The following referenced documents are indispensable for the application of this standard. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
OPC 10000-1, OPC UA Specification – Part 1: Overview and Concepts
http://www.opcfoundation.org/documents/10000-1/
OPC 10000-3, OPC Unified Architecture - Part 3: Address Space Model
http://www.opcfoundation.org/documents/10000-3/
OPC 10000-4, OPC Unified Architecture - Part 4: Services
http://www.opcfoundation.org/documents/10000-4/
OPC 10000-5, OPC Unified Architecture - Part 5: Information Model
http://www.opcfoundation.org/documents/10000-5/
OPC 10000-6, OPC Unified Architecture - Part 6: Mappings
http://www.opcfoundation.org/documents/10000-6/
OPC 10000-7, OPC Unified Architecture - Part 7: Profiles
http://www.opcfoundation.org/documents/10000-7/
OPC 10000-16, OPC Unified Architecture - Part 16: State Machines
http://www.opcfoundation.org/documents/10000-16/
ISA-95 Part 3: ANSI/ISA-95.00.03-2013 (IEC 62264-3 Modified) Enterprise-Control System Integration - Part 3: Activity Models of Manufacturing Operations Management
https://www.isa.org/products/ansi-isa-95-00-03-2013-enterprise-control-system-i