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 Unified Architecture - Part 2: Overview and Concepts
DOCPROPERTY Part1URL \* MERGEFORMAT http://www.opcfoundation.org/UA/Part1/
OPC 10000-2, OPC Unified Architecture - Part 2: Security Model
DOCPROPERTY Part2URL \* MERGEFORMAT http://www.opcfoundation.org/UA/Part2/
OPC 10000-3, OPC Unified Architecture - Part 3: Address Space Model
DOCPROPERTY Part3URL \* MERGEFORMAT http://www.opcfoundation.org/UA/Part3/
OPC 10000-4, OPC Unified Architecture - Part 4: Services
DOCPROPERTY Part4URL \* MERGEFORMAT http://www.opcfoundation.org/UA/Part4/
OPC 10000-5, OPC Unified Architecture - Part 5: Information Model
DOCPROPERTY Part5URL \* MERGEFORMAT http://www.opcfoundation.org/UA/Part5/
OPC 10000-6, OPC Unified Architecture - Part 6: Mappings
DOCPROPERTY Part6URL \* MERGEFORMAT http://www.opcfoundation.org/UA/Part6/
OPC 10000-7, OPC Unified Architecture - Part 7: Profiles
DOCPROPERTY Part7URL \* MERGEFORMAT http://www.opcfoundation.org/UA/Part7/
OPC 10000-8, OPC Unified Architecture - Part 8: Data Access
DOCPROPERTY Part8URL \* MERGEFORMAT http://www.opcfoundation.org/UA/Part8/
OPC 10000-9, OPC UA Specification: Part 9 – Alarms & Conditions
DOCPROPERTY Part9URL \* MERGEFORMAT http://www.opcfoundation.org/UA/Part9/
OPC 10000-10, OPC UA Specification: Part 10 - Programs
DOCPROPERTY Part10URL \* MERGEFORMAT http://www.opcfoundation.org/UA/Part10/
OPC 10000-11, OPC Unified Architecture - Part 11: Historical Access
DOCPROPERTY Part11URL \* MERGEFORMAT http://www.opcfoundation.org/UA/Part11/
OPC 10000-13, OPC Unified Architecture - Part 13: Aggregates
DOCPROPERTY Part13URL \* MERGEFORMAT http://www.opcfoundation.org/UA/Part13/
ISA-TR88.00.02-2015: Machine and Unit States: An implementation example of ANSI/ISA-88.00.01
ANSI/ISA–88.01–1995: Batch Control Part 1: Models and Terminology
https://www.isa.org/store/products/product-detail/?productId=116649
OPC 30000, UA companion specification for IEC61131-3