what is the difference between LV general and LV RT if we consider I want to read the output of a temperature sensor online??

[elahetal]

Hi everybody,

I am very new in LV and I need to read my temperature sensore outputs online in order to make needed changes to the system each time that the temperature changes. If I use LV genral or LV RT??

Thanks

[Matthew_Williams · Accepted solution]

Hi elahetal.  The LV vs. LV RT decision really depends on what your timing requirements are.

RT isn't necessarily about being as fast as possible, but rather as consistent as possible.

If you have a measurement that must be taken every 100mS +/- 2mS then you pretty much have to use RT.  A general purpose OS like Windows will randomly go off and do other things (read a cd, feed the printer, index the disk, etc.), causing your measurement to be late.

An RT environment will allow you to determine precisely when the system should do what.  The trade-off is that the RT environment is somewhat restricted, in that you don't have all the bells and whistles of a gp OS.

If your measurement must be taken every 15S +/- 10S then you may very well get away with standard LV on a PC.

In some instances, a combination works well.  For example, RT on FieldPoint or CRIO to handle the time sensitive issues and LV on a PC to handle the user interface and data analysis.

Hope that helps, please elaborate on your requirements if you wish.

Matt

[elahetal]

Thanks a lot Matt, you exactly mentioned the points that I needed.