PLC sinhala 07

PLC Ladder programming fundamentals This video provides a foundational overview of the internal components of a Programmable Logic Controller (PLC) and introduces the basics of Ladder Logic programming. Key Topics Covered: Internal Hardware Components: The instructor explains the role of the CPU (Central Processing Unit), the Memory units, and the Power Supply within a PLC system. PLC Architecture: It discusses the difference between Compact PLCs and modular systems, as well as the use of Expansion Modules to increase input/output capacity. Introduction to Programming: The video transitions from hardware to software, explaining how Electrical Diagrams are converted into Computer Language for the PLC. Ladder Logic Basics: A significant portion of the video is dedicated to explaining basic programming symbols like Open Contacts and how to construct a digital program diagram. Inputs and Indicators: The lesson covers how input signals are monitored via indicators and how they influence the final output.