Where should I start to learn PLC programming?

Detail

First things first, let's get familiar with what a PLC actually is. Think of a PLC as the brain behind all those automated processes in industries like manufacturing, energy, and even amusement parks. They control machinery, monitor outputs, and input conditions, and make decisions based on pre-programmed logic. Sounds fascinating, right? Now, let’s break down the steps to get you on the path to becoming a PLC programming pro.

Before you even touch a piece of PLC hardware, it’s essential to get a grasp on the fundamentals. There are plenty of online resources that can help. Websites like PLC Academy and RealPars offer excellent introductory courses. These courses often cover basic topics such as what PLCs are, how they work, and their various components. You could also dive into some good old-fashioned reading. A book like “Programmable Logic Controllers” by Frank D. Petruzella is a great starting point.

Did you know that PLCs use several different programming languages? The most common one is Ladder Logic, which resembles electrical relay logic diagrams. It’s relatively easy to understand, especially if you’ve got some background in electrical engineering. Other popular languages include Structured Text, Function Block Diagram, and Sequential Function Charts. Don’t let the names intimidate you, these are just different ways to communicate instructions to your PLC. Start with Ladder Logic, as it’s the most widely used and beginner-friendly.

Reading and watching tutorials will only get you so far. To truly learn PLC programming, you need to practice. Many PLC manufacturers offer free or trial versions of their programming software. For instance, Siemens provides a free version of TIA Portal, and Rockwell Automation offers RSLogix Micro Starter Lite. Download one of these software packages and start tinkering! Most of them come with built-in simulators, so you can test your programs without needing actual hardware.

The internet is a treasure trove of PLC programming tutorials. Websites like YouTube, Udemy, and Coursera have countless videos and courses that can guide you through specific projects and problems. Don’t forget to join communities like Reddit’s r/PLC or the PLC subreddit, where you can ask questions, share your progress, and get advice from experienced programmers. Trust me, the support from a community can be a tremendous boost!

Once you’re comfortable with the basics and have written a few simple programs, it’s time to get some real-world experience. If you’re a student, consider doing an internship or a co-op placement with a company that uses PLCs. If you’ve already got a job in the industry, ask if you can shadow an experienced PLC programmer or take on small PLC-related tasks. Nothing beats learning by doing!

Now that you’ve got some knowledge and experience under your belt, why not challenge yourself with some DIY projects? Start small, maybe a basic home automation project, like controlling your garden irrigation system or automating your home lighting. These projects will as well as solidify your skills but also make you more confident in your programming abilities.