.. _Store:

Store
=====

A few settings determine weither data values for a variable should be logged into the time-series database (TSDB) or not. By default they are all set to enable logging.

* Field ``Active`` in the ``OPC UA Server node settings`` dialog window should be checked. This dialog window can be opened by selecting server's node in the ``Address Space`` panel and clicking on ``Edit`` button. 

.. image:: /images/EditServerActiveField.png

* Setting in the column ``Log to TSDB`` of the ``Logged Variables`` table should be checked.

.. image:: images/LogToTSDB.png

For those variables for which all these conditions met, *ogamma* Visual Logger for OPC creates subscriptions and monitored items on OPC UA Server, and writes received data changes to the TSDB.