The Pro-face handheld touchscreen model AGP3500-S1-AF is a robust and versatile human-machine interface (HMI) designed for industrial environments where mobility and operator safety are critical. Operating on a DC24V power supply, this handheld-grade unit is engineered for reliable performance in demanding production settings. It features a yellow emergency stop switch with a key lock mechanism, ensuring quick and secure shutdowns in emergency situations, while also preventing unauthorized operation.

The display is a 5.7-inch STN pseudo-color LCD with a resolution of 320×240 pixels (QVGA), capable of rendering up to 4,096 colors for clear and detailed visual feedback. The backlight uses a white LED, which requires factory service for replacement. Users can adjust brightness across 16 levels directly through the touch panel interface, which employs a resistive (analog) touch technology for precise input even when wearing gloves or in harsh conditions.

Data management is streamlined through the use of USB memory sticks or CF cards, enabling rapid backup of daily and monthly reports. The built-in recording functionality enhances report generation efficiency, while CSV data conversion allows operators to modify PLC settings directly from the GP unit. The device also supports PC-based simulation, allowing users to test all screen operations, including D scripts and logic scripts, without transferring the project to the GP unit. This feature significantly reduces development and debugging time.

Remote operation and monitoring are made possible by accessing the GP screen from a remote location, such as an office, without requiring additional screen editing or programming. This capability supports real-time management and more efficient remote maintenance. Error visualization is enhanced by connecting controllers directly to the GP and using sample components to display critical error information, helping operators quickly identify and address issues.

The AGP3500-S1-AF also enables PLC programming and debugging through the GP unit via a data pass-through function. This allows users to adjust ladder logic programs and modify production line data without opening the control cabinet, improving efficiency and safety. Five key functions are designed to boost overall productivity.

The GP-Pro EX software environment simplifies screen creation with an intuitive interface that supports drag-and-drop and point-and-click actions. Even beginners can quickly learn to design professional screens using features such as 3D components, image fonts, and other advanced capabilities. The software also supports video-based operation and maintenance instructions, reducing training costs and ensuring that operators can easily follow procedures.

Upgrading from older models is straightforward, as the GP/ST series supports screen data from all previous GP models, including the first-generation GP10 series. The product family maintains panel cutout compatibility, making physical replacement simple and cost-effective. A wide library of sample screens and 3D components further reduces programming time, allowing users to create visually appealing and intuitive interfaces quickly.

Data transfer via USB memory is convenient for updating screen data in response to production line changes. Security is enhanced through password management, which assigns access levels based on operator or supervisor roles. Each user must enter an ID and password before operating the equipment, ensuring that only authorized personnel can perform specific tasks and minimizing potential issues on the production floor.