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. PLC Industries 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. PLC Range 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 PLC Development Communications Protocol SoftwareHardware 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 Image taken from: www.rtaautomation.com/modbustcp 11

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

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

14. Ladder Logic [ I 2 AND NOT (O 3 ) ] OR [ O 3 AND NOT (I 2 ) ] = Output 2 14

15. Programming RS Logix 500 15

16. Hardware Enclosure Processor Module Communications Modules Expansion and I/O Modules Power Supply 16

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

18. Questions