Patent ID: 11882178
Assignee: B&R INDUSTRIAL AUTOMATION GMBH
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method for synchronizing respective local network time of components of a real-time network, wherein the components are connected to one another via ports to define a synchronization path and the components each transmit synchronization packets to connected components through the ports, wherein a component of the real-time network is designated as a synchronization master, and using the synchronization packets, the local network time of other components not designated as the synchronization master, is synchronized with the local network time of the synchronization master, the method comprising:
using the synchronization packets starting from the synchronization master along the synchronization path, synchronizing the local network time of the other components along the synchronization path with the local network time of the synchronization master;
wherein the components, at a time at which a synchronization packet is transmitted to the connected component, transmit a time stamp of their local time with the synchronization packet, and
wherein each of the components calculate for a port, via which the synchronization packet is received from a respective connected component, a difference time from a difference between the time stamp received in the synchronization packet and a time stamp of their local time when receiving the synchronization packet from the respective connected component, and
synchronizing the local network time of the other components using the calculated difference time.