Exit a loop when the condition in if succeed

Hello everbody:
LOOP ....
IF ...
"If the sentence here succeed I want to exit of the loop.
ENDIF.
ENDLOOP.
Some ideas please

Hi
Try this
Loop ....
if 1=1
begin
goto ExitLoop
end
ExitLoop:
Regards

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Thanks so much guys. am now starting to pick some ideas. i have attached the Vis as requested for best identification of the help.
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first Vi.vi ‏132 KB
second vi.vi ‏149 KB

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Hi,
I need some help on the following code. I know how to use CONTINUE or EXIT in loop but the problem is inside the loop i am using subroutine in which i am using if conditions. if one of those if conditions are not satified then it has to come out of the subroutine without executing remaing statements.
sample code is as follows:
loop at itab into wa_tab.
perform check. using wa_tab changing it_tab.
endloop.
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Hi,
loop at itab into wa_tab.
perform check. using wa_tab changing it_tab.
endloop.
form check using ix_tab type itab
. changing ir_tab type it_tab.
if x is not INITIAL.
else if y is not INITIAL.
else.
"COME OUT OF THE ROUTINE"
endif.
endform.
or
loop at itab into wa_tab.
perform check. using wa_tab changing it_tab changing lv_errflg.
IF LV_FLAG EQ 'X'.
EXIT.
ENDIF.
endloop.
form check using ix_tab type itab
. changing ir_tab type it_tab.
if x is not INITIAL.
else if y is not INITIAL.
else.
"COME OUT OF THE ROUTINE"
lv_flag = 'X'.
endif.
endform.
Thanks,
Mahesh

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Hi,
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Regards,
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Hello,
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If you are satisfied with the answer, please give Reward Points.

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Please remember to mark the replies as answers if they help and unmark them if they provide no help

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Hi, I have a question follow up on this.
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How to make wave graph restart when the condition of case structure is changed?

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Message Edité par chilly charly le 11-08-2007 01:57 PM
Chilly Charly (aka CC)
E-List Master - Kudos glutton - Press the yellow button on the left...
Attachments:
Example_BD.png ‏1 KB

User exit / BADI to add the condition type in PO

Hi Friends,
The scenario is like user will be creating the Sales order & after that user will create the PR & immidiately after that PO will be created from PR no.
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Full points will be awarded for the correct answer!!
Best Regards,
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Edited by: aditya aghor on May 26, 2008 8:59 AM
Edited by: aditya aghor on May 26, 2008 10:33 AM

Transaction Code - MIRO                     Enter Invoice
Exit Name           Description
LMR1M001            User exits in Logistics Invoice Verification
LMR1M002            Account grouping for GR/IR account maintenance
LMR1M003            Number assignment in Logistics Invoice Verification
LMR1M004            Logistics Invoice Verification: item text for follow-on docs
LMR1M005            Logistics Inv. Verification: Release Parked Doc. for Posting
LMR1M006            Logistics Invoice Verification: Process XML Invoice
MRMH0001            Logistics Invoice Verification: ERS procedure
MRMH0002            Logistics Invoice Verification: EDI inbound
MRMH0003            Logistics Invoice Verification: Revaluation/RAP
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Hi,
Loop runs until a condition is met.
So to exit a loop you need to set a condition as false at a step and then it would exit.
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Hope this helps!
Regards,
Saumya

How to code a parallel 'for loop' and 'while loop' where the while loop cannot terminate until the for loop has finished?? (queues also present)

I've attached a sample VI that I just cannot figure out how to get working the way that I want. I've labeled the some sections with black-on-yellow text boxes for clarity during the description that follows in the next few sentences. Here's what I want:
1) overall -- i'm intend for this to be a subVI that will do data acquisition and write the data to a file. I want it to use a producer/consumer approach. The producer construct is the 'parallel for loop' that runs an exact number of times depending on user input (which will come from the mainVI that is not included). For now I've wired a 1-D array w/ 2 elements as a test case. During the producer loop, the data is acquired and put into a queue to be delt with in the consumer loop (for now, i just add a random number to the queue).
2) the consumer construct is the 'parallel while loop'. It will dequeue elements and write them to a file. I want this to keep running continuously and parallel until two conditions are met.
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      ii. the queue is empty.
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Here's the problems.
1) in the "parallel for loop" I have a flat sequence structure.. I haven't had time to incorporate some data dependency into these two sequential sections, but basically, I just care that the "inner while loop" condition is met before the data is collected and queued. I think I can do this on my own, but if you have suggestions, I'm interested.
2) I can easily get the outer for and while loops to run sequentially, but I want them to run in parallel. My reasoning for this is that that I anticipate the two tasks taking very different amounts of time. .. basically, I want the while loop to just keep polling the queue to get everything out of it (or I suppose I could somehow use notifiers - suggestions welcome)... the thing is, this loop will probably run faster than the for loop, so just checking to see that the queue is empty will not work... I need to meet the additional condition that nothing else will be placed in the queue - and this condition is met when the for loop is complete. basically, I just can't figure out how to do this.
3) for now, I've placed a simple stop button in the 'parallel while loop', but I must be missing something fundamental here, because the stop button is totally unresponsive. i.e. - when I press it, it stays depressed, and nothing happens.
suggestions are totally welcome!
thanks,
-Z
Attachments:
daq01v1.vi ‏59 KB

