LabVIEW J1939 Examples Don't Update Values

Updated Jun 7, 2018

Reported In

Hardware

  • USB-8502

Software

  • LabVIEW

Driver

  • NI-XNET

Other

J1939

Issue Details

I am running a loopback test with a USB-8502 and a non-terminated CAN cable (193128-01). I am trying to run the J1939 Signal Input Single Point and the J1939 Signal Output Single Point examples, but my written values aren't updating on the reader program. Why is this happening? 

Solution

Firstly, confirm that there are no errors thrown. Since you are using a non-terminated CAN cable, if you do not have termination enabled through software then you will not obtain your expected data. Enable this with the Interface:CAN:Termination property on your reader program:
 
You also have the option of using a terminated CAN cable.

 

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