OPC - OLE (Object Linking and Embedding) for Process Control :: The Industrial Interoperability Standard
Automation, Control & Plant Intelligence - Articles, Analysis, Reviews, Interviews & Views
OLE Automation and the underlying COM technologies were designed by Microsoft to allow components (written in C and C++) to be used by a custom program (written in Visual Basic or Delphi).This model provides a precise match for the needs of the processcontrol industry, with hardware developers writing software components in C and C++ for handling data access from a device.Through OPC, application developers can write code in any language necessary to request and utilize plant-floor data.