## Introduction

Now that we have covered ladder logic instructions, it is time to go beyond instructions. Now is the time to see what we can achieve with these instructions. What kind of complex problems we can solve.

Now is the time where we start implementing the knowledge of ladder logic instructions and use some of the most common programming tricks and solve many of the problems a PLC programmer can face.

In order to show the use of ladder logic instructions we will cover a bottle filling process and follow it step by step. This will help understand and enforce our knowledge of Ladder Logic. The picture below is the final look of how the bottle process looks like. The main purpose of this application is to expose you to many tricks a PLC programmer should know and master.

In the next section we will describe the simplified version of Bottle filling application., start to build it pieces by pieces. This will help you understand the basics and take you one step further. I will make you see how an application is organized and partitioned. This simple process covers many of the tricks used by most advanced programmers.