Acronym of Man Machine Interface.

A Man Machine Interface, or MMI is another term for an HMI, or Human Machine Interface. HMI is generally a more accepted, politically correct term than MMI. Both refer to an interface that users can utilize to visualize a process or a machine’s operations.

Man Machine Interface (MMI) is a software application (typically a using Graphical User Interface or GUI) that present information to the operator about the state of a process, and to accept and implement the operators control instructions. It may also interpret the plant information and guide the interaction of the operator with the system. A MMI is often a part of a SCADA (Supervisory Control and Data Acquisition) system; nevertheless, the terms are often used synonymously.

MMI products include Iconics Genesis (www.iconics.com), InduSoft WebStudio (www.indusoft.com), Proficy iFIX (www.gefanuc.com), and Wonderware (www.wonderware.com).

An MMI is also known as a Human Machine Interface (HMI).