Similar Questions

• set up a placeholder or virtual DAQmx SCXI task?

  is it possible to implement a task DAQmx SCXI without having any SCXI hardware?  I don't have access to the material and I was wondering if I could create a "virtual task' for my SCXI program before gettting the material?

  Thank you!

  Yes.  Go to measure Automation Explorer.  Devices and Interfaces, do a right click, create new ones...  You can then select Virtual Instrument or NOR-DAQmx simulated device.

• communication with DAQmx SCXI

  Hello

  I have a problem to connect with a SCXI-1540 module.

  In MAX, I see the module, and I put the "data area" a task NEITHER-DAQmx to reed the voltage on the input.

  I see a standard value of 5, 38V even if I change the entry.

  I missed a setting?

  
  

• Can I multiplex data inputs direct-DAQ PXI and SCXI?

  Hello

  In a PXI chassis - SCXI - combo PXI1052 (PXI-6602/6052E/SCXI1112/1125, LabVIEW 7), I know how to read the different SCXI Modules in multiplexed by DAQboard controller mode

  e.g. SCXI module 1 - module 2 SCXI data - SCXI module 3 data - data of the module 1 SCXI module-...

  However, I would like to use the direct entries in DAQ cards as well. for example

  PXI MIO grabs - SCXI module 1 data - module 2 module SCXI - SCXI module 3 - inputs PXI MIO - SCXI module 1 data-...

  I couldn't find a solution in the documentation or discussion. Thus, this task can be a) impossible or b) trivial. The obvious solution to use 2 different PXI-MIOs is only as a last resort.

  Thanks for your help.

  Michael

  Hi Michael,

  You can add HAVE strings of the MIO to the same task DAQmx SCXI modules. If you use the DAQ Assistant, hold down the ctrl or shift during the selection of channels to select channels from multiple devices, or click the '+' to add more channels to a task existing DAQ Assistant. If you use the DAQmx API directly, go ' PXI1Slot4 / ai0:15, SC1Mod1 / ai0:7, SC1Mod2 / ai0:7 "(or something similar) in the DAQmx setting create channel physical channels. You can also call DAQmx create channel several times with the same task handle, which is useful when multiple channels must measure different types or channels of communication.

  Brad

• Auto-trouvez modules SCXI (in the slot machines) with DAQmx

  I have a client with an older SCXI system that I'm upgrading.  While replacing the traditional DAQ options, I would like a routine without configuration code for them (or as close to zero as possible).

  I can find SCXI modules using the properties of the DEVICE, but I can't identify exactly which locations, they are in.  I have aliases are in alphabetical order, it works, but if they do not mess with them.

  Any ideas?  MAX seems to know...

  Hi Jed,

  You attempt to convert a traditional DAQ MAX configuration programmatically in a configuration DAQmx MAX or something else?  The DAQmx API does not expose the ability to query a SXCI module slot number.  I suggest you take a look at the API of the System Configuration OR (http://joule.ni.com/nidu/cds/view/p/id/2613/lang/en).  The 'Material' of the System Configuration API class property node contains a number of Slot property that should return the number of appropriate housing.

• DAQmx and SCXI-1160 with 'DAQmx switch Open Relays.vi '.

  Hello

  I use DAQmx to pass the baton on a map of SPDT 16 SCXI-1160. When I run the 'DAQmx switch Open Relays.vi' with the entry "ch0/SC1Mod1 / ' I think the relay normally open position 'NO '. But this is not the case, the relay is in the position of the NC. Here are the steps I do a simple VI.

  1. define the topology of the 'SC1Mod1' to '16/1160-inverter.

  2. call the 'DAQmx switch Open Relays.vi' with the string "/ SC1Mod1/ch0.

  3. then I take a physical measurement, with a multimeter on the SCXI-1324 terminal block and the relay is in position "NC".

  4. If I run the "DAQmx get relay switch Position" he's back "Open"!

  Is this the good behavior, and if so can someone explain the logic behind it.

  Thanks in advance,

  Michel

  Hey Michael,

  Sorry, I didn't know that you were actually able to control the relay and you receive just the reverse logic. To answer your question, on the SCXI-1160 module, there are three connections for each channel: COM, NO pine and pine of NC code. Reset, COM is connected to the spindle of the NC. When you issue a command to OPEN channel 0, COM will stay connected to the NC pin, even if the software indicates now that the PIN is open. When you issue a command NARROW-gauge 0, COM will be now connected to pin number and not on the spindle of the NC.

