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This manual provides you with an overview of the system functions, organization blocks, and loadable standard functions available in S7, and detailed interface descriptions for their use in your programs.

System Software for S7-300 and S7-400 System and Standard Functions Reference Manual - The S7 CPUs have integrated system functions and organization blocks included with their operating system, which you can use when programming.

If you’re more comfortable with Ladder Logic or Function Block Diagram then start there but sooner or later you’ll have to become familiar with Statement List. You only require one language type for programming an S7-300/S7-400, but you can mix the languages within a project, if required.

Statement List, Ladder Logic, and Function Block Diagram Reference Manuals - These manuals contain both the user’s guide and the reference description of the programming language or representation type.

Configuring Hardware and Communication Connections STEP 7 Manual - Everything to do with the Hardware Configurator.

Programming with STEP 7 Manual - Here’s the fuller manual for the programming interface which is also the same as the online help accessed by pressed the F1 key.

While it’s not the complete picture it does ease you very well into the learning curve of the Step 7 software.

Working with STEP 7 - This is a basic introduction to Step 7 which walks through an example of controlling engines.

Hard copies can be ordered with number 6ES7810-4CA08-8BW1.

Once you install the Step 7 software there will be a directory under the SIMATIC folder called Documentation that includes the most important manuals. Where to Start? Manuals, manuals, everywhere! The best thing for this is the sales catalog (ST 70 – 2005). Getting used to part numbers and product groupings can go a long way with your comfort level. The first thing I like to do with a new product is get an overview of everything. There are differences between the regular version of Step 7 and Step 7 Lite but for learning purposes you can go along way with the free Lite version.

Download a free working copy of Step 7 Lite.

Order the demo CD which will give you a free 30-day trial period.

If you are just learning and can’t easily get the software then there are two options. Of course the best type of training is the hands on type but if that’s not an option then you’ll need to start digging in.

So we’ll look at the essentials for your journey. There’s a lot of different stuff there thrown together and found in different spots with very long URL addresses to add to the confusion. From a new users perspective I’ve only heard disparaging comments about finding the right information on the Siemens’ website. This is a listing of tutorials and manuals found on the Siemens automation website that will get you started on the SIMATIC Step 7 software for S7-300 and S7-400 systems.