change my model of producer consumer with different types of orders

Similar Questions

• Producer consumer with the third loop model

  Hello everyone and thank you for looking at this.

  I have a problem that I thought for a while now on the execution of a third loop in a design model of producer consumer (with events).

  I use this type of model for a UI and am happy with how it works. However if I want to add a continuis loop model to test for example how can I control the loop?

  In my example (see table), I use a local variable to run them (or stop) the test and the same to close the application.

  I don't know why, but this feels wrong to me. Is there a better way?

  Thanks in advance

  Chuck

  Nickelback says:

  Is the problem with the consumer loop only runs when it receives a message from producer loops event.

  Nothing says that you can't have a consumer loop enqueue States to itself.  Of course, this is more in a State Machine in queue with the possibility for another loop to the States of the queue.

• Version compatibility with different types of devices 27?

  Hello, I would like to know the compatibility of version 27 with different types of devices. Where can I find this information?

  All spectators are supported with a version of spectator folios v27 target.

  Neil

• How to change the name of the attribute with ALTER TYPE?

  I have a question. How can I change the name of the attribute with ALTER TYPE? example:
  
  CHANGE the type of ATTRIBUTE to CHANGE type_attribute...
  
  What should I put in «...» "to change the attribute name?
  
  Thank you...

  What should I put in «...» "to change the attribute name?

  You can not. You can change the data type.

  You can delete and recreate the attribute:

  ALTER TYPE type DROP ATTRIBUTE type_attribute;
  ALTER TYPE type ADD ATTRIBUTE new_type_attribute data_type;
  

  Max

• Using the producer/consumer with GPIB/VISA model

  Hi all

  So I have a .VI I learned to communicate with my camera, I joined. I tried strip down as much as possible, just to understand the concept. It basically just takes a resource VISA name, use this open VISA, then uses the same resource VISA to write a command that reads the data from my machine (xall?) and then bed in 500 bytes and which prints. If it works, and it's good.

  I try to use producer/consumer model for doing essentially exactly what this guy. I have a RLC, I want to press a button that starts my measure, I want him to taste several times per second, save the data in a text file or .csv and then stop when I press the stop button. Thus, he will be given indefinitely potentially.

  I would like to have the data in a format something like:

  Time C R

  0 5.0 4.3

  ... etc.

  I read the link of model p/c above, but my LabView knowledge is still low. Currently, my plan is to take the part of read/write of my attached VI, which are a sub - VI and then put that in the pink box in the VI for the producer/consumer above page that is labeled "produce data to be placed in the queue":

  

  What prevents me to do this, it's that I can't get the piece of read/write to work properly as a standalone Subvi.

  What is the right way to go about this?

  Thank you!

  I put if you actually found data of your instrument.  Your instrument is not made to take new measures or just send you the last reading, she did.

  Insofar as the file IO, I recommend that you learn to use the palette for the file IO functions.  You need to create your file before your loop, write in a text file inside and then close after the loop.  I don't do the thing the comment on the express VI entry will do what you want.

• events producer consumer with notifiers

  Dear users of LabView,

  I would like to ask your advice on my project (see the attachment of files). For the beginning, I did only the "backbone" of my project, that's what you can see in my VI. My project will have the following features:

  -Start and stop action possibly (and also plot data to the chart and saving the data to the file)--> here is some time a loop to record data ranging from DAQmx (USB6009) and another while loop with rates of different loop to rise in voltage output amplifier of the magnet.

  -During the measurement, or if the system is idle, the user is able to read files of measured data and evaluate the measured data, etc... (so there will be more features...)

  I decided to use producer consumer structure with events and the authors of notifications, and I also use the dynamic user event to be able to communicate to the consumer with the producer (where I have my machine of the State as in a shift register).

  Please comment on my VI, what do you think? Maybe I should use the state machine (the shift with the pole of the State Register) in the lower loop? I could also use up queues of the notifier, but since I send only orders and the values of the parameters (not streaming broadband data) I guess that the declarant is fine?

