
3HAB8101-8/08B DSQC346G
3HAB8101-8/08B DSQC346G
3HAB8101-8/08B DSQC346G 产品说明:
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近年来,随着现代化生产技术的提高,以及计算机技术、信息技术和通讯技术的相互渗透,纱线的不匀直接导致布面的不平整,这就说明在纱线生产环节极为重要。纱线不匀是影响其品质的重要指标之一。传统的纱线检测方式都是在实验室离线进行的,通过对纱线的抽样,要求一定的温湿度前提下,相对于纱线的在线检测反映出离线检测的滞后性和随机性。RS-232C串行通讯实现比较容易,常被用于自动控制、数据采集、智能仪表等上位机与外部设备的数据通讯。本文设计了VB与欧姆龙PLC-CJ1M(CPU21)之间的数据通信,在线获得纱线的检测数据,如CV值、纱线瞬时直径、平均直径、粗节最大值、细节最小值等等,及时反映纱线的不匀,使操作人员及时做出相应调整。
1. 上位机与PLC之间通讯实现
欧姆龙PLC—CJ1M(CPU21)有两个串行通讯口,一是通过欧姆龙专用串口通讯线CS1W-CN226,其网络类型设置为Toolbus,同时将DIP4串行通讯设状态置为ON;一是通过欧姆龙九针串口通讯线XM2Z-200S-CV,其网络类型设置为SYSMAC WAY,其它为默认设置,包括端口为COM1,波特率为9600。图1所示为上位机通过RS-232C端口连接到PLC的示意图,也可以称作1:1连接。
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