Moxa Technologies C168HS user manual Moxa TTY Device Naming Convention

Software Installation

MOXA TTY Device Naming Convention

If the Smartio C168 Series is successfully configured, there will be two tty devices created for each port at /dev directory: one is non-MODEM tty (e.g. ttye11), and the other is MODEM tty (e.g. ttyE11). 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{e-f}{1}{1-8}, where:

"tty" + "A" + "B" + "C"

Port ordinal number, 1-8 Always 1

Board ordinal number

"e" or "E": 1st MOXA board

"f" or "F": 2nd MOXA board Capitals indicate a MODEM port

Standard tty device prefix

For example:

/dev/ttye11

/dev/ttye12

/dev/ttye13

/dev/ttye14

/dev/ttye15

/dev/ttye16

/dev/ttye17

/dev/ttye18

Opt8A

Smartio C168H/HS User’s Manual 3-27