PLC Learning Series - Program Cyclic Scan

The programmable logic controller (PLC) is a simple rugged industrial computer. This free plc training series is designed for everyone to learn about these controllers. PLCs are constantly evolving and continue to be the best option for a variety of industrial automation applications. Programmable logic controllers (PLC) use a cyclic scan. The time that it takes to complete one scan is called Scan Time. Typical scan times range from 10 milliseconds to 10 microseconds. This translates from 0.01 to 0.0001 seconds per PLC scan. Understanding how the program scan will help us in programming and troubleshooting the PLC. The simplest scan cycle of a PLC consists of 4 steps. Read inputs, execute program, diagnostics, and communication, and update outputs. We will be looking at each of these steps in a little more detail as we discuss the PLC program cyclic scan. Let’s get started. More information can be obtained at our website. This includes all of the links mentioned in this video. https://accautomation.ca/plc-learning-series-program-cyclic-scan/ Previously in this PLC Learning Series: PLC Training Series - Tutorial for Everyone https://accautomation.ca/plc-training-series-tutorial-for-everyone/ https://youtu.be/9TpW32gw2Kg What are Inputs? https://accautomation.ca/plc-learning-series-what-are-inputs/ https://youtu.be/d-eB41XV5Qo What are Outputs? https://accautomation.ca/plc-learning-series-what-are-outputs/ https://youtu.be/AjgQcO9IrDU Memory Backup https://accautomation.ca/plc-learning-series-memory-backup/