OPC OverviewOPC 'OLE for Process Control' 'Openness, Productivity, Connectivity' Open, standards-based infrastructure for exchange of process control data Specifies set of software interfaces for logical objects, as well functions{methods) of those objectsIDC Technologies and EITOPC Software standard supported by all major process control hardware vendors Out-of-the-box plug & play Users can develop their own clients and servers if they wish, with or without programming knowledgeOPC FoundationIDC Technologies and EITClient server connection:the old wayThe OPC solution: everything connecting to anythingIDC Technologies and EITHow? By creating a 'data bus'OPC DA logical object modelIDC Technologies and EITClientJserver relationshipClientJserver relationshipIDC Technologies and EITGroupJitem relationshipOPC clientJserver relationshipIDC Technologies and EITTunnelingIDC Technologies and EIT