OPC UA (Open Platform Communications Unified Architecture) is a modern industrial communication protocol, based on open standards, designed for secure, scalable, and platform-independent exchange of industrial data between devices, software, and corporate systems. It is the evolution of the old OPC COM/DCOM specification, offering unified, object-oriented communication compatible with Ethernet
PROFINET (Process Field Network) is an industrial communication protocol based on Ethernet, developed by PROFIBUS & PROFINET International (PI). It allows deterministic and real-time data exchange between controllers (PLCs) and industrial devices such as sensors, actuators, inverters, HMIs, and test systems. It is widely used in process automation and discrete
EtherNet/IP (Ethernet Industrial Protocol) is an industrial communication protocol based on the Ethernet standard, used for integration between controllers, sensors, actuators, and supervisory systems in industrial networks. It combines the speed of standard Ethernet (TCP/IP and UDP) with the data structure of CIP (Common Industrial Protocol), widely used in PLCs