Continuous recording of DAQ software

[SReeves]

Hi, I am new to lab view and am trying to develop a monitoring system for one of our projects.  I am able to obtain and monitor all the imputs however when I try to save them only th first 100 are saved.  I have read through many forums and tried different apporaches to the problem but non seemed to work.  So far I tried increasing the buffer rate, which gave me more stored data but made the program run very unstable.  Next I tried to decrease the sample rate and this didn't work either.  So from there I tried the producer/consumer method but when I hooked it up my data type wasn't supported.  I tried to send the data through on a resister but it just recorded the same 100 points over and over. 

Any help would be appreciated, I have attached my VI, Thank you

[GerdW]

Hi SReeves,

So far I tried increasing the buffer rate, which gave me more stored data but made the program run very unstable.  Next I tried to decrease the sample rate and this didn't work either.

DAQAssistent buffer size and sample rate have nothing to do with data saving…

So from there I tried the producer/consumer method but when I hooked it up my data type wasn't supported.

That's a very nice approach. But you need to learn how to get rid of DynamicDatatype and ExpressVIs - then the P-C-scheme is perfect!

There's a function named "From DDT"…

tried to send the data through on a resister

How do you send data through a resistOr? Does the context help name the item that way?

Right now there are several issues:

- the data acquisition is in the loop, but the data saving is after the loop. THINK DATAFLOW: how should that ever save ALL data you want to acquire?

- For all your gauges/tank indicators you can show a digital display. No need for an additional numeric indicator…

You have a nice Windows user name… 🙂