Data relay apparatus for communication module
AssigneeLS Industrial Systems Co., Ltd.
InventorsSoo Gang Lee, Dae Hyun Kwon
Life of this patent
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Abstract
A data relay apparatus for communication module is disclosed, whereby a plurality of normally operative communication modules can perform data communication thereamong by allowing a data relay unit to relay data received by an input/output (I/O) port of an inoperative communication module in a case there is available an inoperative communication module among the plurality of communication modules, in a network configured by connecting the plurality of communication modules having two I/O Ethernet communication ports connected via a line topology.
Claims7
A data relay apparatus for communication module, comprising:
- first and second input/output (I/O) port through which data is received and transmitted;
- a communication module processing data received via the first I/O port, and outputting and relaying the data to the second I/O port, and processing data received via the second I/O port, and outputting and relaying the data to the first I/O port;
- and a data relay unit determining whether the communication module operates normally, allowing relaying the data received via the first and second I/O port in a case the communication module operates normally, and allowing outputting and relaying the data received via the first I/O port to the second I/O port in a case the communication module does not operate normally, and outputting and relaying the data received via the second I/O port to the first I/O port.
Dependencies are inferred from the claim text.