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Hi Francis, Thank you very much for your reply, it is a great help. I have now updated the Vi with your recommendations and it is working as I intended. regards, David.

Hello folks, I started working on a Labview project around this time last year but unfortunately had to shelve it due to unforseen circumstances beyond my control. However I've started back at it again but as you will see, im basically a novice in relation to any kind of programming. I am really keen to learn. I have attached a Vi I wish to use, as maybe one of four Vi's in a Labview project. When I run this Vi and then stop it, I wish for it to return to its default value i.e zero. I have tried some options such as an invoke node which worked for me in another Vi but alas has not worked in this one. Any help in relation to this issue would be much appreciated. Regards, David. pressure monitoring vi.vi

Thank you for your replies and apologies for the screenshots, won't happen again, I have now uploaded the vi with the original overall while loop removed. I am still at a loss as to how to get this to run in the sequence that I am looking for, so any pointers in the right direction would be a massive help and very much appreciated. Also thank you for the advice on books, I have just ordered a copy of "Labview for everyone" from Amazon so would hope to be solving little problems like this for myself in the coming weeks. regards David Download File:post-15725-1243522221.vi

Download File:post-15725-1243439508.doc Hi all, I am a mature student and very new to labview, I also have very little experience programming in any language so any help here would be great. My problem is that I have been working on trying to get a VI to operate in the sequence that I want for a few days now with little or no success. My hope is to get a hopper to start filling when I switch the "inlet valve open/close" switch on, then when the hopper is full I would hope that the "inlet valve open/close" would switch off and the "outlet valve open/close" would enable thus getting the hopper to empty. When the hopper empties I would like to be able to start the process over again by resetting the "inlet valve open/close" switch again. I have enclosed screenshots of both the front panel and block diagram of the VI. I also know that you guys will spot plenty of errors in the code so dont be surprised when you do. Again any help on this would be greatly appreciated and also if anyone could recommend a good book for Labview beginners written in simple english that would also be a great help. Thanks alot David