User`s manual

3-20 Intellio C320Turbo User's Manual
MOXA TTY Device Naming Convention
If the Intellio C320Turbo is successfully configured, there will be two tty devices
created for each port at /dev directory: one is non-MODEM tty (e.g. ttya11), and the
other is MODEM tty (e.g. ttyA11). The two devices are actually accessing the same
port except that the MODEM tty has to check the ON status of DCD signal to be able
to open device, and closing device automatically as DCD signal is OFF.
The convention of the MOXA tty device name is /dev/tty{a-d}{1}{1-8}, where:
"tty" + "A" + "B" + "C"
Port ordinal number in a UART Module/8-port
unit,1-8
UART Module/8-port unit ordinal number,1-4
Board ordinal number
"a"or "A": 1st MOXA board
"b"or "B": 2nd MOXA board
"c"or "C": 3rd MOXA board
"d"or "D": 4th MOXA board
Capitals indicate a MODEM port
Standard tty device prefix