SCADA Protocols
Structured references, message format diagrams, ASDU / APDU tables, and frame decoders for the protocols you work with every day in substations and control rooms.
DNP3
Distributed Network Protocol 3 (IEEE 1815) — event-driven SCADA protocol for electric utilities, water, and oil & gas with secure authentication.
IEC 60870-5-104
IEC 60870-5-104 — TCP/IP-based telecontrol protocol for electrical transmission and distribution networks with balanced ASDU models.
IEC 60870-5-101
IEC 60870-5-101 — Serial (RS-232/RS-485) telecontrol base standard with balanced and unbalanced transmission modes for RTU communication.
Modbus
Modbus — Universal serial (RTU/RS-485) and Ethernet (TCP/MBAP, port 502) SCADA communication protocol for PLCs, RTUs, sensors, and industrial field devices.
IEC 61850
IEC 61850 — Substation automation standard covering GOOSE, Sampled Values, MMS, SCL configuration, and PTP time synchronization.