On Profibus Slave Station Controller Research and Design Based on FPGA

An embedded PROFIBUS-DP slave station controller based on NIOS II has been designed in this paper.A chip of FPGA is selected as the hardware on which the controller has been realized.NIOS Ⅱ CPU embedded is adopted as the processor which coordinates the other circuits to finish the control task.The PROFIBUS interface is designed in the FPGA as an IP core using VHDL program.The IP core is mainly composed of UART interface,FDL protocol processing module and NIOS Ⅱ CPU interface.Applied in batching system for experiment,the controller represents satisfied performance.