Device for realizing the data transmission and ring break of Ethernet in channel ring formation application

The utility model is a device for realizing the data transmission and ring break of Ethernet in channel ring formation application, wherein a first output/input end of a conversion module from a self-defined route date frame to a fixed rate channel is correspondingly connected with a first input/output end of the conversion module where the group data frame is synthesized to a transmission channel; a second input/output end of the conversion module where two groups of data frames are synthesized to the transmission channel is correspondingly connected with the first output/input end of the conversion module from the Ethernet data to the fixed rate channel; the device has the following advantages that: by using this device, the software disconnects the transmission of the Ethernet on some node according to the self-defined route protocol after the ring formation of the Ethernet is found, and then forbids the transmission to the port where own transmission is performed so as to realize the ring break function;