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 ...

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, ...

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 ...