INTRODUCTIONLogo is something that is perfectly suited for creating and implementing simple automation tasks in the industrial world along with all sorts of building management system. Logo system is something through which one can solve any simple control task. By using the expansion modules logo, one can able to control the most complicated control task in a simple manner without facing any problem. A verity of components usually makes it possible to individually enlarge logo to 24 digital input, 16 digital outputs, 8 analog inputs and 2 analog outputs. It is using for easy expansion by means of a text display or expansion units for a trustworthy solution. Siemens logo digital output modul...