worldwide standard an article about industrial automation standards OPC UA OPC OPC Foundation OPC Foundation « What is OPC? - OPC Foundation » OPC Foundation https://opcfoundation.org/about/what-is-opc/ https://opcfoundation.org/about/what-is-opc/ OPC OPC Foundation OPC OPC Foundation OPC Foundation « What is OPC? - OPC Foundation » OPC What is OPC? OPC Foundation OPC Unified Architecture Lue lisää OPC-standardista OPC Foundation