CAJ | 학술논문

传统 PLC 常采用 CAN 总线作为其扩展总线,CAN 总线的通信速率往往难以满足工业现场大型应用场合的需求,为提高其通信速率,本文提出了一种利用工业实时以太网技术作为 PLC 扩展总线的方案,该方案使用 FPGA 来实现工业实时以太网。本文介绍了基于 FPGA 的以太网实现方法,在标准以太网的基础上,利用定时器实现 PLC 主从站间通信的周期性,同时对以太网数据的发送和接收程序进行了系统的描述。测试表明,该方案可以有效地提高 PLC 的通讯速率。
전통 PLC 상채용 CAN 총선작위기확전총선,CAN 총선적통신속솔왕왕난이만족공업현장대형응용장합적수구,위제고기통신속솔,본문제출료일충이용공업실시이태망기술작위 PLC 확전총선적방안,해방안사용 FPGA 래실현공업실시이태망。본문개소료기우 FPGA 적이태망실현방법,재표준이태망적기출상,이용정시기실현 PLC 주종참간통신적주기성,동시대이태망수거적발송화접수정서진행료계통적묘술。측시표명,해방안가이유효지제고 PLC 적통신속솔。
The traditional PLC often use CAN as its expansion bus.The rate of CAN bus is often difficult to meet the require-ments of the industrial.In order to improve the PLC’s communication rate,the paper introduced a communication module as the PLC’s expansion bus based on the industrial real time Ethernet.The design uses FPGA to realize the industrial real time Ethernet.This paper introduces the implement method of the industrial real time Ethernet based on FPGA.Used the timer to implement the communication cycle between the PLC’s master station with the slave station based on the standard Ether-net.The paper provides a detailed description of the Ethernet’s data sending and receiving procedures.Tests show that the module can effectively improve the PLC’s communication rate.