programable logic control using ladder logic
- 1. VISVESVARAYA TECHNOLOGICAL UNIVERSITY BELAGAVI, KARNATAKA – 590018 Presentation on “PLC PROGRAMMING USING LADDER LOGIC” Presented By: GOWTHAM K 4HG21EC406 Under The Guidance Of: Prof. Gurubasavanna M G Assistant Professor Department of Electronics and Communication Engineering Government Engineering College Mosalehosahalli - 573212
- 2. “ ” PROGRAMMABLE LOGIC CONTROLLER
- 3. What is PLC History of PLC Components of PLC Operation of PLC Ladder logic Advantages Disadvantages Application Conclusion
- 4. PLC is an industrial computer designed for multiple input and output arrangement. It is a capable of storing the instruction to implement control function such as sequencing, timing, counting, arithmetic and etc.…
- 5. PLC was introduced in late 1960’s First successful Programmable Logic Controllers was designed by Modicum . Earlier, it was a machine with thousands of electronic parts. Later, in 1970’s microprocessor became reality and enhanced the role of PLC.
- 7. POWER SUPPLY Provides the voltage needed to run the primary PLC components. I/O MODULEES Provides signal conversion and isolation between the internal logic level. PROCESSOR Provides intelligence command to the entire PLC system. PROGRAMMING DEVIC Used to enter the desired program that will determine the sequence of operation and control of process equipment or driven machine.
- 9. Most common languages in PLC programming are : Ladder Logic Functional Block Diagram Sequential Function Chart Boolean mnemonics
- 10. Ladder logic
- 11. The main ladder logic symbols represent the elements
- 14. Reliability Flexibility in programming and reprogramming Cost effective for controlling complex system Small physical size High speed of operation Ease of maintenance / troubleshooting Reduced space Energy saving
- 15. Limited design and cost option Fixed circuit operation Plc manufacturers offer only closed architectures
- 16. 1)Robots manufacturing and control 2)Car parking control 3)Train control station system 4)Food processing 5)Materials handling 6)Machine tools 7)Conveyer system etc…
- 17. PLC Ladder Logic for counting Objects on the conveyor
- 18. Start conveyor motor Wait for 10 sec. Objects Detected Detect 10 objects and stop motor Wait for 5 sec and reset circuit Stop motor and restart motor using pushbutton Flow chart No Yes
- 21. Thank you !!!