Objectives:

This course is designed to provide students with an understanding to the basic functions and application of Programmable Logic Controllers.

Upon completion students should:

• Understand the operation of relay logic.
• Understand the difference between hard-wired relay logic and PLC ladder logic.
• Understand the basic architecture and mode of operation of Programmable Logic Controllers.
• Understand how to program a PLC to perform simple control functions.
• Understand simple troubleshooting concepts of a PLC based system.

Prerequisite:

• No formal entry requirements.
• Basic knowledge of DOS and Windows recommended.

Duration:

• Ten (10) 3-hour sessions (24 Contact hours).

Content :

1. Introduction to Relay Logic and application to Industry.
   • Electromechanical relays
   • Contractors and Starters
   • Timers
   • Pilot Devices
   • Sensors, Detectors and Control and Signaling Units
2. History and Development of the PLC
   • Advantages of PLC control
   • PLC vs. Hard-wired relay systems
3. PLC hardware overview
   • CPU and Memory
   • Input/Output (I/O) Modules
   • Discrete and Analog Modules
4. Ladder Logic Instructions
   • Basic instructions
   • Boolean functions
   • Ladder Logic diagrams
5. PLC Simulation software
   • Program on/off inputs to produce on/off Outputs
   • Simple programming exercises utilizing timers and counters
6. Practical Assignments