Development of Embedded Fieldbus Protocol Conversion Gateway

A design scheme for an embedded protocol conversion gateway is proposed as there are many fieldbus protocols coexisting.The structures of two widely used fieldbus,i.e.,PROFIBUS-DP and MODBUS are analyzed,as well as the data transmission methods and the feasibility to design the protocol conversion gateway.Based on the analysis results,the circuit design and the workflow of the gateway are presented.Adopting the microprocessor S3C4510B has an easy access to the protocol chip ASPC2 of PROFIBUS-DP,and it makes it easy to develop Ethernet interface for long-distance dynamic supervision.The gateway has been put into field area for testing,the results shows that it is reliable and effective.