Grounding the shield
I have a shielded cable that passes to my controller via multiple junction boxes. Should I ground my shield at each splice in the juction box or should my shield be continuous and be grounded only at...
View ArticleLabview Program will not communicate with my NI USB-6210 w/ 3 pressure...
I have an .exe Labview program that i have used for over a year and it all of a sudden stopped communicating with the NI USB-6210 that i have all of my pressure transducers connected to. I have little...
View Article9207 current measurement inaccuracy / offset
Hello I am using cRIO-9074 with NI9207 for current measurement from pressure transducer 4~20 mA signal. I have observed that the readings mentioned by equipment are slightly offset when compared to a...
View Articlehow to increase the frequency (of the while loop) of PID controller ?
Hi all,I wrote a PID controller and found that I can not set the control frequency as high as I want. I attached the VIs for your reference.I use a "wait" VI to set the frequency of the while loop and...
View ArticleAccess to TWINCAT PLC via LabView
Hello, I want to have access to the TwinCAT PLC variables in Labview.The TwinCAT software and Labview application are running on different PC's.In my Labview application I want to have access to the...
View ArticleGetting voltage spikes from an analyzer on the usb-6212 analog input
I have an NI USB6212 the BNC style DAQ and am trying to read in the voltage from a gas analyzer. I keep seeing these voltage spikes in the data stream though, and they are not present when I plug the...
View Articlehow to save data in a way like queue or stack?
Hi everyone,I have problem finding the suitable function to save data into txt or TDMS like queue or stack. Could anybody show me some sample to save data like that?The data is generated in a while...
View ArticleEthernet Timeout Error with Custom Instrument
Hello All, I have an application where I am using two cDAQ-9188 chassis and one custom (non-NI) module, all of which are on the same network.The network has only four nodes, the PC and the three...
View ArticleUSB 6008 relay switching speed? Delay through software?
Hi guys, I have a setup with an USB6008 that controls some relays. However, I am unable to get the relays to switch fast enough. I can see by the USB6008 that the digital output ports have a speed of...
View ArticleConnecting USB6343 onboard 5v to AI 4 5 6 7 through 4 switches and AI GND...
Hey, I am connecting USB6343's onboard 5v source to AI 4 5 6 7 through 4 switches (and AI GND). This results in floating signals and sinusoidal noise when i close the switches and not the expected 0v...
View ArticleConnect photoelectric sensor to cDAQ and measure RPM
Hi ! I have a photoelectric sensor that i want to use for RPM measurement on a rotating system. My problem is that I don't really know how to wire it to my NI modules. Is it possible to hook it up to...
View ArticleCrash in mxsout.dll after powering up cDAQ
Hello everyone,I have an equipment[-controlling application (Windows7-64bit/Visual Studio 2012/C++/DAQmx), which can toggle the power turning the hardware on/off. It works fine, but what happens as...
View ArticleHow do I open and close an electronic shutter through LabView 8.5.1 using an...
Also I need to set up a timer so the shutter is open for 15 minutes and closed for 30 minutes. This has to cycle 500 times.
View Article4474 digital filter
I am using a PCI 4474 at maximum sampling speed of 102400 HzOne of the four analog inputs is TTL signal for time stamps: see attachment with horizontal sample number [#] and vertical input voltage...
View ArticleError message in NI-MAX, NI-daq USB 6009
Hi! I am getting the following error message when trying to load devices in NI-max devices and interfaces."The database file is corrupt. Refer to KnowledgeBase article 4GA9TOQA for information about...
View Articlequery scxi-1001 chassis for installed modules
I am working on a new project. It is a SCXI-1001 chassis.How do I find out what modules are installed assuming I am not standing in front?I want to do this in NI-MAX and also in LabVIEW.
View ArticleMultiple triggers for one AI
Hi! I´m reading an analog signal triggered by a TTL signal.Now i will have 3 different TTL signals and I would like the adquisition to start when the first positive signal arrives. Is this possible?...
View Articlehow to Synchronize pci6733 and usb-6361?
I have a pci6733 and a usb-6361.I want to Synchronize AI,A0 and DO. USB-6361 have no RTSI bus. So they can only be Synchronized through PFI. I want to use usb-6361 as time source. I dont know whether...
View ArticleHigh Speed Closed Loop Control with PCIe 6361
Hi, I am trying to implement closed-loop control with an NI-PCIe 6361 module. Is there a way to acheive faster sampling rate than 1ms? The device allows data acquisition at MHz rate, so a sampling rate...
View ArticleHow to toggle the amount of signals obtained from the DAQ assistant?
Hi, I am relatively new to LabView and I am wondering if I can get some helpful tips to write my code. I have a NI 9191 wifi chasis with a 16-channel thermocouple input module (NI 9213). I would like...
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