Filtering of the physical channels

Similar Questions

• Select the physical channels of front panel

  Hi all

  Currently, I am trying to build an execuatble file which is dummy proof and has variations of the application is available.  I'm currently trying to give the user the opportunity to select the physical channels of the façade, through a group of check boxes or buttons... etc.  Then I have an array of strings containing all the names of the channels. I tried to run it through a loop with a structure of business inside and what false, the column of the table would be removed.  Instead, I get a blank table column, what does not work when he goes to the node of the active channel.

  So in short, how can I remove this column of the table in a loop for?

  Here's a picture of something ive been trying.

  Or is there an easier way to call from the front channels, im all ears.

  Thank you

  
  

• How to get the physical channel for USB card as ENET

  Hello

  For my application (VB .NET, using NIDAQmx 8.8), I need to access the 2 cards:

  a USB-6008 and an ENET9163.

  I would like to read the physical channels automatically with this feature NI-DAQmx

  Physicalchannel1ComboBox.items.AddRange (DaqSystem.Local.GetPhysicalChannels (PhysicalChannelTypes.AI, PhysicalChannelAccess.External))

  Unfortunately, he didn't get a single card at once.

  When the USB card is connected, he read the physical channels of the USB card

  When the USB adapter is not plugged in, it read the physical channels of the ENET card.

  I hope someone can help me with this problem!

  Thank you

  RB

  Hello RB.

  To read from multiple channels, you can enter in the drop-down list box "Physical channel", the comma separated channels, custom channels or if you read physics, the string "DevX/Benjamin: Z", where X is the number of device, and X and are the first and the last channel you want to analyze (for example to read to ai0 to ai4 from your device 1 enter "Dev1 / ai0:4"). Among the names of your channels, I guess they are global channels created in MAX? You can always read channels multiple and different advice by separating the comma.

  I hope this helps!

  Kind regards

• Duplicate the physical channel with virtual channel

  I accidentally created more global virtual channel with a single physical channel, for example:

  global virtual channel physical channel

  A0 vtc00

  A0 vtc01

  A0 vtc02

  My questions are:

  1. How can I change the virtual channel as follows:

  global virtual channel physical channel

  A0 vtc00

  A1 vtc01

  A2 vtc02

  2-How do I re-name/remove the virtual global channel, when it is not in the task?

  Thanks for your time, Dylan

  Hello Carisa,.

  I decided to go head re - install the DAQmx tonight and re-imported the right config file known about it.  So far, all global virtual channels are now under the management of devices and interfaces plus all unwanted virtual channels have disappeared - Yippee!  I tried to browse a unit test to make sure that the virtual channels work too, they seem good.

  Finally, the issue is resolved.  I would like to say thank you to you for you and Roberto Bozozlo have spent the time to help me through this.

  Sincerely, Dylan

• Selected physical channel DAQmxCreateAIVoltageChan OR-USB-9237 VB6 does not support the type of action required

  I have a VB6 program with code that correctly reads the analog inputs of a NOR-USB-6008.

  I tried to re - use the code in a module of extensometer OR-USB-9237, but at the stage of DAQmxCreateAIVoltageChan, I get the following error:

  "Measurements: physical channel selected does not support the type of measure required by the virtual channel you create."

  Create a channel to a type of measure that is supported by the physical channel, or select a physical channel that supports the type of measure. »

  Should I call one function other than DAQmxCreateAIVoltageChan?

  If so, what is it, or where can I find the reference for these functions?

  Or - if it of the right function, should I pass different arguments?  Currently, I'll call you:

  DAQmxErrChk DAQmxCreateAIVoltageChan(taskHandle, "Dev1/ai1", "", DAQmx_Val_Cfg_Default,-10, 10, DAQmx_Val_VoltageUnits1_Volts, "")

  Thanks in advance for your help

  -Alas

  I thought she 372251a. PDF

  Firstly, the correct function is DAQmxCreateAIVoltageChanWithExcit

  Second, you can't just ask for a sample single channel - ask for 2 samples instead.

