unrecognized cDAQ chassis

Similar Questions

• Physical connections using 4 counters with NI 9411 cDAQ chassis 9178

  Hello

  Currently I have a NI 9411 module in a 9178 cDAQ chassis.  I use 2 meter to read the frequency measures.

  The NI 9411 pinout diagram (see pdf file attached to this post), here are the links that I did:

  CTR 0 SRC, pin 1 ground COM

  DOOR of the CTR 0, pin 2 to the first signal of frequency

  CTR 1 CBC, PIN 6 COM/ground

  CTR 1 DOOR, pin 01:53 frequency signal

  The problem now is that I had like to use meters of 3rd and 4th in my 9178 cDAQ chassis, but I am confused how to wire

  frequency signals in 3rd and 4th, because CTR2 GATE is pin 1 and GATE CTR3 is pin 6.  Can I change the assignment of pins

  to use the other pins in the NI 9411 module for frequency counter measures?  I didn't understand how to do this in MAX

  Configuration.

  Thank you

  Anna

  Hi EETDer,

  Using 'C-Series Signal connections for counters that you found is a good resource.  One thing I want to point out, that's a measure of the frequency on a single meter, simply connect the source of the signal up to the door of the RTC.  Internally, the module will forward a database internal time appropriate to the source of counters, so DO NOT want to connect the Source CTR to the mass.  On your device, you will be just wire each signal to the source of the meter, so only utilizting pines 1,6,3,8 for your 4 frequency measurements.

• is it possible to check progrommatically if cdaq chassis is used

  Hi all

  IM writing a program who book a cdaq chassis, but I want to know if data acquisition is in use before taking control of it.  Is this possible in the code?

  Thank you

  The purpose of book is to block all communications with the device and let the reserving computer to have full access. I suggest you just cancel when it is not in use, allowing the other connections to support.

  Separated from the cDAQ chassis, if you have multiple computers on the same network as I assume you are, you may have published network variables that tell other computers on the network if the chassis is in use. It's pretty much a a work-around to be able to know if the chassis is to apply vs not used regardless of the booking.

• By cDAQ chassis module names?

  Hi all

  is there a way to get the module name based cDAQ chassis?

  I'm just checking if two (or more) identical chassis with different modules are connected to my PC.

  Example:

  Module 1: cDAQ-9174 with Modules 'A', 'B', 'C', emptySlot, in the right order

  Module 2: cDAQ-9174 with Modules 'd', 'E', 'emptySlot', 'emptySlot '.

  Problem:
  The property 'ActiveDev' node, then recovering the ProductType output array of [cDAQ-9174, cDAQ-9174, A, B, C, D, E,.. .and system peripherals]

  I do not see the modules are plugged into the chassis.

  Any help is appreciated!

  Thanks in advance

  Achim

  Hello Achim,

  Please see the attachment or the screenshot for the requested features.

  The example is a modified version of this example:

  Community: Get the cDAQ Types of Module in LabVIEW - National Instruments
  https://decibel.NI.com/content/docs/doc-15978

  If you wanted to say something different, just write me again.

  Best regards

  Christoph

• Problems with NI-VISA 5.0.3 detect a 9474 cDAQ chassis and modules via USB

  Hello friends.

  I'm running Windows 7 x 64, I installed MAX 4.7.4, NI-VISA 5.0.3 and the other software that comes with them.

  I have a 9174 cDAQ chassis and 3 modules.

  My problem: when I connect the hardware to my PC via the USB port, it presents itself to the MAX, but NI-VISA does not detect sub "USB" (or elsewhere).

  Purpose: What I'm trying to do is communicate with the NI 9223 module, using VISA through MATLAB commands.  The MATLAB data acquisition Toolbox supports not the NI 9223, so I would try to acquire help from VISA.  However, I don't find the VISA of the device address.

  I would like to know your opinion on why modules are not displayed in NI-VISA and if my ultimate quest is valid without doing something nasty like writing C++.  I have not found a good source for VISA OR orders either, but I'm sure it exists.

  Thank you!

  Wes

  Hey eccentricorbit,

  Unfortunately, you can't talk about a module using VISA or cDAQ chassis. Your options are DAQmx and low level of coding (something nasty like C++). If you do not get DAQmx, you can find excellent examples by accessing:

  "" "Start menu" National Instruments "NOR-DAQ ' text Code support ' ANSI C examples

  I hope this helps!

  ~ kgarrett

• Cdaq chassis query for configuration

  I am trying to find a way for Labview correctly detect the number of modules in a CDAQ chassis. The code below will create a MAX configuration file and analyzed to find what I need properly. I'm picking up even if you add a module. But if you remove a module or even disconnect the chassis it still gives the maximum number of modules that have been installed, not the current number.

