Simple motor operation using PLC
PLC Ladder motor Problem: Controlling the running state of the 1 ph motor by PLC ; pressing START and STOP pushbuttons i.e. motor should remain...
Tag : plc
Data Handling Instructions for PLC
Introduction This session contains general information about the data handling instructions for plc and explains how they function in your application program. Convert to BCD...
Comparison instructions of PLC
Introduction Comparison instructions in PLC are used to test pairs of values to condition the logical continuity of a rung. As an example, suppose a...
PLC Interview Questions with Answers Part 2
This session is the continuation of PLC Interview Questions with Answers Part 1 This session also contains 15 questions.The link to the PLC interview question...
PLC Interview Questions with Answers Part 1
In this session we are gonna discuss about some PLC Interview Questions with Answers and this part contains 15 questions 1. What is Programmable Logic Controllers...
DIFFERENCE BETWEEN DCS ,PLC AND SCADA
DIFFERENCE BETWEEN DCS ,PLC AND SCADA SCADA (Supervisory contol and Data Acquisition) is essentially a computer based (usually PC nowadays) system for displaying field data. The difference...
COUNTERS in PLC Programming
Introduction There are two basic counter types: count-up and count-down. When the input to a count-up counter goes true the accumulator value will increase by...
Low Cost PLC’s for beginners
Introduction I would like to introduce some low cost PLC’s (Programmable Logic Controller) hardware for beginners to learn about PLC. Instead of wasting money in PLC...
Instrumentation interview questions
What is Process control? A process control is continuous changing of a process variable to desire variable according to the measured feedback variable from the process. A...
Introduction to PLC hardware- part 2
Introduction Earlier we discussed about the basics of PLC hardware .This is the continuation of that .In this session we are focussing on inputs and...