Based on TIA PORTAL V20, released in 2025, it is the most up-to-date textbook at the date of release, which deals with the second generation Siemens CPUs, the 1214C G2. This book was specifically written for school introduction at technical institutes or vocational training around the world. The topics covered are updated to the year 2025 for a direct introduction into the world of work. While not neglecting the theoretical explanations, it presents simple and widely used automations, for example the automatic gate of homes. There are clear examples well exposed starting from the mechanical diagram, the functional diagram and the segment by segment explanation of the step 7 code integrated in the latest version of TIA PORTAL. A new layout and numerous footnotes make the readability very smooth and pleasant. Exhaustive introduction on the basic techniques for Safety.