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System Architecture

A typical Tsentry system architecture is shown in the following figure. All hardware employs industry-standard, open-architecture systems commercially available from multiple equipment suppliers. Communication is via industry-standard TCP/IP protocol over Ethernet. Graphical human-machine interface and maintenance support displays are implemented via standard Internet web pages. These pages are displayed using a standard web browser. Additional technical details concerning this architecture follow the diagram.

Tsentry System ArchitectureImage Modified


Basic Tsentry System Hardware and Software:

  • Standard IBM PC compatible computer (450MHz Pentium III or faster)

    • 320 MB memory / 13GB removable hard disk

    • APG and PCI bus slots

  • 19" color monitor

  • Graphics controller

  • Read/Write

  • Two (2) Ethernet communications adapters

  • Optional Process I/O controller and driver

  • Microsoft Windows 2000® operating system

  • VenturCom RTX real-time operating system extensions (optional)

  • Windows® Web services

  • TCP/IP Networking services

  • Microsoft Visual Studio® software development environment

Application Software Environment

  • Standard Windows® operation remains intact.

  • A library of real-time extensions for Windows® system is provided.

  • Three process task types are supported:

    • Standard Microsoft Windows® processes (Win32 Normal)

    • Standard Microsoft Windows® Real-Time processes (Win32 Real-Time)

    • VenturCom RTX Hard Real-Time processes (RTSS Real-Time)

  • VenturCom RTX® Hard Real-Time process attributes:

    • Strict priority-based CPU utilization

    • Processes run to completion before relinquishing CPU

    • True deterministic real-time process scheduling under Windows®

  • Hard Real-Time processes run at higher priority than all standard Windows® processes

  • System and application software developed using Microsoft Visual Studio tools

    • Visual C/C++

    • Visual Basic

  • All processes can be developed (code, edit, debug...) as standard Win32 processes on any PC with access to Microsoft Visual Studio.

  • Any process can be changed from one type (Win32 Normal, Win32 Real-Time, or RTSS Real-Time) to another with a simple re-build.

  • All process types can use the same library of application functions.

  • TelePro supplied C++ classes support many process control functions.

  • Application processes call Class Methods to execute control functions.

  • Application-specific code is developed in C/C++.

  • Complete facilities for developing custom applications are available to the end user.

Human-Machine Interface (HMI)

  • HMI displays are supported through standard Web pages.

  • Displays are developed using a combination of Visual Basic and Active Server Pages.

  • Complete facilities for developing and publishing custom HMI displays are available to the end user.

  • Standard interfaces implemented via Windows® web server environment.