Read CAN Interface of USB-8473 by programmation

[Cisco]

Hello,

I'm looking for an example to obtain the CAN interface name of my card usb-8473. I've developped an application for colleagues and I don't know the CAN interface name they use (CAN0, CAN1, ...). It will be great if I could read this name in my application, to correctly set the object name of the CAN communication I'm configuring and opening.

As joined, an example I've started but I cannot finish.

Data location in MAX:

I'm working with:

LabVIEW 2012 SP1 (12.0.1f3), 32 bits

MAX 5.4.0f0

NI-CAN 2.7.4

Thanks,

[moderator1983]

Find the attached code.

[Cisco]

Thank you moderator1983.

Unfortunally, it doesn't run in my case. It's a CAN card, not supported by the DAQ driver... the vi you've send give me 3 empty tables...

[moderator1983]

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@Cisco wrote:

It's a CAN card, not supported by the DAQ driver..

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Hi Cisco, this property node has nothing to do with the DAQ driver or DAQ devices...!!

Please check its description.

I dont know, but you might be correct, as this is you who actually running it and getting no results...!!

[Cisco]

Hi,

i think it' wrong. In the detailled help, it is precised that is a DAQmx - system property (I work with a french version of LabVIEW).

The link in red box go to another page. It's written that this property give data of NI-DAQmx configuration...

I cannot see my CAN usb card with this property. In the example of my first post, the element "USB-8473 (High-Speed CAN)" appears inthe table.

Perhaps with ActiveX?

[thoult · Accepted solution]

If it were an XNET device it would be discoverable in a similar method, but I *think* the only way I've found to do this in the past is to provide an array of interface names and use ncOpen.vi. Something like the following:

Edit - you can easily try something similar to create an array of connected interfaces (if you have multiple devices)

[Cisco]

Hi thoult,

Thank you for your idea ! I don't know if it is the only way, but it is a good way. I can use my first post example to determine if a usb-can card is connected, and your example to choose the good can interface. The result:

[nathand]

The function you want is ncGetHardwareInfo in the Frame API palette. See the help for exact details on how to get the device name.

[thoult]

Ah yes - you can just cycle through cards/ports to list all the interface numbers.

[nathand]

This is a lot less code for a similar result, using ncGetHardwareInfo: