Means

http://premon.fbk.eu/resource/fn17-change_operational_state@means an entity of type: Concept

An action done by the Agent in order to cause the Device to being to operate. He activated the machine by pulling the lever.
xsd:dateTime 2013-05-02T13:01:25+02:00 
Means 
xsd:int 15910 

data from the linked data cloud