34-402

Description

This simple sequence application allows simple traffic light control of a crossroads to be implemented on a timed sequence. The control program can be further developed to cope with interrupts generated from pedestrian crossing requests or off-peak vehicle detector inputs.

Features

• Timed sequence control
• Interrupt device control
• Easy to understand process
• Low cost

Curriculum Coverage

• Fundamentals of logic
• Basics of PLC programming
• Developing ladder logic programs
• Programming timers
• Setting initial conditions
• Time-based process control
• Use of interrupts and emergency stop