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What makes an HMI intuitive?

Article#: 00110

Date: 2025-06-25

Author: Radim



HMI screen

An intuitive human machine interface (HMI) enables users to interact with machines and processes naturally and efficiently, even if they have received little or no training. This applies to all forms of human machine interface, from simple buttons and LED lights to complex graphical user interfaces on a screen or touch panel.

1. Familiarity:
Use of standardized industry icons, color coding and layouts that align with user expectations.
Related elements are visually and spatially grouped.
The design suggests how to interact with controls.

2. Consistency:
Behaviors, terminology, and visual patterns are uniform across all screens and components - physical or digital.

3. Clarity:
Texts and symbols are easy to understand, clear and originate from the user's language or symbolic domain.
Visual hierarchy, spacing and contrast guide the eye naturally to the most important information.
The current status of machines, processes and alarms is always clearly indicated.

4. Feedback:
Systems show confirmation of user input. Feedback is provided promptly, clearly and in a form that corresponds to the context of the input.

5. Simplicity:
Only the necessary controls and information are shown for the current context. Advanced or detailed data is available, but not in a set with primarily the most important information - users can view advanced information if needed.

6. Error prevention and recovery:
The interfaces are designed to prevent accidental misoperation. (For example, performing an irreversible action requires additional confirmation.)
Error messages clearly state what happened and guide the user toward resolution.

7. Role-specific screens and views:
Different users (operators, maintenance, supervisors) have different tasks and information needs. A good HMI supports each role with the right level of detail and control.

8. Abstract model of reality:
An HMI is not the machine - it's an abstraction of the machine or process. The interface should align with how users mentally model the system: the layout, flow, symbols, and cause-effect logic should reflect the physical or functional reality the user expects. The closer the HMI matches the real-world process (or the operator's mental model of it), the more intuitive and trustworthy it becomes.

© Radim-Automation, 2020–2025. All rights reserved.
Sharing of this article is permitted with proper attribution (link to the original page).


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Comment#: 00001

Date: 2025-06-28

User:

Кулинарный гид в одном месте! От супов до десертов — здесь есть всё с четкими инструкциями. Особенно популярен раздел с рецептами от шеф-поваров. Ресурс уже стал фаворитом у многих семей.

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