1. Yokogawa Electric Corporation Copyright © Yokogawa Electric Corporation Brief Introduction of ABB Industrial IT System 800xA 2004 March

2. Copyright © Yokogawa Electric Corporation Confidential Page.2 This Document explain briefly ABB Control System.

3. Copyright © Yokogawa Electric Corporation Confidential Page.3 Market Shares of the PAS Suppliers, 2001

4. Copyright © Yokogawa Electric Corporation Confidential Page.4 Market Shares of the PAS Suppliers, 2003 Down

5. Copyright © Yokogawa Electric Corporation Confidential Page.5 0% 20% 40% 60% 80% 100% -20% -40% -60% -80% -100% EmersonHoneywellInvensysABBYokogawa Debt/Equity Ratio Equity Ratio Debt/Equity Ratio and Equity Ratio Total Debt to Shareholder's Equity Equity Ratio 79% 58% 39% 486% 2446% 40 % 38% 2% 6% 48% As of end of fiscal 2001 Source: IR data and annual reports Financial Stability

6. Copyright © Yokogawa Electric Corporation Confidential Page.6 R&D Ratio in the Industry 1996 2001 InvensysHoneywell Emerson ABB Yokogawa Source: IR data and annual reports R&D Investment

7. Copyright © Yokogawa Electric Corporation Confidential Page.7 ABB Company History Asea BBC ABB (Asea Brown Bovefi Ltd) Acquired 1998.6 Freelace200 INFI90 Symphony Advant OCS Industrial IT 19801985199020001995 Kent Taylor BBC-Kent Acquired ABB-Kent-Taylor Alfa Laval Acquired August AEG Hartmann & Braun Deinvest Mannesmann Hartmann & Braun Bailey Elsag Fischer & Porter Acquired Elsag-Bailey DCI Melody MOD300 Master System

8. Copyright © Yokogawa Electric Corporation Confidential Page.8 ABB PAS Products History Master System 1980 Advant OCS Industrial IT 19801985199020001995 MOD300 DCI-4000 DCI-5000 Symphony DCI DCI System Six Melody Network90INFI90 INFI90 Open Symphnoy Harmony Industrial IT System 800xA 2005 1984 1992 Symphnoy Melody Freelance 2000 2004 1980 1979 1988 19851992 1994 1997 SC Controller TRIO 1988 Migration Symphony

9. Copyright © Yokogawa Electric Corporation Confidential Page.9 ABB Product Advant OCS Advant Power Freelance 2000 General Purpose Interface Procontrol P SattLine Harmony Symphony Industrial IT Family Digital Control System for Power Plant Open Control System Open Control System for Power Plant PLC Interface Support for INFI90 and Symphony Melody Hartman&Braun Elsag Bailey ABB ABB Main Products for PAS Industrial IT System 800xA DCI

10. Copyright © Yokogawa Electric Corporation Confidential Page.10 Advant OCS (Open Control System)

11. Copyright © Yokogawa Electric Corporation Confidential Page.11 Advant OCS Hardware Controller –Advant Controller 55 –Advant Controller 70 –Advant Controller 110 –Advant Controller 160 –Advant Controller 250 –Advant Controller 410 –Advant Controller 450 –Advant Controller 460 –Advant Controller 800 –Advant Station 100 –Advant Station 500 –Advant Fieldbus AF100 I/O –S100 Series –S400 Series –S600 Series –S800 Series HMI –Advant Engineering Workplace –Advant Operator Workplace –Advant Enterprise Historian Industrial IT uses S800 I/O UNIX

12. Copyright © Yokogawa Electric Corporation Confidential Page.12 Symphony Harmony DCI

13. Copyright © Yokogawa Electric Corporation Confidential Page.13 Symphony Hardware Controller –Melody –Harmony –DCI I/O –Melody I/O –Melody S800 for Remote –Melody S900 for Remote –Harmony Block I/O –Harmony Rack I/O HMI –Maestro –Conductor Engineering –Composer UNIX Hartmann & Braun Contronic Series, Elsag Bailey INFI 90 OPEN DCI SYSTEM SIX®. Hartmann & Braun Contronic Series, Elsag Bailey INFI 90 OPEN DCI SYSTEM SIX®. Industrial IT uses S800 and S900

14. Copyright © Yokogawa Electric Corporation Confidential Page.14 Symphony-Melody For maximum compatibility with the Hartmann & Braun Contronic Series, SYMPHONY connects the Melody Series of control and I/O products

