关键词：PROFIBUS-DP 组态 GSD文件
Communication Interlink of Control
System Based on PROFIBUS Fieldbus
ABSTRACT
Fieldbus is a kind of data network that is used to connect the field devices such as intellectual appliance, controllers, implementing agencies. This data network is a kind of communication with such cha racteristics as serial, figurative and multipoint. The excellent technical skill of PROFIBUS Fieldbus has been put into a wide application in the whole world.
First，this thesis will make a specific research for the communication protocol and equipment types,and establish frequency conversion control system based on the PROFIBUS protocol. This system use PC as position machine,siemens S7-300 PLC as master, siemens S7- 200 as slave,Siemens STEP 7 software could lead in the GSD document and configure the whole system, and the realization of communication connection in the system; And then, in allusion to the equipment without PROFIBUS interface I empolder the communication module. The protocol itself is complicated. The use of special communication can speed up implementing protocol and reduce the developing time. This thesis makes an introduction on the software design method by using SPC3 protocol chip to develop PROFIBUS-DP slave，and then makes a detailed description of the pattern of the GSD document and how to program GSD document by using GSD editer.