  -Alas

• Discover the number of physical channels

  When you configure a DAQmx device in LabVIEW code, is there a simple way to discover and to report the number of physical channels that have been selected?  I looked for property nodes to do this, use the "Physical channel" control as well as the indicator 'task out', but I have not found anything so far.  Any help would be greatly appreciated.

  Found!

  Measurement of e / s-> NI - DAQmx-> Advanced-> Confi task-> task node-> NumChans (number of channels)

• get the number of wired physical channels?

  Hello

  I need to create a Subvi, and in this sub - VI, it is important to know the number of physical channels connected to the entrance of the Subvi.

  Is the only way to do than writing another "channel search and County" - Subvi, which examines the "physical" channels - wire? Something looking for a ': 'and',' and who treats this information then.

  Or is there a better way to do it?

  Or has someone already written such a Subvi, which counts the number of channels wired?

  Thank you very much

  Andy

  If you ask to know how many channels is in a physical channel DAQmx? If so, just the physical channel to Unflatten DAQmx channel chain wire. You'll get a table. The size of table function will give you the number of channels.

• combine two daq physical channels in a single task

  Hi all!

  I use a PCI-6120 with a BNC-2120 to generate two signals: one is used to control an optical device which must be characterized, and the other signal is sent to a digital video camera to trigger the acquisition so that it is synchronized with the first signal. Everything is controlled with Labview.

  I want to give the possibility to the user to choose which channel to use for the first signal and channel to use for the second signal, depending on how the devices connected to the BNC-2120. So I would like to put two different "physical channel" screws on the Labview command window.

  My question is:

  What I need to create two different tasks to the signals to be generated on the appropriate channel, or can I combine two channels (and how?) think I handle only a single task to two channels always but do not forget that each signal is generated on the corerct channel, depending on the channel selected for each of the two signals...?

  Thanks a lot for your answers.

  Nice day.

  Luke

  Hi LucG,

  If you use only a single Council to create only a single task for two generations.

  You can choose several channels by clicking on "Restaurants" in the channel control physical choice multiple channels thanks ctr + click, or by concatenating multiple channels with a comma as on arrival at the VI.

  Then, when you provide data to the VI of writing, the data should be organized in a table, each channel is on a line and the order of the channels is the same as in the control of the physical channels.

  I hope this can help!

  Thank you

• cRIO 9076 Unable to Detect physical channel

  Hi all

  I'm currently trying to acquire data using NOR cRIO 9076 controller integrated, but I am unable to create virtual channels using DAQmx. My situation is summarized below.

  Material:

  NEITHER cRIO 9076 integrated controller RT

  NI 9205 analog input module

  E/s digital NI 9403 module

  Software:

  LabVIEW 2011

  Compact-Rio 4.0

  MAX 5.0

  NOR-DAQmx 9.3

  All channels of the C-series module and chassis are visible in NOR Distributed System Manager and Labview Project Explorer.

  

  But when you use MAX to create a new task DAQmx, I can't detect the physical channels. The two NOR-DAQmx in Labview and right-click to headquarters of the MAX data to create NI DAQmx task / Global Virtual Channel give the message "No. supported Devices Found."

  

  In addition, material also doesn't seem to appear under "devices devices and Network Interfaces.  When comes to "find NI DAQmx your network equipment", he stated that "no devices were found. The controller was named "VIGREN. Detect manually by using the host name and intellectual property also failed to detect.

  

  My question is:

  1. How does the PC detects the chassis and modules, but when it come to NI DAQmx, it does not detect the physical channels? What is a software/hardware or network junk?

  2 not compatible with NI DAQmx RT 9076 cRIO controller? And that's why Scan Interface or Interface FPGA used instead? In light of the seamless functionality, I prefer to continue OR DAQmx to configure my acquisition of data.

  Thank you.

  Hi Vigren,

  I think you misunderstand some of the concept here.

  cRio is a real-time system and is not a DAQ board that you can not use DAQmx with it.

  You can refer to this link for discussion for more information

  http://forums.NI.com/T5/Multifunction-DAQ/cRIO-9073-compatibility-with-NI-DAQmx/m-p/1194163#M58721

  You can use the scan or FPGA to purchase.

