SNLA495 February   2026 DP83826E , DP83826I , TMS320F28P650DH , TMS320F28P650DK

 

  1.   1
  2.   Abstract
  3.   Revision History
  4. 1EtherCAT Network and Slave Structure
  5. 2Criteria for EtherCAT Link Multi-Layer Detection
  6. 3Layered Troubleshooting Methods for EtherCAT Link Down Fault
    1. 3.1 ESC DL Port Status Check - Fault Localization
    2. 3.2 Enhanced Link Configuration Check
    3. 3.3 MI Link Configuration Check
    4. 3.4 Physical Layer Link Anomaly Troubleshooting
  7. 4F28P65 + DP83826 EtherCAT Link Down Troubleshooting Case
  8. 5Summary
  9. 6References

3 Layered Troubleshooting Methods for EtherCAT Link Down Fault

As described in Section 2, to troubleshoot the Link Down fault in EtherCAT applications, the user can efficiently and clearly identify the root cause by starting from the final outcome based on the multi-layer link detection criteria and working downward layer by layer. This section describes a layered troubleshooting method for the Link Down fault, based on the error registers described in Section 1.2 and the multi-layer EtherCAT link detection criteria described in Section 2.