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Found 7 results

  1. I am hoping to take the CLD Exam in about 6 weeks. Here is my first attempt at the Boiler sample exam. Any comments and constructive criticism appreciated. Here are some images of the block diagram, that at least show my coding style and gives some idea of the architecture: Thanks! Mike CLD Exam 2 - Boiler.zip
  2. I have my CLED practical exam next Tuesday and I'm not sure if I should try to use one of the cRIO example projects that ship with LabVIEW. I have been looking over the sample projects and I can see an awful amount of local and global variables. I want to use an example to save time because I think the exam will be similar to the sample projects but I'm worried I would get penalized for using to many local/global variables. Has anybody had a look at the shipping examples for cRIO like the LabVIEW FPGA Waveform Acquisition and Logging on CompactRIO? What are your thoughts on them? Thanks. Lewis
  3. Hi All, I am going to do the exam of re-certification of CLD. I found just one exam sample on NI website. there is someone who have material that can help to study for exam? Other Sample or specific topic to study for covering all exam possible questions? Any kind of help will be very appreciated. Thank you in advance Vinicio
  4. Hello, Recently I'm trying to get my CLA and this is my third time practicing this example. I took about 3 hour and 20 minutes to finish it. (Actually I planned spent 3 hour to finish it , it's already the third time, I barely analyzed it , just coding) The first hour I took was for establishing ancestor classes, set up public data, sharing mechanism / VI (open/close queue references, access data base, main running VI framework.....etc) The second hour I spent on modules (error handler, user console, display console and sensor ) The third hour is implementation of the main module : Controller and I took another 20 minutes because some requirement tags I have no idea where to put. I know lots of people suggest do not use OOP in CLA, because it takes too much time. But I've been used to OOP style and not very familiar with tradition QMH programming. Something Still Confusing me , it's appreciated if leave some comments or suggestions to me. 1. I still think it's not fast enough, did I put too much code or redundant comments in it? (when I took my CLD, lots things slowed me down, like nervous,misunderstanding questions, strong AC, noise...etc , I think those will happen again in the CLA, ) 2. Did I comment in the proper way ? Did I comment clear enough for developers? (which is the NI examiner), if I don't build any child message class (for saving time), just leave the comments to tell how to build them, is that OK? I'm not sure whether I leave enough comments for understanding 3. I didn't build the timer FGV module, instead, I encapsulate a "local timer" in to controller.lvclass and directly manipulate it in the loop, is that an acceptable method in CLA? (I use this method in real world a lot, since I just need a local timer in one loop, I do not need set up another timer FGV to confuse me in the project) 4.Also the example has a data base module, I do not either. It's more flexible to me let the ancestor class handle the data base then share it to every child class. Elevator.zip
  5. Hi all, I am going to take my CLD exam on 06/09 . 1st, here are my sample exams solutions. They all seem to work very well , but not the ATM. About the traffic light I have done it with 2 types of timers one with a timer I made by using get date /time in Seconds and the other one with the elapsed time express VIs. They are identicall, I just replaced the get date time timer with the elapsed time express Vi. The 1st one works perfectly. The 2nd one works until it comesback to initialise after the 1st round then it fails to reset although I am explicitly setting it to rest in the initialisation state. This one reason I don't trust the elapsed time express VI. I'd rather spend time making my own timer than be dodged by the peculiarity of the elapsed time express VI. Can anyone explain to me what I am doing wrong when using the the elapsed time express VI. Many thanks to all of you who help. Those who don't ask questions don't learn. Those who learn will always ask questions. CLD Preparation 092014.zip
  6. Hi LAVA, This is my first post since joining the forum, so first of all hello to you all. It's a bit late really considering I have the exam tomorrow morning, but I did my last two practice exams this week for the ATM and Sprinkler system and thought I'd pop them up to see if anyone has some last minute feedback or wise words. Both are saved for LV 8.6. I've actually only been using LabVIEW for about 12 months and not as a full time developer, so I probably fall a bit short of the recommended experience, but the opportunity arose and I figured there's no harm in giving it a shot! Thanks in advance for any feedback or pointers... CLD Attempts 8.6.zip
  7. Hello, I am taking CLD in few weeks and going through the sample questions. I tried ATM Controller. It is fully functional but it took me 5 1/2 hour to finish it off and include documentation. There are certain things on the front panel which are not quite right. For instance, menu buttons are not being released. I documented on the front panel all the things which I thought could be useful to mention for an effective advice. Not sure if I can finish this faster by doing something different? Many thanks in advance Kind Regards Austin 11-02-2012.zip
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