Pages with tag DNP3

Learn about MODBUS, DNP3, SCADA technologies used for electrical system control

One area where the MODBUS, DNP3 protocols, and SCADA methodologies, are used is in electrical system devices. MODBUS is a communications protocol widely used for industrial machines, in which a device exposes its current status as "registers" which can be queried over a MODBUS connection, and its current behavior can be modified by storing values in some of those registers. DNP3, a.k.a. Distributed Network Protocol, a.k.a. IEEE 1858, is a set of communications protocols used between components in process automation systems. SCADA, a.k.a. "Supervisory control and data acquisition", is a control system architecture that uses computers, networked data communications and graphical user interfaces for high-level process supervisory management, along with other peripheral devices such as programmable logic controllers and discrete PID controllers to interface to the process plant or machinery.