PLC(Programmable Logic Controller) Basics for Beginners | what is PLC?
PROGRAMMABLE
LOGIC CONTROLLER (PLC)
Programmable Logic Controller(PLC) This is Heart and Brain of The Now day industries.PLC and Automation Change The Industries world into the next level. Previous days Industries using Relay logic and Bulk Electrical Circuit's This Setup Not Reliable to Industries so Mechanical Engineer Mr.Dick Morley Invented PLC to change The Automation Company's going to be next level Overall PLC using for Industrial Automation.
PLC Hardware
PLC has an important hardware Unit to process Industrial data and control accurately every industrial Process. Below I will mention the PLC main hardware parts
1)CPU-Central Processing Unit
2)Input Module
3)Output Module
4)Memory Unit
5)Communication Interface
We discussing The all-important parts in PLC one by one let's begin. you Learn PLC programming I will help you leave your comment section.
CPU-Central Processing Unit
Already you know what is CPU. Every Electronics product contain CPU this is similar to the human brain Even your smartphone, TV, your gaming console Everything contains CPU PLC also Electronic device so this is a main part of PLC this unit solves Arithmetic and logic problems in PLC's. Ladder Logic program Scanning process also is done by PLC CPUs. Ladder Logic is nothing Programming Languages for PLC's.differnt type of PLC Programming Languages available but mainly using Ladder logic Main programming Language.
Input Module
Input Module This is working for 24 volt and 10 milliamps current.this unit carries the input device's in PLCs like Sensors, PushButton, Encoder's Much More. this Unit Constructed by Relays and Transsisters I think you know what is this? I will teach you major properties of the Input module,
Output Module
Output Module This unit also working well 24 volt and 10 milliamps current. This unit using for connecting field devices in your PLC's field devices is like Motors, Contactors, VFD(Variable field devices). and Servo motor connected and control by using the Output Module.
Memory Unit
Different types of memory already Know like ROM and RAM. read Only memory using for store input and output routing table and Timer counter's PLC address too. Then Random-access Memory using for fetch to the data CPU to storage devices.
Another important thing is a memory store your Ladder programming and execute via scanning cycle.
Communication Interface
Communication Terminal Impotent unit of PLCs Because Every monitoring and programming was done by communication interface communication supported by different protocols and different hardware configurations PLC also supported by Ethernet, USB, Serial communication and Parallel communications. Nowadays PLC's supported IoT configurations famous PLC's also Lunch IoT enabled PLC's.
