Plant Informatin Management System (Exaquantum)

Exaquantum is one of the most comprehensive Plant Information Management Systems (PIMS) available for process industries. Exaquantum can acquire data from all facets of a process and transform that data into easily usable, high-value, widely distributed information.

The data then becomes an integral part of the set of tools used by the business in vital decision-making processes.

Exaquantum R3.30 Released (March 2021)

Exaquantum R3.30 supports gathering alarm and event information from UACS (Unified Alarms and Conditions Server) that was released in CENTUM VP R6.07.10 as a new component. And Exaquantum R3.30 supports Windows Server 2019 and Office 2019 to be used in the customer’s new environment.

Click here for details on Windows 10 support information


Exaquantum Overview

Exaquantum is Yokogawa’s plant historian suite that provides a central database from which information can be extracted and presented to users throughout the organisation, enabling them to achieve safe, reliable and optimal plant operations. Exaquantum turns data into actionable information, enabling the smooth running and optimization of process operations.

  • Easy business-wide information distribution
  • Plant data is enhanced and used throughout the business
  • Data can be accessed from multiple Process Control Systems
  • Provision of long term plant history
  • Event-triggered processing of data into business information
  • Time-resolved event history
  • An integrated platform
  • Exaquantum runs on the MS Windows platform, using industry standard technologies
Exaquantum/Explorer in Design Time
Exaquantum/Explorer in Design Time
Exaquantum/Explorer in Run Time
Exaquantum/Explorer in Run Time


Exaquantum delivers a wide range of functionality suitable for many different production environments. The following list covers the major functional groups as a high level indication of the capabilities available:

  • Interfacing with plant data systems using industry standard OPC (including OPC UA)
  • Automatic database configuration and management, based on PCS configuration
  • Dynamic plant data hierarchy
  • Comprehensive job-directed and type-specific historization, archiving and aggregation of many data types
  • Extensive data management
  • Flexible scheduled and ad-hoc reporting including embedded Microsoft Excel, Word, Internet/entrant and other applications
  • Comprehensive trending facilities for real time and historical data
  • Data analysis ranging from standard calculations to complex user defined functions
  • User role dependent information display and security
  • Closing functions based on the plant's production calendar, including automatic and manual data correction
  • Statistical quality and process control
  • Powerful user interface available via thick client (Exaquantum/Explorer), web-enabled thin client (Exaquantum/Web) and an Excel add-in
  • Extensive information exchange with other applications (CSV, OLE DB and APIs')
  • Alarm and event handling
  • Automatic system administration and documentation
  • Exaquantum/Web allows users to connect to Exaquantum systems using Internet technology
  • Suitable for Apple and Windows Devices
    - 7 inches or Larger
    - Touch Friendly
    - Pinch and Zoom Gestures supported
    - Scalable Graphics
  • Exaquantum maximises the benefits of Microsoft Windows technology in a way that achieves the 'openness' and 'interoperability' that has for so long eluded the computing world
  • Automatic database equalisation ensures Exaquantum always reflects the current status of the plant
  • Historical database and real time database seamlessly provide comprehensive information about all aspects of the plant in real time or historical form
  • Business historian with optimised archiving and aggregation of raw and derived data ensures minimum use of storage media without loss of information
  • Closing calculations are performed according to user defined rules based on the following:
    • Plant production calendar for batch and continuous processes with authorised correction
    • Automatic recalculation (re-closing) and signing off for automatic inclusion in reports
Tag Viewer
Tag Viewer
  • Production calendar can accommodate any time period and supports daylight saving
  • Exaquantum provides an extremely powerful and flexible analysis and reporting facility. Drag & drop techniques enable comprehensive displays and reports to be created without programming. Displays can include dynamic graphics, trends, mimics, graphs, charts, spreadsheets, text, alarm & events, tabulated data and embedded objects. Simple scripting is available for users to create any number and complexity of calculations
  • OLE DB and API component technology provides extensive information exchange with other applications for inclusion in reports, distributing information etc. (e.g. Internet/entrant for sharing reports with remote sites, inclusion of CCTV or sound in displays, obtaining up to the minute commodity values)
  • Comprehensive trending facilities provide real time and historical, single or multi-trend groups. Historical trends will seamlessly span recent and archived data
  • Data quality embraces confidence and consistency ratings that are propagated throughout calculations


Management Summary Report
Management Summary Report

Exaquantum employs Microsoft Windows based client/server architecture with direct interfaces to plant data systems and business systems. This architecture enables applications from small single process installations to very large plant-wide systems. By integrating data from across a whole plant it is possible to serve many diverse users configured from the same basic components.



