.. _user/protocols/opcua/index:

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OPC UA
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OPC UA (**O**\pen **P**\latform **C**\ommunications **- U**\nified
**A**\rchitecture) is a machine-to-machine (M2M) communication protocol
developed by the `OPC Foundation <https://opcfoundation.org/>`_. It is widely
used for communication with industrial equipment and systems for data collection
and control.

.. toctree::
  opcuaClient
  opcuaServer
  opcuaObjectType
  opcuaReferenceType
  :maxdepth: 1