The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments and errata) applies.
OPC 10000-1, OPC Unified Architecture - Part 1: Overview and Concepts
http://www.opcfoundation.org/UA/Part1/
OPC 10000-2, OPC Unified Architecture - Part 2: Security Model
http://www.opcfoundation.org/UA/Part2/
OPC 10000-4, OPC Unified Architecture - Part 4: Services
http://www.opcfoundation.org/UA/Part4/
OPC 10000-5, OPC Unified Architecture - Part 5: Information Model
http://www.opcfoundation.org/UA/Part5/
OPC 10000-6, OPC Unified Architecture - Part 6: Mappings
http://www.opcfoundation.org/UA/Part6/
OPC 10000-8, OPC Unified Architecture - Part 8: Data Access
http://www.opcfoundation.org/UA/Part8/
OPC 10000-9, OPC Unified Architecture - Part 9: Alarms and Conditions
http://www.opcfoundation.org/UA/Part9/
OPC 10000-11, OPC Unified Architecture - Part 11: Historical Access
http://www.opcfoundation.org/UA/Part11/
ISO/IEC 10918-1: Information technology – Digital compression and coding of continuous-tone still images: Requirements and guidelines
https://www.iso.org/standard/18902.html
ISO/IEC 15948: Information technology – Computer graphics and image processing – Portable Network Graphics (PNG): Functional specification
https://www.iso.org/standard/29581.html
ISO 639 (all parts): Codes for the representation of names of languages
https://www.iso.org/iso-639-language-codes.html
ISO 3166 (all parts): Codes for the representation of names of countries and their subdivisions
https://www.iso.org/iso-3166-country-codes.html
ISO/IEC/IEEE 60559:2011: Information technology – Microprocessor Systems – Floating-Point arithmetic
https://www.iso.org/standard/57469.html
IETF RFC 5646: Tags for Identifying Languages
http://tools.ietf.org/html/rfc5646
ISO 8601-2000: Data elements and interchange formats
https://www.iso.org/standard/26780.html
Unicode Annex15: Unicode Standard Annex #15: Unicode Normalization Forms
http://www.unicode.org/reports/tr15/
W3C XML Schema Definition Language (XSD) Part 2: DataTypes
http://www.w3.org/TR/xmlschema-2/