Moxa Technologies NPort 5100 Series Manual de usuario

Moxa Tech Note

Real TTY Driver for NPort

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.

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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

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

Cable Wiring

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