OPC unified architecture - Part 12: Discovery and global services
文件核验信息（付费前可核对）
标准范围（官方英文摘要）
IEC 62541-12:2025 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.
This second edition cancels and replaces the first 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 a "Quantity Model" which can be referenced from EngineeringUnit Properties. The model defines quantities and assigned units. In addition it provides alternative units and the conversion to them;
b) addition of rules for ValuePrecision Property:
？ can also be used for other subtypes like Duration and Decimal.
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标准信息
- 标准号
- IEC 62541-12:2025
- 英文标题
- OPC unified architecture - Part 12: Discovery and global services
- 发布单位
- —
- 技术委员会
- TC 65/SC 65E
- 版本 / 版次
- 2.0
- 状态
- 现行
- 发布日期
- 2025
- ICS 分类
- 25.040.40 工业过程的测量和控制
- 页数
- 148 页
- 官方定价
- CHF 430
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