  Thanks for the tips!

  The code you posted looks like a good start.  The architecture is very similar to the measurement sample continuous project comes with LabVIEW 2012.

  A few things I noticed:

  1. I would usually use queues instead of filers (unless you want to manage only the last command and not all orders in the order they are received).
  2. You don't need the registry change in the top loop (structure of the event).  You inadvertently send a length of measure and other commands parameter since you replace only the command.  Probably, this is no problem for now but could be a problem later.
  3. I think the user events are a great way to manage cases of judgment where the consumer is able to report to the producer that the application must exit loop (this is how we do in the sample project).
  4. Your case 'Init' confuses me a little.  It is read length control measure and send a user event in the event that, in the structure turn immediately place a measure command. Once I see a control in a loop of consumer as it hurts a bit uncomfortable. Why not have the value "start_measurement" to change event read the length of measure command and send it as part of his message to the consumption loop. Then the loop of the consumer can Init and self talk to start the measurement.
  5. You may need to rethink your strategy mistake in the case of the measure. Currently you do not stop a loop if an error occurs, and allows you to keep the error between iterations of the loop information shift registers.  Therefore, if an error occurs in one of these loops you can never hear about it.
  6. In general, using the error state as the main way to stop a loop from consumers is a bad practice. I'd rather see a "Shutdown" command which causes the consumer to stop loop. It is more scalable and less likely to be triggered by the accident.

  Good luck with the rest of your application.

  ~ Simon

• Adding lines with different Types of dashboard

  Hi all

  I am trying to add lines to a file in Adobe Acrobat X Pro, but I need them to have cirlces, triangles, x, etc. I see that Adobe already has different types of line under the Properties tab for a line, but I was wondering if it was possible to add/import of new line styles.

  Thank you

  Allie

  Hi allieeuropa,

  According to my understanding, there are no other ways to add new lines of style to the PDF document.

  Acrobat includes a markup various options by which you can draw lines as well as to take other forms on line (as illustrated below):

  

  Please specify what you want exactly for.

  Hoping to hear from you.

  Kind regards

  Ana Maria

• Producer consumer with inputs and outputs analog and digital

  Hello world

  I'm working on a program of control system for some practical test work. Currently, I am working on the data acquisition of the Labview program component. My architecture is consumer-product loops with a what. My system will have analog inputs, outputs, analog inputs and digital outputs. It is not a criticism of time sytem, but I wish that all the acquisition of data to synchronize. I enclose my program because it is at the moment. I have difficulties to get all the data in the since that I have two types of data. In addition, I don't know if I have synced the four sequences of read/write correctly. I would be very happy if someone could take a look at my program and give me some advice. Thanks in advance.

  
  

• The model resource management lots with the flexibility to order step

  Hey, the people of Teststand.  What is the best way in 2014 Teststand to do this?  I'll implement test DUT 4 in parallel using the model of batch processing.  The test sequence is in two parts.  2 DUT at a time can run part 1.  While 2 DUT are testing part 1, I want to than the other 2 DUT to test of part 2.  Then when they are done part 2, wait for part 1 slots become available and then run part 1.  And these DUT who had run part 1 all first then work part 2.

  Thank you.   -Joe

  Joe Czapski

  Sonos

  Boston, Massachusetts (United States)

  As I understand it, a step of the automatic planning to the next level would be perfect for this:

  Automatic calendar

  Use Auto demand resources ("Part 1 - Slot 1", "Part 1 - Slot 2") / / these are two variants different resources
  steps that part 1. Use the acquired lock output if you need to know what slot

  End

  Use Auto demand resources ('part 2 - Slot 1', 'Part 2 - Slot 2') / / these are two variants different resources

  steps that part 2. Use the acquired lock output if you need to know what slot

  End

  End

• Best survey practice: tiering with different types of storage drives

  Hello

  We recently received a new SAN Equallogic, and I am deciding the implementation. Our first unit (currently only one member in a swimming pool) is a PS4100 with 24x600GB 10K SAS. The new unit is a PS4210 with 12x4TB 7.2 K NL SAS.

