Standard

BS EN IEC 62541-12:2026

OPC Unified Architecture - Discovery and global services

Current

•

Published:

28 Feb 2026

1 Scope

This part of IEC 62541 specifies how OPC Unified Architecture (OPC UA) Clients and Servers interact with DiscoveryServers when used in different scenarios. It specifies the requirements for the LocalDiscoveryServer, LocalDiscoveryServer-ME and GlobalDiscoveryServer. It also defines information models for Certificate management, KeyCredential management and AuthorizationServices.

Annex A informatively discusses deployment and configuration aspects.

Annex B defines NodeSet and numeric NodeIds.

Annex F provides installation rules for the LDS.

Annex H compares the Certificate management defined in this document with IETF RFC 7030.

Product Details

Descriptors

Bus networks

Automatic control systems

Information exchange

Objects (programming language)

Industrial

Data processing

Interfaces (data processing)

Process control

Data transmission

Communication networks

Computer networks

Computer software

ICS Codes

25.040.40 Industrial process measurement and control

Committee

GEL/65/5

International relationships

Identical to:

IEC 62541-12:2025

EN IEC 62541-12:2026

ISBN

978 0 539 29828 4

Publisher

BSI