User`s manual

6-2 Intellio CP-204J User’s Manual
Software Causes and Solutions:
a. Intellio CP-204J will check line status (CTS) before it sends data out if
RTS/CTS flow control feature is set to “Enable” in configuration or
application program. Please see Chapter “Connection Cable and Cable
Wiring” 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 existing and known good application or Moxa provided utility. For
example, under Windows NT and Windows 95/98,
PComm Utility “Terminal
emulator” or “Hyperterminal” is good for testing COM ports.
Windows NT
This section is specific for troubleshooting under Windows NT. For general
problems and solutions, please see previous section “General Troubleshooting”.
1. After system reboot, error message “MOXA CP-204J Multiport Board #1
addr(xxxxxxxx): IRQ test failure!” appears in Event Log.
This indicates MOXA board is found but the IRQ is conflicting with other
adapter. Please make sure there is no conflict with other adapter’s IRQ. Check
the PCI BIOS IRQ setting first. Make sure the IRQ is available.
2. Windows NT system panic (blue screen).
The possible reason is that IRQ conflict with other ISA Bus adapters like LAN
and SCSI board or system BIOS. Refer to problem 1 for solution.
Windows 95/98
This section is specific for troubleshooting under Windows 95/98. For general
problems and solutions, please see previous section “General Troubleshooting”.
1. Error Message “CP-204J (BusNo=xx, DevNo=xx) at base memory [xxxxxxxx]
interrupt failure!” appears.