National Instruments NI-CAN User Manual page 64

Appendix B Windows 98/95: Troubleshooting and Common Questions
Missing CAN Interface
Problem Shown in Device Manager
NI-CAN User Manual
National Instruments CAN interfaces have been removed from Other
Devices, click the Refresh button. At this point, the system rescans the
installed hardware, and the CAN interface should show up under National
Instruments CAN Interfaces without any problems. If the problem
persists, contact National Instruments.
If the National Instruments CAN Interfaces item exists, but the CAN
interface you are looking for is not listed there, the CAN interface is not
properly installed. For National Instruments CAN hardware, this problem
indicates that the interface is not physically present in the system.
If a CAN interface is not working properly, its icon has a circled X or
exclamation mark (!) overlaid on it, as shown in Figure B-1.
Figure B-1. CAN Interface That Is Not Working Properly
This problem can occur for several reasons. If you encounter this problem,
the Device Manager should list an error code that indicates why the
problem occurred. To see the error code for a particular interface, select the
name of the interface and click on the Properties button to go to the
General tab for that CAN interface. The Device Status section of the
General tab shows the error code. Locate the error code in the following
list to find out why your CAN interface is not working properly:
• Code 8—The NI-CAN software was incompletely installed. To solve
this problem, reinstall the NI-CAN software.
• Code 9—Windows 98/95 had a problem reading information from the
CAN interface. Contact National Instruments for assistance.
• Code 12—The CAN interface was not assigned a physical memory
range. If your computer does not have 8 KB of available memory,
Windows 98/95 might configure your CAN interface without a
physical memory assignment. The NI-CAN software cannot function
without 8 KB of physical memory. Another way to verify this problem
B-2 ni.com