  Is there a way to get the MAXIMUM for updating its configuration when appropriate or a way of questioning the chassis directly?

  Thank you

  

  Assuming that you use DAQmx, I think this is what you need:

  

  Just go in the table, one at a time and get the info you need from the nodes property.

• How to 'book' an Ethernet cDAQ chassis based in software without using MAX?

  I am using a cDAQ 9188 with Ethernet interface. It works fine, but the Setup is a little more than I like for end-users. Users are all first go to MAX and do make a connection. After that, users must 'reserve' the chassis to ensure access to it. This isn't a problem except that I still have to find a way to make the code G. I have rather not in my documentation would include a series of steps require that the user enter MAX whenever they want to turn on the system. I would have preferred it is comparable to a USB DAQ experience where it works.

  All the examples there or suggest on properties, methods or screws to use for my situation?

  You'll want to use the DAQmx reserve Network Device.vi, under measures of e / s-> DAQmx--> DAQmx advanced-> configuration of the data acquisition system.

  

• Many signals with ditch (NI 9229 and NI 9205) devices multi 9188 cDAQ chassis

  I use a chassis equipped with 9188 OR cDAQ with 6 x NI 9229 (6 x 4 HAVE simultaneous chnls sampled with aliasing filter) and a NI 9205 (32/16 HAVE chnls single/premium multiplexecd chnls). I created a simple mind task the DAQ Assistant to acquire 12 chnls with the module NOR 9229 modues and 4 with the NI 9205 module. A generator is used to produce a sine wave with a frequency of 10 Hz and an amplitude of 500 mVpp as input to all channels. The same generator also produce a square wave (synchron to sine) which is used as input trigger (PFI 0 - BNC connector on the chassis). The acquisition is expected to have samples end up a flow of 2 kHz and a datalength of 4000 samples (this means a time of acquisition of 2 seconds) controlled by a digital reference triggered with the cADQn/PFI0 as a source of relaxation.

  My problem is the time difference between signals acquired with the NI 9229 module and those acquired with the module NI 9205 (see the attachment). The time difference is not constant and change when the frequency of the input signal varies. I guess the difference is due to aliasing filters used in the NI 9229 module and I'm looking for how to resolve the situation. Any help will be appreciated...

  Philippe

  By the research and reading, OR knowledge base I solve the problem by making a dummy read on the NI 9229 channels before reading from the device OR 9205.

  According to the specifications of the NI 9229 module, there is a delay of filter (digital filter) of more or less 40 samples that are present only in the case of a digital triggering.

  Reason and solution of this problem are explained here: http://digital.ni.com/public.nsf/allkb/F989B25FF6CA55C386256CD20056E27D.

  I have applied the solution presented in this paper and this is excellent work.

  Now, this problem is solved.

  What about a whole, Philippe

• Cannot start multiple tasks on a cDAQ chassis

  I run several modules in a chassis OR cDAQ-9172.  1 is a NI 9213 TC module.  2 is a module of TC 9211.  I can create and start a job on Mod1, and I can create a task on Mod2.  However, when I try to start the task on Mod2, I get error-200022, "resource requested by this task has already been reserved by another task."  I've never had this problem before.  I hope I'm missing something obvious.  If anyone can help, I would appreciate it a lot.

  For older 9172 - http://digital.ni.com/public.nsf/allkb/F18193C0F115B12586257C62006615DA?OpenDocument

• Suggest the cDAQ chassis applicable

  Hello

  In my application I will use a NI 9476, 9264 One, One two 9485, two 9265 9435 IO modules offer me please the appropriate chassis that I can use these modules.

  Thank you

  Prashant

  Hi, UPRR. You'll use 7 modules of data acquisition for your application, correct?

  In this case I recommend you to get either:

  1 NOR cDAQ-9188 - http://sine.ni.com/nips/cds/view/p/lang/en/nid/208990 - Ethernet connectivity

  2 NEITHER cDAQ-9178 -http://sine.ni.com/nips/cds/view/p/lang/en/nid/207534- USB connectivity, BNC connections for external clocks and 32-bit counters built into the chassis.

• synchronize two cDAQ Chassis with DAQmx 9188

  I try to sync analog entry tasks on two 9188 Chassis utilzing the build in the BNC (PFI 0 and 1) ports.  I also have digital entry spots on the chassis of the master, I want to synchronize. Have been referencing http://www.ni.com/tutorial/5376/en/ and examples, I am not sure I have it set up correctly.

  From the link above, I exported the SampleCLK to PFI0 and StartTrig to PFI1 on the chassis of the master.  I have two BNC cables routed between ports on the two chassis.  I put the trigger DAQmx start on the slave to the PFI1 source (this does not seem to do both tasks at the same time), I tried to adjust the pitch of the DAQmx (sample clock) of source PFI0, but it creates an error (requested sample clock source is not valid).

