Moxa Technologies NPort 5100 Series User manual

Moxa Tech Note Real TTY Driver for NPort
Copyright © 2008 Moxa Inc Released on July 17, 2008
About Moxa
Moxa manufactures one of the world’s leading brands of device networking solutions. Products include serial
boards, USB-to-serial hubs, media converters, device servers, embedded computers, Ethernet I/O servers,
terminal servers, Modbus gateways, industrial switches, and Ethernet-to-fiber converters. Our products are key
components of many networking applications, including industrial automation, manufacturing, POS, and medical
treatment facilities.
How to Contact Moxa
Tel: [phone]
Fax: [phone] Web: www.moxa.com Email: [e-mail]
This document was produced by the Moxa Technical Writing Center (TWC). Please send your comments or
suggestions about this or other Moxa documents to [e-mail].
Real TTY Driver for NPort
Moxa Technical Support Team
[email protected]
This Tech Note applies to NPort device servers. The following models are included:
zNPort DE-211
zNPort DE-311
zNPort DE-311M
zNPort 5100 series
zNPort 5200 series
zNPort 5400 series
zNPort 5600 series
zNPort IA5150
zNPort IA5250
zNPort 6000 series
zNPort W2150
zNPort W2150 Plus
zNPort W2250
zNPort W2250 Plus
What is the Real TTY driver for the NPort?
The Real TTY driver for the NPort allows a Linux PC to treat NPort serial ports as
local TTY ports. Similar to the Fixed TTY driver for UNIX PCs, a transparent data
tunnel is established to the NPort's serial port. However, the Real TTY driver also
supports IO control of the TTY port, such as setting the baudrate, pulling RTS/DTR
high, and checking line status for CTS, DSR, and DCD signals.
PC with TTY
(termio) program
Ethernet
NPort
Serial
Device

Moxa Tech Note Real TTY Driver for NPort
Copyright © 2008 Moxa Inc. Page 2 of 3
Installing the Real TTY driver
Before performing the following steps, restore the NPort's default settings by
holding the reset button down for 10 seconds.
1. Turn the NPort on. The Ready LED should turn green.
2. Make sure that the NPort and the host PC are properly connected to the
network.
3. Modify the NPort's IP address and other IP parameters so that it is in the
same network as your PC. You may also need to modify the host PC's IP
configuration. Make sure you can ping the NPort from your host PC.
Remember, the IP addresses of the NPort and the PC must be on the same
subnet. If one IP address is modified, you may need to modify the other IP
address.
4. Configure the NPort to Real COM mode. Please refer to instructions in the
NPort's Quick Installation Guide or User's Manual.
5. Log into Linux as a super user (root).
6. Execute "cd /tmp" to change to the root directory.
7. Copy the driver file "npreal2xx.tgz" to the " /tmp" directory.
8. Execute "tar xvfz npreal2xx.tgz" to copy all files into the system.
9. Execute "/tmp/moxa/mxinst". For Red Hat AS/ES/WS and Fedora Core1,
add an extra argument as follows: "/tmp/moxa/mxinst SP1"
10. Change to the "/usr/lib/npreal2/driver" directory.
11. Execute "mxaddsvr" to map TTY ports to NPort serial ports, as follows:
/mxaddsvr [NPort IP address] [total ports] ([data port] [command port])
For example:
# cd /usr/lib/npreal2/driver
# ./mxaddsvr 192.168.127.254 16
In this example, 16 TTY ports, /dev/ttyr00 through /dev/ttyr15, will be
created. All TTY ports are mapped to the NPort at 192.168.127.254. The
TCP data ports are designated from 950 to 965, and the command ports are
designated from 966 to 981.
Testing Real TTY ports
1. After installing the Real TTY driver as shown above, enter the following
command to check if a TTY port is available:
# sty –a < /dev/ttyp1
2. If the system responds with some serial parameter(s), the TTY port is
available and can be accessed by other programs.

Moxa Tech Note Real TTY Driver for NPort
Copyright © 2008 Moxa Inc. Page 3 of 3
Cable Wiring