Diag History

The diagnostic history (Diag History) is a tool for monitoring the status of the Ethernet/IP interface and displaying the diagnostic messages with time stamp in plain text.

In addition, information / errors that occurred in the past are logged, in order to enable precise troubleshooting at a later stage. This also applies for errors that only occurred for such a short time that any corresponding messages were not visible.

The diagnostic history is part of the TwinCAT system, where it can be found under Devices, EtherNet/IP in the Diag History tab: