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.

IEC 61508 (all parts), Functional safety of electrical/electronic/programmable electronic safety-related systems

https://www.iec.ch/functionalsafety/standards/

IEC 61784 3:2017, Industrial communication networks – Profiles – Part 3: Functional safety fieldbuses – General rules and profile definitions

https://webstore.iec.ch/publication/61165/

" https://webstore.iec.ch/publication/61165/

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

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 Unified Architecture - Part 9: Alarms and Conditions

DOCPROPERTY Part9URL \* MERGEFORMAT http://www.opcfoundation.org/UA/Part9/

OPC 10000-10, OPC Unified Architecture - 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 10000-12, OPC Unified Architecture - Part 12: Discovery and Global Services

DOCPROPERTY Part12URL \* MERGEFORMAT http://www.opcfoundation.org/UA/Part12/

OPC 10000-13, OPC Unified Architecture - Part 13: Aggregates

DOCPROPERTY Part13URL \* MERGEFORMAT http://www.opcfoundation.org/UA/Part13/

OPC 10000-14, OPC Unified Architecture - Part 14: PubSub

DOCPROPERTY Part14URL \* MERGEFORMAT http://www.opcfoundation.org/UA/Part14/

OPC 10000-15, OPC Unified Architecture - Part 15: Safety

DOCPROPERTY Part15URL \* MERGEFORMAT http://www.opcfoundation.org/UA/Part15/

OPC 10000-16, OPC Unified Architecture - Part 16: State Machines

DOCPROPERTY Part16URL \* MERGEFORMAT http://www.opcfoundation.org/UA/Part16/

OPC 10000-17, OPC Unified Architecture - Part 17: Alias Names

DOCPROPERTY Part17URL \* MERGEFORMAT http://www.opcfoundation.org/UA/Part17/

OPC 10000-18, OPC Unified Architecture - Part 18: User Authorization

DOCPROPERTY Part18URL \* MERGEFORMAT http://www.opcfoundation.org/UA/Part18/

OPC 10000-19, OPC Unified Architecture - Part 19: Dictionary References

DOCPROPERTY Part19URL \* MERGEFORMAT http://www.opcfoundation.org/UA/Part19/

OPC 10000-20, OPC Unified Architecture - Part 20: File Transfer

DOCPROPERTY Part20URL \* MERGEFORMAT http://www.opcfoundation.org/UA/Part20/

OPC 10000-21, OPC Unified Architecture - Part 21: Device Onboarding

DOCPROPERTY Part21URL \* MERGEFORMAT http://www.opcfoundation.org/UA/Part21/

OPC 10000-22, OPC Unified Architecture - Part 22: Base Network Model

DOCPROPERTY Part22URL \* MERGEFORMAT http://www.opcfoundation.org/UA/Part22/

OPC 10000-23, OPC Unified Architecture - Part 23: Common ReferenceTypes

DOCPROPERTY Part23URL \* MERGEFORMAT http://www.opcfoundation.org/UA/Part23/

OPC 10000-24, OPC Unified Architecture - Part 24: Scheduler

DOCPROPERTY Part24URL \* MERGEFORMAT http://www.opcfoundation.org/UA/Part24/

X.509, X.509 Public Key Certificate Infrastructure

https://www.itu.int/rec/T-REC-X.509