1. SCADA

2. 3-Oct-15 Contents.. Introduction Hardware Architecture Software Architecture Functionality Conclusion References

3. 3-Oct-15 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. 3-Oct-15 Data Server SCADA ? S upervisory C ontrol A nd D ata A cquisition Graphics and Batch processing Archiving, Logging, Access Control, Alarms Distributed database PLC’s Field Bus Data Server Control Programs ERP Systems Expert Systems

5. 3-Oct-15 Architecture Hardware Software

6. 3-Oct-15 Hardware Typical Hardware Architecture

7. 3-Oct-15 Software Architecture

8. 3-Oct-15 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. 3-Oct-15 Functionality Generic SCADA functionality Access Control, MMI, Trending, Alarm Handling, Logging, Archiving, Report Generation, Automation.

10. 3-Oct-15 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. 3-Oct-15 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. 3-Oct-15 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. 3-Oct-15 Functionality Contd.. Automation triggered by events defined in scripting languages send e-mail,write into RTDB recipes Sequencing

14. 3-Oct-15 Development Tools Project editor Graphics editor Configuration through parameter templates Scripting language Driver Development Tool Kit And more…

15. 3-Oct-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

16. 3-Oct-15 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. 3-Oct-15 References 1. www.scadanews.com 2. www.princeton-indiana.com/wastewater/pages/scada/scada- overview.html www.princeton-indiana.com/wastewater/pages/scada/scada- overview.html 3. www.ref.web.cern.ch/ref/CERN/CNL/2002/003/scada/ www.ref.web.cern.ch/ref/CERN/CNL/2002/003/scada/ 4. www.sss-mag.com/scada.html 5. www.scada.com www.scada.com