基于西门子PLC与Dupline总线的信号采集系统实现

摘要

Dupline总线作为一种现场及安装总线,能通过普通双芯线缆传输数字和模拟信号达数公里距离,适用于长距离单一设备的远程检测与控制.本文利用西门子S7-300 PLC与作为远程I/O分站的Dupline网关进行通讯,读取信号状态,并详细介绍了硬件和软件的组态方法,为信号采集方法提供了借鉴.%As a field and installation bus,dupline can transmit digital and analog signals for several kilometers through two wire common cable and suitable for long distance single remote detection and control of the equipment.This article designs the signal acquisition system through the communication between Siemens S7-300 PLC and dupline gateway which is used for the remote I/O station,and describes the methods of hardware and software configuration,and provides a reference method for the signal acquisition.