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National Instruments Corporation C-1 Getting Started with CAN for Windows NT
C

Troubleshooting and

Common Questions

This appendix describes how to troubleshoot problems and answers some
common questions.

Missing CAN Interface in the NI-CAN Configuration

Utility

The NI-CAN Configuration utility contains configuration information for
all of the CAN hardware it is aware of that is installed in your system. To
start the NI-CAN Configuration utility, double-click on the NI-CAN
Configuration icon in the Control Panel:
• Windows NT 3.51: Open the Control Panel in the Main group of
theProgram Manager.
• Windows NT 4.0 or later: Select Start»Settings»Control Panel.
If the CAN interface you are looking for is not listed under NI-CAN
Configuration, the CAN interface is not properly installed. For National
Instruments CAN hardware, this means that the interface is not physically
present in the system. If the interface is firmly plugged into its slot and the
problem persists, contact National Instruments.

Troubleshooting Diagnostic Utility Failures

The following sections explain common error messages generated by the
NI-CAN Diagnostic utility.
Resource Errors
This error occurs if the memory resource or interrupt resource assigned to
a CAN interface conflicts with the resources being used by other devices
inthe syst em. If a resource error occurs, click on the Resources butt o n
inth e NI-CAN C onfiguration utility to view the board resources. For the
PCMCIA-CAN, change the conflicting resource shown in Resources until