User`s manual

6-2 Intellio C320Turbo/PCI User's Manual
or box or board to verify. In addition, PComm utility “Diagnostic” for
Windows NT and Windows 95/98 is good for testing MOXA board and port
condition. If the report of diagnostic shows error, replace the error
component.
Software Causes and Solutions:
a. Intellio C320Turbo Series 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 the “Connection Options 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 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.
Under UNIX, “Terminal emulator” in the MOXA administration utility
“mxadm” and “stty”, “cat”, or “getty” are existed programs for testing tty
port.
3. “CPU/Basic Module not found” message appears. Or CPU/Basic Module
can not download firmware from the Control Board.
Hardware Causes and Solutions:
a. Switch off the CPU/Basic Module. Check that the connection cable between
the CPU/Basic Module and the Control Board is correct and firmly
connected on both sides. Switch on the CPU/Basic Module, then power on
the Control Board system to wait until the LED display of CPU/Basic
Module reads “Ld”.
b. Sometimes it happens when the total consumption of power in the system is
higher than the power adapter can provide. Especially when many interface
boards including MOXA board(s) are plugged in the system. It is
recommended to replace the current power adapter with higher watt one. Or
choose the external power option if Intellio C320Turbo/PCI is used.
c. If all the possible methods fail, the CPU/Basic Modules might be defective.
Please check the module(s) one at a time in the system to find out the defective one.