What Is OPC? (An Easy Definition + Basics Explained)
Open Platform Communications
What Exactly Is OPC?
OPC is a set of standards for the secure and dependable exchange of data in industrial automation. It was designed to allow devices and systems from different manufacturers to interoperate and communicate in a common language. This is significant because, in the past, each manufacturer used their own communication protocols, making it difficult for devices from various manufacturers to connect. This need for interoperability was a significant barrier to integrating many systems and devices, impacting productivity and efficiency.
OPC was designed to overcome this issue by providing a single language for these devices’ interoperability. It specifies a collection of interfaces and protocols that allow devices to communicate data consistently. Regardless of the underlying communication technology or protocol, this enables devices from various manufacturers to connect smoothly.
Some important aspects of OPC include:
OPC is not single software; it is a set of standards;
It enables the integration of devices and systems from several manufacturers; and,
it gives these gadgets a common language to speak with one another.
How Does It Work?
OPC is built on a client-server architecture in which the OPC server is the data provider, and the OPC client is the data consumer. The OPC server receives data requests from OPC clients and returns the requested data to the clients. This enables the OPC client to access and control data from various devices in a consistent manner.
Suppose, for instance, that you have an OPC server that is connected to temperature and pressure sensors. An OPC client, such as an HMI (Human-Machine Interface), can request data from an OPC server in order to display the current temperature and pressure values on the HMI display. The OPC server will accept the request from the OPC client and respond with the current temperature and pressure values. The OPC client may then consistently show the data on the HMI panel, regardless of the communication technique or protocol used by the temperature sensor and pressure sensor.
Key aspects of OPC’s operation include:
OPC’s architecture is client-server
The OPC server is the data supplier, whilst the OPC client is the data consumer.
The OPC client has standard access to and controls data from various devices.
What Problems Does It Address?
Lack of compatibility between devices and systems is one of the most significant obstacles in the industrial automation industry. Each manufacturer may utilize their own communication protocols, making it difficult for devices from various manufacturers to connect with one another. This need for interoperability is a significant barrier to the integration of diverse systems and devices, hence impeding productivity and efficiency.
OPC solves this issue by providing a standard language for these devices to communicate with one another. It specifies a collection of interfaces and protocols that allow devices to communicate data in a consistent manner. Regardless of the underlying communication technology or protocol, this enables devices from various manufacturers to connect with one another smoothly.
In addition to addressing interoperability difficulties, OPC provides a secure and dependable method for devices to communicate data. It incorporates encryption and authentication to ensure the security and integrity of the data being transferred. In industrial automation, where the accuracy and dependability of data can have dire repercussions, this is crucial.
How Can I Download It?
Some suppliers may offer free trials or demos of their OPC products, allowing you to examine the product before purchasing. It is essential to test the product properly to ensure that it fits your needs and is compatible with your existing systems.
Where Can I Buy It?
Numerous vendors offer OPC-compliant solutions, including automation controllers, human-machine interfaces, and SCADA systems. You can search online for providers of OPC products, or you can contact a local supplier of automation.
It is essential to conduct thorough research and comparisons of various products and sellers to get the optimal solution for your needs. Consider variables such as the product’s features and capabilities, the vendor’s reputation and experience, and the product’s pricing and terms.
In conclusion, OPC is an indispensable standard in industrial automation. It enables equipment and systems from different manufacturers to interoperate and communicate with one another, enhancing the efficiency and productivity of industrial systems. OPC solves the lack of interoperability between various devices and systems and provides a secure and dependable method for data exchange. It is best to obtain OPC-compliant items from trusted suppliers. Research and comparison of various products and sellers might assist you in locating the optimal solution for your needs.
