This manual provides a complete overview of programming with STEP 7. It is designed to support you when installing and commissioning the software. It explains how to proceed when creating programs and describes the components of user programs. The manual is intended for people who are involved in carrying out control tasks using STEP 7 and SIMATIC S7 automation systems. We recommend that you familiarize yourself with the examples in the manual "Working with STEP 7 , Getting Started." These examples provide an easy introduction to the topic "Programming with STEP 7.".