Process Control Systems (PCS) are distributed control systems (DCS)that are specialized to meet the requirements of the processindustries. Many processes and plants of that domain have high safetyand availability requirements, are instrumented with a large number ofsensors and actuators and show a rather high degree of automation atleast in standard operation regimes. There are remarkable differencesand cross-discipline interdependencies between chemical-physicalproperties of the substances, prodedures, unit operations, equipment,instrumentation and control strategies. This results in the observationthat there hardly any two plants that are identical, even if theproducts are interchangeable. Thus, it is not surprising, that there isan ongoing discussion if each domain of the process industries, namelychemicals, pharma, pulp & paper, oil & gas, food & beverages andwater/waste water treatment should have its own specialized automationsystem. On the contrary, there are some opinions that PCS architecturesthat address all of the distinct requirements of the processindustries, should even be generic enough to render the distinctionbetween PCS and e.g. DCS for power generation and distribution a merelymarketing or historical issue, not a technical one. This text bookcontributes towards that discussion simply by putting its focus on PCSengineering basics that are common to the different domains of theprocess industries. The examples and exercises are related to anexperimental research plant which serves for the exploration of theinteraction between process modularization and process automationmethods in the process industries. This makes it possible to capturefeatures of highly specialized and integrated mono-product plants (e.g.chemicals) as well as application areas which are dominated by locallystandardized general-purpose apparatus and multi-product schemes(bio-chemistry, pharma). While the theory presented in this text bookis applicable for all of the PCS of the different established vendors,the examples as well as most of the screen shots refer to PCS 7,Siemens’ control system for the process industries. Focusing on asingle PCS makes it possible to use this text book not only in basiclectures on PCS Engineering but also in computer lab courses that allowstudents gaining hands-on experience.