  A better way to think of it, is to focus only on the relationship between COM and no. pine. When you send a BLANKET order, this connection between COM and no. will be open. When you send a CLOSE command, the connection between COM and no. will be closed. Consult this manual for a visualization of how this switch is set up: http://www.ni.com/pdf/manuals/320513b.pdf. Refer to page 2-9 and 2-14 of this manual for pinout.

  -Nathan H

• SCXI-1160 with 'DAQmx switches Open Relays.vi' list of syntax of relay.

  Hello

  I re - write a request for a RT PXI controller that handles of many SCXI-1160 relay cards. We want to abandon traditional DAQ to DAQmx. I don't have the controller with me and I would like to know the syntax to use in the list of relays for the 'DAQmx switches Open Relays.vi". I want to use this VI as a command "several relays. I did a lot of research without success.

  I need the syntax that take into account several chassis, several cards, relay and individual relay range.

  Any help?

  Thanks in advance.

  Michel

  Hello Michel,

  Sorry for this confusion.

  You can find some general examples for switches of programming under help > find examples in LabVIEW.  I would go to the output material & > DAQmx > switches and check out some examples below to see if any programs already exist for your goals.

  As for your specific question, at the beginning of each program, you must DAQmx switch topology Set and Reset.  This allows the users to define the topology of the switch for each individual switch card in a chassis.  A good community it shows a simple, you will find a complete example of using these two screws, we discussed here.

  Finally, the SCXI-1160 is an electromechanical lock change, so in the case of a power outtage, the switch will retain its State.  However, switching on, all default relay to their States normally connected.

  Thank you!

  Lisa

• VB6 with DAQmx compatibility with Microsoft Vista and Win7?

  Hello

  I'm trying to figure out how what are my options for running my VB6 applications that use the API C of NOR-DAQmx with Vista or Win7.

  I have certain applications that we have maintained in VB6 (with Measurement Studio 6).  I programmed the software for traditional OR-DAQ hardware originally.  I suppose that I used for about 10 years or more.  About 2 years ago or if we needed to use our software with hardware recent DaqMX I've been able to use the API C OR-DAQmx for Visual Basic 6.0.  My application really support two hardware platforms simultaneously.  The person responsible for the project wanted to have 1 single application managed the two platforms (daqmx and inheritance).  So far, it's all great.

  If anyone knows what are my options if I want to use Windows Vista or Windows 7.  We are currently running this app on Windows XP.  I'm ready to upgrade my software if necessary although I have to spend to VB.net and Measurement Studio 7.1 (I currently have).  But if we were to happen tomorrow is there any compatilibility. I read that the traditional / legacy NOR-DAQ is not supported in Vista (Win7).  I googled and found there was a beta version which seemed to weakly in support of the legacy but did not support USB devices which is what I have (6020e (inheritance), SCXI (daqmx), 6259 (daqmx).)  I've heard that Windows 7 will have a virtualization system for XP applications that do not work natively under Win7, but for some reason, I doubt that the drivers and hardware will be run this way.

  Also, should there be differences between Vista and 7? I'm an XP user and computers I support many XP so I really have no experience with Vista.  I plan to install the Windows 7 RC to try some of this stuff.

  Thank you, David

  Use of our released traditional DAQ drivers is not supported on Vista systems, even running in virtual Windows XP mode. The driver works at a lower level which can emulate a virtual mode.

  However, we have a public beta version for a traditional DAQ driver that works for Vista. You can read about this version beta here

  -Abram

• Range of the signal DAQmx outdated?

  It could be me not quite understand the works of ADC express signal range.

  I use a chassis SCXI-1001, SCXI-1600 USB DAQ and a table of 1520 SCXI and 1314 for measures of constraints.  Within daqmx I have my range néc - 500 to 3500 uStrain with an excitement of the factor of 10V and pledge of 2.2.  After a recent test, I measured more than 4000 uStrain.  Real or not (we think maybe it's a sign of bad) I feel like the ADC must be on track to 3500.  What I'm missing here?  If the range does not reflect the real max and min then what it means.

  The range you define just tells DAQmx range values to cover.  With your configuration, you might be able to read much read more than 4000 depending on the configuration.  The given info, I just couldn't understand that the device is set on currently, but I'm sure you could dig a little in the specifications with your configuration to find out what Beach is using the card in your computer.

  If you feel that the material can act weird, there's a great KB help with measures of constraint in case of problems with your specific hardware.

