In my last post on PLC Memory Organization, I mentioned that I had not really covered how scanning actually works in a programmable controller. This is certainly a topic that needs to be discussed for an understanding of PLC programming,. Ladder Logic 105: PLC Scanning Read More ». We will look at these scan items with particular attention to how the ladder logic program is executed. Let's get started.
Understanding how scanning works in a programmable logic controller (PLC) is something that needs to be addressed for a user regardless of the program being used.. How Does Ladder Logic Scan Work? PLC Guide June 12, 2025 21 minutes read