When I try to self cal my analog cards, I receive an error -89123 (Hardware necessary for this route is in use by another route or routes). I have no analog tasks running, but I do have some trigger signals routed, a digital output task running, and a digital input task running.
Can Self Cal be run in this condition? If not, can anything be active on the card at all?
Thanks,
XL600
Hello Everyone.
I am using labview 2014 and NI USB 6353 daq card.
I am developing application for multi UUT Testing.
In my Application i have to drive stepper motor for fixed amount of pulse and this pulse also has to be measure for accuracy testing. i can test 4 UUT Simultaneously right now. as 4 counter channel are available in daq card.
but need to increase No of uut Testing parallel.
Pulse frequency is 500 Hz.
How can i measure pulse count without using counter channel. or is there any way using digital pin?
My application is asynchronous. Any uut testing can start or stop asynchronously as well as simultaneously also.
my state machine for UUT testing are separate.
Hello everyone,
I am looking for a new Stand-Alone DAQ multifunctional device.
I need a DAQ device for an experimental set up. Set up consists of camera and three lasers. I want to make alternating lasers, i.e. laser1 fires for few camera pulses and turns off, then laser2 switches on and fires for few frames and turs off, then the third one. Then entire sequence repeats.
I tried using NI DAQ USB-6281 device and use its 2 counters to make at least two alternating lasers, but it didn't work out (seemed like I needed at least 3 counters...) Another idea was to use Pattern Matching, but 6281 doesn't have such feature.
So, what I need is:
-Stand-alone device
-Mostly digital i/o
-At least one analog i/o
-Device with USB preffered
-Good for Pattern Matching
-Or enougth counters for such task
Thoughts on which devices might me suitable? Where can I find a list of devices that support pattern matching?
Also, any advice on creating vi's for alternating lasers is appreciated.
Thanks,
Daniel
Why is it that I cannot retrieve a PXI-6281 device temperature (From the Calibration Info property node) while an analog input task is running? It seems a no-brainer to want to read the temperature while operating for long periods (To detect if there's been a drift in the self calibration).
Give it a try:
Start a continuous analog input task in Max on an analog card
Run this:
And you should get this:
"Error -50103 occurred at Property Node DAQmx Calibration Info (arg 3) in Cal_Info_Test.vi
Possible reason(s):
The specified resource is reserved. The operation could not be completed as specified."
Is the 6281 using an analog input task to read the sensor?
Thanks,
XL600
equired Resources in Use by
Task Name: _unnamedTask<9B>
Source Device: cDAQ1
Source Terminal: Ctr0InternalOutput
Destination Device: cDAQ1Mod1
Destination Terminal: PFI3
Task Name: _unnamedTask<9D>
Status Code: -89137
Any Help
Hello Everyone,
So my friend made a VI in the Student Suite 2016 and gave me a copy. I opened his VI on my laptop with the 2017 free trial version of labview. The purpose of the code is the gather pressure and thrust data from 1046_0 Phidget Bridge. I edited the palette to incorporate the phidget bridge VIs. I saved them under C:\Program Files\National Instruments\LabVIEW 2017\user.lib.
For some reason labview stops responding when I run the VI. Down below are screen clippings of the errors I received. I think the error is due to labview searching for the phidget bridge VIs with wrong directory. I also tried repairing labview incase there was a bad install. It also did not work.
Screen Clippings
Any Information Would Be Appreciated!
Thanks
Hi,
we have constructed laboratory experiment used for level measurement. Idea is to educate students about level measurement.
We have two tanks. Bottom one is used as water container, and upper one is used as tank where we measure level. We use pump for getting water from bottom to upper tank, and valves to control water direction. You can find process scheme lower in message.
For level measurement we use Siemens sensors: capacitive, radar, ultrasonic, submersive probe (hydrostatic pressure) and weighing system. All of this instruments use 24 VDC power input (3000 mA). Their output signals are connected to NI USB-6008. Solenoid valves are controlled using digital signals from USB-6008.
There are two situations that happen.
First situation happens when I connect USB-6008 to my laptop. Radar, submersive probe and weighing sensors are working correctly and measurement signals are accurate. Capacitive and ultrasonic sensors are not working correct. Their signals are not as they should be and also there are screens onboard these instruments, which are not showing anything. From this I conclude that there may be a problem with powering up these instruments. Digital control signals for valves are working correctly.
Second situation happens when I connect USB-6008 to PC connected to 220 VAC. In this situation none of measurement signals is correct and digital signals sent to valves are not working, but all sensors are powered up ( onboard screens are working and there is characteristic sound coming from ulstrasonic sensor). From this I conclude that in this situation there is something wrong with my DAQ.
From everything written I believe there is some problem with electrical connections. Either there is not enough power from power source (24 VDC, 3000 mA) or there is some problem with grounding.
Below I attached process schematics.
I look forward to reading new ideas about this problem.
Regards,
Hrvoje Dorić
I want to generate exactly 20kHz sine waveform on my NI9263. How I can do that? How I can set the number of samples and the sample clock rate? Some one can help me?
Thanks
I want to protect X series (6320) analog inputs from overvoltage. The inputs have a maximum impedance of 100k (usually lower). It can happen that one or two of the inputs are connected to 70 volts. This can happen with the computer on or off. I want to protect the DAQ card from overvoltage damage. It doesn’t matter what the card returns when the voltage is out of range.
