This textbook provides a solid foundational knowledge and comprehensive practical skills in PLC programming. Numerous exercises help deepen the understanding of the material. With the accompanying simulation software and sample solutions, the acquired knowledge can be applied immediately. The knowledge of number systems and digital technology conveyed in the book is an important prerequisite for proficient and skillful PLC programming. The programming language used, "Instruction List according to IEC 61131-3," offers excellent insights into the functioning of a PLC. The didactically prepared programming examples for relay circuits, signal storage, timing functions, counters, function blocks and functions, program structures, control sequences, data types, and much more enable systematic learning.