I'd actually like to add a little more, since I thought about it a bit and I'm still not quite certain I understand the sequence of events...
altenbach wrote:
zskillz wrote:
So i read a bit more about the 'dequeue element' function, and as I understand it, since there is no timeout wired to the dequeue element function, it will wait forever, thus the race condition I suggested above can never happen!
Yes, you got it!
As I've thought about it a bit more, there's a few things that surprise me... first, the reason the 'dequeue element while loop' errors is not because there's nothing in the queue, it's becaues the queue has been released and it's trying to access that released queue... However the problem I have is this --- Even though there's no timeout wired to the dequeue element, I still would think that the while loop that contains it would continue to run at whatever pace it wanted -- and as i said before.. most of the time, it would find that there is nothing to dequeue, but once in a while, something is there. however, it seems that this loop only runs when something has been enqueued. the reason I say this is illustrated in the next code sample MODv2 that's attached below. I've added a stop button to the "queue size while loop" so the program runs until that is pressed. I've also added a simple conditional in the "dequeue while loop" that generates a random number if it a button is pressed... but this button is totally non-responsive... which means to me that the "dequeue while loop" isn't actually continuously running, but only when an element is added to the queue. this still seems almost like the 'dequeue while loop" waits for a notifier from the queue telling it to run. can you explain this to me? because it is different from what I expect to be happening.
rasputin wrote:
I tried to open your VIs but it doesn't work. LV
is launched, the dialog box (new, open, configure...) opens and then...
nothing. Not even an error message. I guess it isn't a problem of LV
version or a dialog box would appear saying this. Could you, please,
send a image of the code?
Thanks,
Hi Rasputin, I'm using LV8. I assume that was your problem, but who knows. I've attached a pic of of altenbach's solution since it's what I needed.
thanks
-Z
Message Edited by zskillz on 10-20-2006 11:49 AM
Attachments:
daq01v1MODv2.vi ‏63 KB
daq01v1MODpic.JPG ‏116 KB

Stopping labview loop when terminating teststand

Hi,
If I have a labview step which is called from teststand, which is in a loop, what property can I query (or does one exist), where I can conditionally exit my labview loop when the "terminate" button is pushed in teststand? I see there are "termination monitor" tools in the teststand palatte in labview, but the "terminating" boolean does not go true when I initiate the terminate in teststand. I have a simple test vi set up to test it, does not seem to function this way.
Thanks
David J.
Solved!
Go to Solution.

David
see attached example with TS 2010 and LV 2011. It shows how to use Termination Monitor and how to use LV modules to close asynchronuously running VIs.
Norbert
CEO: What exactly is stopping us from doing this?
Expert: Geometry
Marketing Manager: Just ignore it.
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TerminationMonitor.zip ‏21 KB

Set a container element inside class to exit a loop

Hi,
I want to set a container element inside a class to exit a loop.
The element is marked as import/export parameter and the binding from the task to the container exists as well.
The loop has a condition &finish& = X but I cannot exit the loop. Looks like the value gets never updated in the container.
When i am using a container operation to set the element its working but i want to do this out of my method in the class.
Is it not possible to change a container element inside a loop without using a container operation?
Thanks,
Christoph

Hi,
Using the container operation is a good method to solve the problem. But if you intend to do that in the method coding itself then you will have to have it as the export parameter of the method. You can view all the import and export parameters of a method by going to the Business Object Builder (SWO1) and then choose the method and click on the "Parameters" Button. Once you are done with the interface of the method use that method in the workflow builder as a task and in the binding there are two rows. One for the import that occurs just below the container elements and the export parameters appear below the import in a separate window. Make sure you have the binding set there too as this is where you can transfer the container elements back to the workflow container from the task container and it should work. Maybe you are missing that in the binding.
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EXITING FROM LOOP

if in a loop iam checkin a condition n if the condition satisfies then which is the best way to exit the loop.

Hi Sushant,
Use EXIT in the LOOP after the condition .If u use STOP it will exit from the Program.
Try this example creating a Program by uncommending EXIT and STOP.
DATA: t_mara TYPE STANDARD TABLE OF mara.
DATA: w_mara TYPE mara,
          sum     TYPE i.
SELECT matnr mtart FROM mara INTO CORRESPONDING FIELDS OF TABLE t_mara
WHERE mtart EQ 'KMAT' OR mtart EQ 'FERT' OR mtart EQ 'LGUT'.
sum = 0.
IF sy-subrc EQ 0.
SORT t_mara BY mtart.
LOOP AT t_mara INTO w_mara.
    IF w_mara-mtart EQ 'LGUT'.
      sum = sum + 1.
EXIT.
      *STOP.
    ENDIF.
ENDLOOP.
ENDIF.
WRITE : sum.
Reward Points if useful.
Regards
Avi...

How to stop while loop when a specified function is terminated?

I want to make a program which has 2 thread, one of which is to control some devices, and the other is to measure outputs of the devices.
To do that, I should make a 2 independent loops, but there comes a problem here.
I want to terminate 2 loops at the same time, but it's difficult for me to do that, because when I try to notify upper sequence's termination to lower loop by some value change, they have some dependency.
That's why I need your help. I want to know how to stop lower loop when the upper sequence's termination keeping their independency.
Please let me know. Thank you.
Attachments:
help.JPG ‏200 KB

Is the upper loop commanding the lower loop at all? I would think you would have some type of communication between the loops. Just use that communication to send a stop command. Or the next best way is to just simply use a notifier.
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Exit a loop when the condition in if succeed

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