Design And Implementation Of The Distributed Control System Based On Serial Communication

Fieldbus Control System (FCS) is one kind of open, mutually operational, thoroughly disperser distributional control system. It more and more receives the favor by the remarkable performance in the industry control. Meanwhile along with the electronic technology development, the appearance of FPGA enables us to to design own electrocircuit,this technology enables the design product to achieve the miniaturization, the integration and the reliability, moreover the apparatus has the programmable characteristic, which reduced greatly the design time, the design expense and the design risk. Hardware description language VHDL supports the design, the confirmation, the synthesis and the test. It has a lot of merit.such as the strong ability on description, the long life cycle, support of large-scale design and the reuse of the old design. Under such demand and the technical background, the author has realized DCS based on the serial communication, it has the FCS's characteristic.Firstly ,the article has defined this system topology, bus agreement. The Bus agreement include data telegram, correspondence rule and so on. Then introduced how to realize bus agreement by the hardware in detail, including the logical design and the elcetrocircuit design. And logical design has two parts,device manager and modularize bus interface.Then introduced the design of fiber board.next coded the linux driver for device manager.at last write the GUI for user's convenience.Some useful production have come into being from primal design to final implement .the fiber board has already applied at the blue sky numeber control. The design and implement made a very good foundation for the more complicated FCS.