FPF Reference

F.1:12.3 Control & actuation with services (operational SLOs in plants)

Preface node heading:f-1-12-3-control-actuation-with-services-operational-slos-in-plants:47842

Content

Unification line. Sys‑CAL + LCA‑CAL (planned) + services/deontics.

Contexts (five Cards).

  1. State‑space control texts — control family; design; controller/plant, feedback.
  2. IEC 61131‑3 — control languages; run; task, program execution.
  3. ISA‑95 — integration family; design; levelled layers, interfaces.
  4. ITIL 4 (2020) — services family; design; SLO/SLA.
  5. SOSA/SSN (2017) — sensing family; run; Observation.

Thinking pay‑off.

  • “Actuation” is recognised as control output (Sys‑CAL), not a service promise.
  • “Incident” (ITIL) is not a plant fault (Sys‑CAL); Contexts deter category errors.