NiDCPower Wait For Event

Hello,
I am using the PXIe-4139 SMU to source a current sequence that starts when a trigger is received and takes about 40 seconds to complete.
After the niDCPower Initiate VI I have inserted the niDCPower Wait For Event VI with a timeout set to 300 seconds to allow for enough time to receive the trigger and complete the sequence. This VI waits for the Sequence Engine Done Event.
Now this works fine, however, when the user wishes to stop the programm for whatever reasons, they have to wait the full 300 seconds until the Wait For Event VI produces a timeout error and stops the programm. This is rather inconvenient. How can I change the programm so that the user can stop it even when the Wait For Event VI hasn't reached its timeout?
I tried this:
But this doesn't work. For some reason, I get a timeout error with code -200474 but the boolean operator returns FALSE.
Any other ideas?

If there an output on the wait for event VI that flags a timeout? If so, set the timeout short (like 100 msec) and wait for 3000 timeouts before continuing on.
Oh, and use an event structure. Timeout event (timeout=0) checks the wait for event, value change event for button breaks out of loop.
Mike...
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Hi,
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Hi All,
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Hi Experts,
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Edited by: mani_sg on Jun 18, 2009 10:21 AM

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HI....
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Hello Ajay,
Can you share with us what did you do to solve your problem?
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Message was edited by: Leandro Farias dos Santos Abreu

Need help on Wait for Event.

Hello all.
I faced an issue with wait for event step,Which goes like this.
For a workflow one of the fork branches there is a wait for event step(wait for manual release) . On development server when ever that event is fired (manual release) , the wait for event is capturing and completing the workflow ( This is the correct process).(PO release procedure)
On production system, this event is not been caught(after manual release is done) and and the workflow is not complete and still in progress. (even po is released manually) Which should not happen.
So what all the things i need to verify in the production to fix this. I cannot simulate any kind of event on production ryt. so please suggest.
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Cheers
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Hi Prasad
i doubt that in Production the event trace would be on. Check SWELS to see if you see the "OFF" button (this means the trace is on). If it is On, check SWEL to see if any event is there for rejection. You will have to ask example of the PO and search using the Key (PO number).
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Modak

Wait for event step..

hi all,
I have a wait for event step in my owrkflow and it is working fine. My problem us i am not able to trigger this event using program can anyone please let me know what i am doing wrong. following is the code i am using to trigger the event
DATA: key TYPE SWEINSTCOU-OBJKEY,
        object TYPE SWETYPECOU-OBJTYPE,
        event TYPE SWETYPECOU-EVENT.
DATA: event_id LIKE swr_struct-event_id,
        return_code LIKE sy-subrc,
        input_container TYPE swr_cont OCCURS 0 WITH HEADER LINE,
        message_lines TYPE swr_messag OCCURS 0 WITH HEADER LINE,
        message_struct TYPE swr_mstruc OCCURS 0 WITH HEADER LINE.
* CONCATENATE pernr reinr INTO key.
key = reinr.
object = 'BUS2089'.
IF action = 'APPROVED'.
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ELSEIF action = 'REJECTED'.
    event = 'CANCELLED'.
ENDIF.
* swc_create_object object 'BUS2089' key.
CALL FUNCTION 'SAP_WAPI_CREATE_EVENT'
    EXPORTING
      object_type             = 'BUS2089'
      object_key              = key
      event                   = event
     commit_work             = 'X'
     event_language          = sy-langu
     language                = sy-langu
     user                    = sy-uname
*    IFS_XML_CONTAINER       =
   IMPORTING
     return_code             = return_code
     event_id                = event_id
   TABLES
     input_container         = input_container
     message_lines           = message_lines
     message_struct          = message_struct
commit WORK.
however if i execute the FM SAP_WAPI_CREATE_EVENT by passing the values it works fine.
Thanks
Saurabh

Hi
however if i execute the
FM SAP_WAPI_CREATE_EVENT by passing
the values it works fine.
It will trigger only when you execute the above function module or
SWE_EVENT_CREATE because
You have a BO and an event associated with it now when you want to trigger this this event through program then you have to make a kind of mapping between BO and your program so thta's what this Fm does, when ever you execute the program as you are passing all the values to the Function the Evnt associated with the BO is triggered.
In order to trigger use SWE_EVENT_CREATE aand after calling this fucntion use COMMIT WORK statement
Could you let me know what condidtion did you write for the WAIT step to continue.
Regards
Pavan

Wait for Event not being picked up by workflow

Hi,
We have a purchase order workflow that has a parallel branch with a wait for event of 'Released' on it. The theory is that if a PO is released the workflow will finish. We have a situation where POs are created then released straight away by an idoc. In the event log we can see the release step created event and it correctly starts the workflow however the released event follows at exactly the same time and the workflow does not seem to notice this so it sends a released PO to a user to be released. I hope this makes sense. Can anyone think of a reason why this might be happening? Does it need a slight delay between the two events? In SWEINST the linkage is active and when I look at the entry for one of these POs it tales me to the correct workflow.
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Rob

