Multi Numeric Limit Test define Array Size of Limits from LabView
Hello,
i have a new problem. I want to change the array size of numericarray and Step.Result.Measurement from LabView.
I want to do the same thing i can do when i use Edit Limits and press the button Add or Remove.
When i only give them a define array from Labview it doesn't work.
Thank you
best reguards
Dear Tumbler
I think the following thread should answer your question:
http://forums.ni.com/ni/board/message?board.id=330&message.id=2826&requireLogin=False.
Best regards
Philipp Roessler
Similar Messages
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Numeric Limit Test - Several arrays and 1 limit set per array
Hello !
I am quite new to Teststand and I get stuck with an issue of which the solution should not be that intricate ... (I think ...).
I would like to use a "Numeric Limit Test" vi (LabVIEW module). This vi returns 3 arrays and I would like to define 1 "min/max" set for each array.
i.e. :
ARRAY1 => each element compared to min1 & max1
ARRAY2 => each element compared to min2 & max2
ARRAY3 => each element compared to min3 & max3
For 1 array, I found this solution : I write Locals.ARRAY1[RunState.LoopIndex] in "DataSource" and all the elements of the array are compared to the limits I have chosen. Of course, when I add 2 arrays, the same limits are compared to those new arrays but I would like to allocate 1 limits set to 1 array.
Does anyone have an idea of an easy solution ?
My Teststand code and the little vi are here below if it might help.
Thank you in advance !
Solved!
Go to Solution.
Attachments:
Arrays_Generator.vi 11 KB
Sequence File 1.seq 7 KBConsider this example. The trick is Repeat One Measurement on the Data Source tab.
jigg
CTA, CLA
teststandhelp.com
~Will work for kudos and/or BBQ~
Attachments:
MultiARray.seq 7 KB
Output3Arrays.vi 10 KB -
Property Loader and Multiple Numeric Limit Test
Hi!
I'm trying to export the limits of all numeric limit tests im my sequence.
I've no idea what i'm doing wrong, but i fail with exporting the limits of the multiple numeric limit tests. There are only the limits of the "normal" numeric limit tests in my export.
Could someone please explain me how to export also the limits of the multiple numeric limit test?
(TS 2013)when defining what to export, it is usually easiest/cleanest if you can explicitly define all multiple numeric step measurements as explicit indixes? For example if your MNL step has 2 measurements defined, you'd want to export 4 additional matches...
Step.Result.Measurement[0].Limits.Low
Step.Result.Measurement[0].Limits.High
Step.Result.Measurement[1].Limits.Low
Step.Result.Measurement[1].Limits.High
...and so on for more indexes....
note how the pattern is different from the regular
Step.Limits.*
by default when you try to export using the '>' buttons for MNL steps, TestStand will usually try to help by generating an incomplete/invalid expression of:
Step.Result.Measurement[?].Limits
which it expects you as the user to fix before proceeding, however the '?' is often overlooked, because it's so small!
some people prefer to simply export the entire Step.Result.Measurement.* to the file because they'd prefer not to define array indexes, but this will log the explicit XML for the container values, which may not be as easy for end users to work with... your mileage may vary. Good luck!
-Elaine -
Dynamically configure multiple numeric limit test measurements
I seek to dynamically (programatically) configure a multiple numeric limit test such that I may set / increase / change the number of measurements in the step during execution. For example, I'd like to setup the step for 5 measurements:
M1, M2, M3, M4, M5 with limits 4<=x<=13.
I'll set the result data to {1,2,3,4,5}.
I can successfully set:
MyMultipleNumLimTestStep.ExpectedNumMeas = 5
MyMultipleNumLimTestStep.NumericArray (Number of elements to 5)
MyMultipleNumLimTestStep.DataSourceArray (Number of elements to 5)
MyMultipleNumLimTestStep.Result.Measurement (Numer of elements to 5)
Following that, I can access the individual measurement property objects (by offset) and set the Name, Limits.Low, Limits.High, etc...
During execution, I can view the step variables to see the values getting set correctly.
BUT, in the report, I only see measurement name, status and the measurement value. NOT the units, limits, comparison type.