15. Copyright © Yokogawa Electric Corporation Confidential Page.15 Symphony-Harmony The Harmony Series products are backward compatible with Elsag Bailey INFI 90 OPEN and DCI SYSTEM SIX®. Harmony Bridge Controller

16. Copyright © Yokogawa Electric Corporation Confidential Page.16 Freelance 2000 Current Version 6.2

17. Copyright © Yokogawa Electric Corporation Confidential Page.17 Freelance 2000 Hardware Controller –Process Station –Field Controller AC800F HMI –Operator Station DigiVIs –Engineering Station DigiTool Industrial IT uses AC800F

18. Copyright © Yokogawa Electric Corporation Confidential Page.18 Industrial IT Improved Information Integration Unmatched Scalability Broadest Scope of Supply Maximum Engineering Efficiency Plant and Asset Optimization Field Instrument Integration Business Systems Integration Optimize IT Operate IT Engineer IT Control IT DataInformation Knowledge Inform IT

19. Copyright © Yokogawa Electric Corporation Confidential Page.19 Industrial IT Hardware Controller (Control IT) –AC 800F (Hybrid System) –AC 800M (Scalable PLC) –AC 800C (Mini PLC) –Freelance Rack I/O –S200 Series –S800 Series Universal Process I/O –S900 Series Intrinsic Safe I/O HMI –Operate IT Process Portal Engineering –Engineering IT Engineering Studio Control Builder –AC800F/M/C –FF Graphic Builder Fieldbus Builder for Profi

20. Copyright © Yokogawa Electric Corporation Confidential Page.20 Supporting the major international fieldbus standards and HART Supporting the major international fieldbus standards and HART Industrial IT System Structure Engineer IT Operate IT / Produce IT Inform IT Control IT FF-H1 PB-PA PB-DP

21. Copyright © Yokogawa Electric Corporation Confidential Page.21 FDT/DTM Architecture HART F ield D evice T ool D evice T ype M anagers HART Control Builder The FF is currently evaluating that concept.

22. Copyright © Yokogawa Electric Corporation Confidential Page.22 Engineer IT Suite Composed of the following products: –Engineering Studio – Basic set of Engineering Efficiency tools. –Control Builders - System dependent tools for control configuration –Graphics Builders – HSI configuration tools

23. Copyright © Yokogawa Electric Corporation Confidential Page.23 Engineer IT A s p e c t O b j e c t s ™ P l a n t E x p l o r e r Aspect Data Sheet Document Manager Parameter Manager Bulk Data Manager Engineering Studio Control Builder Graphic Builder

24. Copyright © Yokogawa Electric Corporation Confidential Page.24 Optimize IT - Plant Optimization Optimize IT Asset Lifecycle and Capacity Optimization  Asset Optimization  Maintenance Triggers  CMMS Interface  Audit Assistant  Documentation Organizer  Process Optimization  Dynamic Data Reconciliation  3dMPC  LATTS Loop Auditing Tools  Dynamic Optimization  Overall Equipment Effectiveness  SCOOPE

25. Copyright © Yokogawa Electric Corporation Confidential Page.25 Maintenance Trigger Maintenance Order Management Process data Asset conditions Maintenance Work Order request Fault Report Maintenance Condition alarm/event Optimize IT- Asset Optimization Condition Monitors Data Server Data Server CMMS Data Server Data Server Data Server Data Server Condition-based Maintenance (Maintenance Triggers ) Operator Notice Web

26. Copyright © Yokogawa Electric Corporation Confidential Page.26 Industrial IT System 800xA Hardware Controller (Control IT) –AC 800M (Scalable PLC) I/O –S800 Series Universal Process I/O –S900 Series Intrinsic Safe I/O HMI –Operate IT Process Portal Engineering –Engineering IT Engineering Studio Control Builder –AC800M –FF Graphic Builder Fieldbus Builder for Profi

27. Copyright © Yokogawa Electric Corporation Confidential Page.27 Industrial IT Strength ABB is very strong European roots Installed system number Support of multiple Fieldbus technologies –Profibus/FF?/CAN/Modbus FDT/DTM Technologies Asset Optimization

28. Copyright © Yokogawa Electric Corporation Confidential Page.28 Industrial IT Weakness 1 Controller Redundant Configuration Multiple Engineering Tools for various ABB components Foundation Fieldbus Do not have efficient engineering support tool Complicated Start up engineering for Controller Poor Simulation function Poor Engineering data back up and Controller data upload function

29. Copyright © Yokogawa Electric Corporation Confidential Page.29 Industrial IT Weakness 2 Engineering capability Not Clear Roadmap for System Product Poor migation Solution