Programmable Logic Controllers (BEE714C)

Programmable Logic Controllers

Course Code BEE714C 
CIE Marks 50
Teaching Hours/Week (L:T:P: S) 3:0:0:0 
SEE Marks 50
Total Hours of Pedagogy 40 
Total Marks 100
Credits 03 
Examination type (SEE) Theory

Module-1

Programmable Logic Controllers: Introduction, Parts of a PLC, Principles of Operation, Modifying the

Operation, PLCs versus Computers, PLC Size and Application.

PLC Hardware Components: The I/O Section, Discrete I/O Modules, Analog I/O Modules, Special I/O Modules,

I/O Specifications, The Central Processing Unit (CPU), Memory Design, Memory Types, Programming Terminal

Devices, Recording and Retrieving Data, Human Machine Interfaces (HMIs)

Basics of PLC Programming: 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.

Module-2

Developing Fundamental PLC Wiring Diagrams and Ladder Logic Programs: Electromagnetic Control

Relays, Contactors, Motor Starters, Manually Operated Switches, Mechanically Operated Switches, Sensors,

Output Control Devices, Seal-In Circuits, Latching Relays, Converting Relay Schematics into PLC Ladder

Programs, Writing a Ladder Logic Program Directly from a Narrative Description.

Programming Timers: Mechanical Timing Relays, Timer Instructions, On-Delay Timer Instruction, Off-Delay

Timer Instruction, Retentive Timer, Cascading Timers.

Module-3

Programming Counters: Counter Instructions, Up-Counter, Down-Counter, Cascading Counters, Incremental

Encoder-Counter Applications, Combining Counter and Timer Functions.

Program Control Instructions: Master Control Reset Instruction, Jump Instruction, Subroutine Functions,

Immediate Input and Immediate Output Instructions, Forcing External I/O Addresses, Safety Circuitry,

Selectable Timed Interrupt, Fault Routine, Temporary End Instruction, Suspend Instruction

Module-4

Data Manipulation Instructions: Data Manipulation, Data Transfer Operations, Data Compare Instructions,

Data Manipulation Programs, Numerical Data I/O Interfaces, Closed-Loop Control.

Math Instructions: Math Instructions, Addition Instruction, Subtraction Instruction, Multiplication

Instruction, Division Instruction, Other Word-Level Math Instructions, File Arithmetic Operations

Module-5

Sequencer and Shift Register Instructions: Mechanical Sequencers, Sequencer Instructions, Sequencer

Programs, Bit Shift Registers, Word Shift Operations.

Process Control, Network Systems, and SCADA: Types of Processes, Structure of Control Systems, On/Off

Control, PID Control, Motion Control, Data Communications, Supervisory

Control and Data Acquisition (SCADA).

Suggested Learning Resources:

Books

1. Programmable Logic Controllers, Frank D Petruzella, McGraw Hill, 4th Edition, 2011

Reference Books

1. Programmable Logic Controllers an Engineer’s Guide, E A Parr Newnes, 3rd Edition, 2013

2. Introduction Programmable Logic Controllers, , Gary Dunning, Cengage, 3rd Edition, 2006