Coupler for a network with ring topology and Ethernet based network.

摘要

Network coupler (1) with an external interface (11) for connection to a network (2), which can be transmitted Ethernet telegrams (ET), and an interface (12) inside for connecting a plurality of users (device 1, does, device n) in series to a transmission circuit (3) in circular shape, wherein an Ethernet telegram (ET) received via the external interface (11) is forwarded to the interface ( 12) internally and is delivered to the transmission circuit (3, 31) in a ring, characterized in that each user (device 1, does, device n) connected to the interface (12) inside, passing the Ethernet telegram by the transmission circuit in a ring through the corresponding user exchanges the user data intended for the user with the Ethernet telegram (ET) circulating on the transmission circuit, the user can extract data from the data block (device data 1, what, device data n) assigned to the user (ET) in the field of Ethernet data telegram (ET) and may in turn, add data in the data block assigned to the user data field of the Ethernet telegram.