US 12,237,945 B2
Method, system, and gateway for linking time- sensitive fieldbuses
Fabian Schwamborn, Lemgo (DE)
Assigned to Wago Verwaltungsgesellschaft MBH, Minden (DE)
Filed by WAGO Verwaltungsgesellschaft mbH, Minden (DE)
Filed on May 19, 2022, as Appl. No. 17/748,936.
Application 17/748,936 is a continuation of application No. PCT/EP2020/082958, filed on Nov. 20, 2020.
Claims priority of application No. 10 2019 217 906.1 (DE), filed on Nov. 20, 2019.
Prior Publication US 2022/0278873 A1, Sep. 1, 2022
Int. Cl. H04L 12/403 (2006.01); H04L 7/00 (2006.01); H04L 12/66 (2006.01)
CPC H04L 12/4035 (2013.01) [H04L 7/0008 (2013.01); H04L 12/66 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method for networking a first time-sensitive field bus with a second time-sensitive field bus, the first time-sensitive field bus comprising a first subscriber device and having a first dedicated time domain, and the second time-sensitive field bus comprising a second subscriber device and having a second dedicated time domain, the first time domain and the second time domain being frequency-synchronized, the first and the second field buses being connected to each other via a gateway, the method comprising:
storing a first subscriber device identifier in a memory of the gateway, the first subscriber device identifier identifying a virtual copy of the assigned first subscriber device of the first field bus;
storing a second subscriber device identifier in the memory of the gateway, the second subscriber device identifier identifying a virtual copy of the second subscriber device of the second field bus;
determining, at a reference time via the gateway, a first cycle duration of the first time domain of the first field bus that contains a first time slot for a transmission of time-sensitive data and a second cycle duration of the second time domain of the second field bus that contains a second time slot for a transmission of time-sensitive data; and
determining, via the gateway, a time offset between the first time domain and the second time domain at the reference time.