Unit 1 PLC BASICS 2 4

• Programmable Logic Controllers (PLCs): Introduction
• definition & history of the PLC
• Principles of Operation
• Various Parts of a PLC: CPU & programmer/ monitors
• PLC input & output modules
• Solid state memory
• the processor
• power supplies
• PLC advantage & disadvantage
• PLC versus Computers
• PLC Application
• Programming equipment
• proper construction of PLC ladder diagrams
• process scanning consideration
• PLC operational faults
• PLC Hardware Components 2 4

Unit 2 The I/O section, Discrete I/O Modules, Analog I/O Modules, Special I/O Modules,

• The CPU, Memory design
• Memory Types
• Programming Devices
• Selection of wire types and size

Unit 3 Fundamentals of Logic 2 4

• The Binary Concept, AND, OR and NOT functions
• Boolean Algebra
• Developing circuits from Boolean Expression expressions
• Producing the Boolean equation from given circuit
• Hardwired logic versus programmed logic
• Programming word level logic instructions
• Converting Relay schematics and Boolean equation into PLC Ladder Programs
• Writing a ladder logic program directly from a narrative description

Unit 4 Various INPUT /OUTPUT Devices and its interfacing with PLC. 4 8 Different types of Input devices

• Switches: Push button Switches
• Toggle Switches
• Proximity switches
• Photo Subject Code: 3161714 w.e.f
• AY 2018-19 switches
• Temperature Switch
• Pressure Switch, and Level Switch
• Flow Switches
• manually operated switches
• Motor starters
• Transducers and sensors
• Transmitters etc
• Their working
• specification and interfacing with PLC
• Different types of Output devices : Electromagnetic Control Relays
• Latching relays
• Solenoid Valves etc

Unit 5 Basics of PLC Programming 6 12

• Processor Memory Organization
• Program Scan
• PLC Programming languages
• Relay type instructions
• Instruction addressing
• Branch Instructions
• Internal Relay Instructions
• Programming Examine if Closed and examine If Open instructions
• Entering the ladder diagram
• Modes of operation
• Creating Ladder Diagrams from Process Control Descriptions
• Ladder diagram & sequence listing
• large process ladder diagram construction
• flow charting as programming method
• Industrial Examples

Unit 6 PLC INSTRUCTIONS 3 6

• Bit Logic Instructions: NO, NC, Set, Reset
• rising edge Pulse
• Falling Edge Pulse, RS, SR, NOP, OUTPUT etc
• Clock: READ RTC, SET_RTC
• Different Logical operation Instructions: INVERT BIT, BYTE
• WORD DOUBLE WORD
• OR: BIT, BYTE
• AND: BIT, BYTE
• X-OR: BIT, BYTE

Unit 7 Different Integer Math Instructions

4 lecture hours

• Decrement- Integer
• Double Word
• Different Floating-Point Math Instructions: Addition
• Square Root, Sin, Cosine, Tan, LN, Exponential, PID

Unit 8 Programming Timers 2 4

• Mechanical Timing relay
• Timer instructions
• ON delay timer instruction
• Off-Delay timer instruction
• Retentive Timer
• Cascading Timers
• examples of timer function industrial application
• industrial process timing application

Unit 9 Programming Counters 2 4

• Counter Instructions
• down counter
• Up- Down counter
• Cascading counters
• Incremental encoder counter applications
• Combining counter and timer functions
• High Speed counter instruction, HSC, PLS, examples of counter function industrial application

Unit 10 Different Conversion Instructions

2 lecture hours

• Byte – Integer
• Integer To Byte
• Integer To Double Integer
• Double Integer To Integer
• Real To Integer
• Integer To String
• String To Integer
• Integer To ASCII
• ASCII To Integer
• Real To ASCII
• ASCII To Real
• ASCII To Hexadecimal
• Hexa- Decimal To ASCII

Unit 11 Different Comparison Instructions 2 4

• Data manipulation
• data transfer operations
• Data compare instructions
• Data manipulation Programs
• Numerical Data I/O interfaces
• Set-point control

Unit 12 Program Control Instructions 3 6

• The PLC SKIP and MASTER CONTROL RELAY Functions
• the SKIP function & application
• the MASTER CNTROL RELAY function & application
• Introduction: Jump with non-return
• jump with return

Unit 13 DATA HANDLING FUNCTIONS 2 4

• PLC Data Move Systems
• PLC MOVE function & application
• moving large blocks of PLC data
• PLC table & registers moves
• other PLC MOVE functions
• Other PLC Data Handling Functions
• Subject Code: 3161714 w.e.f
• AY 2018-19 Different Move Instructions: BIT, BYTE
• WORD DOUBLE WORD
• SWAP Byte
• Move Byte Immediate Read
• Move Byte Immediate Write
• Different Shift/Rotate Instructions

Unit 14 Sequencer and shift register instructions 3 6

• PLC Sequencer Functions
• electromechanical sequencing
• the basic PLC sequencerfunction
• a basic PLC sequencer application with timing
• other PLCsequencer function
• cascading sequencer
• Controlling a Robot with a PLC
• basic two axis ROBOT with PLC sequencer control
• industrial three axis ROBOT with PLC control

Unit 16 PLC Networking 2 4

• Levels of Industrial Control
• Types of Networking
• Network Communications

Unit 17 Analog PLC Operation 2 4

• Types of PLC Analog Modules and Systems
• PLC Analog Signal Processing
• PLC Analog Application Examples
• PID Modules
• PID Tuning
• Typical PID Functions

Unit 18 Basics of SCADA

2 lecture hours

• SCADA key features
• remote Terminal Units (RTU)
• PLC used as RTU, DCS versus SCADA terminology
• SCADA software packages
• Application example of SCADA Maintenance
• Connecting PC with PLC

Unit 19 Alternative Programming Languages 3 6

• Structured Text
• Function block diagram
• Instruction list
• sequential function chart – Introduction and of few instructions with LD

Unit 20 Various Brands of PLCs and their revolution. 1 2

• Siemens PLC, Allen Bradley PLC, Schneider electric PLC, Omron PLC, Mitsubishi PLC
• Their comparison of various instructions