US 12,250,094 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. 17/748,775.
Application 17/748,775 is a continuation of application No. PCT/EP2020/082919, filed on Nov. 20, 2020.
Claims priority of application No. 10 2019 217 913.4 (DE), filed on Nov. 20, 2019.
Prior Publication US 2022/0278871 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)] 23 Claims
OG exemplary drawing
 
1. A method for linking a first time-sensitive fieldbus to a second time-sensitive fieldbus, wherein the first time-sensitive fieldbus includes a first subscriber device and has its own first time domain, wherein the second time-sensitive fieldbus includes a second subscriber device and has its own second time domain, wherein the first time domain and the second time domain are frequency-synchronized, and wherein the first and second fieldbuses are connected to one another via a gateway for data transmission, the method comprising:
determining, at a reference time by the gateway, a first cycle duration of the first time domain that contains a first time slot for a transmission of time-sensitive data and a second cycle duration of the second time domain that contains a second time slot for a transmission of time-sensitive data; and
determining, by the gateway, a time offset between the first time domain and the second time domain at the reference time.