OPC is a software interface interoperability standard that enables secure and reliable data exchange between Windows programs and industrial hardware devices. It is platform independent and ensures a constant flow of information across multiple vendor devices. In today’s blog post, Uniduc would like to introduce to you the information about what OPC server is, the principle of operation as well as the benefits that it brings.

I. What is OPC server?

The acronym for OPC stands for OLE (Object Linking and Embedding) for process control. OLE is based on the Windows COM (Component Object Model) standard.

The OPC standard is implemented in server/client pairs. The OPC server is a program that converts the hardware communication protocol used by the PLC to the OPC protocol. OPC client software is a program that connects to hardware, such as an HMI. The OPC client communicates with the OPC server to receive data or send commands to the hardware.

II. The principle of operation of the OPC server. Watching: What is Opc

The OPC specification describes the interface between client and server, server and server, including real-time data access, monitoring of alarms and events, access to historical data, and applications. other.

The classic OPC connection scenario is a server-client connection on a single computer, with other options available:

Connect an OPC client to several OPC servers. This is called the OPC aggregation. Connect the OPC client to the OPC server over the network. This can be done with OPC tunneling. Connect the OPC server to another OPC server to share data. This is called OPC bridging.

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OPC DataHub is designed specifically for all of these tasks. A combination of OPC server and OPC client supporting multiple connections. Therefore, it can connect to multiple OPC servers at the same time for OPC aggregation and bridging. Two OPC DataHubs can mirror data over a TCP network to provide OPC tunneling.

III. Technical benefits that OPC server brings.

The following OPC specifications are used in industries:

OPC-DA (Data Access): Provides access to real-time data. We can query We can query most recent values ​​of temperature, pressure, density, acceleration and other types of process control data from the OPC-DA server. OPC-HDA (Historical Data Access): Used to retrieve historical process data for analysis. This data is usually stored in files, databases, or remote systems. OPC-AE (Alarms & Events): The OPC AE server is used to accept and communicate alarms and events. OPC-XML (Access XML Data): It defines XML standards-based charting and data chart formats. This allows sharing and manipulation of process control data across all operating systems – Windows, UNIX, Solaris, etc.

IV. Benefits of using the OPC standard. See also: What is graduate school – The role of graduate school

Reduce the load on the hardware device. Increase the scalability of the system. Because of the OPC server, client applications do not need to know anything about hardware protocol details. Although the equipment does not need to serve many customers, the life of the equipment increases. Interoperability (Unix/Linux and Windows – both platforms supported by OPC). Standardize.

V. Deploying OPC.

Embedded solutions for the OPC industrial automation product line have been made available to many users, including the following detailed jobs:

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BIS: Building Integration System or BIS is a software package that brings building automation, access control, video surveillance, intrusion, fire alarm and voice evacuation into one convenient management suite. . Classic OPC server implemented TCP/IP protocol specific protocol to monitor and control different types of building integrated system boards, which can communicate with BIS system software OPC client. System Alerts: In the OPC server, we have implemented the OPC-DA (Data Access), OPC-HDA (Historical Data Access) and OPC-AE (Alarms & Events) specifications. ). To control and monitor the panels, the OPC client executes various commands to the panels using the OPC server, e.g. door unlock, door lock, arm area, etc.

The OPC server contains the following modules, functions and operations:

Design, develop and test classic OPC server for different boards used in building integration system with specific Automation protocol. Execute the following group commands on the OPC Server: system, control panel, door, area, output, point. Integrated OPC (TCP) server communication. Built-in OPC server communication stack (TCP). OPC server security – AES 256 command authentication. Client command execution and state.

Above is the answer to the question of what OPC server is, how it works and what benefits Uniduc hopes will be useful to you. Besides this article, we also regularly update information about technology, machinery, equipment or production lines, Please continue to follow our news page to update many useful information!

In addition, Uniduc company also specializes in providing business management software solutions, you can contact us for free use, with the best cost.

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