Definition(s)
DCS
Distributed control system.
Source: API SPEC 17F, Specification for Subsea Production Control Systems, Second Edition, December 2006 (Reaffirmed April 2011). Global Standards
Source: ANSI/ISA–99.00.01–2007, Security for Industrial Automation and Control Systems, Part 1: Terminology, Concepts, and Models, 29 October 2007. National Standard
DCS
Drilling control system.
Source: NORSOK D-001, Drilling facilities, Rev. 3, December 2012. Global Standards