Summary

In this chapter, we built an introductory functional lab, where we can develop logic inside our PLC and connect to real-world inputs and outputs to see how things react to certain environmental tests. This helps relay a fundamental understanding of how industrial systems operate and work. Building on these core concepts allows us to extend our lab to more complex scenarios. We used the engineering software to force inputs, and then we replicated the same behavior remotely with mbtget to convey how easy it is to change a simple on/off input on a controller.

Imagine what other industry processes operate this way, such as opening and closing valves on a water plant or opening a valve on a lye, also known as a sodium hydroxide, holding tank, and allowing it to flow into water treatment units, similar to the Florida City Water Supply hack on February 5, 2021. However, the Florida City Water Supply hack is more complex as it involved changing a concentration amount on an operator...