Plc Programming Ladder Logic

This video is an introduction to what ladder logic is and how it works.

Plc programming ladder logic.

In this case the plc programming language ladder logic. The great thing about ladder logic is that it s much more visual than most programming languages so people often find it a lot easier to learn. Part 1 of 2 more videos are available. Among several programming languages ladder logic diagram is the most basic and simplest form of programming the plc.

Ladder logic is a visual programming language used to program plc s programmable logic controllers. The most commonly used plc programming language is the ladder logic diagram. Ladder logic is widely used to program plcs where sequential control of a process or manufacturing operation is required ladder logic is useful for simple but critical control systems or for reworking old hardwired relay circuits. Before going to program the plc with this language one should know some basic information about it.

The reason for its popularity is that relay logic diagrams were closely resembled by the ladder logic diagrams. The below figure shows the hardwired ladder diagram wherein the same. In fact reusable code is widely used and many automation projects are build on the isa 88 or s88 batch control standard which encourages reusable function blocks. When the plc was invented designers found a way to use the existing knowledge of the relay control system designers for programming the plc.

You can reuse chunks of a plc program in your own plc program. Introduction to plc ladder logic programming. One of the best visual programming languages is a plc programming language called ladder logic or ladder diagram ld. As programmable logic controllers became more sophisticated it has also been used in very complex automation systems.