Plc Block Diagram Ppt. A function block is a program instruction unit that when executed yields one or more output values. Programmable logic controller 2.
The central processing unit is heart of plc. A simplified block diagram of a plc shown in above fig. It is well suited to express combinational logic.
Whatever supply is given to com point when output is high then that s supply com supply comes out from output point.
Programming languages of plc most common languages encountered in plc programming are. Plc based automatic dam shutter control system with block diagram project report documentation synopsis and dam shutter control system ppt. It is represented by a block as shown below. Plc basic sankar kanagaraj.
