====== IEC 62541-012 OPC Unified Architecture - Part 12: Discovery and global ======
[[dido:public:ra:xapend:xapend.b_stds:tech:iec:start| return to the IEC Standards ]]
Data sheet for OPC Unified Architecture - Part 12: Discovery and global
| Title | OPC Unified Architecture - Part 12: Discovery and global |
| Version | 2020|
| Document Number | 62541-12|
| Release Date | 2020 |
| Reference | [[https://webstore.iec.ch/publication/29087]] |
: **Note**: The following is an excerpt from the official IEC catalog. It is provided here as a convenience and is not authoritative. Refer to the original document as the authoritative reference.
===== Abstract =====
IEC 62541-12:2020 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''**
* **''GlobalDiscoveryServer''**
It also defines information models for **''Certificate''** management, **''KeyCredential''** management and Authorization Services.
See also:
* [[dido:public:ra:xapend:xapend.b_stds:tech:iec:62541-1]]
* [[dido:public:ra:xapend:xapend.b_stds:tech:iec:62541-2]]
* [[dido:public:ra:xapend:xapend.b_stds:tech:iec:62541-3]]
* [[dido:public:ra:xapend:xapend.b_stds:tech:iec:62541-4]]
* [[dido:public:ra:xapend:xapend.b_stds:tech:iec:62541-5]]
* [[dido:public:ra:xapend:xapend.b_stds:tech:iec:62541-6]]
* [[dido:public:ra:xapend:xapend.b_stds:tech:iec:62541-7]]
* [[dido:public:ra:xapend:xapend.b_stds:tech:iec:62541-8]]
* [[dido:public:ra:xapend:xapend.b_stds:tech:iec:62541-9]]
* [[dido:public:ra:xapend:xapend.b_stds:tech:iec:62541-10]]
* [[dido:public:ra:xapend:xapend.b_stds:tech:iec:62541-11]]
* [[dido:public:ra:xapend:xapend.b_stds:tech:iec:62541-13]]
* [[dido:public:ra:xapend:xapend.b_stds:tech:iec:62541-14]]
* [[dido:public:ra:xapend:xapend.b_stds:tech:iec:62541-100]]
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