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UDP Connection
macfernan
10-20-2017 08:59 AM
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Hi
New to labview and looking for a simple example
Im looking for an example of establishing a udp connection to a port on the local pc
and then using the udp write text function to output data to the port
thanks
Mark_Yedinak
10-20-2017 09:02 AM - edited 10-20-2017 09:03 AM
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Use the example finder. There are examples showing the very things you seek. LabVIEW ships with lots of examples and there is a wealth of information in them.
Mark Yedinak
Certified LabVIEW Architect
LabVIEW Champion
"Does anyone know where the love of God goes when the waves turn the minutes to hours?"
Wreck of the Edmund Fitzgerald - Gordon Lightfoot
JensG69
10-20-2017 09:03 AM
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from the LabVIEW taskbar, select Help -> Find Examples -> then search for UDP.
Regards, Jens
Bob_Schor
10-21-2017 09:20 AM
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You do realize, I hope, the advantages and disadvantages of the various communication methods utilizing TCP/IP that LabVIEW supports. I've not used UDP, and (fortunately) have not (yet) encountered a Project for which it seemed most appropriate (I tend to use Network Streams for LabVIEW-to-LabVIEW communication).
Bob Schor
M.Lichtenheld
10-22-2017 05:11 AM
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@Bob_Schor wrote:
You do realize, I hope, the advantages and disadvantages of the various communication methods utilizing TCP/IP that LabVIEW supports. I've not used UDP, and (fortunately) have not (yet) encountered a Project for which it seemed most appropriate (I tend to use Network Streams for LabVIEW-to-LabVIEW communication).
Bob Schor
What are the dis/advantages of the communication methods and why are you using network streams?
Bob_Schor
10-22-2017 09:45 AM
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If you open LabVIEW Help and look up UDP in the Index, you can find a link to "Data Communications Home" that takes you to a page titled "Data Communication Methods in LabVIEW" (at least in LabVIEW 2016). Under Buffer Interfaces, Networked, it discusses both Network Streams and TCP. Under Variable Interfaces, it discusses UDP.
- UDP supports single and multicast.
- UDP has higher performance than TCP for applications that don't require lossless data transfer.
- Low level protocol introduces implementation complexity.
- UDP does not guarantee client receives data.
When I want to send data from Computer A to Computer B over the network, I want the following things:
- Good performance.
- Robust performance.
- Simple programming (introducing fewer bugs and snags).
- Guaranteed Data Transmission -- loss of data is unacceptable.
Hence I use Network Streams. I would not consider UDP unless I had a multi-cast application where it didn't matter if the Client never got the data.
Bob Schor
