F.1:5.1.3 - Control, actuation, and services

Control-theory sources, IEC 61131-3, ISA-95, ITIL 4, and SOSA/SSN can contribute different claims about controller design, program execution, integration, service commitments, and observations. A current question may need only a subset. Actuation is not a service promise, and incident is not a plant fault merely because the words occur near operational work.