Appendix A
Troubleshooting
NI CVS-1450 Series User Manual
A-4
ni.com
•
Watchdog timer expired while configured for the system shutdown
option
–
Determine if the interval between watchdog timer resets is
insufficient for the processing time. Check the software to
determine if it could monopolize the processor.
•
Processor overheat
–
Make sure you are operating the NI CVS-1450 device in
compliance with the temperature specifications in
Getting Started
with the NI CVS-1450 Series Compact Vision System
.
Refer to Table 3-4,
Configuration Settings and Effects
, for more
information about fault conditions.
Cannot Drive Isolated Outputs
Verify that you have power connected to V
iso
and C
iso
inputs on the
NI CVS-1450 device power connector and that the contact at the screw
terminals is solid. Because these outputs are electrically isolated from
the NI CVS-1450 device main supply, they require power in addition to
the NI CVS-1450 device main supply.
Runaway Startup Application
If a runaway startup application causes the NI CVS-1450 device to become
unresponsive, power off the NI CVS-1450 device and then restart it with
either the
NO APP
switch or the
SAFE MODE
switch in the
ON
position.
Restarting the NI CVS-1450 device with the
NO APP
switch enabled
prevents any VIs from running at startup. Restarting with the
SAFE
MODE
switch enabled starts the NI CVS-1450 device in safe mode and
does not launch the embedded LabVIEW RT engine. Refer to the
LEDs, DIP Switches, and Connectors
, for
more information about these DIP switches.
System Displays a Missing Operating System Error at Startup
The NI CVS-1450 device was powered on or reset with all DIP switches
in the
ON
position. Set the DIP switches to the off position, and reset the
NI CVS-1450 device by pressing the
RESET
button for at least two
seconds.
