User`s manual

Software Installation
Intellio C218Turbo /PCI User's Manual 3-27
MOXA TTY Device Naming Convention
If the Intellio C218Turbo/PCI 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 physical 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
Always 1
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
For example:
/dev/ttya11
/dev/ttya12
/dev/ttya13
/dev/ttya14
/dev/ttya15
/dev/ttya16
/dev/ttya17
/dev/ttya18
Opt8A