User`s manual

6-2 Intellio C218Turbo /PCI User's Manual
Software Causes and Solutions:
a. Intellio C218Turbo 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 Chapter “Connection Options (Opt8x) 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. Under UNIX, “Terminal
emulator” in the MOXA administration utility “mxadm” and “stty”, “cat”, or
“getty” are existed programs for testing tty port.