Plc Programming Ladder Logic
When the plc was invented designers found a way to use the existing knowledge of the relay control system designers for programming the plc.
Plc programming ladder logic. The reason for its popularity is that relay logic diagrams were closely resembled by the ladder logic diagrams. Ladder logic plc programming. Among several programming languages ladder logic diagram is the most basic and simplest form of programming the plc. Before going to program the plc with this language one should know some basic information about it.
Introduction to plc ladder logic programming. Ladder logic is a visual programming language used to program plc s programmable logic controllers. The below figure shows the hardwired ladder diagram wherein the same. Ladder logic plc programming.
As programmable logic controllers became more sophisticated it has also been used in very complex automation systems. The most commonly used plc programming language is the ladder logic diagram. This video is an introduction to what ladder logic is and how it works. If you learn ladder logic programming using allen bradley software and suddenly find the need to program a siemens plc you already know the most important part how to program.
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. You can reuse chunks of a plc program in your own plc program. In this case the plc programming language ladder logic. 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.