摘要： 介绍目前在高速公路收费软件系统中得到广泛应用PCL-725卡的输入信号检测、输出开关量控制,从而达到有效控制与其相连的各外场设备,辅助收费作业顺利完成。

关键词: 高速公路收费, PCL-725卡, 工控机

Abstract: This article introduces how to check the input signals and set the output values of PCL-725 card,which is used widely in expressway collecting toll system,in order to control the outfield devices which are connected to the PCL-725 card.The function of these devices is to assist the work of collecting toll to be finished successfully.

中图分类号: 

• TP29