Teaching Plc In Automation: A Case Study

Programmable logic controllers, PLCs, have become the industry standard, replacing the hard-wired electromechanical devices, in controlling process machines and driving the equipment of manufacturing. Varying in size and sophistication, these electronic devices are now produced by over 50 manufacturers. In our 2 and 4 credithours courses for manufacturing and electronic engineering technology students, relay circuits, fundamentals of sensors, and electrical controls are explained first. Then, the PLCs, from hardware structures, installation, wiring, to ladder logic programming are elucidated. Experience in teaching two different groups of students with different academic background and preparation are presented. Approaches taken in each class are discussed.