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2. OPC Foundation - Wikipedia

   en.wikipedia.org/wiki/OPC_Foundation

   The OPC Foundation (Open Platform Communications, formerly Object Linking and Embedding for Process Control [1]) is an industry consortium that creates and maintains standards for open connectivity of industrial automation devices and systems, such as industrial control systems and process control generally.

3. Open Platform Communications - Wikipedia

   en.wikipedia.org/wiki/Open_Platform_Communications

   Open Platform Communications (OPC) is a series of standards and specifications for industrial telecommunication. They are based on Object Linking and Embedding (OLE) for process control. An industrial automation task force developed the original standard in 1996 under the name OLE for Process Control.

4. The Open Group - Wikipedia

   en.wikipedia.org/wiki/The_Open_Group

   The Open Group is a global consortium that seeks to "enable the achievement of business objectives" by developing "open, vendor-neutral technology standards and certifications." It has 900+ member organizations and provides a number of services, including strategy, management, innovation and research, standards, certification, and test ...

5. List of automation protocols - Wikipedia

   en.wikipedia.org/wiki/List_of_automation_protocols

   oBIX - Open Building Information Exchange is a standard for RESTful Web Services-based interfaces to building control systems developed by OASIS. UPB - 2-way Peer to Peer Protocol; VSCP - Very Simple Control Protocol is a free protocol with main focus on building- or home-automation; xAP – Open protocol

6. OPC Unified Architecture - Wikipedia

   en.wikipedia.org/wiki/OPC_Unified_Architecture

   Although developed by the same organization, OPC UA differs significantly from its predecessor, Open Platform Communications (OPC). The Foundation's goal for OPC UA was to provide a path forward from the original OPC communications model (namely the Microsoft Windows-only process exchange COM/DCOM) that would better meet the emerging needs of industrial automation.

7. Process automation system - Wikipedia

   en.wikipedia.org/wiki/Process_automation_system

   A PAS is often based on open standards in contrast to a DCS (distributed control system), which is traditionally proprietary. However in recent times the PAS is considered to be more associated with SCADA systems. PAS is the lowest level of automation, while MES (manufacturing execution system) is considered to be directly positioned above a PAS.

8. OPC Data Access - Wikipedia

   en.wikipedia.org/wiki/OPC_Data_Access

   The OPC Data Access Specification is the first of a group of specifications known as the OPC Classic Specifications. [1]OPC Data Access is a group of client–server standards that provides specifications for communicating real-time data from data acquisition devices such as PLCs to display and interface devices like Human–Machine Interfaces (HMI), SCADA systems [2] and also ERP/MES systems. [3]

9. AS-Interface - Wikipedia

   en.wikipedia.org/wiki/AS-interface

   AS-Interface is an 'open' technology supported by a multitude of automation equipment vendors. The AS-Interface has been an international standard according to IEC 62026-2 since 1999. AS-Interface is a networking alternative to the hard wiring of field devices.