User`s manual

Chapter 6 l l Troubleshooting
36
Software Causes and Solutions:
a. Smartio C104 PCI Series checks the line status (CTS) before it sends data out if
the RTS/CTS flow control feature is set to “Enable” in the configuration or
application program. Please refer to the “Connection Cable and Cable Wiring”
chapter for proper wiring. Check the line status of the suspected port using the
diagnostic LED indicators on the mini tester.
b. Perhaps the application controlling the board is not correctly written according to
the corresponding API of the operating system. To verify, please run an existing
and known good application or the provided utilities by Moxa. For example,
under Windows NT and Windows 95/98, Pcomm “Terminal emulator” or
“HyperTerminal” utilities are good for testing the COM ports.
6.2 Windows NT
This section is specific for troubleshooting under Windows NT. For general problems
and solutions, please see the previous section, “General Troubleshooting”.
1. After the system reboots, the error message “Another driver in the system,
which did not report its resources, has already claimed the interrupt used by
xxx.” appears in the Event Log.
This indicates that the MOXA board is found, but the IRQ is conflicting with another
adapter. Please make sure there is no conflict with other adapter’s IRQ. Check the PCI
BIOS IRQ settings first. Make sure that an IRQ is available.
2. After the system reboots, the error message “Cannot find any configured
MOXA Smartio/Industio PCI Series board!” appears in the Event Log.
Please make sure the PCI board is seated firmly in the expansion slot.
3. The COM number of the Smartio C104 PCI Series, with device number xx,
conflicts with others.
The COM numbers of different boards happen to be the same. Try to change the COM
number mappings.
4. Windows NT system panic (blue screen).