Friday, July 12, 2024
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Automation, Control & Plant Intelligence - Articles, Analysis, Reviews, Interviews & Views

OPC - OLE (Object Linking and Embedding) for Process Control :: The Industrial Interoperability Standard

OPC - What is OPC Client?
Knowledge Base

Automation Media's recommended most important key terminologies you need to know if you work in Automation, Controls, Brilliant Manufacturing, Operational & Industrial Intelligence or IoT etc. ; regardless of any vendor(s) you are dealing (Allen Bradley, GE Fanuc, Siemens, Modicon, Mitsubishi, Omron, Automation Direct etc).

A software program that is used to contact and obtain data from a Server software program either on the same computer or on another computer. A client makes a request and the server fulfills the request.

An easy example of a client would be an e-mail program connecting to a mail server or an Internet browser client connecting to a web server.

In the case of OPC,

  • an HMI/SCADA Screens may be a client application that connects to an OPC sever.

  • an HMI/SCADA's Database may be a client application that connects to an OPC sever.

  • OPC Client driver from any vendors may be a client application that connects to an OPC sever. So in this case the OPC Client may be I/O driver that provides the interface and communications protocol between OLE for Process Control servers and your process control software.

  • Free OPC Clients   /   Free OPC Servers   /   Free OPC Utilities

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