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

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Presentation on theme: "PLC Development 2010g Michael Kellow Kathleen Manuel James Kemp www.2010g.info."— Presentation transcript:

1 PLC Development 2010g Michael Kellow Kathleen Manuel James Kemp

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: 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

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

17 Future Goals 17

18 Questions


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