How to repeatedly save my data ?

[keeper]

Greetings me newbie,
How to repeatedly save my data ?Here i can only save the data once?Thanksyou

[DavidT]

Hi,
Set your 'Open/Create/Replace.vi' to 'open or create' and set the 'write file.vi' posmode to 'end'. This will append any new data to the file.

[keeper]

Greetings,
What you meant by set the 'write file.vi' posmode to 'end'? By the way my function is already set to open and create.

[DavidT]

Hi keeper,

The 'Write/Create/Replace File.vi' is set to 'create or replace' in your example.
Nevertheless, on the 'Write File.vi' wire right click on the 'posmode(0:2)' terminal, select 'create constant' and choose 'end'.

Hope this helps.

[keeper]

Greetings,
Sry but it still cannot be done.It still only records one data only.

[dcwork@hotmail.com]

Hi,
Put the open/create/replace file.vi and close file.vi outside of the while loop.

Brs,

George.

[keeper]

Greetings,
Cant do that as it might cause some errors in other events...Anyone else can help me?Thanks you

[IanW]

Hi Keeper

I modified your program as DavidT suggested and it works fine ie a new row of data every time you press the Save File button. I would have another try.

[keeper]

Greetings,
But i want it to save all the data coming in when i only press the save button once. when i wanna stop saving i press "stop" or "something" to stop saving...Not everytime i press then i saved the data ... i can do it last time b4 i had the event structure but not wif it i cannot do it.. Thanks you

[IanW]

Hi Keeper
The code in the event stucture only operates once when the button value changes, for continuous logging you need to bring the file vi's out from the event structure into the main body of the while loop. See the attached picture. Watch out though your Save File button has it's 'Mechanical Action' set to 'Latch when Released' you need to swap this to 'Switch when pressed'. (Right click on the button to change this.

I hope this gives you what you're looking for.