The Design And Implementation Of Multi-interface Router Based On Real-time Industrial Ethernet With POWERLINK

Along with the continuous development of science and technology, the continuously updated ofindustrial automation control system, industrial field dependence on data acquisition and transmission equipment is increasingly strong.High speed and real-time communication bus is the tie that data transmission in the remote monitoring and network test.Ethernet Profibus is an important member in the field of industrial control, because of its wide application, low cost, high communication speed, etc, it plays an important role in the communication equipment interconnection and information integration.But its weaknessis poor real-time Ethernet.The appearance of Ethernet POWERLINK make up for the deficiency of the traditional Ethernet, and every equipment can be appliedwhich has Ethernet interface.In the industrial field, the interfaces of test equipment are different. In order to meet a variety of applications, it can be increased by more extensive data transfer interface in transmission equipment, multi-interface design will make no difference in the communication system enables transmission applied more widely.The system is designed to six interfaces, in addition to high real-time POWERLINK interface, but also integrates two wired interface CAN, RS485, and three kinds of wireless interface RF433, Zig Bee, WI-FI. All interfaces can be pre-set up,to configure it to be master or slave. Router uplink port for a wired three kinds, downstream ports for any combination of the remaining five interface.This system based on FPGA and open Powerlink protocol stack to achieve the design of POWERLINK slave,.STM32 is the core of system controller, using the built-in UART and CAN controller implements the interface RS485 bus and CAN bus interface design.Useing the UART and SPI connect the wireless module implements RF433 interfaces and WI-FI.At the same time the MSP430 connect the CC2520 module, and with Z-stack to achieve the Zig Bee interface.System software using RTX real-time multi_task operating systemto complete the task scheduling.The design and implementation of a router based on POWERLINK interface complete flexible exchange and protocol conversion between a variety of communication interfaces, which expanded the range of the industrial field data acquisition and transmission.According to the actual situation of industry, this provides a solution for subsequent, to improve system performance and more types of network access flexible configuration.