Ladder Logic MCQ Questions and Answers
Understand ladder logic with detailed questions and answers for technicians and engineers focusing on PLC programming basics.
PLC Basics
PLC Connection between Instrument, Junction Box, Marshalling & System Cabinet
A PLC connection represents the signal flow starting from the field transmitters, junction box, marshalling cabinet, system cabinet and Human-Machine
How PLC Reads the Data from Field Transmitters
Instrumentation and control rely on converting physical or process variables into a more useful format for the operator display. Pressure
PLC Valve Control Ladder Logic Programming
Objective : To understand the basic concept of PLC Valve Control Ladder Logic. Target Users : Students, Technicians, Freshers, Trainee
Contacts and Coils in PLC Ladder Logic
The most elementary objects in Ladder Diagram programming are contacts and coils, intended to mimic the contacts and coils of
Basics of PLC Programming
In the late 1960’s an American company named Bedford Associates released a computing device they called the MODICON. As an
Normally-Closed Contacts for Stop Buttons
This article teach you how-to use normally-open and normally-closed for inputs in PLC program. Why PLC uses Normally-Closed contacts for Stop Buttons?
PLC Program for Control Valve Scaling
PLC Analog Scaling example for the valve. We discuss about PLC Program for Control Valve Scaling using Siemens PLC Programming software.