Step
Status
Measurement
Units
Limits
Low Limit
High Limit
Comparison Type
AmpMatchTest
Failed
Measurement:
M1
Failed
1.000
M2
Failed
2.000
M3
Failed
3.000
M4
Passed
4.000
M5
Passed
5.000
Take note, prior to execution, I have no entries defined in the Limits tab of the step settings for this step. If I were to define, say, two steps and run again:
Step
Status
Measurement
Units
Limits
Low Limit
High Limit
Comparison Type
AmpMatchTest
Failed
Measurement:
M1
Failed
1.000
dB
4
13
GELE(>= <=)
M2
Failed
2.000
dB
4
13
GELE(>= <=)
M3
Failed
3.000
M4
Passed
4.000
M5
Passed
5.000
If I define >5 entries, my code will limit the result to 5. Any ideas?
Thanks,
DerekHi jigg.
I also need to configure a multiple numeric limit test programatically. Unfortunately your solution seems not to work (in Teststand 2013). Also with your code I get limits and comparsion entries in the report only for the first measurement. This is the one already existing in the step configuration.
Step
Status
Measurement
Units
Limits
Low Limit
High Limit
Comparison Type
Dynamic Call
Passed
Measurement:
AllParts
Passed
1
1 = Pass
1
EQ(==)
Another Part
Passed
1
Part 20
Passed
1
Part 2
Passed
1
Part 1
Passed
1
If I add a second measurement in the step, this one is shifted (like expected) and shows the limits and comparsion in the report.
Step
Status
Measurement
Units
Limits
Low Limit
High Limit
Comparison Type
Dynamic Call
Failed
Measurement:
AllParts
Passed
1
1 = Pass
1
EQ(==)
Another Part
Passed
1
Part 20
Passed
1
Part 2
Passed
1
Part 1
Passed
1
Measurement 1
Failed
0
1 = Pass
1
EQ(==)
What is special with the preconfigured measurements, compared to the programatically created test? Any help is very appreciated.
Thanks
--rainer -
Multiple Multiple Numeric Limit Test
Hello
I have a test that I have written (LabVIEW) that produces 2 arrays of numeric Values. 1 array of Gain data and 1 array of Noise data. I want to apply (different) limits to each array (Same limit for each element within array). How do I do this in TestStand. I have used the multiple numeric limit test for tests returning a single array of data but my test returns 2 arrays.
It would be really in-efficient to split the test up into 2 tests as both Noise and Gain data comes back from the instruments in one sweep.
Any clues ?
Regards
ChrisChris,
Since your code module returns two arrays and you do not want to call the module twice you could have the LabVIEW multiple numeric limit test step to validate one of the arrays and have a None multiple numeric limit step to validate the second array. You have to send one of the arrays to a local or global variable so you can access it from the None multiple numeric limit step.
You could even execute these steps in a separate sequence and call it using a Sequence Call step if you want to see all the process as a single step.
Another option would be to create your own multiple numeric limit step type in order to support two different arrays as the data source at the same time. This solution requires more work from you. You could take the existing multiple numeric limit step type code as a starting point.
You can fin the code under <TestStand>\Components\NI\StepTypes\CommonSubSteps.
If you plan on modifying the code it is better to make a copy under <TestStand>\Components\User\StepTypes and modify it there.
This will prevent future upgrades from overwriting your changes.
If you have any question let me know.
Hope it Helps.
Antonio Lie. -
NI_LimitMeasurement in multiple numeric limit test results ?
Hi,
I'm setting up a database where I will store my teststand results. I've seen that the default "multiple numeric limit test" stores as first result an entry with type_name = "Array of NI_Measurement[0..n]" (n being the number of values returned by this step).
What's the goal of storing this in the database ? Is it only used to know how many results have been returned by the step ?
Regards,
AlexDear SG3,
I've a written a simple TestStand sequence which executes a single "Multiple Numeric Limit Test" returning 2 random values :
The results are stored in my database using the default "MySQL Insert (NI)" schema. When I look for what has been written to the database, there are 2 steps results in the "STEP_RESULT" table. The first one is the MainSequence Callback. The second one is my "Multiple Numeric Limit Test" step.
