The Fieldbus Control System Of Dye-neaten Equipment Based On C8051F040

Fieldbus control system is a system which realizes the bidirectional serially digital multi-node communication between measuring control equipments with computers, it's also called bottom control network of open digital multi-node communication. It causes the revolution against the traditional control system structure, then the fieldbus control system (FCS) comes into being, which is the new style network-integrated wholly distributed control system. The independent transmission and automatic registration system of rotary screen printing machine apply high technology to traditional rotary screen printing machine. It improves greatly content of technology of rotary screen printing machine and level of its products. In this thesis, FCS is taken as the object to be studied. CAN nodes design in the rotary screen printing machine system is studied. The contents are as follows:A universal architecture of CAN bus control system is provided, including the top application software of the system and the hardware and software solution of main nodes. The synchronization problem between electromotors in the rotary screen printing machine fieldbus control system is successfully resolved. Some diagnosis steps partly enhance the safety and reliability of the system. Taking Rotary screen printing machine FCS as a specific examples, analyses some problems perhaps emergence on the process of apply the CAN bus, such as network- topology structure, terminal resistance matching etc, and then introduced the EMC design of the system.In the end, this thesis makes a summary about full text and prospect the development of the system, and give a idiographic scheme.