Programmable Logic Controller (PLC) Assignment: Alarm & Car Park

This document presents a comprehensive solution to a PLC programming assignment, focusing on two key applications: an alarm simulation system and a car park management system. The alarm simulation section details the use of an Arduino microcontroller, providing the associated code, and explains the logic behind the system's operation, including inputs for plant alarm conditions, operator accept buttons, and lamp test buttons, alongside outputs for amber lights, green lights, and audible alarms. The solution also includes a ladder diagram representation of the alarm system, explaining each rung's function and how it interacts with the system's inputs and outputs. The car park system portion provides a description of how the system operates, detailing how sensor signals are interpreted to indicate the availability of parking spaces, and the logic behind the use of AND gates and signal inversion to control the output signals for green and red lights. References to relevant literature are also provided. This document aims to provide a thorough understanding of PLC programming concepts, control systems, and industrial automation applications.