  I can get the application of test runs by seting the slave clock "OnboardClock" sample source  When I use this setting, the task two seem to start at the same time, but I don't think the slave chassis uses the master module sample clock and therefore might drift over time?

  I would like to know how to properly synchronize the two analog tasks.  I also want to synchronize digital tasks on the main frame with the analog task.

  Hello

  If you want to synchronize the two tasks, you share examples of clock and triggers via PFI lines. The only exception is that it is not currently possible to synchronize tasks between the chassis that use AI modules with delta-sigma a/d converters.

  Best regards

  Villanueva of the DSL.

• OR unrecognized cDAQ-9174

  Hello, I'm not sure if it's good advice, but here goes.

  I have a USB OR cDAQ-9174, I try to use with LabVIEW 2009 and DAQmx 9.1. After you install LabVIEW 2009, I thought he had DAQmx and device drivers installed with it, so I plugged in the cDAQ. Then I realized my mistake and installed the disc that came with the cDAQ DAQmx.

  Unfourtunatly, the device is not recognized by SignalExpress or MAX. She appears in the Manager of Windows devices like "cDaq-9174" under the heading "National Instruments Device", but the monitor of devices OR never detected the device.

  I uninstalled then plugged DAQmx cDAQ without success, then uninstalled the driver from Device Manager and uninstalled DAQmx new and trendy cDAQ, same case. I'm now uninstall all software from National Instruments to try to solve this problem, if it doesn't work I have really no idea what to do.

  If someone could help, it would be great. I'm working on a HP desktop computer.

  Luke,

  If you get this message in time, hold off the coast on the Windows reinstall, there's another step I want you try if possible.  Follow the steps in this KB (completely delete the data folder in step 7): what is the process to remove MAX Database Corruption?

  I hope that this will be a less painful way to address the issue.

• When setting up my Ethernet 9188 cDAQ chassis, 88705 error was encountered

  
  

  Hello Joseph92,

  I just found a very similar case, where the error has been resolved by repairing NI DAQmx and NI LabVIEW. You can do this by going to the Control Panel/uninstall or change a program/software from National Instruments, then choose all DAQmx and NI LAbVIEW options and finally click on repair.

  It seems that the problem is in a LabVIEW web services configuration. And repair software to fix this problem.

  Greetings and let me know if this was helpful

  Guillermo O,.

• How to connect the chassis cDAQ for strain gage

  Hi, when I read the guide of the extensometer of wiring on a chassis cDAQ (http://www.ni.com/white-paper/7130/en) I found confusing fig 10 .

  What are the things between the chassis and the extensometer?

  The three wires go only one channel of the cDAQ chassis? (in Fig 10, on channel 0?)

  Why there are four terminals (CH + EX + QTR EX-) on the strain gauge, but there are only two wires coming out of my extensometer? What should I do?

  PS. I have a USB-4431 cDAQ and a Vishay extensometer (http://www.vishaypg.com/docs/11297/250lw.pdf)

  Thank you very much!

  Elly

  ZSH2010,

  The 9219 will work.   You will need to use a measure of Bridge 2 son resistance measure quarter vs.  For more information about how to use the 9219 for 2wire resistance measurements, take a look at the 11 and 15 of the document specifications page

  http://www.NI.com/PDF/manuals/372407a.PDF

  It will be slightly less accurate than the quarter for the 9237 bridge accessory, but still needs to do the job.

  Kind regards

• new cDAQ-9178 chassis was smaller than the cDAQ-9172 old buffer?

  Digital waveform features:

  Waveform acquisition (DI) FIFO for cDAQ-9172: 2047 samples

  Waveform acquisition (DI) FIFO for cDAQ-9178: 127 samples per slot

  This means that the new HW (9178) has a much smaller than the old buffer (9172)!

  I want to run a correlation over generation/acquisition at 2 MHz with 2000 samples. Does this mean that the new chassis will not be able to acquire the whole of the data (I use a NI 9401 module inside the chassis)?

  FIFO sizes are misleading and not a true indicator of the chassis supporting the streaming is not the single buffer.  We did some tests comparing the latest and cDAQ-9172 chassis.  You will not notice the difference, especially with your application to a finished task of 2 000 samples at 2 MHz.  With 2 000 samples, you can run your DI task on your chassis cDAQ-9178 at 10 MHz if you wanted without problem (don't try with continuous or even finished tasks).

  The only time where the FIFO size really comes into play is when you run a primary task at high rates, say > 5 MHz, even if it is system dependent.  At these speeds a FIFO that is deeper 2 000 samples you buy only tens or hundreds of additional microseconds when Windows jitter is measured in milliseconds.

  I would be very surprised if there is a practical application that worked on a cDAQ-9172 chassis which did not work on newer USB cDAQ chassis.