal hardware fault within a TwinSAFE I/O module (e.g., EL1957, EL2904) preventing it from participating in FSoE communication.

Click steps to track your progress.

1. 1

   1. Check the EtherCAT network diagnostics in TwinCAT System Manager for topology errors, lost frames, or disconnected devices.

2. 2

   2. Inspect all EtherCAT patch cables and connectors in the safety network segment for damage or secure connections.

3. 3

   3. Verify the FSoE connection watchdog time parameter (e.g., P7-03) and connection IDs for consistency across all TwinSAFE devices.

4. 4

   4. Power cycle the affected TwinSAFE modules (e.g., EL69x0, EL1957) and the EtherCAT coupler.

5. 5

   5. Ensure the EtherCAT master is stable and not experiencing its own communication issues (e.g., network adapter driver problem).