  • Enhanced, seamless information flow within and between plant systems and business applications
  • Automated instantaneous reporting
  • Integrated information from plant data and business systems
  • Aids Measurement of Key Performance Indicators (KPIs)
  • Automatic database configuration and updating
  • Rapid and simple implementation
  • Industry standard Microsoft Windows operating system

Exaquantum has a very clear business-directed focus to integrate data across an enterprise, delivering operational information to the whole business. Exaquantum provides industry with powerful plant information management, covering both business and process control domains. It eliminates the gap between business systems and process control by integrating information to meet complex business requirements.

Exaquantum provides the basis for Plant Information Management Systems (PIMS) and Manufacturing Execution Systems (MES) that delivers business benefits to users in the Hydrocarbons, Pulp & Paper, Power & Utilities, Chemicals, Pharmaceuticals, Food & Drink, Manufacturing and other continuous or batch processing industries. This is achieved by integrating data from all facets of the business, then transforming these into usable, high-value business information, which can be used as part of the enterprise's vital decision support tool set.

system architecute

Yokogawa's LIMS Data Exchange (Exaquantum/LDX) enables data from LIMS packages to be reported to Exaquantum users throughout the plant. LDX stores LIMS data supplied by LIMS packages (such as LabWare LIMS) into Exaquantum tags. Data is passed into Exaquantum tags whenever a test result is released by an authorised laboratory person. Quality data can then be combined with Process data providing much richer trends, reports and KPIs.


Exaquantum/VPN enables business systems to extract data from the process environment, without compromising security. Exaquantum/VPN provides a secure and controlled connection, typically through a firewall, initiated from an OPC server (running as a service) to the Exaquantum system (OPC client). Security is ensured by utilizing a VPN Protocol (for example, PPTP, L2TP over IPSec, or any other VPN protocol that may terminate on the Exaquantum Server) to provide an encrypted link.



Exaquantum Historical Data Manager allows Exaquantum to continually collect process data from an OPC HDA Server(s) into an Exaquantum Real-Time database. Normally data received from an OPC HDA server is stored directly into the Exaquantum Historical Database. By storing the data into the Real-Time database, graphical screens, calculations and aggregations will be updated.



1.1 Introduction

Exaquantum/FDM reads CSV formatted files containing process data from a specified File folder(s) and then transfers the data into the Exaquantum Historian.

1.2 Capabilities

The Read Interval at which Exaquantum/FDM checks each file folder for the presence of new files is configurable. On each folder access, all CSV files present in the folder are processed up to a configured maximum number of files for that Read Interval. Files continue to be processed at each successive Read Interval until no further files remain in the File folder.

After processing in file creation order, files with no errors are moved to a specified Archive files folder while files which cause errors during the read are moved to a specified Error files folder. The maximum number of files kept in each folder may be specified to prevent unlimited use of disk space.

File names written to a File folder must be unique. If a file with the same name already exists in the Error or Archive files folder then the newly-processed file is simply deleted. If an error occurs while moving a file to the Archive or Error files folder an error is logged and the file is deleted. During file processing the status (success or error) of the processing is logged to the Windows Event log.

1.3 CSV File Format

The information provided for each row in each CSV file is:

  1. Tag Name (Mandatory). This is the Exaquantum Tag (data point) name.
  2. Value (Mandatory). This is the Tag value.
  3. Quality (Optional). If present, the Quality will be stored with the Tag Value. The Quality definitions are configurable for instance Good Quality = 1 or Good Quality = "Good".
  4. Timestamp (Optional). A Timestamp for the Tag Value can be entered otherwise the current time when the CSV file is read will be used. The timestamp format is configurable for instance 'ddMMyyyy HHmm' or 'ddMMyyyy HH:mm:ss'.

The following is an example of a CSV file containing two rows.

704F000101.PV,15042013 1400,56.1,1
704F000102.SV,15042013 1400,55,0
704F000103.MODE,15042013 1400,"This is a text string",1

Column 1 = Tag Name
Column 2 = Data time stamp using the format 'ddMMyyyy HHmm'
Column 3 = Data Value
Column 4 = Data Quality (0 = Bad Quality, 1 = Good Quality, 2 = Uncertain Quality)

Emails can be sent from Exaquantum

  • From filtered Alarms & Events
  • From an Exaquantum Calculated Tag
  • At the end of each Exaquantum Tag Aggregation period

An email can be sent to one or more email addresses

Alarm & Events

Every Alarm & Event received by Exaquantum can have one or more filters configured for one or more fields resulting in an email being sent if a match occurs

