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PLC Development 2010g

PLC Development 2010g. Michael Kellow Kathleen Manuel James Kemp. www.2010g.info. Overview. Description Scope Current Progress Communication Software Hardware Future Plans. 2. PLC’s Control the World. 3. PLC Industries. Water & Waste Treatment

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PLC Development 2010g

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  1. PLC Development 2010g Michael Kellow Kathleen Manuel James Kemp www.2010g.info

  2. Overview • Description • Scope • Current Progress • Communication • Software • Hardware • Future Plans 2

  3. PLC’s Control the World 3

  4. PLCIndustries • Water & Waste Treatment • Electricity Generation and Distribution • Mining • Manufacturing • Pharmaceuticals • Golf Clubs 4

  5. What makes a PLC Programmable Logic Controller • Simple Logic Controller • Reliable • Extendable • Versatile 5

  6. PLC vs PC or Micro • Less Errors in Programming • High Reliability • Compatibility with Hardware and Instuments 6

  7. PLCRange 16 Major PLC Manufacturers Many Smaller Manufacturers Not Compatible with each other 7

  8. Scope Research, develop and construct an industry standard PLC (programmable logic controller) for teaching purposes. 8

  9. Current Progress 9

  10. Communications Protocol Some of the factors that will help determine which type of protocol to use: • cost • redundancy • speed • repeatability • maintainability 10

  11. Communications Protocol Modbus • Developed by Modicon • Standard communications protocol in industry • Widespread use of Modbus in industry mainly due to: • Cost • Maintainability 11 Image taken from: www.rtaautomation.com/modbustcp

  12. Communications Protocol Ethernet/IP • Developed by Rockwell Automation (Allen-Bradley) • Designed for use in process control and other automation applications 12 Image taken from: ethernetgateways.com

  13. Current Progress Software • Kernel Design • SLC 500 Commands • Closed Source • PID Control • Ladder Logic Interpreter 13

  14. LadderLogic [ I2 AND NOT (O3) ] OR [ O3 AND NOT (I2) ] = Output 2 14

  15. Programming RS Logix 500 15

  16. Hardware 16

  17. Future Goals 17 http://www.wastechcontrols.com/images/plc.jpg

  18. Questions

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