Rung 6 in the Fig. 1 ladder diagram program shows an example of a function block that is used to send data over a network. Summary. As PLCs are applied to increasingly complicated tasks, and as people ...

D. Function and Function blocks. These are the basic building blocks, containing a data-structure and an algorithm. For our study example, 1) The required function blocks are. • ReadAnalogIn. In any ...

This program flow nature of Sequential Function Chart is why it’s so often used. “It’s great for stepped or discrete sequencing. A classic example would be a batching engine where you might have, say, ...