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  1. 1. Use of HMI devices and SCADA systems By Dr. Palitha Dassanayake
  2. 2. Content  Operator Panels  SCADA systems
  3. 3. HMI devices HMI device (operator panel) Computer PLC Communication
  4. 4. Communicating with operator panels PLC Operator Panel Parallel connections Straight forward Each operator panel Output is connected to PLC input and vice versa The number of I/O increases
  5. 5. Operator Panel connected in parallel with a PLC S1 S2 S3 S4 S1, S2 etc are switches B1 B2 B3 B4 B5 B1, B2 etc are bulbs or indicators
  6. 6. Simple Example Entrance block PT1 PT2 Side block Stopping device Tile feeding Motor PR2 PR1Elevator Production line Auto Man T1 T2 IT2 T3 IT3 T4IPR1 IPR2 T5 IT5 T6 IS4 T7 IT7 IPT1 IPT2 Operator Panel
  7. 7. Limitations 1. You need additional input in the PLC for each operator switch 2. You need additional output in the PLC for each indicator 3. Operators has to remember the meaning of each indicator 4. All possible error messages will be limited to bulbs 5. It is difficult to arrange for the operator to insert numerical values Advantageous 1. Simple to use and construct as well as maintain 2. Less cost 3. No additional programming requirement as in serially connected ones 4. No requirement to match the PLC with the operator panel
  8. 8. Types of Controllers and Monitors CPU and I/O modules in built CPU and Operator panel in built Types of Operator panels Graphical User interface Text display only +key board Monitor + Key board Touch panels
  9. 9. Siemens COROS Operator Panel (Two Line text display)
  10. 10. Communicating with operator panels PLC Operator Panel Serial connection No additional I/O of PLC Required Operator panel has its own Software for communication Text only GUI interface
  11. 11. Programming an Operator Panel User friendly software are available. The programmer does not need to bother about data communication with the PLC. It is taken care of by the software Programmer needs to design the operator panel, text display graphical displays, error messages etc.
  12. 12. Programming Continued Stamp1 Stamp2 No. of Stamp1= input field No. of Stamp2= input field Current no. of Stamp1= output field Current no. of Stamp2= output field MB1 MB2 MB3 MB4
  13. 13. In the PLC program C1 MB1 UP R PV C2 MB2 UP R PV LD C1 T MB3 LD C2 T MB4
  14. 14. Ability to use more than one Display Screen 1 Press a function Key Or arrow key Screen 2
  15. 15. Example Sorting Table Left conveyor Right conveyor ms2 ms3 ms4 ms5 ms6 ms7 ms8 Light ms9 Left conveyor sorting table panel ms10 ms11 ms12 ms13 ms14 ms15 ms16 Light ms17 Right conveyor sorting table panel ps1 Ps2 Ps4 Ps3 is13 is14
  16. 16. After Sorting Table ps5 pb1 uv1 ps6 Stackers pxs1 (I 8.4) (I 9.2) (I 9.0) (I 10.2) (I 10.0)
  17. 17. Stacker 1Stacker 2Stacker 3Stacker 4Stacker 5 Pxs2 ps7ps8ps9ps10ps11 is4 is3 is2 is1is5 ps14 ps12 ps13 (I.5.0)(I.5.1)(I.5.2)(I.5.3) (I.5.4) (I.7.0)(I.7.1)(I.7.2)(I.7.3)(I.7.4) (I 1 (I.14.7) (I.14.0) (I.14.2)
  18. 18. Gripper pb4 pb5 is10 is8is9 is7is6 pb2 pb3 ps15 Is12 Is11 ms1 Pusher (I.14.4) (I.14.6) (I.13.3) (I 13.4) (I 13.5) (I 13.0) (I 13.1) & (I 13.2) (I 12.3) (I 12.2) (I 12.2) (I 12.1) (I 12.0) (I 12.4)
  19. 19. F5 F6 F7 F8F1 F2 F3 F4 F13 F14 F15 F16F9 F10 F11 F12 Date : 2006.07.10 Italy Stackers Condition Time:_._ Numbers changes with time Stacker Stack code Tile charge Enable Stacker Number to be setting : 0 Tile Number to be setting : 0 1 2 3 4 5 6 7 8 9 10 11 12 13 1 1 2 3 1 0 0 0 0 0 0 0 0 20 16 08 14 0 0 0 0 0 0 0 0 0 1 1 1 1 1 0 0 0 0 0 0 0 0 Function Key 2
  20. 20. F5 F6 F7 F8F1 F2 F3 F4 F13 F14 F15 F16F9 F10 F11 F12 Date : 2006.07.10 Italy Sorting Line Alarms Time:_._ SQ27 SQ28 SQ19 SQ44 SQ26 B1 SQ1 B2 SQ2 B3 SQ3 B4 SQ4 B5 SQ5 B6 SQ6 B7 SQ7 B8 SQ8 B9 SQ9 B10 SQ10 B11 SQ11 B12 SQ12 B23 B23 B19B20 SQ SQ23 Function F1
  21. 21. SCADA System Acronym for supervisory control and data acquisition, a computer system for gathering and analyzing real time data. SCADA systems are used to monitor and control a plant or equipment in industries such as telecommunications, water and waste control, energy, oil and gas refining and transportation. A SCADA system gathers information, such as where a leak on a pipeline has occurred, transfers the information back to a central site, alerting the home station that the leak has occurred, carrying out necessary analysis and control, such as determining if the leak is critical, and displaying the information in a logical and organized fashion. SCADA systems can be relatively simple, such as one that monitors environmental conditions of a small office building, or incredibly complex, such as a system that monitors all the activity in a nuclear power plant or the activity of a municipal water system. SCADA systems were first used in the 1960s.
  22. 22. SCADA system Supervisory Control and Data Acquisition System 1. Graphics You can visualize the system from the control room 2. SCADA Server Alarm detection and scaling function 3. Alarm/Events Real time processing with alarm and events 4. Multiple Trends
  23. 23. SCADA system contd. Supervisory Control and Data Acquisition System 5. Communication Serial, parallel TPC, IP based network 6. Reporting Alarm detection and scaling function 7. Interfaces Support for various interfaces, open protocol 8. Time synchronization
  24. 24. More facilities 1. Calculation facilities 2. Historical record and trend facilities 3. Connect with external interfaces 4. Connectivity Price of the software depends on Software points Facilities included End user license or development type
  25. 25. SCADA Architectures First Generation – Monolithic Computing was done in mainframes and network did not exist No connectivity to other systems Second Generation – Distributed The processing was distributed across multiple stations that are connected via LAN and share the information real time. Third Generation – Networked The current generations that used open system architectures, Open protocols, distributing connectivity across WAN
  26. 26. Complete system PLC CPU I/O Modules Sensor information Actuators and Motors Operator Panel Local Control Server Centrally controlled SCADA could be centrally controlled or/and locally controlled
  27. 27. Complete system Contd. PLC CPU I/O Modules Operator Panel Software For PLC programming Software for operator panel SCADA software (Open protocol available)
  28. 28. END