Re : read CAN bus object

[wilburwu]

Hi there,

I´m a new comer in the field CAN bus diagnose, and have problem with CAN object diagnose.

As I write my program just like the attachment, I received an error message.

I wanna poll a specified ID without reading the CAN net in whole.

How can I use the CAN object VIs correctly?

Thx!

[JB]

What is the error message ?

Which CAN interface are you using ?

PS : You should post these kind of questions to the Automotive and Embedded Networks board.

[wilburwu]

Thanks, JB

NI USB 8473 is the one I used, the error said that this interface do not support the functions.

PS: I´ve posted the message on the "Embedded Networks" board. 

[JB]

Unfortunately the USB-8473 doesn't support CAN Objects and furthermore needs a workaround to use it with the NI-CAN Channel API.

See this document and its linked documents. A PCI, PXI or PCMCIA interface will be needed for your application.

[AndreasStark]

JB is right, objects are not supported since the USB-CAN does not have an internal processor like the Series 2 CAN cards.

You could either use hardware filters to filter out all unwanted frames and keep CPU load down or receive all frames and filter them in LabVIEW.

Regards,