This document defines general structures and functions of HMI systems.

An HMI life cycle example for HMI systems is included.

This document specifies requirements and recommendations for activities in each stage of the life cycle including designing, using, and maintaining the HMI system.

It also provides requirements and recommendations for functions and performance of HMI systems.

The requirements and recommendations in this document are applicable to any controlled process using an HMI to interface to a control system. There can be differences in implementation to meet the specific needs based on the application and controlled process type.