Software creates and validates complex control applications.

Press Release Summary:



Tristation(TM) 1131 Developer's Workbench v4 enables engineers to create and edit programs and control function blocks for Tricon(TM) and Trident(TM) Triple Modular Redundant (TMR) controllers. Graphical user interface is organized with Windows® folder tabs, while project navigation tree feature aids users in moving within project. Product enables direct access to tag names by control program and includes find function to locate any element and its dependencies within project.



Original Press Release:



Triconex Business Unit Releases New Tristation Developer's Workbench



Version Features Significant Enhancements for Wide Array of Process Industry Applications

IRVINE, Calif., Aug. 27, 2003 -- Triconex, an operating unit of Invensys plc, today announced the release of a new version of the Tristation(TM) 1131 Developer's Workbench. Tristation 1131 enables engineers to efficiently create and edit programs and control function blocks for Tricon(TM) and Trident(TM) Triple Modular Redundant (TMR) controllers. Triconex(R) TMR controllers are the benchmark for safety and critical control applications in process industries such as refining and petrochemical plants.

One of the most common applications for Triconex controllers is in the safety-instrumented system (SIS) of a petrochemical plant. TMR controllers can be used by process plants to protect human life, the environment and plant assets. Triconex systems are also used for burner management systems and integrated turbine-compressor control as well as integrated turbine-generator control. In other instances, Triconex controllers are implemented for fire and gas protection.

Version 4 offers a significantly improved graphical user interface, organized with familiar Windows(R) folder tabs such as applications, configurations and projects. Users will find the new project navigation tree feature to be especially helpful for moving quickly within a project.

Version 4 also enables direct access to tag names by a control program and includes an efficient "find" function to quickly locate any element and its dependencies within a project. An optional Cause and Effect Matrix Programming Language (CEMPLE) editor is available. Version 4 also includes an automatic upgrade feature for projects configured with any earlier version of Tristation 1131.

"Over the years, our customers have created many thousands of control applications using Tristation software," said Tracey Sledge, Triconex vice president and general manager. "The need to create and validate complex control applications quickly has never been greater. Version 4 is our response to that need, and it is by far the most significant upgrade ever to the Tristation toolset."

A free demonstration version is available for evaluation purposes. Visit www.triconex.com/v4 for more information.

About Triconex

Triconex, an operating unit of Invensys plc, is a global leader in the supply of products, systems and services for safety, critical control and turbomachinery applications. Since its inception in 1983, the company has installed thousands of control systems solutions in a wide variety of industries and applications worldwide. Triconex products are based on patented Triple Modular Redundancy (TMR) industrial safety-shutdown technology. Today, Triconex TMR products operate globally in more than 5,000 installations. According to industry research firm ARC Advisory Group, this makes Triconex the largest TMR supplier in the world. For more information, visit the Triconex Web site at www.triconex.com.

About Invensys

Invensys is a global leader in production technology. The group helps customers improve productivity, performance, and profitability using innovative services and technologies and a deep understanding of their industries and applications.

Invensys Production Management works closely with customers to increase performance of production assets, maximize return on investment in production and data management technologies and remove cost and cash from the supply chain. The division includes APV, Avantis, Eurotherm, Foxboro, IMServ, SimSci-Esscor, Triconex, and Wonderware. These businesses address process and batch industries -- including oil and gas, chemicals, power and utilities, food and beverage, and personal health care -- and the discrete and hybrid manufacturing sectors.

Invensys Rail Systems is a global leader in the design, manufacture, supply, installation, commissioning and maintenance of safety related rail signaling and control systems as well as a complete range of rail signaling and communications products. The business includes Westinghouse Rail Systems Limited (WRSL), Dimetronic Signals, Safetran Systems, Burco Services, Westinghouse Signals Australia, and Foxboro Transportation. WRSL was recently awarded two contracts valued at more than 850 million pounds (U.S. $1.3 billion) for the renewal of signaling on the London Underground.

Invensys also currently serves other market sectors through its Development Division. The businesses in this division are: Appliance Controls, APV Baker, Baan, Climate Controls, Hansen Transmissions, Lambda, Metering Systems and Powerware. Invensys is actively seeking to develop these businesses through equity partners or new owners.

Invensys operates in more than 60 countries, with its headquarters in London. For more information, visit www.invensys.com.

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