PLC based 4 Way Traffic Light Control System
We most often come across four way traffic jam in our city. This PLC ladder logic gives the solution to control city traffic using programmable logic control. 4 Way Traffic
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Mis-conceptions of PLC Ladder Logic
Perhaps the most important yet elusive concept to grasp when learning to program PLCs is the relationship between the electrical status of the PLC’s I/O points and the status of
PLC Memory Mapping and I/O addressing
A wise PLC programmer once told me that the first thing any aspiring programmer should learn about the PLC they intend to program is how the digital memory of that
PLC Ladder Logic Example
This topic is a continuous to Relays in Ladder Logic Article. Click here to Read the Previous Article. Here, we will emulate the exact same high-pressure alarm circuit using an