application referance vi

[MTS]

what is minimum time i can achive to open referance of the rt machine which is connected to the network. i am geting around 5 seconds but it is not consistent some time it will take 25seconds how to achive the minimum time i will build dll to use this vis in other applications so i have reduce this time. so that it will not take much time.

[Bob_Preis]

Opening a VI Server application reference to LabVIEW on another computer, be it an RT controller or another PC, will depend on many factors.

1) DNS - If you're using the computer name (not the IP address), your computer has to query the DNS for the IP address first. This might take milliseconds or seconds...depends on the DNS among other things.

2) Bandwidth - Are you using a 10 or 100 megabit enet board in your computer?

3) Hub vs. Switch - Are you on a hub or a switch? Half duplex or full duplex? Does the hub/switch support 100 megabit throughput?

4) Is the RT system running a VI or exe when you try to connect to it? If so, is that VI/exe above normal priority and not sleeping at regular intervals?

There are lots of other factors to conside
r, and my point is not to get answers to any of these questions. Just wanted you to be aware of some of the problems with trying to make a network connection behave deterministically.