Inst ToolsInst ToolsInst Tools
  • Courses
  • Automation
    • PLC
    • Control System
    • Safety System
    • Communication
    • Fire & Gas System
  • Instrumentation
    • Design
    • Pressure
    • Temperature
    • Flow
    • Level
    • Vibration
    • Analyzer
    • Control Valve
    • Switch
    • Calibration
    • Erection & Commissioning
  • Interview
    • Instrumentation
    • Electrical
    • Electronics
    • Practical
  • Q&A
    • Instrumentation
    • Control System
    • Electrical
    • Electronics
    • Analog Electronics
    • Digital Electronics
    • Power Electronics
    • Microprocessor
  • Request
Search
  • Books
  • Software
  • Projects
  • Process
  • Tools
  • Basics
  • Formula
  • Power Plant
  • Root Cause Analysis
  • Electrical Basics
  • Animation
  • Standards
  • 4-20 mA Course
  • Siemens PLC Course
Reading: 3 to 8 Line Decoder PLC Ladder Diagram
Share
Font ResizerAa
Inst ToolsInst Tools
Font ResizerAa
  • Courses
  • Design
  • PLC
  • Interview
  • Control System
Search
  • Courses
  • Automation
    • PLC
    • Control System
    • Safety System
    • Communication
    • Fire & Gas System
  • Instrumentation
    • Design
    • Pressure
    • Temperature
    • Flow
    • Level
    • Vibration
    • Analyzer
    • Control Valve
    • Switch
    • Calibration
    • Erection & Commissioning
  • Interview
    • Instrumentation
    • Electrical
    • Electronics
    • Practical
  • Q&A
    • Instrumentation
    • Control System
    • Electrical
    • Electronics
    • Analog Electronics
    • Digital Electronics
    • Power Electronics
    • Microprocessor
  • Request
Follow US
All rights reserved. Reproduction in whole or in part without written permission is prohibited.
Inst Tools > Blog > PLC Tutorials > 3 to 8 Line Decoder PLC Ladder Diagram

3 to 8 Line Decoder PLC Ladder Diagram

Implement 3 to 8 line decoder in PLC using ladder diagram programming language. Learn the PLC tutorials with examples.

Last updated: November 3, 2023 1:43 pm
Editorial Staff
PLC Tutorials
No Comments
Share
4 Min Read
SHARE

Implement 3 to 8 line decoder in PLC using ladder diagram programming language.

Contents
3 to 8 Line DecoderProblem SolutionList of inputs/outputsPLC Program to implement 3 to 8 line decoderProgram DescriptionResult

3 to 8 Line Decoder

3 to 8 Line Decoder Circuit Diagram

Problem Solution

For this problem, we will use S7-1200 PLC and TIA portal software for programming.

This decoder has three inputs and 8 outputs and these inputs determine which output will be ON.

Here three inputs were used (Input 1-I0.0, Input 2-I0.1, and Input 3-I0.2), and 8 outputs were used (Output 1 to 7, Q0.0 to Q0.7).

If all inputs are OFF, output 1 (Q0.0) will be ON and others are not.

List of inputs/outputs

List of inputs

  • Input 1:- I0.0
  • Input 2 :- I0.1
  • Input 3 :- I1.0

List of outputs

  • Output1 :- Q0.0
  • Output 2 :- Q0.1
  • Output 3 :- Q0.2
  • Output 4 :- Q0.3
  • Output 5 :- Q0.4
  • Output 6 :- Q0.5
  • Output 7 :- Q0.6
  • Output 8 :- Q0.7

PLC Program to implement 3 to 8 line decoder

PLC Program for Decoder Logic
Decoder PLC
3 to 8 line decoder
Decoder Ladder Logic
PLC Decoder Application
PLC Decoder Example
PLC Logic for Decoder
PLC Decoder Program

Program Description

For this application, we used S7-1200 PLC and TIA portal software for programming.

Network 1:

If all inputs are OFF (I0.0=0, I0.1=0 and I0.2=0), Output 1 (Q0.0) will be ON.

Network 2:

If input 1 (I0.0) and input 2 (I0.1) are OFF and input 3 (I0.2) is ON, Output 2 (Q0.1) will be ON.

Network 3:

If input 1 (I0.0) and input 3 (I0.2) are OFF and input 2 (I0.1) is ON, Output 3 (Q0.2) will be ON.

