Invensys Releases ArchestrA™ Device Communications Toolkit
New Toolkit Facilitates Invensys and Third-Party DAServers to be Built on ArchestrA Technology

LAKE FOREST, Calif., Aug. 6, 2003 -- Invensys plc today announced the release of a groundbreaking new communications product called the ArchestrA™ DAS Toolkit. The ArchestrA DAS Toolkit is designed to make building Data Access Servers (DAS or DAServers) easier through the use of Invensys’ open ArchestrA software architecture.

Using this toolkit, Wonderware, other Invensys business units and third parties can build DAServers, which are next-generation plant communications interfaces built on ArchestrA technology. DAServers offer enhanced communication diagnostics and performance.

During the past six months, multiple Wonderware® DAServer products have been developed with this toolkit and are installed in several customer applications. Wonderware DAServers are designed to provide simultaneous connectivity between plant-floor devices and modern DDE, Wonderware SuiteLink™ and OPC® protocol-based client applications running under Microsoft Windows® 2000 and XP operating systems. The ArchestrA DAServer Toolkit will support other protocols as technology evolves and becomes available.

“DAServers are the perfect complement to Wonderware’s next-generation FactorySuite A²™ product line, which provides native OPC client functionality,” said Tim Black, device integration manager at Wonderware. “With Invensys' ArchestrA DAS Toolkit, Wonderware now offers even more powerful communication solutions for industrial automation applications.”

The modular architecture allows for the addition of new plug-ins with recompilation. The graphical user interface also is detached from the main protocol engine, enabling more detailed diagnostics, remote hot configuration and enhanced configuration files.

Version 1.0 of the ArchestrA DAS Toolkit features:

Enhanced diagnostic mapping capabilities
Modular architecture
Detached graphical user interface/remote configuration
Transaction support, including unsolicited messages
Multiple protocol capability
The generation of both a standard OPC server and advanced ArchestrA technology integration with a single development effort
The toolkit uses wizards to manage a majority of the programming involved in building servers. It also enables custom modifications to address a customer’s specific application requirements.

About Wonderware

Wonderware is a business unit of Invensys Systems, Inc. and is the world’s leading supplier of industrial automation software. Founded in 1987, Wonderware pioneered the use of the Microsoft Windows operating system in HMI automation software for manufacturing operation systems. Its mission is to power intelligent plant decisions in real time.

Based in Lake Forest, Calif., Wonderware has regional sales and development offices throughout North America, Europe, Latin America and Asia to provide support to its network of more than 160 distributor offices. Wonderware has approximately 300,000 software licenses in approximately 100,000 plants worldwide, which is about 30 percent of the world’s 335,000 plants with 20 or more employees.

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 (US$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, 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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Invensys, Wonderware, FactorySuite, FactorySuite A2, ArchestrA, APV, Avantis, Eurotherm, Foxboro, IMServ, SimSci-Esscor, Triconex, Westinghouse Rail, Dimetronic, Safetran, Burco, APV Baker, Hansen Transmissions, Lambda and Powerware are trademarks of Invensys plc, its subsidiaries and affiliated companies. All other brands may be trademarks of their respective owners.