  How can I solve the inaccurate measurements with the SCXI-1314?

  http://digital.NI.com/public.nsf/allkb/625E1FE5C6DD2A0C862579600073009E

  -Bear

• Problems VeriStand 2011 RT and SCXI-1540

  Good afternoon

  As in the topic, we have problems with our card module SCXI-1540 that we use to acquire a mixed selection of RVDT and resolvers.

  Specifically, we have our facility on Veristand 2011 on a target of RT who has a device custom control map SCXI chassis PXI-1050 and the NI PXI-6221 card, everything is fine but every now and then the map 1540 suddenly start showing a rolling measure of angle for resolution programs.

  By checking with an oscilloscope, resolvers entries are good, but we notice that when the event occurs, the excitement somehow pass set 5 kHz to 10 kHz and even by the cancellation of the deployment and redeploy the project and verify that the property node DAQmx channel used to set the frequency of excitation is the correct setting of 5 kHz and does not return an error There is no way to get the channel back to 5 kHz, and it remains stuck at 10 kHz. The only way to be able to control the frequency of excitation again is through a power cycle of the RT/chassis.

  We checked also by adding debug code in the custom feature event is the channel of sin or cos channel starts showing a rolling measure voltage so our measure of angle begins to roll too.

  So far, this behaviour seems to have manifested only with programs of resolution that we mainly tested those and synchronize us excitement between a sin / cos pair.

  Please notify

  I just noticed that I never gave a solution for this.

  The problem was current flyback to another causing system glitches of EMI on the lines of resolvers somehow mess with map of 1540, which essentially stopped decoding of the resoulvers of entry correctly, I added a Reset custom device close the file and that fixed the not being able to get out of the excitement of 10 Khz on the redeployment. However the final fix was adding flyback diodes to the tokill power system high seeds. So beware of your configuration as module SCXI-1540 cards seems to be sensitive to such events.

• Frequency measurement of analog input using DAQmx C APIs on SMU-6341 map

  Hello

  I use Linux DAQmx and attempt to measure the frequency of analog input using the map DAQ SMU-6341.

  There is an ANSI-C frequency measurement example:

  / usr/local/natinst/nidaqmx/examples/ansi_c/Analog_In/Measure_Frequency/Cont_Freq-Int_Clk-SCXI1126

  However, the call to DAQmxCreateAIFreqVoltageChan results in the following error:

  DAQmx error: selected physical channel 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.
  Property: DAQmx_AI_MeasType
  Required value: DAQmx_Val_Freq_Voltage
  Possible values: DAQmx_Val_Current, DAQmx_Val_Resistance, DAQmx_Val_Strain_Gage, DAQmx_Val_Temp_BuiltInSensor, DAQmx_Val_Temp_RTD, DAQmx_Val_Temp_Thrmstr, DAQmx_Val_Temp_TC, DAQmx_Val_Voltage, DAQmx_Val_Voltage_CustomWithExcitation

  Task name: _unnamedTask<0>

  State code:-200431

  DAQmx does support the function of the frequency on the map 6341, or should we use examples of voltage and calculate the frequency manually?

  Frequency of HAVE it is a type of channel that has been supported only on the SCXI module name of the example.

  You will need to use a voltage input channel and calculate the frequency manually for your device.

• SCXI-1102/SCXI-1303 undetected in SCXI-1000 chassis

  I use an installer with the SCXI-1303 module in an SCXI-1102 module in a chassis SCXI-1000 measures voltage and thermocouple.

  Until recently, everything worked well. but now it seems that I am unable to communicate with the interface. I've tried two different computers and hardware is not detected in MAX. The power light and fan on the SCXI-1000 chassis light again, it just seems to be no acknowledgement of the connection to the computer.

  A few more specific error codes:

  * When I double-click on the DAQ Assistant, in the block diagram window and click on 'Test' one of my entries, I received the following error message:
  "88705 error: the specified device is not present or is not active in the system."

  * I also got the error code "error-89130: not available in NOR-DAQmx device" in Control Panel test DAQ Assistant

  * During the closure of the DAQ Assistant test Panel, I see the error "error-89130: device not available for routing.

  * To the MAX, if I try to 'test' the chassis or the module, I've seen errors either saying that the device is not detected, or that the device must be reset or is being restored, or the traditional DAQ drivers must be reset (I tried the reset suggestions without result)

  At this point, I wonder if the Commission or the cable is pulled. Unfortunately, I don't have an other 68-pin cables to test at the moment.

