Can labview digital waveform editor provide tri state option

hi
Could anybody who have used labview digital waveform editor
would let me know whether, the package supports the
tri state opertaion also.
rags

Currently the LabVIEW Digital Waveform Editor does not provide tri state functionality.
Minh Tran
Applications Engineer
National Instruments

Similar Messages

Digital waveform editor can not open hws file generated by niHWS store waveform

Hi,
I am using a simple VI to store the U32 array to a hws file in LabVIEW, however, the file generated can not be opened by Digital Waveform Editor. The VI used to be working well before I upgrade LabVIEW from V7 to V7.1.
Meanwhile I also found out that the hws file generated by DWE can not be read out by niHWS. retrieve waveform.vi if the number of channels is not 32.
I would be grateful if any one can give me some help. Please find the VIs and hws files as attached.
The software I am using is
Digital Waveform Editor 1.0
LabVIEW 7.1
Best Regards, YJ2003
Attachments:
question Get ArrayU32 from HWS Data.vi ‏108 KB

Dear Brian,
Thanks for your quick response.
I tried again but still failed to open the hws file with my DWE V1.0. Since the version is the only difference between our software, I suspect the problem is caused by my DWE of old version.
Would you please help me to check if the new attached questionretrievepattern.hws file can be opened by the HWS.VI? (Please change the extention from txt to hws as I can not attach file with hws format in this forum)This file is generated by DWE1.0 and contain only 16 channels. It can not be opened by the niHWS retrieve waveform.vi in my computer with erroe code "-21558", but if I added another 16 channels signals with DWE, the data can be read out properly.
If we can confirm the problem is caused by DWE1.0, would you please also let me know how to upgrade my DWE? Thanks.
Best Regards, YJ2003
Attachments:
questionretrievepattern.txt ‏35 KB

Can digital waveform editor be launched from labview8.6

Hi,
Have anyone tried launching digital waveform editor from labview8.6? if so please let me know.Is there any connectivity VI that can be used for waveform editor.
Thanks,
Nandhini

Nandhini,
You have two different options for interacting between the Digital Waveform Editor and your hardware. You can either use the play button directly from the Digital Waveform Editor to launch Signal Express with a HSDIO Express Step configured to generate the waveform you are creating in the DWE, or you can edit and save a waveform to disk, and then configure a LabVIEW program to generate that saved waveform. It sounds like the second method is what you are looking for. Save the waveform you are editing in the DWE to disk at a specific location, then configure your LabVIEW VIs to generate the waveform, and use either the HWS read VIs, or you can use the write waveform VIs of the HSDIO and specify the location of the HWS file.
Brian Coalson
Software Engineer
National Instruments

Digital waveform editor

If I use the Digital Waveform Editor to create a clock, can this clock signal be used as a my clock source? An example I am trying to reference for creation of my own VI is the Dynamic Generation and Acquisition - Demo.vi found in the Example Finder in LabVIEW 2012. In it the On Board Clock is used for both Generation and Acquisition. I would like to use a clock that I have already created in my waveform file because I know my other signal is working with it and the device under test when doing a signal generation and acquisition using a scope. Any advice on how to do this (if possible) would be appreciated.

tcarrico,
In terms of using the waveform file that you created directly as your clock source, this is not possible. However, if you wanted to output this waveform using a function generator and then use that signal as an external sample clock for your Digitizer, this would be more likely to work. Is this more along the lines of what you were thinking?
Robert B
Applications Engineer
National Instruments

Digital waveform editor somewhere bundled in full, proffesional or suite?

Hi,
I recently discovered the digital waveform editor which seems quite usable for a project I'm working on. I downloaded the demo version, but I cannot save the files (it's a demo right). My question is whether this product is available in one of the bundles. At the university we do have access to allmost every LabVIEW product but I cannot seem to find this one. And before I go installing all DVD's I can find, perhaps there someone who knows whether and where I could find it.
Thanks in advance,
Mark

Hi Mark,
See here for another DWE.
- Partha
LabVIEW - Wires that catch bugs!

