HMI

HMI 

HMI (Human Machine Interface) is a device or software that is used to communicate with the machines or groups of machines in the plant or production area.

HMI is mainly used for,

To monitor or visualize the process

To control the process

To visualize trends, alarms, etc.

HMI may come in the form of the built-in screen on machines, computers, tablets, etc. but after all these forms the purpose is the same as an interacting human with machines.