Method for industrial communication via TSN
A method is provided which enables industrial communication via the TSN protocol by means of sockets. Owing to the described method, the possibility of communicating with the socket programming known to the programmer via TSN streams is provided. As a result, simple use of the new TSN quality for simple Internet (IP) programming is possible. Existing applications can easily be expanded for TSN and can therefore benefit from the robustness of TSN in a simple manner. In addition, parallel operation is possible; the same mechanism is always used.
1. A method for industrial communication by an application via time-sensitive networking (TSN) from a TSN server to at least one TSN client by means of OPC-UA (Object Linking and Embedding for Process Control-Unified Architecture), the method comprising:
a) in a configuration phase, establishing a data stream with the following steps:
creating a socket and setting up a connection of the application to a TCP/IP stack,
binding the created socket to an address of a TSN driver,
configuring the connection of the created socket by transmitting reservation parameters from the application to the created socket,
establishing a TSN stream and setting by means of the TSN driver a StreamID which is returned to the application,
communicating the StreamID to the at least one TSN client, and
b) in a productive phase, after the TSN stream is established with at least one receiver in the form of the at least one TSN client, transmitting user data to the at least one TSN client using the socket.
2. The method of claim 1 , wherein a separate communication class is used for creating the socket for the TSN and binding the created socket to the address.
3. The method of claim 1 , wherein an address structure used for binding the created socket to the address includes an IP address and an identifier for the TSN stream.
4. The method of claim 1 , wherein the established TSN stream can be changed only by closing the established TSN stream and freshly setting up a new TSN stream.
5. The method of claim 1 , wherein the established TSN stream is closed automatically when a fault occurs or when the at least one TSN client is not connected to the TSN server.
6. The method of claim 1 , wherein when the TSN stream is established, a time window is defined that indicates the period after which the established TSN stream is automatically closed when the at least one TSN client is not connected to the TSN server.
7. The method of claim 1 , wherein the application comprises Publish-Subscribe (PUB-SUB) messaging.