If you're familiar with industrial automation, you probably know that Programmable Logic Controllers (PLCs) are industrial computers that can be programmed to perform specific tasks in industrial environments. To interact with them, you need to know how to program PLCs. PLC programming is a ...
First and foremost, you need to get your very own PLC to work with. Computer programming of any kind is not a spectator sport, and can only be learned by a significant investment of time and effort at the keyboard. In many ways, learning to program is like learning a new spoken or wr...
PLC Programming was based on Relay Logic, and Relay Logic was based on—well, the fundamentals of logic. Logic circuits are digital, so they produce outputs that arediscretein nature. This means that it’s either “True or False”, “High or Low”, “Yes or No”, “0 or 1”. Nothin...
PLC programming is one of the most popular skills among automation engineers. With this skill, automation engineers can communicate with PLCs and tell them how to interact with sensors and actuators on the factory floor. So, to be able to communicate with a PLC, you first need to know the...
IO-Link Programming Example Once the master and device have been installed, the next step is integration into the PLC program. For this how-to example, assume a Rockwell CompactLogix PLC is controlling a small variety of discrete sensors and several IO-Link compatible field devices. An appropriat...
picture 1. Add PLC to our project. As you can from the PLC we just added, the PLC already has some centralized IOs, but in this article, we assume that we have a part of the machine that is far away and I need to connect to thePLC, in that case, we would use a Distributed IO...
Don’t touch that PLC code! You know all about good PLC programming practices. You’re always careful to include comments to all the logic, good descriptive tag names for variables, and an accurate map of all the system I/O, right? What about that old PLC-5® that went into service...
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• Avoiding repeated and boring programming. • The sequence of the code. • Does my code help the PLC itself to operate with all of its power? • If we are back again, is it easy to modify? So, organizing the code is very important for suchDCS systemsor other complex plants ...
Scratch, as mentioned, is a programming tool that was built as a free-to-use way to teach young people to work with code. The idea was to offer a visually engaging platform that creates an end result that can be enjoyed while learning the basics of coding along the way. ...