Digital waveform editorで作成した波形をPXIe-6536で出力

Digital waveform editorで作成した波形をPXIe-6536で出力したいのですが、どのようにすればよいでしょうか．
対応が正しいかわかりませんが、現状では以下のようなアプローチをとっております．
①Digital waveform editorで波形を作成
.hws形式のファイルとして出力して、
「NI-HWS Express(load)」に読み込み
デジタル波形グラフVIで出力を確認しました．
②PXIe-6536用にDAQアシスタントを作成
PXIe-6536でのデジタル出力
DAQアシスタント作成時画面でテスト波形の出力
NI CB-2162上で波形が出力されていることを確認
DAQアシスタント作成完了
というところまでを行いましたが、いくつか気になる点があります．
DAQアシスタント単体で実行すると、エラーが出る
「エラーコード-200077がDAQmx Write (Digital 1D Wfm NChan NSamp).vi:3で発生
Measurements: 要求された値は、このプロパティでサポートされている値ではありません。
プロパティ: Output.BufSize
要求された値: 0
最小値: 2
最大値: 4294967295」
DAQアシスタントとHWS読み込み用VIの接続を添付ファイルのようにForループ内に入れなければ接続できない
以後、サンプルレートの設定などを行うにはどのようにすればよいか．
といった状況です．
当方、Labviewに関しては全くの初心者であるため、上記のような方法が適切であるかわかりません．
至らない点も多いかとは思いますが、お気づきの点がございましたらご意見いただけますようお願いいたします．
Attachments:
sample.jpg ‏654 KB

Try posting in english here
Translation
Digital waveform editor to create waveforms PXIe-6536 I want to output, what do I like?
I do not know the correct response is, at present we take the following approach.
① Digital waveform editor creates a waveform
   1.. Hws as the output file format
   2. "NI-HWS Express (load)" read
   3. VI confirmed the digital waveform graph output.
② PXIe-6536 for creating DAQ Assistant
   1. PXIe-6536 digital output in
   2. DAQ output waveform creation screen test assistant
   3. NI CB-2162 has been confirmed that the output waveform on
   4. DAQ Assistant SUCCESS
Is conducted to the point where there are some drawbacks, however.
    * DAQ Assistant, you run alone, I get an error
"-200,077 Error code is DAQmx Write (Digital 1D Wfm NChan NSamp). Vi: 3 occurred in
Measurements: Requested value is a value that is not supported at this property.
Property: Output.BufSize
Requested value: 0
Minimum: 2
Maximum: 4294967295 "
    HWS * DAQ Assistant VI to read the attached file for the connection can not connect For the loop to be taken into
    * Thereafter, the sample rate settings do and what do I like?
Such situation.
Us, Labview for complete beginners because it is, I do not know how you like the above is correct.
And I think there are many points, but fall short, you can ask that solved until you have any opinion you have any

Digital waveform editor & fichiers.hws

Bonjour,
J'utilise une carte PXI 6542 pour envoyer diverses sequences numériques à un système électronique, j'utilise le Digital WaveForm Editor qui est plutot pratique pour faire des modifications ponctuelles (à la sourie) sur des signaux (par exemple modifier le debut ou la fin). Je peux egalement créer des signaux directement avec labview, si ceux-ci sont repetitifs et pas trop complexes.
L'ideale, est de pouvoir utiliser les deux manières de dessiner les signaux numeriques. Mais je n'arrive pas à enregistrer à partir de labview un fichie.hws qui aurait des noms (voir même des couleurs) paramétrables.
Ma question : Comment enregistrer un fichier.hws avec des noms de signaux que l'on retrouverai lorsqu'on ouvre ce fichier.hws avec le Digital Waveform Editor ???
Merci.

Bonjour,
Pardonnez mon français, je n'ont pas parlé français depuis le lycée. Afin d'écrire un dossier et faire apparaître les noms de signal dans le DWE, vous devrez éditer le dossier utilisant une bibliothèque HDF5. On est disponible ici:
http://digital.ni.com/public.nsf/allkb/CB8A7F8090900F6C86256CC700033816
Les noms de signaux viennent du "name" corde dans le dossier HDF5. Si vous n'êtes pas très familiarisé avec HDF5, alors il peut être très difficile d'appeler les signaux. Vous pouvez également consulter le poteau suivant de forum de discussion:
http://forums.ni.com/ni/board/message?board.id=170&requireLogin=False&thread.id=155446
Brian Coalson
Software Engineer
National Instruments

Digital waveform editor sample size limit?

