When a machine malfunctions, what is typically shown on the machine's HMI?

When a machine malfunctions, the machine's Human-Machine Interface (HMI) typically displays an error message. This error message is designed to provide immediate feedback to the operator about what has gone wrong, enabling quick identification of the issue. It often includes a code or description of the problem, which helps the technician or operator troubleshoot the situation, determine the necessary corrective actions, or decide if the machine needs to be shut down for repairs.

In contrast, a diagnostic report usually contains more comprehensive information about the machine's performance over time, which is not specifically suited for immediate malfunction scenarios. A performance review pertains to overall assessment metrics rather than troubleshooting issues, and a maintenance schedule is focused on planned maintenance activities rather than urgent error reporting. Hence, the error message is the relevant and correct information displayed during a machine malfunction, as it directly addresses the need for immediate awareness and action.