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Description of BS EN IEC 62541-6:2020 2020IEC 62541-6:2020 is available as IEC 62541-6:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.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.
About BSIBSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses. |
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