Industrial operator interfaces play a pivotal role in the performance of modern machinery. An effective HMI enhances the operator experience, optimizes machine diagnostics, reduces downtime, and accelerates maintenance. Schneider Electric’s Harmony Basic HMI range is designed to meet the needs of simple to mid-range machines while incorporating modern features related to Industry 4.0, cybersecurity, and IIoT connectivity.

Unlike older, performance-limited "basic" HMIs, the new Harmony ST6 and STM6 generations offer high-resolution, 16-million-color displays, Web Viewer functions, advanced Ethernet communications, and full integration into the EcoStruxure™ ecosystem.

The Harmony ST6 is a range of operator interfaces (HMIs) developed by Schneider Electric for simple to mid-range industrial machines. It enables operators to visualize, monitor, and control industrial equipment via a modern touchscreen.

Positioned as a next-generation Basic HMI, the ST6 is gradually replacing older entry-level interfaces by offering significantly superior graphics performance, connectivity, and cybersecurity. It currently stands as one of the best Basic HMI solutions for modern industrial automation projects.

High-resolution touchscreen: Sharper images, more readable text, and a modern interface that facilitates operators' daily tasks.

16-million-color display: Ensures excellent visibility for alarms, graphs, and production indicators.

Integrated Ethernet connectivity: Easy connection to PLCs, industrial networks, and supervisory systems for improved equipment monitoring.

Remote access: The Web Viewer allows users to view and operate the interface from a PC, tablet, or smartphone.

Quick, tool-free installation: Mounting system designed to reduce installation time and simplify device replacement.

Built-in cybersecurity: Enhanced communication and data protection to meet the demands of modern factories.

Industry 4.0 and IIoT compatible: Ready for data collection, remote maintenance, and integration with Schneider Electric cloud solutions.

Multiple sizes available: Offered in 4", 7", 10", 12", and 15" models to suit any machine.

The Harmony STM6 is a modular, entry-level HMI (Human-Machine Interface) designed for simple to mid-range machines requiring flexible installation, rapid maintenance, and excellent connectivity. It perfectly complements the Harmony ST6 range by offering a unique modular architecture with standard 22 mm hole mounting.

Unlike traditional HMIs, it separates the screen and the electronics using a modular system that simplifies installation, reduces the space required in the cabinet, and facilitates maintenance.

High-resolution touchscreen: Modern interface with a clear display and vivid colors (16 million colors) for enhanced visualization of machine data.

Ultra-fast installation: Innovative mounting system for standard 22 mm holes—tool-free and requiring no complex panel cutouts. This reduces installation time and integration costs.

Modular design: The screen and electronic unit can be separated, facilitating installation in tight spaces and simplifying maintenance.

Advanced industrial connectivity: Dual Ethernet ports, USB ports, and integrated serial communication for easy connection to PLCs, industrial networks, and supervisory systems.

Enhanced security: Built-in cybersecurity features to protect communications and enable secure remote access.

Simplified maintenance: Documentation accessible via QR code, replaceable modules, and a design focused on minimizing downtime.

Industry 4.0 compatible: Ready for data collection, remote visualization, and integration into EcoStruxure connected architectures.

Designed for industry: Advanced industrial certifications (Marine, Class 1 Div 2, IP65) for use in demanding environments.

The Harmony STO is a compact HMI (Human-Machine Interface) designed for simple machines requiring effective, low-cost visualization. It is an excellent solution for space-constrained applications while offering essential monitoring and control functions.

4.3-inch color screen: The STO features a 4.3-inch color TFT screen with a resolution of 480 x 272 pixels, offering excellent visibility of production data and operator controls.

Optimized display format: Thanks to its wide screen, the STO provides more display space than many traditional compact HMIs in the same class, making navigation and information reading easier.

Multiple communication options: The STO range is available in various versions to meet the connectivity needs of industrial machinery. This enables flexible integration with a wide range of automation equipment.

Proven programming software: The STO uses Vijeo Designer software, known for its ease of configuration and broad compatibility with Schneider Electric products.

The Harmony STW6 is a Web HMI designed for modern industrial environments. Unlike a traditional HMI, the STW6 acts as an HTML5 web client, enabling the display of interfaces from PLCs, SCADA systems, IIoT equipment, or any device equipped with a web server. It offers a flexible, cost-effective solution that is ready for the digital transformation of factories.

Native HTML5 web visualization: Pre-installed HTML5 browser allowing direct display of web pages generated by PLCs, SCADA systems, OPC UA servers, or connected equipment.

No traditional HMI software required.

Wide range of screen sizes: 4-inch (HMISTW6200) / 7-inch (HMISTW6400) / 10-inch (HMISTW6500) / 12-inch (HMISTW6600) / 15-inch (HMISTW6700).

High-resolution, 16-million-color display: High-resolution screen offering up to 16 million colors, ensuring excellent display quality for dashboards, web interfaces, and modern industrial applications.

Advanced industrial connectivity: The STW6 is equipped with industrial Ethernet ports and can access web servers on the industrial network. It integrates easily with Schneider Electric connected architectures and IIoT solutions.

Multi-platform compatibility: The STW6 can visualize web pages from various HTML5-compatible industrial systems.

Industry 4.0 ready: Thanks to its native web technology, the STW6 facilitates the integration of industrial data into modern digital architectures.

Quick installation: Tool-free mounting system.

The Harmony STU is a compact operator interface (HMI) designed for small machines and simple applications that require a high-performance touchscreen while minimizing cabinet space. Unlike traditional HMIs, the STU features an innovative architecture with a remote rear unit, allowing for installation without a large panel cutout.

Color TFT touchscreen: offers an intuitive interface and excellent visibility.

Mounting: compact 22 mm design for quick and easy installation in control panels.

Connectivity: advanced industrial connectivity, including Ethernet, Modbus TCP, RS-232, and RS-485, depending on the model.

USB ports: integrated for project transfer, updates, and maintenance.

Compatibility: compatible with EcoStruxure Operator Terminal Expert and Vijeo Designer for easy creation of modern graphical interfaces.

Format: compact and cost-effective, ideal for machine builders (OEMs) and industrial automation applications.