If I then display the corresponding results of this step that are in the "PROP_RESULT" table, here is what I get :
There are 3 entries in this table. The first one is named "Measurement" from type "Array of NI_LimitMeasurement[0..1]". The two other entries are my generated random numbers.
What is the purpose of the first entry ?
Regards,
Alex -
Measurement for multiple numeric limit test
Hello,
I am developing a test software using LabWindows and TestStand. In my application, I have added a no: of multinumeric tests. In Operator Interface, I want to display each measurement in run time, instead of waiting for completion of all the measurements with Multiple numeric limit test. Is there any way to receive in TSOP each runtime measurent taken for multiple numeric limit test without waiting for multinumeric limit test over?
Thanks in advance......
Best Regards,
VijayHi Vijay,
Unfortunately, a Multiple Numeric Limit Test will not allow you to return each measurement inside the step as it executes. If you need this to occur, there are other methods that you could take. You could create a custom step type or use many Numeric Limit Test steps and pass them the indexes in your array.
Another method you might use would be to use an Action step and save the array locally. Then, you could use Statement steps to evaluate each item in the array.
Jessica
National Instruments
Product Support Engineer -
Multiple Numeric Limit Test - Accessing only the failed tests
I would to access only the failed tests in a multiple numeric limit test. The specific information I want to access is the measurement value, low limit, high limit, and comparator type. I need to access these pieces of information during runtime from a Message Popup, therefore i have to use the Message Expression field in the "Text and Buttons" tab of the Message Popup step to access this information.
[DL]Hi,
PostStepFailureCallback is the one you want to start with. The only difference is where you get the data from the Step.Results.
For the Limits etc you will need to look in the Measurement property. Also, beware that you are dealing with an array of data.
Regards
Ray Farmer -
I need to know the differnece between the Numeric Limit Test between the TestStand version 3.0 to 3.1. If there is any differnec in the source code how to find it out? If somebody has the code can you share it?
Thanks,
JeyanHi,
I don't believe there are any differences between the two versions. But you can check the source code for the Numeric Limit Test in TestStand\Components\NI\StepTypes\CommonSubsteps. But the main part of the step is the Code Module and this bit the users supplies this.
What has prompted this question?
Regards
Ray Farmer
Regards
Ray Farmer -
The "Edit Numeric Limit Test" help page is wrong
The last four limit types incorrectly say "and" where they should say "or" in the limit comparison. The software gives the correct information in the status line just below the limit type editing screen, only the help file is incorrect.
David@Work -
Thanks a ton for reporting this! I went ahead and documented this for fix in a future version of the software, and I also documented that the Multiple Numeric Limit Test documentation is incorrect, as well.
For your reference, this was reported to R&D #118475 for further investigation and fixing.
Thanks again for your feedback!
Derrick S.
Product Manager
NI DIAdem
National Instruments -
Multiple Numeric Limit Test - Evaluate Post and Status Expression
We have a Multiple Numeric Limit Test where the limits for one of the measurements is a function of one of the other measurements.
In the Post-Expression there are two expressions that set the low and high limit based on one of the readings.
But the comparison does not seem to be using the calculated limits.
The report file shows the correct calculated Low and High Limits, and shows the measured reading as being in between the Low and High limit, but fails that measurement. I feel the Status Expression is using the default limits that are out of range.
The post expression looks like this
Step.Result.Measurement[2].Limits.Low=Step.NumericArray[1]*1.9,
Step.Result.Measurement[2].Limits.High=Step.NumericArray[1]*2.1
In Table 3-4 "Order of Action that a Step Performs", Evaluate Post-Expression (Action #15) is before Evaluate Status Expression (Action #16), but it seems that is not the case.
Or am I changing the wrong Low and High Limits. Am I just changing the Limits used in the report file and not the limits used for comparison?
Again the correct low and high limits are in the report but not used for comparison.
ThanksDigging into the NI step type for Multiple Numeric Limit Test, I find that the comparison is done at Post-Step substep which is before my Post Expression is evaluated to set the correct limits.