I don’t want to load the input when the voltage is between 0 and 10 volts.
http://www.ni.com/datasheet/pdf/en/ds-152
From this document, the specifications are:
Maximum working voltage for analog inputs (signal + common mode) ±11 V of AI GND
Input impedance Device on AI+ to AI GND >10 GΩ in parallel with 100 pF
Input impedance Device off AI+ to AI GND 1200 Ω
Overvoltage protection (AI <0..31>, AI SENSE, AI SENSE 2) Device on ±25 V for up to two AI pins
Overvoltage protection (AI <0..31>, AI SENSE, AI SENSE 2) Device off ±15 V for up to two AI pins
Input current during overvoltage condition ±20 mA max/AI pin ±20 mA max/AI pin
How can I protect the DAQ card? A 10K resistor in series with the AI input, would limit current to 7 ma. This should handle the device off situation. 10K should be insignificant compared to the 10 GΩ input impedence of the DAQ. A Zener diode could clamp the voltage but I am concerned about the leakage current.
I am developing code that eventually I want to run stand-alone on my cDAQ-9132. Currently I am developing with a laptop running LV 16 and am able to control the cDAQ remotely. I am able to hook up a monitor to the cDAQ and see my code run remotely as well. What I need is to be able to control the front panel without using my laptop.
I am following the instructions here but on line 2 when it says right click build specifications ->new->real time application, I only see New->Source Distribution. Do I need to purchase and install the Application Builder as well? I thought I didn't since the cDAQ is a real-time device. Any advice would be helpful.
Thanks,
Micah
I have a cDAQ 9132 running LV real-time on Linux OS. Eventually it will be running standalone with just a monitor and keyboard to control it. I need some way for the user to retrieve the data being stored, other then taking out the SD card each time. That would not be very convenient for my test set up. Is there a way to programmatically copy the data to a USB drive once its plugged in. Can anyone point me to any examples?
I tried to generate a sweep from 1hz to 20khz with NI9263 setting the sample clock at 100khz but connecting the oscilloscope I see a sinewave not smooth already at low frequencies around 1000-2000hz. I tried to put a low pass filter after the daq and the situation improved. Is this the solution?
Taking input in ni9215 sampling at 40khz a sine wave around around 20khz I see beats instead of a sine wave. I tried to put a low pass filter at 20khz cut rate but I did not see significant improvements. I tried to bring the sampling rate to 60khz and using a kistler signal handling device to filter at 30khz but it does not improve the situation a lot. Do you know how to help me?
Hi,
I am using NI cDAQ-9133, and currently NI MAX and NI device monitor are able to detect the cDAQ controller but it shows 'no device found' under 'Real-Time CompactRIO' option in Add Targets and Devices Dialog Box when I try to use LabVIEW, as the figure shown.
And here is the list of the software that I have already installed
Please help me out, Thanks so much!
Hi,
I have a cDAQ-9174 compact daq with two instruments: NI9403 DI/O and a NI9205 analog input.
I have a signal coming to the NI9205, that I trigger correctly, and I would like to send a signal (just a level high) when I receive it to the ni 9403.
At the moment, without syncronization, the output signal is randomically delayed. What I would like is a fixed delay, after the trigger occours on the analog input.
Attached the file.
Thanks in advance.
Lorenzo
Hi All,
We use a couple (6) USB-6008 devices in our production facility where they are used to measure three signals. Two of them come from an analog distance sensor (Wenglor CP35MHT80) and the other comes from a potentiometer.
Everything normally runs fine for weeks, but then all of a sudden, some of the values (usually only one at a time) start to fluctuate somewhat. Although the potentiometer was kept in a steady position, one could see the values slowly change over time. This would create an offset that could result in several volts of error...
In the past, when they called me, I opened the box where the USB-6008 was in and tried to measure all voltages with a DMM and could not find a problem. And every time I did this, the problem disappeared.
Lately I close the software application first and start a test panel with NI MAX. I could then see the mis read. But when I then open the box and touch the USB-6008, the problem disappears! Yesterday I ran in the same situation. I could see the mis read in NIMAX. When I very gently pushed the black connector I could see the signal change. When I pushed it a bit harder the error was gone! It worked fine the rest of the day.
I have this problem on several (if not all) setups. It happens with all inputs. Yes, I have checked all screws and wiring for connection. All second analog inputs are connected to ground, to avoid floating inputs. Digital I/O are unused. On one setup we even put a ground wire from the analog ground of the USB-6008 to the ground of the PC.
My question is mainly to find out if this is something that some of you may also have experienced. Might this be due to bad connectors, or could it be me having missed out on something...
Is it possible to supply negative voltage to an active transducer (-24V) with an NI multifunction DAQ
I'd like to use the PXIe-6358 analog input with NRSE or RSE configuration. But when I try to set the mode to anything else than "Differential" I get:
DaqError: Requested value is not a supported value for this property. The property value may be invalid because it conflicts with another property.
Property: DAQmx_AI_TermCfg
Requested Value: DAQmx_Val_NRSE
Possible Values: DAQmx_Val_Diff
Channel Name: Dev1/AI1
Task Name: _unnamedTask<2C>
Status Code: -200077
I could not find any information in the Datasheet, Specification and API Documentation that says that the PXIe-6358 does not support NRSE, so I do not understand what is the problem here.
I have built a VI on my development machine and everything appears to work well, however when I compile the application and installer for another machine the app runs but does not pick up any of the data from the USB-6001. If I run the application on my development machine it works perfectly. I'm guessing it's a driver issue with the installation.
I'm using the DAQ assistant to acquire the analog signals.
Any help would be greatly appreciated, thanks...
Richard
Making a connector saver pcb to replace the the SCB-68A and I'm having trouble finding the part number for the 68 pin connector.
I think it's the mate to this part: http://sine.ni.com/nips/cds/view/p/lang/en/nid/204670