This PLC basic course explains the logic control with the SIMATIC S7-300. For all programming examples from the pratice, also a solution is provided. This book is suitable for trade schools, technical colleges and others, as well as for private study. It contains:- Arrangement and functioning of a PLC- Program processing and programming- Logic operations and program input- Momentary impulses, timing functions, clock generators, counters, comparators- Practical examples with simulators- Sequence control systems- Safety Regulations- Appendix with solutions