Hi,
You could possibly create a check function module for the event. In the check function module you check some specific variable (if there is something you can use) - for example if the event was created by a certain user or if the PO is a certain type(?). Then if your condition is fulfilled, you raise an exception and no event will be triggered => no workflow.
This is just one possible solution.
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Wait for Event FIPP - Completed Logically Deleted

Hi WF Experts,
We have a WF for Release of payments.
It has 1 Fork with 2 parallel branches (both necessary).
1 Branch has the approval process for Amount release and the other branch calling the Account assignment approval Subworkflow.
The approval process branch has the until loop with increment counter and it picks the agents within the loop until a loop condition is reached and thereby till no more approvals required.
The other branch, before calling the subworkflow, it checks a WAIT FOR EVENT FIPP->COMPLETED with container element FIPPID.
Both these branches needs to be completed so that the forks gets ended and the wf comes out of the fork.
The approval process branch is working perfectly. But in the other branch the WAIT FOR EVENT FIPP->COMPLETED gets logically deleted and thereby, this branch does not go firther to start the Account assignment approval Subworkflow. This way the Fork with the 2 necessary branches does not end, and thereby, the WF stops here and could not go further to set release indicators (Which is a backgorund task).This will confirm the end of WF process.
When I pass the WI ID for this Wait event in the SWIA, it shows the status as CANCELLED.
The WF User log as a whole shows the status as COMPLETED as all the approvers has approved the release.
Why is the Wait for Event gets logically deleted ?Please advice.
Edited by: Sameer Anwar on Jun 12, 2011 9:17 AM
Edited by: Sameer Anwar on Jun 12, 2011 9:21 AM

Dear Experts,
Any update on this . I am unable to sort this out why the Workflow is getting stopped.
-Anwar

Wait for event step without callback

Hi All,
In 4.6C I have the following problem:
We have a workflow that has a fork with 2 branches, with 1 necessary for continuing the fork.
One of the branches has a dynamic parallel processing step on a multiline container element, where each parallel process is a wait for event step. For example if the multiline element has 5 records, than there will be 5 parallel wait for event steps on this branch, and if all 5 are completed, then the workflow continues after the fork and the other branch should be logically deleted (normal behaviour).
The other branch has a single wait for event step, if this event is received, the other branch's parallel wait for event steps should be deleted to continue.
The problem is that when the event for the latter single wait step is received, the step gets completed, but sometimes the parallel wait for event steps on the other branch are not deleted and the wokflow does not continue. The completed wait for event step shows that the callback is not completed yet.
I tried to fix these steps in SWPC, but in 4.6C it does not work for wait for event steps w/o callback. There's an OSS note for higher releases where this is fixed to enable SWPC for wait for events, so I copied it to a custom program and use that right now.
First question is why does the system not continue these workflow's when the event is received? My guess is that the tRFC calls get stuck and when the tRFC job reprocesses the entries, it does not do it correctly. For example lately we had a tablespace problem that caused some tRFC calls to go into error. The waiting steps in the instances were completed w/o callback. I reprocessed the tRFC entries, which created new entries in the Workflow logs showing that the events are received, but the workflows still hang.
Second question, it takes a lot of time to logically delete those parallel wait for event steps. When the event for the single wait for event is received and the workflow continues w/o problem, it may take tens of minutes from the receipt of the event until the parallel wait for event steps get deleted and the WF continues. Why does it take so long?
Thanks,
KK

Hi,
Regarding the delay and the hundreds of thousand SWW_CONT updates... the main workflow on one branch does a dynamic parallel processing of a subworkflow using a multiline container element that can have 50 or even 100 elements. So we can have 50 or even 100 subworkflows waiting for their event to be triggered.
The main workflow container contains many elements, some multiline with long structures, so in one instance the main flow had 8000 entries in SWW_CONT (each field of a structure is a separate record in SWW_CONT).
Now if I do the math, when this workflow loads all the container elements of the main flow into the 100 waiting subflows before deleting them and continuing along the other branch, it creates 100 times 8000 entries in SWW_CONT, that is 800.000 inserts!
And this was ONE single workflow.. Imagine when we have just a few hundred and they all want to continue at the same time...
Anyway, the beauty comes now....
I created a simple main flow with a single multiline import parameter USERS of object USER. It has a fork with 2 branches, 1 enough to continue. One branch is a user decision with 1 option: Continue. The other branch has a subworkflow and it does dynamic parallel processing with the multiline element USERS.
The subworkflow has one single import element USER of object USER. It has only one step, a wait for event, waiting for the DELETED event of the USER object.
That's the scenario.
When I start the main flow, filling the USERS parameter with two user objects, on the first branch it starts the two parallel waiting subflows with one user each, and I get the decision step on the other branch. If I check the subflow containers this time, they only have one USER object each.
Now if I complete the user decision, the workflow continues, logically deletes the subflows and completes. If I check the subflow containers after this, they all include the USERS multile container element with all the USERS I started the main flow with!
So this time it was a different main flow, different subflow, different events. I guess there can't be any custom code doing this, unless there's some generic workflow user exit somewhere.
Feel free to test this yourselves if you have 4.6C, quite easy scenario. Guess I'll try in ECC 6.0 too just to see...
And I'll report to SAP for sure.
Regards,
Krisztian Klausz

NiDCPower Wait For Event

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