SCHNEIDER Magelis range Graphic XBT-F / TXBT-F Instruction Manual

Magelis XBT-L1000 Human Machine Interface Terminal: The Core of Industrial Automation Communication and Control

Introduction: The Evolution of Human Computer Interaction in Industrial Automation

In the field of industrial automation, efficient and reliable human-machine interaction is the key to achieving production monitoring, process control, and system maintenance. Schneider Electric's Magelis series of graphic terminals, especially products based on the XBT-L1000 software platform, represent the maturity and integration of industrial human-machine interface technology from the late 20th century to the early 21st century. This manual provides a detailed explanation of the software and hardware architecture, application development methods, communication principles, and operating specifications of XBT-F and TXBT-F series terminals, providing engineers and system integrators with a complete human-machine dialogue solution.

Overview of Terminal Series and Hardware Features

The Magelis series offers a diverse range of terminal models to meet the needs of different industrial scenarios. The XBT-F series includes 5-inch and 10 inch specifications, with the latter available in monochrome STN or color TFT displays, with resolutions of 320x240 and 640x480 pixels, respectively. The terminal comes standard with static and dynamic function keys, system keys, and numeric keys, supports downloadable communication protocols, and provides a printer interface. Of particular note is that touch screen models (such as XBT-F 032/034) use a resistive matrix touchpad, providing an intuitive operating experience, while TXBT terminals integrate the Windows 95 operating system, hard drive, and ISA bus expansion capabilities, making them even more powerful.

All terminals are designed to be powered by 24VDC, comply with IP65 protection level, and can operate stably in industrial environments ranging from 0-45 ° C. The built-in PCMCIA card slot is used to store application, protocol, and recipe data. The alarm history record capacity reaches 500 events, and the recipe function supports up to 125 sets of records and 5000 variable values, greatly meeting the data management needs of complex processes.

Application Architecture and Page Design Philosophy

A Magelis application represents the complete dialogue between users and automated processes. Its core is a collection of pages organized in a tree structure, including application pages, alarm pages, help pages, recipe pages, and other types. Each type of page can be associated with a template page, which contains common static elements such as company logo, borders, and status bar, ensuring interface consistency and development efficiency.

The application page is the main interface for monitoring system status, performing operations, and modifying parameters. It consists of three parts: application area, status line, and alarm bar. The application area can include static text, variable fields, static/dynamic graphic objects, and function keys.

The alarm page is dedicated to displaying control system faults and corrective measures. Each alarm page is associated with one or more PLC bits, can be assigned priority levels of 1-16, and supports operator confirmation, event recording, and timestamp functions.

The recipe page is based on a specific application model and is used to "record" the process status at a certain moment, manually adjust parameters, and store them locally on the terminal. It can save up to 5000 variable values to avoid duplicate input.

The help page provides contextual auxiliary information for operators, enhancing the usability of the system.

The form page is only for printing and can generate measurement reports, production tracking labels, etc.

Function keys and process control logic

The terminal achieves discrete control through static (global) and dynamic (page related) function keys. There are two types of control:

Instant contact command: The PLC bit associated with the button is 1 during pressing, and it resets to 0 after release. It is suitable for scenarios such as motor start stop.

Self locking command: Press the set button for the first time and press the reset button again, suitable for scenarios such as conveyor belt advance that require maintaining the state.

The configuration of dynamic function keys and the binding of display pages can achieve page jumping, bit control, field selection, and even launch Windows 95 applications (TXBT). The touch screen terminal replaces physical buttons with touch icons and is configured similarly using XBT-L1000 software.

PLC and Terminal Communication Dialogue: Core Mechanism

Communication is the cornerstone of the collaborative work between terminals and PLCs. All command and status data are exchanged through the "dialogue table" located in the PLC memory. This table consists of continuous words (16 bits), and its length and content can be configured through XBT-L1000 software.

Data association fields: As a client, the terminal always actively initiates read and write operations on variables (words, double words, floating point words, bits) in the PLC, without the need to write additional PLC communication programs.