E – 3035 PLC Programming for HVAC Equipment

This document reviews the role of programmable logic controllers (PLCs) in HVAC equipment automation. It discusses the building design lifecycle, the transition from pneumatic to digital controls, and the sequence of operation for exhaust fans using PLC programming. The content introduces PLC hardware, wiring diagrams, communication protocols, and programming languages such as Ladder Logic (LAD), Statement List (STL), and Function Block Diagram (FBD). The course also demonstrates how sequences of operation are implemented in a PLC and highlights the role of SCADA systems in supervising and monitoring building automation processes.