Development for Profibus-DP and Modbus protocol conversion gateway and use of the gateway can
support all of these two protocols to the field device data into the main control room. Since our objective
conditions, Modbus products will be in China for a long time and have a broad market in the future.
Profibus-DP is the world's most widely used field bus technologies. Therefore developing a two-bus
integrated gateway have a more important practical significance. This simple, reliable and practical means
of communication can be extended to the industrial field. This paper discusses the conversion of the key
problems and solutions ideas, the proposed protocol conversion principle can be extended to other bus
protocol conversion applications. The gateway will further promote the development of both the
application and development of the bus