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公司：武汉恒鑫隆自动化设备有限公司
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地址：武汉江岸区二七路500号锦苑公寓1栋2单元3层1室
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系统配置
人机界面为OP77，控制单元采用CPU226。CPU226中的一个端口port1作为连接OP77和CPU的接口，用一根PPI电缆线简单连接即可，另一端口port2用于连接条码扫描枪。由于条码扫描枪为232接口，而自由通讯口为485口，所以还需一个232-485转换模块，本例中选用了一根西门子编程电缆线。可是一般串口扫描仪大多用于与计算机相连，所以线的插头为孔状，而可编的断口也为孔状，因此必需再做一根两头为针状的交叉式连接的短接线（头2，3对接，5直连）连在扫描仪和port0之间。
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