fifo shared variable programmatic access

[Hamilton_Woods]

Good evening!

I have a question regarding programmatic access of shared variables.  I understand that to

change the IP Address of the remote computer "on the fly", I need to replace shared

variable nodes with programmatic access 'Read Variable' and 'Write Variable'.  I have done

this for network-shared variables that have aliasing enabled. 

For network-shared variables that also have RT FIFO enabled, the option for replacing with

programmatic access is disabled.  I manually replaced the nodes with 'Read Variable',

but nothing happened.

Does anyone have a suggestion?  I am using the RT FIFO's (one for timestamps and

another for an array of 97 data values) to monitor measurements from a Compact RIO on

a Windows PC.

Thanks,

Hamilton Woods

[Hamilton_Woods]

Update:

I have had a suggestion to consider using network streams instead of RT FIFO network-shared variables.

I am desiring to pump timestamp and measured data to a Windows PC from a Compact RIO.

Any other suggestions for how to do this? 

Any areas of concern for using network streams?

Thanks,

Hamilton Woods

[ShishKeBobby]

Hi Hamilton_Woods,

If the timestamp is part of the array you'll be sending over the network stream, then a network stream would be fine to use to send your data.  I'm unsure why you can't replace an RT FIFO with programmatic access, I'll look into this further.

Regards,

[Hamilton_Woods]

Bobby,

Any discoveries regarding programmatic access of RT FIFO network-shared variables?

Thanks,

Hamilton Woods

[ShishKeBobby]

Hi Hamilton_Woods,

We're still looking into this internally.

Regards,

[ShishKeBobby]

Hi Hamilton_Woods,

It looks like you can still programmatically do this, however the functionality to drop a Network Shared FIFO then replace it with programmatic access is disabled.  I'll go ahead and file a request on this.  Thanks for the heads up!

Regards,

[Hamilton_Woods]

Bobby,

I already attempted to perform a programmatic access of the RT FIFO by using the read shared variable

function in the same way that I am using it to read other shared variables.  It doesn't work for me.

I intend to replace the RT FIFO shared variables with network streams when I get a chance.

Thanks for your help,

Hamilton Woods

[MorganRock]

I come across the same question: programmtic acess to FIFO shared variable.

It doesn't allow to do this in LV2014.

Any update? 

Thanks

Yan

[tcap]

Hello Yan,

It seems that this thread is quite old and kind of out of place.  Would you mind creating a new thread for this question in the LabVIEW RT Forum?

Regards,