plc ladder logic interview questions

PLC Switch Actuation Status
  • Practical Questions

PLC Switch Actuation Status

Determine the necessary PLC switch actuation status (i.e. low versus high process stimulus) to turn the yellow lamp on.

3 years ago
  • Practical Questions

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.

3 years ago
  • Practical Questions

PLC connected to Three Pushbutton Switches

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

3 years ago
  • Practical Questions

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.

3 years ago
  • Practical Questions

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…

3 years ago
  • Practical Questions

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”…

3 years ago
  • Practical Questions

PLC Electric Motor Interlocks

Programmable Logic Controller Questions and Answers The following PLC program was written to control the operation of a large electric…

3 years ago
  • PLC Tutorials

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…

3 years ago
  • PLC Tutorials

PLC Program for Automatic Liquid Mixing Application

Create a PLC Program for Automatic Liquid Mixing Application using ladder logic programming. Study about mixing process using PLC ladder…

6 months ago
  • PLC Tutorials

PLC Program for Sequential Motor Control

PLC Ladder Logic for Sequential Motor Control. Study about PLC Motor Programming tutorials and implement PLC Ladder Logic for the…

6 months ago