  Thanks in advance...

  Thanks guys, I was able to solve the problem. To all those who might find this,

  * I noticed in the Windows Device Manager that two PCI devices have been listed as being not installed correctly.

  * After trying to update the drivers, I couldn't start the computer; got BSOD after the BIOS loading.

  * Some research led me to go out two PCI cards that I was not using, and I moved also to reinstall my data acquisition on an another slot card to force material.

  * Starts up, load drivers automatically and I'm gone.

  Doesn't explain not why it did not work in the other computer, but in the words of Spinal Tap, the authorities have said it was better left unresolved at this point.

• Parameters of Configuration of No (gain) of SCXI-1313 able and Automation Explorer

  Hello

  QUESTION:

  Help, please.  What should I do for my system to be able to define the 1125/1313 to re-read a +/-50v range?

  DETAILS OF THE PROBLEM:

  I have a SCXI-1125 module with a 1313 mitigation module which is be digitized by a PXI-6251.

  I create my daqmx inside my program tasks.  I want to put the max/min range for signals entering the 1125/1313 to +/-50v.  However, I get an error of daqmx saying that the mini/maxi is limited to +/-10v.

  Furthermore, I see no to the MAX so that the attenutaion of the 1313 or the gain of the 1125.  MAX actually displays a message saying that there isn't any configuration required for the 1313.

  Installation program:

  LabVIEW 8.6

  MAX 4.6.2f1

  DAQmx 9.0.2

  Windows 7 Pro - 32-bit

  Best regards

  Chris

  Dear Chris,

  You may find it useful to review the following Knowledge Base so that you can find more information on what I will explain:

  http://digital.NI.com/public.nsf/allkb/B138E2AA836B5354862570380073EA60?OpenDocument

  The SCXI-1313 is an attenuator module which serves to reduce your levels of input voltage so that they are in the range of input for your DAQ card voltage. When you use DAQmx in LabVIEW, you don't need to worry about setting the +/-50v rank because it will be scaling automatically. Simply choose any given voltage range is valid for your specific DAQ card (+/-10 v) in this case.

  It is for this reason that when you go to MAX to try to configure the attenuation, you get a message telling you that you need not do this from the descaling is done automatically.

• SCXI 1180 not detected and not ListBox!

  Hello

  I have a SCXI1001 chassis, with gauges bridge modules, modules thermocouple conditioner, lvdt modules and modules input voltage. I used it for a long time, but in fact, updated never need to use the raw tension module input (1180 and accessory).

  Today is the day that I need to acquire temperature and voltage, but... I can't configure the scxi chassis!

  Voltage input module is in slot 4, and when automatic detection detects not. But also, if I try to put it manually, i.e. open the list box and select it. It will not appear in the drop-down list.

  How to configure the 1180 module?

  Thank you in advance.

  Hi user,.

  Like her, he said in the document referenced by Ajmal, '[...] For unused connections you access via the SCXI-1180 module, you can reference them exactly as if they were the usual channels of data acquisition. "Therefore, you should check your stitching of data acquisition card in order to verify what pins are related to the physical channel you use.

  You can verify that you are the pinout by clicking Start > programs > National Instruments > NI DAQ > NI DAQmx help and then navigate using NOR-DAQmx Device terminals > DAQ hardware.

  I hope this helps!

• How to measure the frequency of NOR-DAQmx RPM tasks

  Hello

  I'm trying to measure the frequency using the NI DAQmx task and then convert it to a RPM if possible.

  I have the following material available to me.

  I have a block SCXI-1327 terminal, as well as a 6289 PXI multifunction data acquisition Module SCXI 1126.

  I wired in a mag ai7 sensor on my 1126 and then of the passage of an object metal I get a range of 6-8, so I am able to read the mag sensor.

  What I'm trying to do is somehow convert this analog measurement a RPM using the NI DAQmx task only.

  Any help would be appreciated.

  Hi, smooth,

  Yes, you would select linear, then put in the result of this calculation of the slope.

  The Manual recommends a minimum frequency of at least 15 Hz for setting low range. This card is not really designed to measure the frequency for a single pulse over a long period of time.

  The number of LAPS down (assuming one pulse per turn) that we recommend that you measure with the 1126 is so 900 RPM. If you need measure low revs, and you cannot increase the number of impulses per turn, you could consider either read the signal as an analog waveform, or if it's a digital pulse, using a counter to basic task. In this way, you can use any method you want to handle the situation where there is only a single pulse in a long time.