EtherCAT Communication Diagnosis Steps

This topic covers the steps to diagnose EtherCATClosed ***EtherCAT is an open, high-performance Ethernet-based fieldbus system. The development goal of EtherCAT was to apply Ethernet to automation applications which require short data update times (also called cycle times) with low communication jitter (for synchronization purposes) and low hardware costs communication errors, and provides examples for how an application program can help a technician detect the issue and repair it.

Diagnosing EtherCAT Communication Errors

The flow chart below explains the steps involved in diagnosing the EtherCAT errors.


  • The blue fields in the flow chart are clickable. Each points to sample code that can be used in a program to help with diagnosis.

Code Examples for Diagnosing EtherCAT Communication Errors