Control Room and Field Instruments Questions and Answers
Instrument Engineers Interview Questions, Control Room Interview Questions, Field Instruments Questions and Answers, Instrumentation Questions & Answers.
PLC Tutorials
Tutorials of Programmable Logic Controller – Learn PLC programs and ladder logic lectures of GE, ABB, Siemens, Allen Bradley, Omron PLC’s.
PLC Sinking and Sourcing Explanation
PLC Sinking and Sourcing describes a current signal flow relationship between field input and output devices in a control system and their power supply.
Sink or Source? Normally Open or Normally Closed?
We discuss concepts of Sink or Source used in electrical circuits or in PLC wiring. Also we deal with basics of normally open contact or normally closed contact.
What is a PLC? – Programmable Logic Controller
A Programmable Logic Controller, also called a PLC or programmable controller, is a computer-type device used to control equipment in an industrial facility.
Troubleshooting a 4-20mA Current loop
The basic layout of every 4-20mA loop consists of a power supply, a transmitter, and passive loop devices. The supply produces the energy to run loop.
PLC Programming Videos
Join us on our YouTube channel, dive into the engaging world of PLC Programming, and become an PLC expert with our videos.
Main differences between Sinking and Sourcing Circuits
Sinking vs Sourcing : What are the main differences between sinking and sourcing circuits ? Sinking is switching the load in the negative leg of a circuit.
Industrial Networking and Wireless Interview Questions
Industrial Ethernet and Wireless Communication Questions. Also Read Industrial Networking and Wireless Interview Questions with Answers.
Equivalent Logic Gates using PLC Ladder Diagrams
Explain the basic digital logic gates circuit and boolean logic with PLC programming. Show the Equivalent Logic Gates using PLC Ladder Diagrams.
PLC Program Examples
Discuss different PLC program examples for Signal lamp task, Valve operation program and make an output switch off when any of the sensors activated.