US 11,973,616 B2
ETHERCAT bus system including an ETHERCAT bus master and ETHERCAT bus station
Michael Schäfer, Karlsdorf-Neuthard (DE); and Daniel Brunner, Karlsdorf-Neuthard (DE)
Assigned to SEW-EURODRIVE GMBH & CO. KG, Bruchsal (DE)
Appl. No. 17/641,377
Filed by SEW-EURODRIVE GMBH & CO. KG, Bruchsal (DE)
PCT Filed Aug. 6, 2020, PCT No. PCT/EP2020/025361
§ 371(c)(1), (2) Date Mar. 8, 2022,
PCT Pub. No. WO2021/043435, PCT Pub. Date Mar. 11, 2021.
Claims priority of application No. 102019006303.1 (DE), filed on Sep. 6, 2019.
Prior Publication US 2022/0407739 A1, Dec. 22, 2022
Int. Cl. H04L 12/40 (2006.01); H04L 12/44 (2006.01)
CPC H04L 12/40019 (2013.01) [H04L 12/44 (2013.01); H04L 2012/4026 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An Ethernet for Control Automation Technology (EtherCAT) bus system, comprising:
an EtherCAT master provided on a printed circuit board and including a first connection;
EtherCAT nodes; and
an EtherCAT star hub arranged and/or assembled on the printed circuit board with the EtherCAT master and including a second connection;
wherein a level converter is arranged at a connection of the master, from which data lines lead to another level converter via at least one capacitive isolation, the other level converter being arranged at and/or connected to a connection of the star hub.