between process and operators
The Human Machine Interface (HMI) is the interface between the process and the operators – in essence an operator’s dashboard. This is the primary tool by which operators and line supervisors coordinate and control the industrial and manufacturing processes in the plant. HMIs serve to translate complex process variables into usable and actionable information.
Displaying near real-time operational information is the domain of the HMI. Visual process graphics give meaning and context to motor and valve status, tank levels and other process parameters. HMIs give operational insight into the process and enable control and optimization by regulating production and process targets.