Design and Implementation of PLC Communication Network based on CAN Bus

With the development of computer technology,communication technology,network technology and control technology,field bus technology and PLC communication technology is gradually mature,and plays an important role in the industrial production.As a new technology,field bus technology is also called the multi point communication,digital and open bottom control network,and mainly applied in the measurement and control device between a bidirectional serial multi-node digital communication system as well as the industrial production site.A PLC network communication scheme based on CAN bus is proposed,and this scheme,by configuring PC and each PLC respectively with a RS232-CAN gateway,makes PC and PLC of CAN bus communication ability,thus constructing the CAN bus-based PLC communication network.