Skip to main content

Plc-Programmable Logic Controller/Working & Application/Industrial Automation Basic.

Image
By Prathima
What is PLC?
A Programmable Logic Controller, or PLC, is a Micro controller Based Device  used for industrial automation. These controllers can make  automatic  for a specific process, machinery, Home Automation  or even an entire production line.

How PLC does work?

We have to connect the all the input and output devices to the plc module to activate all inputs and outputs by writing program in PLC. The PLC receives information from connected sensors or input devices, processes the data, and triggers outputs based on pre-programmed parameters.
Depends on Your requirement you have to connect input and output to accordingly. Let’s if you want to do home automation, then you have to connect the sensor to get light automatic on. Check the connection below.
Function Block Of Plc
In a PLC System:
v  The control program inside the PLC provides the wiring connection between the devices.
v   The control program is the computer program stored in the PLC’s memory that tells the PLC what’s supposed to be going on in the system.
v  The use of a PLC to provide the wiring connections between system devices may be called soft wiring. This soft wiring feature is useful.
Main components of PLC
PLC Programming?
A program consists of  one or more instructions that accomplish a task. Programming a PLC is simply constructing a set of instructions. There are several ways of programming languages in plc, they are:
v  ladder logic
v   statement lists,
v   function block diagram
Before writing the program in plc you need to connect the module with PLC software by using communication port like RS232,Serial Communication,Modbus or Ethernet based on your application. You need to give the connection to all your in put and out devices, Then you have to write the program in plc. Ladder Logic is the traditional programming language.There are four basic steps in the operation of all PLCs; Input Scan, Program Scan, Output Scan, and Housekeeping. These steps continually take place in a repeating loop.
Scan Cycle:
During each operating cycle, the processor reads all inputs, takes these values, and energizes or de-energizes the outputs according to the user program. This process is known as Scan.
Steps:
v   Read the input
v   Execute the logic
v   Update output

The logic is downloaded from PC to PLC, then start Scanning.
Application
  Conveyor systems.
  Food processing Machinery.
 Bottle Filling Process.
   Automobile industries.
   Fluid level control.
 Mixing fluids Process
 Motor speed control.
 Home automation.
Watch my video related plc

Labels:

Comments

Post a Comment

If you have any Doubts plz let me know

Popular posts from this blog

Level Indicator/Working and its uses

By Prathima
Level indicators   Level indicator is used to detect liquid levels. This is mainly used in water treatment plants, Sewage treatment facilities, buildings , housing complexes and so many other appliances. It will sense lower to higher level of water which is connected to control panel to give the information about the level of liquids. Water level indicator is a combination of probe  sensor or float switches. Working of level indicator   The mechanism of level indicator is quite simple. It will sense the level of liquid in storage tank by using sensor probes. When water reaches a certain level it will give signal to your connected device(Probes send information back to the control panel to trigger an alarm or any indicator. When we are using any type of sensor our motor is to control all the equipment automatically, here  also same, when you connecting the level indicator in storage tank, the control panel can be programmed to automatically turn on or off ...
1 comment
Read more

What Is SCADA System

By Prathima
SCADA                 Supervisory Control and Data Acquisition or SCADA is an automation control system used in industries such as energy, oil and gas, water power and many more.         The system has a centralized system that monitors and controls the entire country from industrial plants to plant premises.             The SCADA system works by working with signals that communicate through channels to provide the user with remote control of any device in a system.        There are some essential parts composed of highly controllers and monitoring Systems. 1. SCADA system human machine interface or HMI supervisory system remote terminal units 2. RTu  use programmable logic controllers or PLC and communication infrastructure. HMI processes the data and sends it to the human operator. Where they can monitor or control the system.          The supervi...
Post a Comment
Read more

What is HTML & CSS

By Prathima
 HTML HTML (Hypertext Markup Language) and CSS (Cascading Style Sheets) are two fundamental technologies used in web development to create and style web pages. They work together to structure and design web content, allowing developers to create visually appealing and functional websites. Let's explore each of them in detail: HTML (Hypertext Markup Language): HTML is the backbone of every web page. It is a markup language used to structure the content of a web page, defining elements and their relationships. HTML documents are made up of collections of elements, denoted by tags enclosed in angle brackets (<>). Here is a breakdown of the main features of HTML: Elements: HTML documents consist of elements, which are the building blocks of a web page. Elements are defined by tags and can be nested inside each other. Common elements include headings (<h1>, <h2>, etc.), paragraphs (<p>), lists (<ul>, <ol>, <li>), links (<a>), images (<...
Post a Comment
Read more