  Should I leave units in separate classes in the same group and cut new LUNS? Should I add the PS4210 in the existing pool and use the Storage Tiering?

  I'm a little hesitant to how Storage Tiering will work, I read a little when the mixture of types of disks, storage tiering will be balanced on the ability, and most of the i/o load will hit the higher capacity of SAN.

  Any contribution is appreciated. The storage is used for the storage of data VMFS with vSphere 5.5 cluster. Run EQL firmware 8.1.0 on both units.

  Hello

  Either will work.   As a general rule, speaking of small members 10K / 15K mix with very large 7.2 K members RPM can reduce the effectiveness of the fastest disks.  As more data on the largest Member.  This is especially true if they carry the same RAID type.

  I would start with them in their own pools.  Later, you can merge two pools quite easily.  The other way is more complex.  Since you need to remove a member, leaving the data in the original pool.  Then you can move volumes of the new pool.

  Also, please check Dell TR1091.  It explains how to configure the storage w/EQL ESXi.

  en.Community.Dell.com/.../Download

  A small change that has not been added that TR is the NOOP_TIMEOUT value.  The document shows you how to change the LOGIN_TIMEOUT value to 60.  In this menu is the NOOP_TIMEOUT, which gets the value of 30 seconds.

  Finally, make sure that the virtual machines themselves are configured with their disk values set on 60 seconds Timeout.

  With the EQL Firmware download is a PDF entitled ' iSCSI initiator and optimize your SAN environment for high availability of the OS considerations "which explains how to make the necessary changes.

  Kind regards

  Don

• Need help with different types of conditional logic in a custom PDF

  Oh the life of a developer - get handed something a non-geek thinks is 'easy' with an unrealistic calendar, and you've never done before :-)

  Asked me to take a PDF custom built by a member of my group and make some changes.  I am running Win7 and using Adobe Acrobat Pro DC.

  What I have to do is essentially variations around a conditional logic; for example:

  If Renseignez Checkbox1, Checkbox2 becomes locked

  If Checkbox1 is filled, ComboBox2 becomes mandatory

  If the user has completed the PDF saved as 'Customer_0123' and goes back in to make changes, may I point out what has changed?

  I'm (very very) new to JavaScript and so I was confuse through some documents, but the "most recent" document, found at Adobe is 10 years old, and I'm not sure that it is always topical.

  Any help would be appreciated...

  Thank you

  Chris

  The best way to associate scripts with boxes is to use the MouseUp event. In this case you can access the value of the new field via event.target. value.

  And Yes, it is correct re the JS Console.

• Works with different types of vector

  So, I'm working on ways to work with vectors. So if I have a method that makes things with vectors and returns a new vector

  function intersection(v1:Vector.<XML>,v2:Vector.<XML):Vector. < XML > {}

  var result: vector. < XML > = new Vector. < XML >

  understand which elements are in the two vectors and in the result

  return the result;

  }

  For the moment, I work with XMLs vectors, but what happens if I wanted to do this with strings or Sprites or something like?

  I do a different function to each manage? Or is there a way writing that he accepts any type of vector and return one of the same?

  Yes, it'll always be the case for a function that returns a * data type and you are implicitly that casting as a specific data type.  It doesn't matter whether you use specific vector data types or any other type of data.  the compiler using strict is always going to show an error.

  explicitly cast your value returned (as has) or not to use the compiler in strict mode.

• Catalogs with different types of files

  My wife and I travel with one each, and my computer has a larger hard drive.  These last vacation, I downloaded all the pictures we have taken each day on my computer and then converted all RAW photos in JPEG format. She was then able to import the JPEG images in LR on his computer and make the selection of the image, Keywords, etc. (no module to develop work).  I want to now use the catalog, she created but on my computer so that we can work on RAW images to edit.  IS there no way to export the catalog of his computer, import it to mine, and then make the point to appropriate RAW images (the names of the images are the same, the only difference is the file type)?

