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IEC 62541-6-ed.4.0
OPC unified architecture - Part 6: Mappings
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STANDARD published on 23.12.2025
The information about the standard:
Designation standards: IEC 62541-6-ed.4.0
Publication date standards: 23.12.2025
SKU: NS-1253518
The number of pages: 150
Approximate weight : 481 g (1.06 lbs)
Country: International technical standard
Category: Technical standards IEC
The category - similar standards:
Industrial process measurement and controlMultilayer applications
Annotation of standard text IEC 62541-6-ed.4.0 :
IEC 62541-6:2025 specifies the mapping between the security model described in IEC 62541-2, the abstract service definitions specified in IEC 62541-4, the data structures defined in IEC 62541-5 and the physical network protocols that can be used to implement the OPC UA specification. This fourth edition cancels and replaces the third edition published in 2020. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) addition of support for ECC to UA Secure Conversation; b) use of the AuthorityKeyIdentifier extension in Certificate Revocation Lists; c) enhancement of JSON mapping of Unions; d) addition of Decimal data type encoding. e) description of ECC keyUsage rules; f) addition of Media assigned by IANA to UANodeSet definition; g) addition of requirements for user and issuer Certificates; h) addition of rules which specify what happens when DateTime precision is lost; i) addition of rules to allow for the truncation of strings containing embedded nulls. J) definition of a normative string representation for NodeId, ExpandedNodeId and QualifiedName for JSON mapping. k) requirement that TAI times be converted to UTC; l) new possibility to omit Symbol if unknown in JSON encoding; m) addition of fields needed to support RolePermissions to the UANodeSet IEC 62541-6:2025 specifie le mapping entre le modele de securite decrit dans lIEC 62541-2, les definitions de services abstraits specifiees dans lIEC 62541-4, les structures de donnees definies dans lIEC 62541-5 et les protocoles de reseaux physiques qui peuvent etre utilises pour mettre en ouvre la specification OPC UA. Cette quatrieme edition annule et remplace la troisieme edition parue en 2020. Cette edition constitue une revision technique. Cette edition inclut les modifications techniques majeures suivantes par rapport a ledition precedente: a) ajout de la prise en charge de la Conversation securisee ECC vers UA; b) utilisation de lextension AutoriteKeyIdentifier dans les Listes de revocation de certificat; c) amelioration du mapping JSON des Unions; d) ajout du codage du type de donnees Decimal; e) description des regles de KeyUsage ECC; f) ajout des medias attribues par lIANA a la definition de UANodeSet; g) ajout dexigences pour les Certificats dutilisateur et demetteur; h) ajout de regles qui specifient ce quil se passe lorsque la precision DateTime est perdue; i) ajout de regles pour permettre la troncature de chaines contenant des valeurs nulles imbriquees; j) definition dune representation de chaine normative pour NodeId, ExpandedNodeId et QualifiedName pour le mapping JSON; k) exigence de conversion des temps TAI en UTC; l) nouvelle possibilite domission du symbole sil est inconnu dans le codage JSON; m) ajout des champs necessaires a la prise en charge des RolePermissions pour le UANodeSet.
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