NI PXI-2565供了强大的对象链接和嵌入功能
CPU停止模式
CPU在停止模式时有两种操作模式:
■/O扫描使能-每个周期都进行输入输出扫描
■I/O扫描失效-跳过输入输出扫描
CPU在停止模式时不执行应用程序。用户可以自行配置是否在停止模式进行/O扫描。停止模式下,仍然与编程器和智能模块通讯。停止模式下,仍然校验总线接收模块和进行机架重配置。
在这两种停止模式中,控制器通讯和背板通讯窗口以运行-停止模式运行,后台窗口以受限模式运行,限定值为10毫秒。
最后的扫描数可以在硬件配置中设定。在收到运行到停止的转换信号或者故障停止时,要完成一定次数的扫描才转换到停止状态。缺省值为0。服务请求13(SVCREQ13)用于设定完成多少次扫描后CPU转换为停止状态。所有的I/O转换到配置的缺省状态,CPU故障表会记录一条自诊断信息。
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