DAQmx read write sub vi empty channel

[VikashKumar23]

Hi,

I am new to Labview

I have created a sub vi to read and write from DAQmx.

I have attached sub vi with this post. 

when I add sub vi to one of my projects and select physical channel I/O I was not able to see any ports and lines.It's blank. 

Can anyone please analyse my read and write sub vi and let me know what mistake I have done as I was not able to select any ports. 

[DuncanW.]

Hi VikashKumar23,

You will need to have a physical channel in your system in order to link a physical channel to your LabVIEW program. You can either use physical NI hardware, or simulate it in NI-MAX. If you do not have a NI module on hand, you will probably want to simulate one.

Cheers,

Duncan W.

[JÞB · Accepted solution]

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[VikashKumar23]

Hi,

Actually, I have a physical NI DAQmx hardware which is USB-6509

I am interfacing it with SCB-100 breakout box. 

I have done several other projects with this hardware but without using a sub vi.

now i would like to use sub vi. Unfortunately I could not able to see any channels. 

I have attached additional file where you can see the channels i have used and it's working fine.