OPC (Object Linking and Embedding for Process Control) is a popular communication interface for remote monitoring or control, but also for integration into applications used for production management or planning. It is mainly used in industry - OPC servers are provided by practically all manufacturers of industrial programmable automata. The OPC interface represents a "neutral" layer that quickly and easily connects sources and consumers of data from different manufacturers without the need to write communication drivers for each combination of client and server.
The OPC server is also available for PLC Domat. It supports both OPC DA and OPC UA. Details can be found HERE.