PLC based Door Open and Closing System
We have come across automatic door opening system in shopping malls; working of such automatic system using PLC based Door Open and Closing System. PLC based Door Open and Closing…
SCADA Multiple Choice Questions
You can find the top 10 objective questions and answers on SCADA ( Supervisory Control and Data Acquisition ). A quiz also available at the end of the article to…
Distributed Control System Objective Questions
You can find the top 10 objective questions and answers on distributed control system (DCS). A quiz also available at the end of the article to practice the questions and…
How to use Sub Routines with Allen Bradley PLC
Sub routines are sub programs in a PLC project. We can split the whole program by its function or sequence. We can call the sub programs from main page using…
How to choose between PLC and DCS Systems ?
PLC or DCS System ? The following steps discuss about How to choose PLC or DCS systems ? Step 1: Does process require implementation of advanced process control (APC)? No doubt,…
How Capacitive Pressure Sensor Works ?
The Capacitive pressure sensor operates on the principle that, if the sensing diaphragm between two capacitor plates is deformed by a differential pressure, an imbalance of capacitance will occur between…
Car Parking System using PLC Programming
Car parking system is one of the examples in PLC program using RSLOGIX 500. Car Parking System There are two garages for parking four wheelers in the building. Each garage…
Top 30 Interview Questions on Pressure Measuring Devices
Here you find the Top 30 Interview Questions on Pressure Measuring Devices in Pressure Measurement for your exam or job preparation. Pressure Measuring Devices Questions 1. Define Absolute pressure The…
PLC Program for Bank Counter Application
A bank having three counters for Deposit /Withdraw cash in which totally 15 people are allowed for a day. When people count reaches 15, display will show Counter Closed and…
Laws of Boolean Algebra using Ladder Logic
Laws of Boolean algebra are used in digital electronics. Explain the Boolean algebra law using ladder language. Laws of Boolean Algebra using Ladder Logic There are three basic laws of…
