Hello,
Are you able to read from 2 counters using these VI? I just ran the Event Count (multiple counters).vi on my PCI-6070E. Because this card only has 2 counters, I had to set my counter list to contain 0 and 1 only. I also had to delete the second Multi-Counter Set Attribute.vi because I did not have counters 3 and 4 available. The last thing I modified was the PFI number. I had to set this to a valid value for my device. After I did this, I was able to read both counters simultaneously. See if you are able to use this VI with your 6602. If you cannot read from all 8 counters try 2 counters.
Let me know your results.
Sincerely,
Sean C.
Applications Engineer
National Instruments