Tight integration with CS 3000 & CENTUM VP alarms

  • System Alarms (e.g. hardware issue)
  • Process Alarm (e.g. HIHI)
  • Operation Guide
  • Mode/Status Change (e.g. device MANUAL to AUTO)
  • Engineering Maintenance
  • Operation Record
  • Special order Message

Alarms & Events received from Non-Yokogawa DCSs, ESDs, etc. are also supported

Calculated Tags

Exaquantum Calculated tags can contain programming to send an email based on one or more tag values, such as:

  • Outside an operating range
  • Production goal achieved

Calculated Tags

The Problem

The ability to create a common graphical screen hierarchy and run-time features accessible by all users, such as linked trend groups and report selections, is time consuming, inefficient and difficult to manage.

The Solution

The Exaquantum/GF (GUI Framework) for Exaquantum provides common user access facilities across all Exaquantum/Explorer screens. These screens can be accessed by supervisors and managers needing to view the plant's processes. Screen interrelationships and linked features such as access to screen specific Microsoft Excel reports and trends provide in-depth access to key information. Screens are grouped within plant hierarchies.

Key Features

The screen plant hierarchy is easy to configure and maintain

  • Replay past plant incidents by using the History Replay facility within the currently displayed screen
  • User access to pre-configured trends assigned to the currently displayed screen
  • Each user can configure up to 16 personal trends accessible at any time from any Exaquantum/Explorer enabled PC
  • User access to pre-configured Microsoft Excel reports assigned to the currently displayed screen
  • Navigate directly to any graphic by selecting the required graphic from the hierarchal graphic list
  • User efficiency is increased by being able to rapidly move between display screens via navigation buttons
  • Drag & drop process data from the displayed screen and/or the Exaquantum Data Selector onto an always-on- top trend screen
  • Ability to search for specific screens
  • Ability to print the currently displayed screen

Exaquantum/GF Gas Fields



The Problem

Plant personnel often require detailed analysis of data collected by their Exaquantum Historian to identify problems, reduce plant maintenance, improve production, etc.

The Solution

Exaquantum/RM (Report Manager) provides authorized users with the ability to create scheduled Microsoft Excel reports using Exaquantum Historian data. Reports can be emailed to one or more people, printed and/or stored.

Key Features

  • Flexible, easy to use interface
  • The full power of Microsoft Excel enhanced with the Report Manager Excel add-in
  • A report can be linked to multiple schedules
  • Unattended report creation into a defined folder
  • Automated printing of reports
  • Automated emailing of reports
  • Report templates can be grouped within folders to provide flexible management
  • Each report can be formatted as an Excel spreadsheet(s), PDF document and/or XPS document

Exaquantum/RM Production Reports

Windows 10 Semi-Annual Channel Version support

The operation has already confirmed by the following version.

Windows 10 Enterprise
Version 1803 1809 1903 1909 2004 20H2 21H1
End of Service by Microsoft May 11, 2021 May 11, 2021 Dec. 8, 2020 May 10, 2022 Dec. 14, 2021 May 9, 2023 Dec. 13, 2022
Exaquantum Revision 3.20 (*1) (*1) (*1) OK (*2) OK (*2) OK (*2) N/A(*3)
Exaquantum Revision 3.30 N/A N/A N/A OK (*2) OK (*2) OK (*2) OK (*2)

OK: Available, N/A: Not Available
(*1) Support ended with end of support by Microsoft
(*2) Only Exaquantum Client can be installed
(*3) Upgrading to Exaquantum Revision 3.30 is required

Windows 10 Pro
Version 1803 1809 1903 1909 2004 20H2 21H1
End of Service by Microsoft Nov. 12, 2019 Nov. 10, 2020 Dec. 8 2020 May 11, 2021 Dec. 14, 2021  May 10, 2022 Dec. 13, 2022
Exaquantum Revision 3.20 (*1) (*1) (*1) (*1) OK (*2) OK (*2) N/A(*3)
Exaquantum Revision 3.30 N/A N/A N/A (*1) OK (*2) OK (*2) OK (*2)

OK: Available, N/A: Not Available
(*1) Support ended with end of support by Microsoft
(*2) Only Exaquantum Client can be installed
(*3) Upgrading to Exaquantum Revision 3.30 is required

Microsoft 365 support

The operation has already confirmed by the following version. 