  TuiTui

• call by reference and physical channel OR DAQMX

  Hello

  I call a VI of reference and one of its entries is a physical channel OR DAQMX.

  Normally when I call the VI (no ref) control of the physical channel OR DAQMX fill itself with a list of detected devices / channels.

  Still by reference it does not work because I'm the appellant on a server of VI. He shows me the channels on the local computer instead of the remote computer.

  How will you address the list of physical channels OR DAQMX on a remote machine?

  Here is an excerpt of how find my DAQ card by searching all DAQ hardware in the system, and then query string types I want. Note that this must be running on the remote system. Perhaps could you run on the remote system and use the TCP/IP, Messaging Protocol to transfer the results?

  Charles

• Constant physical channel error DAQmx

  Hi all

  I try to get the labview 10.0 working in opensuse 11.4. I installed components and all of them seem to work well.

  The PCI card is also detected by labview. When I lsdaq of tpe on the command line. I get the following output

  --------------------------------
  Detect of National Instruments DAQ devices
  Find the following materials:
  NEITHER 6025E: "Dev1" (PXI8::15:INSTR)
  --------------------------------

  But when you enter ' Dev1/ai1' or ' Dev1 / ai0:3 "in the the physical channel DAQmx constant I get an error stating that the invalid string name. How can I get rid of this error?

  Necklace

  Hello Chiran,

  You use DAQmx 8.0.2 or use DAQmx Base 3.4? If you use DAQmx Base, then you will need create a task before you create channels.  "" Try to run an example program which can be found by navigating to help"find examples" material input and output "DAQmx if you have DAQmx 8.0.2 and can be found in /examples/daqmxbase if you have DAQmx Base 3.4.

  Thank you

  Justin P

• ini to physical channel DAQMX channel

  I would like to save all my physical channels DAQMX as strings in an ini file.  My program reads information in string and convert to the physical channel DAQMX.  Is a kind ride the only way to convert a string to a type of DAQMX channel?  I wanted to tell all of my information communications in an ini in case something change.  Thank you!

  Not cataloged. You can wire a string directly to the entrance of the channel.

• Devantech TPA81 read temperature table "physical channel be unspecified.

  Hi, I'm new to Labview.

  I need to use a heat of TPA81 sensor in my Dani robot project, so I found the 'Devantech TPA81 reading temperature table' example in examples of robotics. I connect my sensor with a USB - I2C converter and then connected to my PC. I run the program, but the problem "the physical channel is not specified" still exists. How to choose the physical channel in labview for the clock channel and the data channel?

  Could someone please help me and thank you in advance.

  Jason

  Hello.

  The example given here "Matrix of the temperature read Devantech TPA81", works with acquisition cards supported by the driver "DAQmx" therefore, I think that this will not work with a simple "USB - I2C" converter.
  Now, on the other hand, if you just want to work with the "TPA81" sensor in the robot, DANI, you could see the example "Devantech TPA81 (FPGA). Lvprog' in the help of LabVIEW, where, in the "target FPGA", you will find the VI "Devantech TPA81 (FPGA). saw', where you can configure the channels (data and clock).

  

• Cannot read the digital channels as physical on USB 6008

  Hello world

  Sorry for maybe a stupid question, but I'm stuck and can not find the solution.

  I can't read my outputs digital my USB-6008 as physical channels but only as global chains. Is this normal? What can I do to work around this problem?

  Thank you, any help is very appreciated.

  

• The actual voltage of a physical channel of a DAQmx device display

  Hello!

  Quick question: is there a way to read the voltage of a physical channel of a DAQmx device, when there is no task that is running? I want this information after that I ran several tasks. It is important to know the real tension before you start the new task. Any ideas? Thank you!

  Best regards

  Michael

  Hello Michael,

  You are right.

  The 'PCI-6110"and the «PCI-6711" have no internal channels.»

  Could you please describe your exercise.

  Why do you want to know your output voltage before you start a new task.

  Best regards

  Phanuel