Rbdstate - Send ALEaudit in time critical scenario

Hy all,
how can I use RBDSTATE report to send Acknowledge IDOC to my XI 7.0 server in a time critical scenario? I use Ack IDOCs in a time critical complex BPM that attends audit to continue with the following steps of transformation and send xml messages to ERP.
Problem is that an OSS note says to schedul job RBDTSATE with a time period higher 5 minutes; this time is too high for us (BPM contain more steps that needs an ERP ack).
How can I solve this issue to simplify and make more fast the BPM?
Thanks in advance,
Marco

Hi Chris,
Is the "subVI" in question really a subVI of the higher-priority VI? If yes, that would make it run at higher-priority as well -- probably not what you want to do.
See this for further details: http://digital.ni.com/public.nsf/allkb/D7E975105812F0C586256A6B005B4957
I would keep the two VIs separate (to keep their priorities separate) and transfer data via LV2-style globals between them.
-Khalid

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Go thriugh this link.
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Blue Print: Assume the client is already having sound legacy system in place.
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2 It depends. EverNote actually
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Hi friends,
I had written a program to send mail. Everything is fine, when i send first time. But if I try to send mail 2nd time, It gives the error:
Exception in Connect: IOException while sending message
Here is the complete code what i had written, It successfully connects using t.connect();
the problem in t.send();
output on JBoss Console is :
Inside Action
After Transport t = session.getTransport(protocol)
before t.connect()
after t.connect()
Exception in Connect IOException while sending message
import java.io.*;
import java.util.*;
import javax.activation.*;
import javax.mail.*;
import javax.mail.internet.*;
import javax.servlet.http.*;
import org.apache.struts.action.*;
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         String cc = request.getParameter("cc");
         String subject = request.getParameter("sub");
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              messageBodyPart = new MimeBodyPart();
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              messageBodyPart.setFileName(attachmentFile.getName());
              multipart.addBodyPart(messageBodyPart);
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              System.out.println("before attachmentFolder");
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Problem only comes, when i send 2nd time or more. What is the problem? Please help me out.
Thanks for your response in advance. One more thing, Whether to send a mail & receive a mail, we need to create different sessions. one for sending & one for receiving mails.
Message was edited by:
Ashish.Mishra16

I don't see anything obviously wrong in your code. Try adding
session.setDebug(true);
You can use the same Session for sending and for reading.
A Session just encapsulates your configuration parameters,
so as long as they're the same for both usages, one Session
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ABOUT DATA SENDING IN idoc TO file SCENARIO

How the data is sended in idoc to file scenario?
what is the difference in sending data through BD10, BD14 and WE19 ?
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Hi Rammohan
>> How the data is sended in idoc to file scenario?
     Makeing settings in SAP R/3 side then based on the RFC
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Why is time-critical thread not interrupting sleepless high priority thread?

Hello,
I have two threads running in the same execution system on a real-time PXI platform. The time-critical thread sleeps using "AI Single Scan.VI", and acquires my data at a rate of 8000 Hz.
I have a slower high priority process that calls a DLL function to calculate some filter coefficients. This function call takes longer than 1/8000 s to complete, and runs in a loop, executing as often as it can (with new data from FIFOs).
I expected the time-critical thread to interrupt the the high priority thread without problem.
I am finding that unless I insert a LabVIEW delay (for example a wait for x ms VI) in the loop, the real-time system stops responding. With a small delay (ie 1 ms), t
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Any suggestions?
Thanks in advance,
Frenk

Here are a couple things to try/check:
1) Check the call library node in your high priority VI. If it's orange (runs in UI thread), your high priority VI is actually switching to the UI thread every time your dll runs. That alone is not a problem. But if your TC VI tries to update any control terminals, the TC thread will switch over to the UI thread to access UI resources, possibly while the dll within your high priority VI has a lock on those resources. Why does the dll have a lock on UI resources? Because it was running in the UI thread and got interrupted by the TC thread before it finished doing its business. Not likely, but possible.
2) There's another possible reason you're seeing this behavior. If the TC VI and the high VI call a mutual subVI, the subVI will be elevated to ALWAYS run in the highest priority thread irrespective of the actual caller (in your case, it's the the TC thread). Even when the *high priority VI* calls the mutual subVI, that subVI runs in the time-critical thread, which means there's a thread switch from high to TC, then back to high after the subVI finishes. And because high and TC VIs are in the same exec system, that mutual subVI will always run in the 1 and only TC thread alotted to that exec system.
So, while your TC VI is running, you're in the TC thread. While, your high VI is running, you're in a high non-TC thread, and when your high VI calls the mutual subVI, you're again in the TC thread until the subVI finishes.
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The fix: make your TC VI run in a different exec system. It will be given its own TC thread that no one else can mess with. When TC VI wakes up, it's guaranteed a TC thread.
I think there's a good reason behind why a mutual subVI ALWAYs runs at the highest priority of all its callers, irrespective of the actual caller's priority...but I can't think of the reason at the moment.

How can I load a VI on my FP without needing a time critical Part

I would like run FieldPoint distributed I/O application on the FieldPoint Modul. But I do not need a true real-time application (time critacal Part). How can I use a VI on my FP that do not divide in the two parta (Control Loop and Communication Loop)

By simply writing a VI that does not sub-divide its functionality into two parts, you are able to download a non-time critical program to the FieldPoint RT module. The division of the loops is a function of how you implement the code and not directly a function of the LabVIEW RealTime engine.
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Regards,
Aaron

What is the Maximum Data can a file adapter can send at a time.

Hi ,
What is the Maximum Data can a file adapter can send at a time.Is there any maximum limit data can adapters will send.
can any one help on this.
regrads
Raghu

Hi Reddy,
I have raised the same question and I got correct answer.
Refer the below thread which will give u information.
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Thnx
Chirag

Why does that entire thread goes to sleep when we put a wait function in time critical loop?

why does that entire thread goes to sleep when we put a wait function in time critical loop but not when it is not time critical

Norbert B wrote:
Ujjval,
in a RT system, priorities have (in general) increased effect on the execution of the application.
It is recommended that you only have a single task in your RT program at "time critical". If you have two task "time critical" (that means you are running into issues caused by your quoted "feature"), you have a flaw in your application architecture.
Since LV 7.1, it is recommended to work with Timed Loops in order to prioritize tasks on a RT system. Timed Loops are executed on priorities between "time critical" and "above normal". Each Timed Loop will execute its content in a single thread in order to keep a good overview of the timing (like finished late [i-1]). Using those structures (and according settings) in a reasoned manner will prevent your RT system to run into priority issues.
Ujjval Shah wrote:
[...]also i would really appreciate if i can get more documentations regarding how LV creates threads and assigns subvis to them[...]
You will have a real hard time to go into this very deep. This is the feature of LV: you can just use multithreading (multicores) without the needed knowledge of scheduling and load balancing. This makes LV programming in general very easy in comparison to e.g. ANSI C (in regard of multithreading). So creation of threads, distribution of tasks to the threads are abstracted and most often not visible to the programmer.
There are some switches and levers you can "play around" in order to make LV to behave differently in this matter. But this most often requires deep LV knowledge and cannot be explained in a simple posting.....
hope this helps,
Norbert
Amen to that!
The question can not be fully answered without digging into the internals of the OS LV is run on because LV works with the OS and lets it do the scheduling.
Yes that note applies to pre- LV 7 RT. When run under RT the ONE Time Critical loop was guarenteed to stay determinisitic.
Since then the Timed Loop was introduced that allowed multiple levels of priority and later allowed us to assign which CPU the code would run on.
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction

Rbdstate - Send ALEaudit in time critical scenario

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