Thursday, July 16, 2020
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OPC - OLE (Object Linking and Embedding) for Process Control :: The Industrial Interoperability Standard

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Automation Media is dedicated to develop the awareness and understanding about interoperability in automation by providing best information about open specifications that standardize the communication of acquired process data, alarm and event records, historical data, and batch data to multi-vendor enterprise systems and between production devices. Production devices include sensors, instruments, PLCs, RTUs, DCSs, HMIs, historians, trending subsystems, alarm subsystems, and more as used in the process industry, manufacturing, and in acquiring and transporting oil, gas, and minerals.

OPC - With the DCOM, how does it handles the remote server being disconnected problem?

DCOM provides built-in features that ensure OPC clients and servers have a robust and reliable mechanism to exchange real-time information across the network.

DCOM also handles retries and time-outs between an OPC client and a remote OPC server and tries to reestablish communications if they are disconnected.

One of the strong points of OPC is that it leverages other standard software technology like Microsoft ActiveX, DCOM, and Windows NT. Microsoft DCOM technology makes distributed, client/server networking transparent to the OPC application. DCOM makes the underlying network communication protocol transparent to the OPC client/server. DCOM may send OPC messages using a variety of transports such as UDP,TCP/IP, and IPX, using the same OPC application using DCOM.

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