Hi,
Can anybody please tell me the sample size limit of the Digital Waveform Editor? Thanks!
Jing

Hello,
1) You can actually acquire as many points as you want. You may be worried about the throughput of all this data from the DAQ board into computer memory, but I don't think this will be much of a concern for your application. You're limited only by how much memory your computer has. Mainly, you should be concerned about what you are doing with all those samples after they are acquired. Are you just using them once then throwing them away? (Such as the "Cont Acq&Graph Voltage-Int Clk.vi" shipping example.) Or are you streaming them to disk? If you just keep them all in computer memory, then there would be some maximum number of samples you could hold but that number would be system dependant and you'd just have to experiment to find that number.
2
) That's a great idea to take those voltage signals and make them digital inputs. This way you'll also free up some more bandwidth giving you the option to increase the sample rate on your other channels. However, you won't be able to include any DIO channels in the same task with your other analog channels. You need to create a separate task for these digital input channels. Lines 0,1,2, and 4 will be reserved for communication with your SCXI chassis by the way. You also won't be able to do any buffered sampling like you can with the analog channels. The DIO for the PCI-6024E is only immediate and software-timed. (You must poll the status of the line with a software loop.)
Let me know if you have any other questions.
Russell
Applications Engineer
National Instruments
http://www.ni.com/support

Digital waveform frequency measurment

Hi,
i have Motor driver can give me the speed as feedback "digital waveform"
the frequency is proporational with the speed
i have Cdaq 9188
also i have ni9401
1. at which slot i have to connect the cmodule 9401 to be able to reach the counters ?
2. how i have to connect the speed feedback to module ?
3. can i have guide about this issue ?
thanks alot

Try posting in english here
Translation
Digital waveform editor to create waveforms PXIe-6536 I want to output, what do I like?
I do not know the correct response is, at present we take the following approach.
① Digital waveform editor creates a waveform
   1.. Hws as the output file format
   2. "NI-HWS Express (load)" read
   3. VI confirmed the digital waveform graph output.
② PXIe-6536 for creating DAQ Assistant
   1. PXIe-6536 digital output in
   2. DAQ output waveform creation screen test assistant
   3. NI CB-2162 has been confirmed that the output waveform on
   4. DAQ Assistant SUCCESS
Is conducted to the point where there are some drawbacks, however.
    * DAQ Assistant, you run alone, I get an error
"-200,077 Error code is DAQmx Write (Digital 1D Wfm NChan NSamp). Vi: 3 occurred in
Measurements: Requested value is a value that is not supported at this property.
Property: Output.BufSize
Requested value: 0
Minimum: 2
Maximum: 4294967295 "
    HWS * DAQ Assistant VI to read the attached file for the connection can not connect For the loop to be taken into
    * Thereafter, the sample rate settings do and what do I like?
Such situation.
Us, Labview for complete beginners because it is, I do not know how you like the above is correct.
And I think there are many points, but fall short, you can ask that solved until you have any opinion you have any

I am using systec usbmodule1 to send and receive CAN messages , is any one have tried this in labview?, if yes can you send me the code thanks

i am using systec usbmodule1 to send and receive CAN messages , is any one have tried this in labview?, if yes can you send me the code
thanks
Solved!
Go to Solution.

Hey,
All of our CAN drivers have been written for National Instruments' CAN hardware (referenced here : http://digital.ni.com/public.nsf/allkb/E2C6ED025C798C5586256F4E00520448 ). Thus, you will have to code all your communication manually, unless Systec provides a LabVIEW driver. There might be various dll files that Systec provides for communication, which you will be able to access through LabVIEW. Take a look at the Call Library Function Node, which can be found from the Functions Palette under Connectivity -> Libraries & Executables. Here you can call a dll file, and also the individual functions within that dll.
I would suggest posting your question either to the LabVIEW forum, as previously mentioned, or to the CAN forum found here : http://forums.ni.com/ni/board?board.id=30
Justin E
National Instruments R&D

