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前向或后向运动中调整电机控制器的参数
我有一个用7340 motion控制器驱动的闭环系统。负载进行垂直方向运动。因为重力的影响,相对于向上运动,我有不同的负载参数用于向下运动。当进行上下不同方向运动时,如何调整motion控制卡的参数来补偿变化的运动?
URL:
http://digital.ni.com/public.nsf/allkb/8E8F8818E391AAD9862574000018BBB7
热电偶测量时读取CJC的值
在用热电偶测量时,我想得到冷端补偿值(cold junction compensation,CJC)。使用DAQmx驱动,在我扫描读取“通道字符串”中所列的模拟输入通道时,能同时读取CJC的值吗?
URL:
http://digital.ni.com/public.nsf/allkb/16D64979CBBBFF13862573AC0020447A
VISA用定制的.inf文件不能识别PXI/PCI板卡
我已经用VISA Driver Development Wizard对第三方的PXI/PCI板卡制作了.inf文件,但是NI-VISA还是不能识别这个设备。我怎样才能用定制的.inf文件使VISA识别这块板卡呢?
URL:
http://digital.ni.com/public.nsf/allkb/FB151E45F0108548862572C40035D376
NI-IMAQ驱动与Vision Acquisition Software中的VI
我安装了Vision Acquisition Software(NI-IMAQ),但没有安装Vision Development Module。Vision Acquisition Software中包含了哪些LabVIEW的VI?
URL:
http://digital.ni.com/public.nsf/allkb/E6932D663721493C482572BC001FA664
NI-DAQmx Base PDA 范例程序返回错误 -200473
我正运行 NI-DAQmx Base 1.0.1自带的PDA范例程序。当点击了PDA范例程序上的
'Run'
按钮时,我看到:
'Read cannot be performed when task is not running. Start the task before reading. Error Code -200473.'
我如何才能让范例程序正常工作?
URL:
http://digital.ni.com/public.nsf/allkb/57A76EE0C5E68DEF862572B60031B8DD
当我在实时目标机器的DAQ板卡上执行自检操作时,为什么会遇到错误88716?
我已在实时控制器(例如PXI实时控制器或由PC配置成的实时目标机器)上安装好了一块数据采集卡(DAQ)。当我在DAQ板卡上执行自检操作时,遇到下列错误:
Error -88716 occured at Self Test
. 我该如何解决这个问题?
URL:
http://digital.ni.com/public.nsf/allkb/917FC551E5DF9DAE862572B6002857E6
我能否对IMAQ图像使用LabVIEW队列VI?
我希望将采集到的IMAQ图像放到队列里,使其他VI都能够使用这些数据。
URL:
http://digital.ni.com/public.nsf/allkb/8B419C9DDD2429FD482572B5003465AC
NI-DCPower在实时目标机上产生88360号警告
我在实时目标机上安装了NI-DCPower,重启之后出现了一个警告消息'Generated warning: 88360'。是我的安装出了什么问题吗?
URL:
http://digital.ni.com/public.nsf/allkb/F175DA647FD9107A482572B30040EAE5
我应该用什么函数操作Compact DAQ继电器模块?
我有一个cDAQ继电器模块,想知道该用什么函数去操作它。我有了DAQmx开关模块函数,可以使用这些函数操作cDAQ继电器模块吗?
URL:
http://digital.ni.com/public.nsf/allkb/794F2A0A74DB7CED482572B3003D17C3
什么是VISA 驱动开发向导(VISA Driver Development Wizard)?
什么是VISA 驱动开发向导(VISA Driver Development Wizard)?
URL:
http://digital.ni.com/public.nsf/allkb/D35BB9061EEB3E05482572B100225A27
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