IEC 62541-6:2020

IEC 62541-6:2020

July 2020
International standard Current

OPC Unified Architecture - Part 6: Mappings

IEC 62541-6:2020 specifies the OPC Unified Architecture (OPC UA) mapping between the security model described in IEC TR 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 third edition cancels and replaces the second edition published in 2015. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:a) Encodings:? added JSON encoding for PubSub (non-reversible);? added JSON encoding for Client/Server (reversible);? added support for optional fields in structures;? added support for Unions.b) Transport mappings:? added WebSocket secure connection ? WSS;? added support for reverse connectivity;? added support for session-less service invocation in HTTPS.c) Deprecated Transport (missing support on most platforms):? SOAP/HTTP with WS-SecureConversation (all encodings).d) Added mapping for JSON Web Token.e) Added support for Unions to NodeSet Schema.f) Added batch operations to add/delete nodes to/from NodeSet Schema.g) Added support for multi-dimensional arrays outside of Variants.h) Added binary representation for Decimal data types.i) Added mapping for an OAuth2 Authorization Framework.

Main informations

Collections

International IEC standards

Publication date

July 2020

Number of pages

237 p.

Reference

IEC 62541-6:2020
Sumary
OPC Unified Architecture - Part 6: Mappings

IEC 62541-6:2020 specifies the OPC Unified Architecture (OPC UA) mapping between the security model described in IEC TR 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 third edition cancels and replaces the second edition published in 2015. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) Encodings:
? added JSON encoding for PubSub (non-reversible);
? added JSON encoding for Client/Server (reversible);
? added support for optional fields in structures;
? added support for Unions.
b) Transport mappings:
? added WebSocket secure connection ? WSS;
? added support for reverse connectivity;
? added support for session-less service invocation in HTTPS.
c) Deprecated Transport (missing support on most platforms):
? SOAP/HTTP with WS-SecureConversation (all encodings).
d) Added mapping for JSON Web Token.
e) Added support for Unions to NodeSet Schema.
f) Added batch operations to add/delete nodes to/from NodeSet Schema.
g) Added support for multi-dimensional arrays outside of Variants.
h) Added binary representation for Decimal data types.
i) Added mapping for an OAuth2 Authorization Framework.
Replaced standards (1)
IEC 62541-6:2015
March 2015
International standard Cancelled
OPC unified architecture - Part 6: Mappings

IEC 62541-6:2015 specifies the OPC Unified Architecture (OPC UA) mapping between the security model described in IEC TR 62541-2, the abstract service definitions, described 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 second edition cancels and replaces the first edition published in 2011 and constitutes a technical revision. This edition includes the following changes: - A new HTTPS transport has been defined; - Added an additional padding byte to handle asymmetric key sizes larger than 2048 bits. Fixed errors in SOAP action URIs; - Needed a standard way to serialize nodes in an address space. Added the UANodeSet schema defined in Annex F.

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