1. Ref No. FBF-05-011 Copyright © Yokogawa Electric Corporation March, 2006 Yokogawa Electric Corporation Yokogawa’s Contribution for F OUNDATION Fieldbus March, 2006

2. Ref No. FBF-05-011 Copyright © Yokogawa Electric Corporation March, 2006 Yokogawa’s Contribution from The First Stage Yokogawa was one of the leading companies that developed F OUNDATION fieldbus technology. Yokogawa provided personnel for Board, Executive Committee, Technical Steering Committee, and Marketing Committee. Yokogawa worked very hard to establish the Fieldbus Foundation as the result of merger of ISP and World FIP/NA. Yokogawa provided fieldbus silicon chips. Yokogawa made various efforts to make Interoperability Test come to reality. Yokogawa provided personnel to complete the specification for capabilities file. Yokogawa donated personnel for years to Asia-Pacific branch of Fieldbus Foundation. Yokogawa led several field trails on behalf of Fieldbus Foundation. –Practical Use Test at CHUBU Electric Power Co., lnc., Japan

3. Ref No. FBF-05-011 Copyright © Yokogawa Electric Corporation March, 2006 Yokogawa’s Contribution Update Yokogawa continues to be at the leading edge in developing, manufacturing, and supporting products for F OUNDATION fieldbus expansion. Yokogawa provides personnel for Board, Executive Committee, Technical Steering Committee, and Marketing Committee. Yokogawa serves as the chairman of Fieldbus Foundation -Japan. Yokogawa has donated to various educational sites. –Fieldbus Foundation Scholarship Fund Associate Sponsor –ISP Demo Plant, USA (Lee College) –SAIT Polytechnic, Canada –Singapore Polytechnic –Institute Technology Bandung Indonesia –Industrial Open Network Laboratory, Japan (Waseda Univ.) –Yanshan Simulation Training Center (Sinopec Corp.), China... etc. Yokogawa continues to participate the Fieldbus Foundation Technical Activities. –Host Interoperability Support Test (HIST) –Interoperability Test Kit (ITK) –High Speed Ethernet (HSE) –Safety Instrumented Systems (SIS) –EDD Enhancement Cooperation Project (Fieldbus Foundation, HCF, PNO, OPCF)

4. Ref No. FBF-05-011 Copyright © Yokogawa Electric Corporation March, 2006 The First Is Yokogawa World’s first registered devices (EJA, YEWFLO). Yokogawa devices first to pass ITK 4.0 server interoperability test procedures. CENTUM System first to complete F OUNDATION fieldbus Host Interoperability Support Test (HIST). First with F OUNDATION fieldbus redundancy providing continuous operation. World’s first Windows 2000-based total production control system with F OUNDATION fieldbus support.

5. Ref No. FBF-05-011 Copyright © Yokogawa Electric Corporation March, 2006 Yokogawa Takes The Initiative in F OUNDATION Fieldbus in The Top Flight Board of Directors Executive Committee Yoshi Morioka President T. Sekiguchi General Assembly President Shuzou Kaihori ABB DuPont Emerson ExxonMobile Fuji Honeywell Invensys Rockwell Schneider Siemens YamatakeYOKOGAWA Administration Office Technical Steering Committee Marketing Committee Fieldbus Foundation -Japan Regional Marketing Committee Yoshi Morioka Technical Members K. Habaguchi (Physical Layer) K. Habaguchi (Physical Layer) Y. Saitou (Function Block) Y. Saitou (Function Block) T. Emori (Safety) T. Emori (Safety) M. Kimura (EDDL Enhancement) M. Kimura (EDDL Enhancement) Y. Nakamoto (HIST) Y. Nakamoto (HIST)

6. Ref No. FBF-05-011 Copyright © Yokogawa Electric Corporation March, 2006 Yokogawa Seizes The Initiative in F OUNDATION Fieldbus Worldwide Japan Yoshi Morioka Singapore Charles Cheong Indonesia Sudarto Ramli Amir Manurung Thailand Kitti Aussabumrungrat India A Dasgupta Europe Henk van der Bent Middle East Muraleedharan Nellikayil China Yasuki Tsukahara UK Simon Hatch Italy Roberto Secchi Belgium Daan Otter Hungary Nandor Hargita The Netherlands Nijs Vlot Germany Ralf Tormöhlen USA Dave Smith Regional Marketing Committee

7. Ref No. FBF-05-011 Copyright © Yokogawa Electric Corporation March, 2006 Yokogawa with F OUNDATION Fieldbus – 10 years! The Fieldbus Foundation celebrated its 10th anniversary at its 2004 General Assembly. Yoshi Morioka was honored by Fieldbus Foundation for his dedication of decade.

8. Ref No. FBF-05-011 Copyright © Yokogawa Electric Corporation March, 2006 The Greatest Yokogawa’s Contribution Yokogawa develops and provides truly useful F OUNDATION fieldbus solutions including systems, devices, asset management tool, etc. Yokogawa shows the usefulness of F OUNDATION fieldbus by implementing various actual projects all over the world. Retaining rich project experiences and specialist resources, Yokogawa, being recognized as the best F OUNDAION fieldbus solution provider, makes commitment to satisfy customer needs using the latest digital technology.