(redirected from Distributed Network Protocol) Also found in: Acronyms.
(Distributed Network Protocol 3) A data link layer 2 protocol used in SCADA systems mostly in the electrical and water distribution industries. It provides the packet transmission between remote sensors and the SCADA control center. DNP3 is part of the IEEE 1379-2000 standard for best practices in SCADA communications. See SCADA, ICCP and data link protocol.