HMI

HMI definition - computer

(Human Machine Interface) The user interface in a manufacturing or process control system. It provides a graphics-based visualization of an industrial control and monitoring system. Previously called an "MMI" (man machine interface), an HMI typically resides in an office-based Windows computer that communicates with a specialized computer (DCS, PLC or PAC) in the plant. Contrast with OI. See DCS, PLC, PAC, GUI and user interface.


_HMI.GIF


In the Office

Typically located in an office, an HMI offers the same rendering capability found in today's graphical user interfaces. Designed by RCK Controls, this is a partial screen shot of an HMI used in the recovery filter operation at the Georgia Aquarium in Atlanta. (Image courtesy of Opto 22, www.opto22.com)






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