Talk:Opc server

What is an historian? The Article mentions it as an OPC-compliant application. I could take a guess that it is some kind of monitoring software that stores the changes that were made to the data. But that is only a guess. Maybe related to OPC Historical Data Access ?

An OPC historian is an application that retrieves data from an OPC server and stores it for later retrieval, often providing an OPC HDA interface to do so, though not always - it can also provide a proprietory interface BananaFiend (talk) 09:23, 9 April 2008 (UTC)

Midas 1.1
Midas (Manufacturing Intelligence and Data Analytics sysetem —Preceding unsigned comment added by 117.192.226.49 (talk) 04:36, 23 March 2011 (UTC)