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Sketch a Ladder Diagram for PLC to Energize the Lamp

S Bharadwaj Reddy
Sketch a Ladder Diagram program for this PLC to energize the lamp if the following input conditions are met....

PLC connected to Three Pushbutton Switches

S Bharadwaj Reddy
Suppose we have a PLC connected to three pushbutton switches. Sketch a Ladder Diagram program for program example....

Questions on Allen-Bradley MicroLogix 1000 PLC

S Bharadwaj Reddy
Suppose we have an Allen-Bradley MicroLogix 1000 PLC and two pressure switches we need to connect to it....

PLC Programming Question & Answer

S Bharadwaj Reddy
Question & Answer - A PLC has been programming to control the starting and stopping of a three-phase electric motor....

Example PLC Program

S Bharadwaj Reddy
A PLC has been programming to control the starting and stopping of a three-phase electric motor....

Identify the Problem in the PLC Program

S Bharadwaj Reddy
Identify the problem(s) in this PLC program, and modify it so that it will work as it should....

Troubleshooting PLC Permissive Inputs

S Bharadwaj Reddy
We have a problem in one of the PLC Permissive Inputs that there is a programming mistake, do the troubleshooting....

PLC Program to Control a Water Pump

S Bharadwaj Reddy
PLC program to control a water pump driven by an electric motor. It will be manually started and stopped by pushbutton switches, and shut down automatically by any one of...

Down Counter PLC Program

S Bharadwaj Reddy
To study the working of Up Counter PLC program in Allen Bradley Programmable Logic Controller (PLC). Down Counter In the above picture, there are totally three parameter, COUNTER: C4:0 –...

PLC Important Questions and Answers

S Bharadwaj Reddy
This post covers the PLC important questions and answers which are discussed in an interview for automation engineer or PLC engineer. PLC Important Questions What is PLC ? An industrial ...

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