Shared Variable Properties

[ttt1603]

Hello

Using shared variables with the waveform double type please explain the
significance of Network properties which shows options:
No. of Arrays
No. of Waveforms,
Points per Waveform.

Also elaborate for RT FIFO property in the shared variable. It has different
options like
single element, multi element etc. in the drop-down menu.

In which case it is required to enable & use this.

Thank you.

Regards,
Tej Trivedi.

[kishan.M]

Hi Tej,

Here there are few useful links which can help you to understand about shared variables in a better way.

https://www.ni.com/en/support/documentation/supplemental/06/using-the-labview-shared-variable.html

http://www.ni.com/white-paper/5484/en/ 

hope this helps.

Regads,

M.Kishan

[ttt1603]

Thank You, Kishan.M

I had gone through these links.

What I want to know is the significance of that 3 items for Waveform double type shared variables.

Thanks & Regards.

[RavensFan]

How much data you can buffer on the network.

Click the help button that screen.

[Jacobson-ni]

The help document that RavensFan is talking about is this

https://www.ni.com/docs/en-US/bundle/labview-api-ref/page/resource/dialog/variable/featurepacks/netw...

RT FIFOs are explained in a bit more detail at the bottom of this help document but you are mostly only going to use this when reading or writing to a variable inside of a timed loop in a real time VI. The RT FIFO functions should also be used in place of queues if you are communicating to or from a timed loop on a real time device. Not using this feature can lead to priority inversion because of shared resources between the reader and writer.

https://www.ni.com/docs/en-US/bundle/labview-real-time-module/page/sharing-data-using-shared-variabl...

[ttt1603]

I have 32 wavefrom arrays to write using 1 shared variable. In this case when I kept no. of arrays 1 or more than 32 it didnt make any difference in the output when I read the same variable. Then what is the significance ???