About: http://webisa.webdatacommons.org/437376996

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	At the bottom of the control chain is the fieldbus which links the PLC???s to the components which actually do the work such as sensors, actuators, electric motors, console lights, switches, valves and contactors.
http://www.w3.org/ns/prov#wasQuotedFrom	danfoss.com