Network 4:

If input 2 (I0.1) and input 3 (I0.2) are ON and input 1 (I0.0) is OFF, Output 4 (Q0.3) will be ON.

Network 5:

If input 2 (I0.1) and input 3 (I0.2) are OFF and input 1 (I0.0) is ON, Output 5 (Q0.4) will be ON.

Network 6:

If input 1 (I0.0) and input 3 (I0.2) are ON and input 2 (I0.1) is OFF, Output 6 (Q0.5) will be ON.

Network 7:

If input 1 (I0.0) and input 2 (I0.1) are ON and input 3 (I0.2) is OFF, Output 7 (Q0.6) will be ON.

Network 8:

If input 1 (I0.0) and input 2 (I0.1) and input 3 (I0.2) are ON, Output 8 (Q0.7) will be ON.

Note :- Above application may be different from actual application. This example is only for explanation purpose only. We can implement this logic in other PLC also. This is the simple concept of 3 to 8 line decoder, we can use this concept in other examples also.

All parameters considered in example are for explanation purpose only, parameters may be different in actual applications. Also all interlocks are not considered in the application.

Result

3 to 8 Line Decoder

Author: Bhavesh

If you liked this article, then please subscribe to our YouTube Channel for PLC and SCADA video tutorials.

You can also follow us on Facebook and Twitter to receive daily updates.

Read Next:

  • PLC 3 Phase Asynchronous Motor Control
  • Energize & De-energize the Outputs using PLC
  • PLC Level Control of Parallel Tanks
  • GE PLC Ladder logic program download
  • Allen Bradley PLC Subroutines
Don't Miss Our Updates
Be the first to get exclusive content straight to your email.
We promise not to spam you. You can unsubscribe at any time.
Invalid email address
You've successfully subscribed !

Continue Reading

Explaining Various Types of Analog Instruments
What are Analog and Digital Signals? Differences, Examples
PLC Timers Program
What is Namur Digital Input Card?
Node-RED in PLC Industrial Automation
Industrial Networking and Wireless Interview Questions
Share This Article
Facebook Whatsapp Whatsapp LinkedIn Copy Link
Share
Leave a Comment

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Stay Connected

128.3kFollowersLike
69.1kFollowersFollow
210kSubscribersSubscribe
38kFollowersFollow

Categories

Explore More

Difference Between Wifi and Industrial Wireless
Free Allen Bradley PLC Ladder Logic Training Course
How CPU Execute Program in Siemens PLC?
FIFO Instruction in Allen Bradley PLC Programming
Scaling with Parameters (SCP) Instruction in PLC
Top 100 PLC Objective Questions and Answers
Types of Expressions in the SCL Language of the Tia Portal
PLC Program for Positive Edge Pulse Output for One Scan Cycle

Keep Learning

Delta HMI and VFD Control with Modbus

Delta HMI and VFD Control with Modbus

Functional Block Diagram of XNOR Logic Gate

PLC Functional Block Diagram for Logic Gates

What is a function call in TIA Portal

Difference Between FC and FB in Tia Portal

Parking Garage Indicator PLC Automation

Parking Garage Indicator: PLC Automation System

Edge Detection in PLC

Edge Detection in PLC Programming

PLC Circuit with Switches

PLC Example with Switches

Compile Project in Tia Portal

Communication between Wincc and Tia Portal

PLC Program for 2 Push buttons to Control 1 Output

PLC Program for 2 Push buttons to Control 1 Output

Learn More

Creepage Distance for Insulators in Substation

Creepage Distance for Insulators in Substation

Triple-offset Butterfly Valves

Butterfly Valves – Concentric, Double-offset, and Triple-offset

Wattmeter Principle

Wattmeter

Pull-up switch circuit.

Pull Up and Pull Down Switch Circuits

Power Electronics Objective Questions

Power Diode Quiz

Siemens PLC Write Protection

How to Protect Siemens PLC using Password?

Circuit Breaker Making Capacity

Circuit Breaker Making Capacity

IEC 61508

What is IEC 61508 ?

Menu

  • About
  • Privacy Policy
  • Copyright

Quick Links

  • Learn PLC
  • Helping Hand
  • Part Time Job

YouTube Subscribe

Follow US
All rights reserved. Reproduction in whole or in part without written permission is prohibited.
Welcome Back!

Sign in to your account

Username or Email Address
Password

Lost your password?