ANSI ISA 101.01-2015 PDF

Full title and description

ANSI/ISA‑101.01‑2015 — Human Machine Interfaces for Process Automation Systems. This American National Standard defines terminology, models and lifecycle processes for the design, implementation, operation and maintenance of human‑machine interfaces (HMIs) used in process automation systems, with the goal of improving operator situational awareness, safety, usability and operational performance.

Abstract

Provides a lifecycle framework and practical guidance for developing effective HMIs for continuous, batch and discrete processes. Topics include human‑centered design principles, display levels and structures, navigation and interaction methods, alarm and event presentation, performance/usability considerations, and governance for ongoing HMI maintenance and improvement.

General information

• Status: Current (available from ISA as an American National Standard).
• Publication date: Approved July 9, 2015 (ANSI approval date listed in the standard).
• Publisher: International Society of Automation (ISA).
• ICS / categories: Industrial process measurement and control (ICS 25.040.40) and related IT/application categories (commonly associated with 35.240 Applications of information technology).
• Edition / version: Edition 1 (ANSI/ISA‑101.01‑2015).
• Number of pages: Approximately 62–64 pages (commercial listings and the published PDF list page counts in this range).

Scope

Applies to the design, implementation, operation and maintenance of HMIs used to interface with control systems in process industries. The standard addresses HMI philosophy, terminology, display structure (level 1–4 concepts), work processes across the HMI lifecycle, and recommended practices to support safer and more effective operator decision‑making across normal and abnormal conditions.

Key topics and requirements

• HMI lifecycle model: specification, design, implementation, operation, maintenance and decommissioning.
• Human‑centered design principles to support situational awareness and reduce operator error.
• Display structure and levels (navigation, Level‑1 overview displays through Level‑3/4 detailed and diagnostic screens).
• Alarm and event presentation strategies aligned with alarm management best practices.
• Consistency, salience and hierarchy for information presentation (colors, symbols, text, trends).
• Usability and performance measurement; guidance for specifying and validating HMI performance.
• Governance: HMI philosophy, style guides, development workflows, training and change management.

Typical use and users

Target audiences include control system designers, HMI/SCADA engineers, control room operators, operations managers, human factors and ergonomics professionals, and system integrators. Typical uses are new HMI design, HMI upgrades, usability/performance assessments, alarm display redesign and establishing HMI governance or style guides for multi‑site operations.

Related standards

Commonly referenced and complementary documents include ISA technical reports in the ISA‑101 family (for example ISA‑TR101.02‑2019 on HMI usability and performance), ANSI/ISA‑18.2 (alarm management) guidance, ISO 11064 (ergonomic design of control centres), and more recent international work such as IEC 63303 (Human Machine Interfaces for Process Automation Systems, 2024) and IEC 62682 (alarm management). These documents address overlapping topics (ergonomics, alarm management, HMI performance and system architecture) and are frequently used together with ANSI/ISA‑101.01‑2015 in projects.

Keywords

HMI, Human‑Machine Interface, process automation, SCADA, control room, operator displays, situational awareness, usability, HMI lifecycle, alarm management, style guide.

FAQ

Q: What is this standard?

A: ANSI/ISA‑101.01‑2015 is an American National Standard that provides requirements and recommended practices for designing, implementing and maintaining human‑machine interfaces used in process automation systems.

Q: What does it cover?

A: It covers HMI terminology and models, a lifecycle approach (from specification through decommissioning), display level concepts, human factors considerations, usability/performance guidance, and work processes for long‑term HMI governance and maintenance.

Q: Who typically uses it?

A: End users (operators), HMI/SCADA designers, system integrators, human factors specialists, control engineers and operations managers use the standard for new HMI projects, upgrades, usability assessments and to establish HMI policies and style guides.

Q: Is it current or superseded?

A: As published in 2015, ANSI/ISA‑101.01‑2015 remains the ISA HMI standard and is listed as the ANSI/ISA‑101.01‑2015 edition; ISA and standards vendors continue to list it as the current edition. Independent international work (for example IEC 63303:2024) has since harmonized related HMI requirements at the international level but does not replace the ANSI/ISA standard for U.S. national use.

Q: Is it part of a series?

A: Yes — it is the core ISA‑101 family standard on HMIs; ISA has published supporting technical reports (for example ISA‑TR101.02‑2019) and guidance that expand on usability, performance and HMI philosophy.

Q: What are the key keywords?

A: HMI, human‑machine interface, situational awareness, operator displays, lifecycle, usability, alarm presentation, control room ergonomics, style guide.