Export digital waveform+labview

Hi to everyone...I'm a newbie with labview, and I want some help for the beggining...Well I'm working on a project and for start I must use an arbitrary signal and an oscilloscope so as I can see the the graph of it(for simplicity I used a sinus in the beggining...)and then I must use an A/D converter and the digitalized output must be saved in a .txt file so that I can read it...So I wired the sinus with the A/D converter but then I cannot make the output of it compatible so that I can save it...I used the component "export waveforms to spreadsheet file.vi" but it says error diffent type of data you cannot wire a "Digital waveform" with the input of the file "1-D array of waveform(DBL)"????I used and some other components for saving in a file but it didn't go better...What did I do wrong???Please if anyone can help me...I would appreciated!!!
Solved!
Go to Solution.

Hi again...I want some help...Last time I sent you "my_main.vi" file and told you that had a problem about making time to be correct in the .txt file...I haven't solved it yet, although I tried a lot to find how I can change this the txt. Anyway for now what concerns me most is that although the gragh(with the formula i use) i see in the front panel is correct when i take the data from the .txt file and paste it to a .xls file and making a graph it seems that there are pulses of the same amplitude before the visible signal i see in my front panel...I couldn't understand why this was happening but after a while i put the same formula in a grahp calculator that i have and saw that the previous pulses are not of the same amplitude, they just appear to be so because the amplitude that is set to the component isn't enough to show their whole amplitude...so they are been cut off and seem to be the same...So i tried to change the values at the x-axis but I didn't make it.The program holds some certain range(0-4) that I had initially set to it...At the bottom line I'm facing a problem to appear the rest of the graph in the component's output, and also to fix the phenomenically wrong pulses to my .txt file...Please I would appreciated if anyone can help me...Im sending you all files to have a picture of wht's going on...
Thank you for your time...
Michalis V.
Postgraduate Student
Department of Informatics and Telecommunications
National & Kapodistrian University of Athens
Attachments:
my_main.vi ‏20 KB
results.txt ‏154 KB
samples.xls ‏428 KB

How can I programmatically detect transition times in a digital waveform

Hi, I have a digital waveform and at certain times I have transistions and glinches , how can I programmatically detect and record the time stamps of the transitions
Thanks

Let me see if I understand you. You are reading 14 bits in parallel and you want to know how long between transitions of just one of those bits - say bit 11. Is this bit number constant or can the number of the bit in which you are interested change?
Well, you could XOR the value from each read of the digital bits with the 14 bits you got from the previous read. If the resulting value of bit 11 is true, the state of bit 11 has changed. Use that flag to read/restart an interval timer. Of course the resolution of your measurement will be dependent upon the rate at which you are reading the 14 bit input. If you are only sampling the 14 bits every 500 msec, you obviously won't be able to measure intervals of less than 1/2 sec.
Mike...
Certified Professional Instructor
Certified LabVIEW Architect
LabVIEW Champion
"... after all, He's not a tame lion..."
Be thinking ahead and mark your dance card for NI Week 2015 now: TS 6139 - Object Oriented First Steps

Reading Waveform (.hws) files from Analog Waveform Editor into LabVIEW causes read errors

Hi Gang,
In my application, I want to create files Using the Analog Waveform Editor and then, through LavVIEW, play them out through an D/A.
I've not been able to read the .hws file into LV. I've tried two methods:
Using the Read Waveform VI in the Waveform palette, yields Error -1821.
I looked in the knowledgebase and found the article "Using the Analog Waveform Editor and HWS Files with Multifunction DAQ Devices" That recommended using the HWS VIs that are a part of the FGEN driver. I tried that and get an Error -21515.
The file I want to read is quite small, only 20 samples. Is there some limitation on .hws files or the Waveform Editor I'm not aware of?
I've attached the file if anyone is willing to experiment. I had to change the extension from .hws to .txt to be able to attach it.
All responses will be appreciated.
Thanks,
Roger
Solved!
Go to Solution.
Attachments:
Havesine.TXT ‏108 KB

Interesting. I tried to look at your file with the low level read .hws file vi's and I too got error -21515. So I tried the NI-HWS express load.vi and it looks like it worked. I'm not familiar with the analog waveform editor...does it store using the dynamic data type? Oh I converted the dynamic data to 1d array of waveforms using the convert from dynamic data.vi.
Using LabVIEW 2010SP1 and TestStand 4.5

How can you add comments to a text file while using a Digital Waveform vi?

