Appendix C
Troubleshooting and Common Questions
©
National Instruments Corporation
C-3
addresses if necessary. If this does not solve the problem, you can try
to change the card’s address. In the Interface Configuration utility,
select the port and click
Edit
. Make sure that the port does not have an
address that conflicts with another device on the bus. You also can set
the interface to a visitor address. In this case, the card will find and take
an unused address. If this corrects the problem, find and change the
address of one of the conflicting devices. Return the card to a fixed
address.
•
Check for multiple copies of
nifb.dll
on the machine. If multiple
copies are found, NI-FBUS was incorrectly reinstalled. Uninstall
NI-FBUS, search for any remaining copies of
nifb.dll
, delete them,
then reinstall the software.
•
You can check the Windows Device Manager to see if Windows has
detected any problems or conflicts in the resources assigned to your
card. Your card(s) will appear under the
Fieldbus Adapters
category.
The Device Manager displays an exclamation mark (
!
) on the icon of
any card that has resource conflicts.
•
Check how many cards are showing up in the Interface Configuration
utility. Make sure that this matches the number of cards in the system.
Also check that the number of ports match the physical hardware
(one port versus two port cards).
•
Link masters do not always get along together if you have another link
master on the link. Try setting the card to be a basic device in the
Interface Configuration utility.
If a PCMCIA-FBUS interface is configured as a basic device, another
link master device must be present on this link before the NI-FBUS
process will start up. For more information about Basic and Link
Master devices, refer to the
Fieldbus Overview
document.
Interface Configuration Problems
When using the NI-FBUS Interface Configuration utility on a
Windows 2000/NT machine, the error message utility could not
access or locate the registry appears.
•
Make sure you are logged in to Windows 2000/NT with Administrator
privileges.
•
Your registry entries for NI-FBUS may have been deleted or corrupted.
Uninstall, then reinstall the NI-FBUS software as described in the
