An HMI is an operator interface used to display machine status, enter parameters, manage alarms, recipes and production data.
Human Machine Interface (HMI) is relevant when selecting, integrating, replacing or troubleshooting industrial automation equipment. The exact engineering requirement depends on the controller, machine process, interfaces, safety requirements and maintenance strategy.
This definition is intended as a technical reference. Product compatibility, safety performance and final selection must be confirmed against the latest manufacturer documentation and the actual machine conditions.