SCADA

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  • <number>
    (page is self describing while it is updating)
    Special: Data server for fieldbus integration
    Several drivers for many fieldbuses available
  • SCADA

    1. 1. SCADA by Prasad Mane (05IT6012) School of Information Technology
    2. 2. Mar 30, 2015 SCADA 2 Contents..  Introduction  Hardware Architecture  Software Architecture  Functionality  Conclusion  References
    3. 3. Mar 30, 2015 SCADA 3 Introduction  What is SCADA?  What is data acquisition?  Where and why, use of SCADA? Application area :  Industrial processes : chemical, power generation and distribution, metallurgy, …  Nuclear processes : reactors, nuclear waste, ...  Experimental physics : HEP laboratories  Application size:  20 k I/O to 450 K I/O,  1 M I/O under development
    4. 4. Mar 30, 2015 SCADA 4 Data Server SCADA ? Supervisory Control And Data Acquisition Graphics and Batch processing Archiving, Logging, Access Control, Alarms Distributed database PLC’s Field Bus Data Server Control Programs ERP Systems Expert Systems
    5. 5. Mar 30, 2015 SCADA 5 Architecture  Hardware  Software
    6. 6. Mar 30, 2015 SCADA 6 Hardware Typical Hardware Architecture
    7. 7. Mar 30, 2015 SCADA 7 Software Architecture
    8. 8. Mar 30, 2015 SCADA 8 Software Architecture  Communication Internal Communication Access to Devices  Interfacing H/W  Multiple communication protocols supported in a single system  Support for major PLCs/DCSs but not VME S/W  API  ODBC, DDE and OLE I/F to PC Products  OPC Client and OPC Server  ActiveX Containers  Scalability  Database Configuration DB, alarm DB, Archive DB, log DB and RTDB resides in the memory of the servers
    9. 9. Mar 30, 2015 SCADA 9 Functionality  Generic SCADA functionality  Access Control,  MMI,  Trending,  Alarm Handling,  Logging, Archiving,  Report Generation,  Automation.
    10. 10. Mar 30, 2015 SCADA 10 Functionality Contd..  Access Control Users - allocated to groups group - defined read/write access  MMI multiple screens library of standard graphical symbols dragged and dropped zooming, re-sizing, scrolling... Links - pages to navigate
    11. 11. Mar 30, 2015 SCADA 11 Functionality Contd..  Trending based on parameters on specific chart can be predefined or defined on-line more than 8 trended parameters per chart both real-time and historical trending zooming and scrolling  Alarm Handling based on limit and status checking handled centrally E-mails can be generated
    12. 12. Mar 30, 2015 SCADA 12 Functionality Contd..  Logging, Archiving  Data stored in compressed and proprietary format  Logging / Archiving either for a set number of parameters or for a set period of time  Logging / Archiving can be frequency or event driven *  Logging of user actions together with a user ID  VCR facility for playback of stored data  Writing logs into RTDB  Report Generation  Reports created using SQL type queries to the RTDB or logs  Automatic generation, printing and archiving of reports  Use of ‘components’ for report generation
    13. 13. Mar 30, 2015 SCADA 13 Functionality Contd..  Automation triggered by events defined in scripting languages send e-mail ,write into RTDB recipes Sequencing
    14. 14. Mar 30, 2015 SCADA 14 Development Tools  Project editor  Graphics editor  Configuration through parameter templates  Scripting language  Driver Development Tool Kit  And more…
    15. 15. Mar 30, 2015 SCADA 15 Data Access Mechanism's  Alarm Server typically poll data from the data server ( -> impact on network bandwidth) More advanced techniques like publish / subscribe are available in some cases  Data from field buses are mainly polled Field Bus Data Server Alarm Server Polling Polling
    16. 16. Mar 30, 2015 SCADA 16 Conclusion SCADA is a control system with •More frond end functionality •More interfaces and efficient storage •More record or device oriented configuration •but System wide configuration tools are needed •are less expensive than DCS, but offer different functionality than DCS •And finally various applications
    17. 17. Mar 30, 2015 SCADA 17 References 1. www.scadanews.com 2. www.princeton-indiana.com/wastewater/pages/scada/scada-overview.h 3. www.ref.web.cern.ch/ref/CERN/CNL/2002/003/scada/ 4. www.sss-mag.com/scada.html 5. www.scada.com

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