.. _Clients_to_Server_Tutorial:

===================
Third Party Clients
===================

In this tutorial we will show how to use third party OPC-UA clients when connecting to our OPC UA server.

We use the OPC URL opc.tcp://localhost:4841 in the following tutorial. This URL is the one exported by the `Demo Server <https://github.com/RealTimeLogic/OPC-UA-Examples/tree/master/servers/server>`_.

You may connect to the OPC-UA Demo Server with any OPC-UA client.
We are using the following clients in this tutorial:

  * `UAExpert <https://www.unified-automation.com/downloads/opc-ua-clients.html>`_
  * `ProSys OPCUA Client <https://www.prosysopc.com/products/opc-ua-browser>`_
  * `dataFeed OPCUA client <https://data-intelligence.softing.com/us/products/datafeed-opc-sdks/opc-ua-demo-client/>`_

UAExpert
--------

After starting UAExpert, click on the plus icon button.

.. image:: images/uaexpert0.png

Double click on “Double click to Add Server” in the popup window.

.. image:: images/uaexpert1.png

Enter endpoint URL ‘opc.tcp://localhost:4841’ and click OK.

.. image:: images/uaexpert2.png

Expand the subtree under endpoint URL, select ‘None – None’ and click OK.

.. image:: images/uaexpert3.png

The left pane shows the OPC-UA server name.
Connect to the OPC-UA server by clicking on the connect icon as shown in the following screenshot.

.. image:: images/uaexpert4.png


The address space is shown in the left pane after connecting.
The right pane and the upper pane shows attributes of selected node.

.. image:: images/uaexpert5.png



ProSys OPCUA
------------

Start the ProSys OPCUA client application. Enter Endpoint URL and click
on the arrow icon.

.. image:: images/prosys1.png

The following screenshot show the popup that appears after clicking the arrow icon. Select security mode 'None' and security policy 'None'. Click OK.

.. image:: images/prosys2.png


The address space is shown in the left pane after connecting.  The
middle pane shows attributes of selected node and the right pane
shows references of selected node.

.. image:: images/prosys3.png


dataFEED OPCUA
--------------

Start the dataFEED OPCUA client

.. image:: images/datafeed1.png

Double click to add session. Add the following Endpoint URL in the popup window:
'opc.tcp://localhost:4841' and click OK.

.. image:: images/datafeed2.png

After connecting, the middle pane shows the Address Space tree and the left pane shows the attributes
of the selected node.

.. image:: images/datafeed3.png