ETHERNET BASED INDUSTRIAL COMMUNICATION SYSTEM FOR USING DUAL BUFFER

摘要

The present invention relates to an Ethernet-based industrial communication system using a dual buffer. In particular, in an Ethernet-based industrial communication system using monitoring data and control data in the form of Ethernet packets, the monitoring data and control data are transmitted through an input terminal. An input filter for receiving input and determining the type of input data to generate a first switching signal, outputting the monitoring data through a first output terminal according to the first switching signal, and outputting the control data through a second output terminal; ; Temporarily storing the monitoring data transmitted from the first output terminal and the second output terminal of the input filter in a first buffer, temporarily storing the control data in a second buffer, and outputting the stored monitoring data and control data buffer; a buffer switch that is switched according to an external control and preferentially outputs control data among the monitoring data output through the first buffer of the dual buffer and the control data output through the second buffer of the dual buffer; and a switch controller receiving a first switching signal from the input filter and outputting a second switching signal to the buffer switch so that control data is preferentially output from the buffer switch. According to the present invention as described above, the Ethernet system can be industrially applied by allowing the control data to be preferentially processed in real time through the FIFO buffer.