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PROGRAMMABLE LOGICAL CONTROLLERS
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DI04020051
Code: DI04020051
Credits: 4
Semester 4
Production
Programmable Logical Controllers
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Follow on Instagram for UpdatesProgrammable Logical Controllers Syllabus — Unit-wise Content
The official GTU curriculum for Programmable Logical Controllers (subject code DI04020051) as prescribed for Production · Semester 4 divides the course into 5 units, covering 36 listed topics. The unit-wise breakdown below is read from the GTU syllabus document for this subject code, so you can check what the course actually covers before deciding which papers to attempt.
Download the official syllabus PDF (DI04020051)Unit 1 Introduction to PLC
- 1.1. History of PLC
- 1.2. Principles of operation of PLC
- 1.3. PLC verses computer
- 1.4. PLC Architecture
- 1.5. Scan time of a cycle
- 1.6. Manufacturers of PLC
- 1.7. Need of Automation in Industries.
- 1.8. Concept of SCADA GUJARAT TECHNOLOGICAL UNIVERSITY Program Name: Diploma Engineering Level: Diploma Branch: Mechatronics Engineering Subject Code: DI04020051 Subject Name : Programmable Logical Controllers w.e.f. 2025-26 http://syllabus.gtu.ac.in/ Page 3 of 7
Unit 2 PLC Memory and Logical Sensor
- 2.1. Memory Address.
- 2.2. Program Files.
- 2.3. Data files: User Bits Memory, Timer Counter Memory, PLC Status Bits, User Function Control Memory, Integer Memory, Floating Point Memory
- 2.4. Sensor wiring: Switches, TTL, Sinking and sourcing, Connection of switch
- 2.5. Human/ product Presence Detection Sensors: Reed Switch, Optical Sensor, Capacitive Sensor, Inductive Sensor
Unit 3 Boolean Logic Design and Timers, Counter, Latch Concept
- 3.1. Boolean algebra: Rules of Boolean Algebra, Logic Design for a given application
- 3.2. Common Logic Forms: Complex gate forms, Multiplexer.
- 3.3. Timers: On-delay timer, Off-delay timer, Retentive timer.
- 3.4. Counters: Up-Counters, Down- Counter, Up-Down Counter.
- 3.5. Master Control Relay. GUJARAT TECHNOLOGICAL UNIVERSITY Program Name: Diploma Engineering Level: Diploma Branch: Mechatronics Engineering Subject Code: DI04020051 Subject Name : Programmable Logical Controllers w.e.f. 2025-26 http://syllabus.gtu.ac.in/ Page 4 of 7
Unit 4 Ladder Logic Function and Advance Functions
- 4.1. Data handling Function: Move Function, Mathematical Function, Conversion Function
- 4.2. Logic Function: Comparison of Value, Boolean Function
- 4.3. List Function: Shift registers, Stacks,
- 4.4. Program Control: Branching and Looping.
Unit 5 PLC’s selection criteria 5a.State the criteria for selection of PLC 5b.Select right PLC for a given application / software.
- 5.1. PLC selection criteria.
- 5.2. PLC specifications
- 5.3. PLC Advantages & Disadvantages SUGGESTED PRACTICAL EXERCISES:- The following practical outcomes (PrOs) are the sub-components of the COs. Some of the PrOs marked ‘*’ are compulsory, as they are crucial for that particular CO at the ‘Precision Level’ of Dave’s Taxonomy related to ‘Psychomotor Domain’. Sr. No. Practical Outcomes (PrOs) Approx. Hrs. required
- 1. (a) Identify various modules and component of PLC hardware. (b) Learn the basics and hardware components of PLC. 04*
- 2. Identify various peripherals for interfacing with PLC. 02* 3. (a) Draw wiring Diagrams for Digital Input (DI) and Digital Output (DO) signals for PLC. (b) Draw wiring Diagrams for Analog Input (AI), and Analog Output (AO) signals for PLC. 02*
- 4. Describe the method of program scanning in PLC. 02*
- 5. Develop ladder logic to test functionality of basic logic gates. 02*
- 6. Develop ladder diagram to prepare latching relay. 02* GUJARAT TECHNOLOGICAL UNIVERSITY Program Name: Diploma Engineering Level: Diploma Branch: Mechatronics Engineering Subject Code: DI04020051 Subject Name : Programmable Logical Controllers w.e.f. 2025-26 http://syllabus.gtu.ac.in/ Page 5 of 7
- 7. Draw ladder diagram for given Boolean expression. 02*
- 8. To Study Different Types of Timers & Counters in PLC. 02*
- 9. Implementation of simple ladder logic program using timer. 1) On delay timer 2) Off delay timer 3) Retentive timer 02*
- 10. Simulate Industrial application of Arithmetic Function for plc. 02*
- 11. Simulate Industrial application of Comparison Functions. 02*
- 12. Develop ladder programming for a given statement - To on the bulb 1 after 5 sec of switch1 on. Turn the bulb 2 on after the 5 sec of bulb1 on and test. 02* 13. Develop ladder programming for a given statement -To on the bulb After 5 sec of switch off. Turn the bulb 2 off after the 5 sec of bulb1 on and test. 02* Total (Hours) 28 NOTES:- I. More Practical Exercises can be designed and offered by the concerned course teacher to develop the industry-relevant skills/outcomes to match the COs. The above table is only a representative list. II. It is compulsory to prepare log book/continuous records of exercises. It is also required to get each exercise recorded in log book/continuous records, checked and duly dated signed by teacher. CA component of practical marks is dependent on continuous and timely evaluation of exercises. III. Term work report must not include any photocopy/ies, printed manual/pages, litho, etc. It must be hand written / hand drawn by student only. a. Brief details of industry visited. b. Type, location, products, rough layout, human resource, etc., of industry. c. Details, description and broad specifications of machineries/processes observed. d. Safety norms and precautions observed. e. Student’s own observation on industrial environment, productivity concepts, quality consciousness and quality standards, cost effectiveness, culture and attitude. f. Any other details/ observations asked by accompanying faculty. IV. For practical ESE part, students are to be assessed for competencies achieved. They should be assigned the necessary data and should be given any one experience to perform. The following are some sample 'Process' and 'Product' related skills (more may be added/deleted depending on the course) that occur in the above-listed Practical Exercises of this course required, which are embedded in the COs and, ultimately, the competency. GUJARAT TECHNOLOGICAL UNIVERSITY Program Name: Diploma Engineering Level: Diploma Branch: Mechatronics Engineering Subject Code: DI04020051 Subject Name : Programmable Logical Controllers w.e.f. 2025-26 http://syllabus.gtu.ac.in/ Page 6 of 7 SUGGESTED SPECIAL INSTRUCTIONAL STRATEGIES (if any) Programmable logic Controllers being a most important subject of Mechatronics, teachers are expected to lay considerable stress on understanding the basic concepts, principles, and applications. For this purpose, teachers are expected to give simple problems in the classroom and provide tutorial exercises to develop the necessary knowledge for comprehending the basic concepts and principles. As far as possible, teaching the subject is supplemented by demonstrations and practical work in the laboratory using various PLC Simulation Software’s.
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