OPC 10000-1, OPC Unified Architecture - Part 1: Overview and Concepts

OPC 10000-3, OPC Unified Architecture - Part 3: Address Space Model

OPC 10000-5, OPC Unified Architecture - Part 5: Information Model

OPC 10000-7, OPC Unified Architecture - Part 7: Profiles

OPC 10000-100, OPC Unified Architecture – Part 100: Devices

IEC 62714-1:2014, Engineering data exchange format for use in industrial automation systems engineering - Automation markup language - Part 1: Architecture and general requirements

IEC 62714-2:2015, Engineering data exchange format for use in industrial automation systems engineering - Automation markup language - Part 2: Role class libraries

IEC 62714-3, Engineering data exchange format for use in industrial automation systems engineering - Automation markup language - Part 3: Geometry and kinematics

IEC 62714-4, Engineering data exchange format for use in industrial automation systems engineering - Automation markup language - Part 3: Logic and behavior

IEC 62264-1: 2013, Enterprise-control system integration - Part 1: Models and terminology (similar to ANSI ISA 95)

IEC 61512-1:1997, Batch control - Part 1: Models and terminology (similar to ANSI ISA 88)

IEC 62424:2008, Representation of process control engineering - Requests in P&I diagrams and data exchange between P&ID tools and PCE-CAE tools