Plc Block Diagram. The central processing unit is the heart of the plc system. The input device provides a signal to an input module.
Block diagram of plc. Block diagram plc input output modules in the following block diagram input and output modules are connected through the brain of plc i e. This input module is connected with the cpu for the initial automated processes.
It can be either digital or analog.
The block diagram of programming logic controller plc is shown in above figure. 1 ladder diagrams. Plc function block diagram allows to put functions written with many lines of code into graphical boxes so you can easily connect them to make a bigger plc program. What fbd offers is a way to put functions written with many lines of code into boxes.
