Sketch a Ladder Diagram for PLC to Energize the Lamp
Sketch a Ladder Diagram program for this PLC to energize the lamp if the following input conditions are met....
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PLC connected to Three Pushbutton Switches
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
Suppose we have an Allen-Bradley MicroLogix 1000 PLC and two pressure switches we need to connect to it....
Motor Trip Logic using PLC Programming
Programmable Logic Controller (PLC) Questions and Answers This PLC is being used to start and stop an electric motor, and also to shut it down automatically if any of three...
PLC Pump Permissive Interlocks
The following PLC program was written to control the operation of a large electric motor-driven pump. A variety of “permissive” inputs protect the pump from damage under abnormal conditions, and...
PLC Electric Motor Interlocks
Programmable Logic Controller Questions and Answers The following PLC program was written to control the operation of a large electric motor-driven pump. A variety of “permissive” inputs protect the pump...
PLC Memory Mapping and I/O addressing
A wise PLC programmer once told me that the first thing any aspiring programmer should learn about the PLC they intend to program is how the digital memory of that...
PLC Program for Automatic Liquid Mixing Application
Liquid Mixing Application This is PLC Program for Automatic Liquid mixing Application. Problem Description In many industries, there are lots of mixing system are used for solutions mixing. Some plants...
PLC Program for Sequential Motor Control
Sequential Motor Control This is PLC Program for Sequential Motor Operating System. Problem Description In many industries, there are lots of motors are used. Sometimes we need to start more...
PLC Program for Two Way Switch Logic
This is PLC Program for Two ways switch logic for staircase light in house PLC Two Way Switch Logic In duplex type house there are ground floor and first floor and...