ANSI/ISA-101.01:2015

Human Machine Interfaces for Process Automation Systems, is a comprehensive standard for the design, implementation, operation and maintenance of Human Machine Interfaces (HMIs) in process automation systems. It establishes a lifecycle model covering system standards development (including HMI philosophy, style guide and toolkits), design processes (console, system, user/task requirements, display design), implementation (building, testing, training, commissioning, verification), operation (in-service use, maintenance, decommissioning) and continuous work processes such as management of change, audit and validation.
ISA-101.01 emphasizes human factors engineering (HFE) to optimize usability by considering sensory and cognitive limits, consistent design, situation awareness and ergonomic principles. It details display styles and hierarchical structures for effective information presentation, user interaction methods including data entry and navigation, hardware interface considerations and performance metrics like call-up times and refresh rates.
Training requirements for various user groups are also outlined to support effective HMI use. The goal is to improve safety, efficiency and operator effectiveness across all operating conditions without mandating specific platforms or technologies.