What is OPC UA client?

OPC UA is used as a transport route and IT standard featuring integrated security. As an OPC UA client, the controller pushes the data as “historical access” data directly into the “big data management solution” stored in the cloud.

Is OPC UA TCP?

OPC UA has become completely platform-independent through TCP/IP and web protocols for communication. An OPC server, which makes its data available in the network, can be addressed via these protocols.

Is OPC UA reliable?

OPC UA is a more secure, open, reliable mechanism for transferring information between Servers and Clients.

What is OPC UA used for?

OPC Unified Architecture (OPC UA) is a machine-to-machine communication protocol used for industrial automation and developed by the OPC Foundation. The OPC UA platform in an platform-independent service-oriented architecture that integrates individual OPC Classic specifications into an extensible framework.

Is OPC UA push or pull?

As illustrated in Figure 1, the action of a traditional client-server polling model is sometimes described as a “pull” (since the OPC server “pulls” I/O readings out of the various devices), whereas the action of ioLogik’s Active OPC is described as a “push” (since the ioLogik “pushes” I/O readings from the various …

Is OPC UA stateful?

Technically, OPC UA cannot be considered stateless – given the need to define SecureChannels and Sessions as foundational transport.

What port does OPC UA use?

Port. The TCP port on which the MTConnect OPC UA server is listening for connection requests of the OPC UA clients. The default port is 48031. The default port number is set during the MTConnect setup.

How OPC UA clients discover servers?

The Client appends “UAdiscovery” to the local host name to form the Discovery endpoint. The Client may be configured to use a specific transport like OPC UA TCP or HTTPS. If not, it may progressively try contacting the server using different transports until it finds a Discovery endpoint that the server supports.

Is OPC UA stateless?

Does OPC UA use DCOM?

Since OPC UA doesn’t rely on DCOM, you can network OPC UA over the internet and through firewalls much more efficiently and reliably.