We briefly touched on the connections between the points of the Pentagon Power in our discussions of sensors, amplifiers, PLCs, and PID controllers. In this chapter we are going to dig deep into the digital networks that can be used to connect the five points. There are some esoteric details in this chapter, but you don’t need to absorb them all. If you are looking for nitty gritty details, this chapter should whet your appetite. But if there is more detail than you can process in one reading, skip the sections that feel intimidating. You can come back when you need a deeper understanding. I aim to cover the physical implementations and defining characteristics of the most popular network protocols. The strengths ...
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