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6533/6534具备三态功能吗？
硬件: Digital I/O (DIO)>>High-Speed Digital I/O>>PCI-6534, Digital I/O (DIO)>>High-Speed Digital I/O>>PXI-6533, Digital I/O (DIO)>>High-Speed Digital I/O>>PXI-6534, Digital I/O (DIO)>>High-Speed Digital I/O>>PCI-6533
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问题: 我想在6533/6534上面实现双向通信。因此有时需要将某一根线设置为三态，我想知道是否可能。
解答: DAQmx通道属性节点允许6533/6534输出三态，但必须是软件定时的三态。DAQmx通道属性节点DO.LineStates.DoneState是用来定义硬件定时三态的。这个属性节点并不能被6533/6534所支持，因此任何硬件定时的三态都不可行。
相关链接: Product Manuals: NI 6533/6534 Devices for NI-DAQmx Help
Developer Zone Example: Performing a Software Timed Tristate on the 6533/6534
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报告日期: 08/23/2007
最近更新: 09/09/2008
文档编号: 4CMCHA49