  For Lr, JPEG and RAW files separate pictures, there is therefore no way to have Lr to associate the raws of jpeg metadata, for example it won't renovate your raws with metadata jpeg of your wife, another a pair at a time, I mean.

  That said, there are ways to synchronize the metadata and/or development settings (all at once), if you are ready to use a plugin, or are sufficiently savvy to develop a batch process of exiftool to do.

  Example plugins:

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  They are easily found via Internet search.

  SoC

• unite with different types of data

  Hi all
  
  I am working in Oracle 10 g R2.
  
  I have the following function and each record would have one of the below fields filled... where Im trying to get the value non-zero to be the 'actual_data '. When I try to run I get the following error
  
  VALUE_NBR is a NUMERIC field in the table
  VALUE_DT is a DATE field in the table
  VALUE_CD is a VARCHAR2 in the table
  VALUE_TXT is a VARCHAR2 in the table
  

  ORA-00932: inconsistent datatypes: expected NUMBER got DATE

  COALESCE(VALUE_NBR,VALUE_DT,VALUE_CD,VALUE_TXT) AS ACTUAL_DATA,

  Please suggest me a solution or an alternative... I tried NVL... who had the same error as well.
  
  
  Thanks in advance
  HU

  Convert the dates and numbers to strings:

  coalesce( to_char(value_nbr)
          , to_char(value_dt, 'yyyymmddhh24miss') -- or some other format mask
          , value_cd
          , value_txt
          ) as actual_data,
  

• What is the fastest method producer consumer. Queue, RT-FIFO, event

  Hi all

  Another question completed for the pro:

  I recently inherited the labview code that uses RT-FIFO for the transfer mechanism in the architecture of the producer consumer.

  The code was first written in 3-4 years and is currently in LV8.6. It is possible that the reasons for the architectural decision no longer exists.

  I am qualified using a producer consumer queued architecture,

  I understand the RT-FIFO Architecture.

  I started using an architecture based on events from the user.

  (I have attached samples of each)

  I also see the existence of a priority queue

  Each method has its own capabilities and gaps, that hand, nobody knows the relative performance of each method.

  (Assuming that the only process)

  I would expect RT-FIFO to be faster, there seems to be a version of low characteristic of a standard queue.

  What is the perfornace hit to use a coding user-friendly queue more

  RT-FIFO description talks about commications between the time-critical and lower priority threads.

  Until today, I thought that the queues had the same capacity.

  

  I've included an event method that I commonly use for review by peers and help from other users...

  It allows to:

  1. several producers with different types of data

  2. process 37 production order.

  3 allows asynchronous verification of functional notifiers such as stop, start and abort.

  4. in a system not real-time, it can include interactions of façade.

  What I do not understand on this subject, that's what are overhead or thread priority changes that may occur using this architecture (it solves a lot of problems for me).

  Thanks in advance,

  Hi Timmar,

  Here's a KB article on some frequently asked questions about the RT FIFO: http://digital.ni.com/public.nsf/allkb/7AE7075AF1B2C58486256AED006A029F?OpenDocument

  The more relevant question is #4, I posted below.

  What is the difference between RT FIFO and queues? 
  Functionally, RT FIFO and LabVIEW queues are two pads of first in, first out. However, here are the main differences between them:

  • RT FIFOs run deterministically in LabVIEW and evanescent code queues are not. This comes from the fact that queues use block calls during read/write to the resource shared, while RT FIFOs use non-blocking calls.
  • RT FIFO are fixed size while queues develop when items are added to them.
  • RT FIFOs will execute the code, even if there are input errors. They can (and will) produce new errors and spread the existing errors.
  • Queues work with any type of data, while the data types that can be used with RT FIFOs are limited. Generally any type of data involving allocations of extra memory can be used with RT FIFOs to preserve determinism.

  Let us know if you have persistent questions!

  Ryan