So I have added code to my VI module to set the limits after taking the measurements but before returning to TestStand. -
Custom Looping Multiple Numeric Limit Test SequenceFilePostStepFailure
Hi
I am using a custom loop on Multiple Numeric Limit Test. The SequenceFilePostStepFailure callback is called each time the loop fails and called again when the step fails.
I want to do something (not relevant for this question) when it is looping and something else when the step fails. How do I know the difference? Is there any flag to look for?
I have tried looking at several variables under RunState but haven’t found the right one. Is there one?
Thanks in Advance
KimKim,
Try Runstate.Caller.Step.Looptype you can compare this to NoLooping. If NoLooping then the step doesn't loop. You can also use Runstate.Caller.Step to get a Step object and then just use the API calls to manipulate it. You can read about it in the TS help. To get the loopindex try: Runstate.Caller.Loopindex.
Both should be ran in the SequenceFilePostStepFailure Callback.
jigg
CTA, CLA
teststandhelp.com
~Will work for kudos and/or BBQ~ -
Execution order of Multiple Numeric Limit Test?
What is the execution order of "Multiple Numeric Limit Test" in TestStand 2010?
I am using a custom steptype of Multiple Numeric Limit Test. I want to manipulate the input parameter. How can I do that. I am not interested in making a new steptype. I am writing in Post-Expressions and the data is manipulated as they should but it is not evaluated. I is evaluated before the Post-Expressions executes.
For example I am writing: Step.NumericArray[0]= Step.NumericArray[0]*1000/(2.5-Step.NumericArray[0])
The execution order when looking at the TS manual at page 3-13 is Evaluate Post-Expression before Evaluate Status expression. But it is not what I see. I have also tryed using the more simple Numeric Limit Test and it works as I expect it to according the manual.
Anyone knows about any workaround for that?Hi Ray
Thanks for your reply
I have tried writing what you are suggesting: Step.Result.Measurement[0].Data= Step.Result.Measurement[0].Data*1000/(2.5-Step.Result.Measurement[0].Data)
Still it evaluates the step before the post-Expression. When I am looking at the variables at runtime the Step.Result.Measurement[0].Data is having the correct value but it seems to evaluate the step before the Post-Expressions.
Any other suggestions? -
Overriding Result Status of a (Multiple) Numeric Limit Test
I want to be able to change the pass/fail status of a numeric limit test from a CVI DLL, whilst still displaying the numeric results in the report. I have tried ResultStatus, StatusExpression and many others but they all seem to do nothing or get replaced by the result of the numeric limit evaluation. Is there a method of supressing the numeric limit evaluation or prefferably performing the individual comparisons but overriding the overall result.
TIA,
DaveYou would have to do the overriding in TestStand. On your Test Step, open the Properties page and go to the Expressions tab. At the bottom you will see the Status Expression box. This is where the limits are compared to the measured value to determine pass/fail. You could modify the code here to have Step.Result.Status be either "passed" or "failed". The actual numeric value measured would not be changed.
- tbob
Inventor of the WORM Global -
Hi all,
I have a problem with decimal point character and database logging.
I've deselected "Use Localized Decimal Point" in Station Options->Localization. Teststand should now use "." as decimal point character (ignore the "'s).
When logging to database this is only true for Multiple numeric limit test results, not for Numeric limit test results.
Numeric limit test results use "," as decimal point character where it should be "."
I can't trust the localization settings on the PC as different endusers might have different settings.
Example:
(STEP_NAME and PROP_RESULT.DATA)
Numeric limit test 1,50127667932332
Multiple numeric limit test result_1 1
Multiple numeric limit test result_2 1
Multiple numeric limit test result_3 10.0304317
I've changed the Limits->Numeric format for each test but this change is only applied to the report, not the database result.
Read the manuals but didn't find anything...
Have I missed something obvious, or is this some kind of bug?
Teststand version is 2010.
Windows versions are XP SP3 and Win7. Same behavior on both OS.When something is logged to the database as a number, the database is probably storing it in a way that is independent of any sort of decimal point localization. When you view the items in the database however it is probably going to show you the number based on the current locale settings. This is likely purely cosmetic, for display purposes.
-Doug
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