====== IEC 62541-014 OPC Unified Architecture - Part 14: PubSub ======
[[dido:public:ra:xapend:xapend.b_stds:tech:iec:start| return to the IEC Standards ]]

<table>
<caption>Data sheet for OPC Unified Architecture - Part 14: PubSub</caption>
| Title                      | OPC Unified Architecture - Part 14: PubSub |
| Version                    | 2020|
| Document Number            | 62541-14|
| Release Date               | 2020  |
| Reference                  | [[https://webstore.iec.ch/publication/61108]] |
</table>

  : **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 62541-14:2020 defines the OPC Unified Architecture (OPC UA) PubSub communication model. It defines an OPC UA publish subscribe pattern which complements the client server pattern defined by the Services in [[dido:public:ra:xapend:xapend.b_stds:tech:iec:62541-4]]. [[dido:public:ra:xapend:xapend.b_stds:tech:iec:62541-1]] gives an overview of the two models and their distinct uses.
PubSub allows the distribution of data and events from an OPC UA information source to interested observers inside a device network as well as in IT and analytics cloud systems.

This document consists of
  * a general introduction of the [[dido:public:ra:xapend:xapend.a_glossary:p:publish-subscribe | Publish-Subscribe (PubSub) ]] concepts,
  * a definition of the PubSub configuration parameters,
  * mapping of PubSub concepts and configuration parameters to messages and transport protocols, and
  * a PubSub configuration model.

Not all OPC UA Applications will need to implement all defined message and transport protocol mappings. [[dido:public:ra:xapend:xapend.b_stds:tech:iec:62541-7]] defines the Profile that dictates which mappings need to be implemented in order to be compliant with a particular Profile.

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:62541-12]]
  * [[dido:public:ra:xapend:xapend.b_stds:tech:iec:62541-13]]
  * [[dido:public:ra:xapend:xapend.b_stds:tech:iec:62541-100]]

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