Hi. I'm very new to Labview. I have a txt file of 1's and 0's wired to a "read from text file" which is then wired to a "spreadsheet string to digital.vi" ("digital waveform") and lastly to a graph. I want to add notes to the txt file that will not be read in the digital waveform. i.e. Like how you use // or /* in a C++ program to show that you are writing a comment and not code.
Labview version: 8.5
Thank you

You will just need in your text file a line at a time. Search the string for the characters // or /*. If it finds them, then loop back and read another line. If it doesn't find them, you must have a good line of data and you can pass on to the next part of your cod.

Is PROVIDE-ENDPROVIDE statement obsolete ? Can I use it from now onwards?

Hello Techies..
I am working on HR ABAP, I have used PNP LDB extensively.
I came to know from SAP help that Provide-Endprovide statement has been obsolete in newer version of
SAP. I am aware that it is obsolete in ABAP OO context. But does that mean - we should not use provide - endprovide in our report(type 1 program).
I would be glad if you can focus some light on this point.
My second doubt:
I am using PNP LDB, can I replace PNP by PNPCE (since PNP is replaced by PNPCE in newer version).
If I do so my existing functionality will be affected.
Can you give me a brief of added features of PNPCE?
Points will be rewarded to satisfying answer !!
Regards,
Mihir.

>
Mihir Nagar wrote:
> I came to know from SAP help that Provide-Endprovide statement has been obsolete in newer version of SAP. I am aware that it is obsolete in ABAP OO context.
> Mihir.
Hello Mihir,
That is not correct. The syntax for PROVIDE statement has changed in the newer version as a result the old syntax has been declared obsolete by SAP but that is not to say that the PROVIDE statement itself has become obsolete, if I understand you correctly.
Here's the (old) syntax which has become obsolete:
PROVIDE {*|{comp1 comp2 ...}} FROM itab1
        {*|{comp1 comp2 ...}} FROM itab2
        BETWEEN extliml AND extlimu.
And here's the (new) syntax for the same PROVIDE statement which you should use in the newer SAP releases:
PROVIDE FIELDS {*|{comp1 comp2 ...}}
               FROM itab1 INTO wa1 VALID flag1
               BOUNDS intliml1 AND intlimu1
               [WHERE log_exp1]
        FIELDS {*|{comp1 comp2 ...}}
               FROM itab2 INTO wa2 VALID flag2
               BOUNDS intliml2 AND intlimu2
               [WHERE log_exp2]
        BETWEEN extliml AND extlimu
        [INCLUDING GAPS].
ENDPROVIDE.
Note the changes in the syntax. The new syntax can be used to evaluate and process records in an internal table the same way you used to with the old syntax depending on the options you are using from the new syntax. In summary, the new syntax is able to do exactly the same processing as the old but only difference in the new syntax is that the introduction of additional keywords like FIELDS, VALID and BOUNDS. You'll also notice that the new syntax requires a single workarea to read the record in the provide-endprovide loop unlike the old syntax where it did not require an explicit workarea.
>
Mihir Nagar wrote:
> My second doubt:
> I am using PNP LDB, can I replace PNP by PNPCE (since PNP is replaced by PNPCE in newer version). If I do so my
> existing functionality will be affected. Can you give me a brief
> of added features of PNPCE?
> Mihir.
It only makes sense to use PNPCE if your comany uses the SAP functionality of Concurrent Employment (CE) in HR - i.e. this feature is turned on (active) via the IMG. If CE is not active there's no problem continuing to use PNP as this is not declared obsolete or anything like that but SAP recommends that all new developments should use LDB PNPCE - I understand existing developements should be fine (as long they don't have to handle CE scenarios).
So let me know if CE is active and you need to replace all PNP reports with PNPCE and I'll be happy to send you an overview with code snippets etc.
Hope this helps and please don't forget to reward points.
Cheers,
Sougata.

Can labview digital waveform editor provide tri state option

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