OPC Classic
OPC Classic is a Microsoft Windows-based communication protocol made to provide real-time data transfer functionality for industrial applications. It has been succeeded by OPC UA.
DNP3
DNP3 is used between components in process automation systems, especially in SCADA systems.
EtherCAT
EtherCAT is a general purpose ethernet-based Fieldbus protocol, whose main feature is the use of a single data frame addressing all slaves of the network in a daisy-chain fashion.
Fieldbus
Fieldbus is the name of a family of industrial computer network protocols used for real-time distributed control, standardized as IEC 61158.
MODBUS
Modbus is an easily deployable, simple and robust serial communication protocol, now commonly used within SCADA systems across industry.
