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.

Command and Status: The dialogue table contains commands sent by the PLC to the terminal (such as display page, lock button, request field input, print) as well as the status feedback from the terminal to the PLC (such as terminal mode, current display page, key mapping, timestamp, alarm confirmation status).

Security mechanism: The dialogue table contains an "authorization word", and the PLC must write a specific value specified by XBT-L1000 before the terminal can execute the write command and dialogue table processing, providing critical security for the system.

Alarm processing: The alarm is triggered by the word bits in the PLC, which form the alarm table and are part of the dialogue table. The terminal can handle alarms from multiple PLCs and support functions such as group management, priority sorting, and forced confirmation.

Application Development Process and XBT-L1000 Software

Developing a robust Magelis application requires a systematic approach. XBT-L1000 V3. x, as the core development tool, runs on Windows 95/NT environment and provides graphical interface, online help, and simulation functions.

Requirement analysis and specification definition: Clarify user requirements for production monitoring, control, and maintenance, determine dialogue architecture, data exchange volume, and network topology.

System architecture and communication definition: Determine the communication protocol (such as Unitelway, Modbus, Fipway, etc.) and the list of devices accessible to the terminal based on the control system architecture.

Command and page design: Define commands from the terminal to the control system (operator action mode) and commands from the control system to the terminal (page call, LED display, etc.). Design all pages based on requirements, specifying their purpose, type, and data to be processed.

Dialogue table design: Based on the above analysis, determine all the words required for the dialogue table. It is recommended to complete it before writing the PLC program to avoid structural modifications.

Template and page creation: Use template pages to unify the interface style. Create application pages, alarm pages, help pages, and navigate through function keys or PLC variable configuration pages. Pages and fields can be protected with passwords (level A, B, C) to achieve hierarchical access control.

Alarm and Help Definition: Define the device that triggers the alarm, alarm grouping, priority, printing/recording/display/confirmation requirements. Create a help page and associate it with an application page or alarm page.

Translation and configuration: The application supports up to 3 language translations. Configure terminal parameters such as default startup page, date and time format, printer settings, etc.

Simulation, saving, and transmission: Use software simulation functions to test application logic, and then save the project. Transfer application programs and protocols to the terminal via serial port cable (XBT-Z915) or network (TXBT).

Terminal Operations and System Management

The terminal has three working modes: application transmission mode (communicating with XBT-L1000), operation mode (online control system), and confidentiality mode (accessing password protected functions and system pages).

Operators can access pages in various ways: by using function keys, page lists, directly entering page numbers, or by calling PLC commands. The input and modification of variable fields are completed through the keyboard or touch screen, and support instant writing (Shift+arrow keys) function. Alarm management is one of the core operations, which can be accessed through independent alarm keys (or touch icons) to confirm, filter by group, and print the alarm list.

The terminal configuration (such as time, language, screen parameters, printer, and communication line settings) can be directly modified through the system menu and saved in the PCMCIA card. The TXBT terminal also provides powerful variable adjustment function, which can directly read and modify multiple variable types in the connected PLC, and supports importing symbol files from PL7 or Concept for easy debugging by maintenance personnel.

Suggestions for Communication Optimization and System Integration

To ensure efficient human-machine dialogue response, it is necessary to optimize the communication between the terminal and PLC:

According to the frequency of variable usage, allocate cautiously to single, loop, or permanent reads.

Set the addresses of loop read variables on the same page to continuous.

Avoid including unnecessary words in the dialogue table.

Adjust the reading cycle of the conversation table based on the application and network load.

The communication performance of static function key commands is usually better than that of dynamic function keys. It is recommended to assign control functions to static keys and navigation and data input functions to dynamic keys.

Conclusion: Building a comprehensive platform for reliable industrial interfaces

The Magelis XBT-F/TXBT-F series graphical terminal and its XBT-L1000 development software together form a comprehensive, flexible, and robust industrial human-machine interface solution. From hardware selection, application structured design, implementation of secure communication mechanisms, to detailed development processes and operational specifications, this system is committed to building a clear, efficient, and secure human-machine dialogue bridge in complex industrial automation environments. By gaining a deep understanding of its architecture and principles, engineers can fully unleash its potential to achieve transparent monitoring, precise control, and efficient maintenance of the production process, thereby enhancing the overall system's availability and productivity.