The acronym OPC stands for "Open Platform Communications", which refers to an open communication platform. Also called Classic OPC.
OPC is an interoperability standard for the secure and reliable exchange of data in industrial automation. It is platform independent and guarantees the continuous flow of information between devices from various vendors.
The OPC standard is a series of specifications developed by industry vendors, end users, and software developers. These specifications define the interface between Clients and Servers, as well as Servers and Servers, including real-time data access, alarm and event monitoring, historical data access, and other applications.
Smar has OPC DA (Data Access), AE (Alarm & Events) and OPC UA (Unified Architecture) servers to ensure communication and interoperability with different equipment manufacturers and software tools.