Microsoft 365
Version 2008 2102 2108
Exaquantum Revision 3.30 OK OK OK

Updated : Oct. 26, 2021


  • Yokogawa supplied an integrated boiler and turbine control, monitoring and protection system for each of the four generating units in a coal-fired power plant in Australia.
  • Yokogawa also delivered two high fidelity operator training simulators for this plant.
  • Highlyadvanced biopharmaceutical plant uses CENTUM, VP Batch, Exaquantum and PRM.
  • Total system integration for large-scale biotech production facility.
  • Rapid Implementation of Integrated CENTUM CS 3000 and ProSafe-RS.
  • The highly reliable CENTUM CS 3000 system has also helped TOL maintain high productivity at this plant.
  • CENTUM CS 3000 and Exaquantum PIMS improve production efficiency at Chinese synthetic rubber plant.
  • Exaquantum provides data on long-term trends needed to make improvements to plant processes.
  • Yokogawa's CENTUM CS 3000 DCS Monitors and Controls Operations at Poultry Litter-to-energy Plant
  • The boiler and turbine startup procedures reduces operator workload and helps to ensure a smooth and safe startup
  • Yokogawa's integrated solutions control FGD processes at Romania's largest power plant
  • SO2 and dust emissions are controlled within the EU environmental standards
  • At the company's Ulsan resin plant, six Exaquantum servers were connected to CENTUM CS 3000 and other vendor's systems.
  • KKPC needed to expand its SBC capabilities and improve production efficiency at its plants.
  • Installation of Exaquantum PIMS package improves efficiency of process data management.
  • Improve quality and yield through proactive maintenance of plant assets.
  • CENTUM CS 3000 plays key role in Malaysian waste oil to diesel project.
  • Yokogawa proposed to provide its systems and services as the main instrument vendor.
  • CENTUM CS 3000 replaces legacy system at Paris's largest waste to energy plant
  • Exaquantum is used to calculate plant performance and generate the reports needed to optimize operations and demonstrate regulatory compliance
  • Exaquantum Achieves $2 Million in Annual Savings for CENIBRA Pulp & Paper Plant.
  • Following an upgrade to the CENTUM CS 3000 Production Control System, leading pulp and paper supplier CENIBRA saw the potential for further savings and efficiencies through tighter control of the production process.

Eraring Power Station, located just north of Sydney, is one of the largest power stations in Australia, comprising four 660MW coal-fired units. The power station has operated reliably since 1981. To ensure continued reliability for the next few decades, Eraring Energy, the owner of the power plant, decided to replace the original hard-wired control equipment with a modern integrated control and monitoring system (ICMS).

  • Innovative GEOLIDE waste water treatment complex in Marseille uses CENTUM and Exaquantum. 
  • The visualization of all data on items such as motor and pump operating time and chemical consumption amount allows operators to optimize key operation items.
  • Easy-to-use report system
  • Electric power demand monitoring screen with enhanced real-time capability
  • Monitoring screens for estimated free calcium oxide content
  • Automatic production control ranging from schedule to instructions, current status display, actual data collection, and report output
  • Yokogawa provides CENTUM CS 3000 and ProSafe-RS for the largest LNG terminal in Europe.
  • Yokogawa's OmegaLand plant operator training simulator (OTS) helps to reduce costs, optimize LNG terminal processes.
  • Yokogawa provides CENTUM CS 3000, Exaquantum and PRM solutions for China's largest refinery/petrochemical complex.
  • Process data management by Exaquantum is a key issue in the petrochemical complex.
  • Yokogawa receives award for hot cutover of BP Sharjah plant DCS.
  • Yokogawa was selected by BP as main automation contractor (MAC) for a project to replace the Sharjah plant's existing legacy DCS with Yokogawa CENTUM VP.
  • Yokogawa's CENTUM VP and PRM improve efficiency at new nylon plant in Thailand.
  • At the plant startup stage, PRM was used together with FieldMate to thoroughly check all loops.

Rousselot Ghent won Belgium Factory of the Future Award. Yokogawa has supported Rousselot with automation systems since 1993.

Data of 20,000 tags gathered by Exaquantum helped to find the ideal production parameters.

Yokogawa Technical Report

Improved plant operation efficiency and reduced maintenance costs based on appropriate predictive maintenance are the common objectives that need to be achieved in every manufacturing domain. Exaquantum is positioned above the Process Control System (PCS) layer and gathers and stores huge volumes of process and laboratory data over long terms.


Modern historians do much more than just store process data. They also provide analysis, reports, and valuable operational and business information.


ARC believes that by implementing procedural automation, many process plants can minimize variability to help ensure smooth, efficient, and safe state transitions.



Looking for more information on our people, technology and solutions?

Contact Us