Moxa W2250PLUS User Manual

NPort W2250/2150 Plus User’s Manual

First Edition, March 2007

www.moxa.com/product

Moxa Technologies Co., Ltd.

Tel: +886-2-8919-1230 Fax: +886-2-8919-1231

Web:

MOXA Technical Support

Worldwide: The Americas

www.moxa.com

support@moxa.com support@usa.moxa.com

NPort W2250/2150 Plus User’s Manual

The software described in this manual is furnished under a license agreement and may be used only in

accordance with the terms of that agreement.

Reproduction without permi ssi on is pr ohibited.

Trademarks

MOXA is a registered trademark of The Moxa Group.

All other trademarks or registered marks in this manual belong to their respective manufacturers.

Disclaimer

Information in this document is subject to change without notice and does not represent a commitment on the part of Moxa.

Moxa provides this document “as is,” without warranty of any kind, either expressed or implied, including, but not limited to, its particular purpose. Moxa reserves the right to make improvements and/or changes to this manual, or to the products and/or the programs described in this manual, at any time.

Information provided in this manual is intended to be accurate and reliable. However, Moxa Technologies assumes no responsibility for its use, or for any infringements on the rights of third parties that may result from its use.

This product might include unintentional technical or typographical errors. Changes are periodically made to the information herein to correct such errors, and these changes are incorporated into new editions of the publication.

Table of Contents

Chapter 1 Introduction..................................................................................................1-1

Overview.................................................................................................................................. 1-2

Package Checklist.................................................................................................................... 1-2

Product Features ...................................................................................................................... 1-3

Product Specifications ............................................................................................................. 1-3

Serial Port Pin Assignments..................................................................................................... 1-4

Chapter 2 Getting Started.............................................................................................2-1

Panel Layout............................................................................................................................2-2

Connecting the Hardware ........................................................................................................ 2-3

Wiring Requirements.................................................................................................... 2-3

Connecting to the Network........................................................................................... 2-3

Connecting the Power................................................................................................... 2-4

Connecting to a Serial Device ...................................................................................... 2-4

LED Indicators ............................................................................................................. 2-4

Chapter 3 Initial IP Configuration.................................................................................3-1

Installation Procedure for First-time Users.............................................................................. 3-2

Factory Default IP Address...................................................................................................... 3-2

ARP.......................................................................................................................................... 3-2

Telnet Console ......................................................................................................................... 3-3

Serial Console (19200, n, 8, 1)................................................................................................. 3-6

Chapter 4 Choosing the Proper Operation Mode .......................................................4-1

Overview.................................................................................................................................. 4-2

TCP Server Mode....................................................................................................................4-2

TCP Client Mode..................................................................................................................... 4-3

UDP Mode............................................................................................................................... 4-3

Real COM Mode...................................................................................................................... 4-4

Pair Connection Mode.............................................................................................................4-5

Ethernet Modem Mode............................................................................................................4-5

T erminal Applications.............................................................................................................. 4-6

Terminal ASCII Mode.................................................................................................. 4-6

Terminal BIN Mode ..................................................................................................... 4-6

SSH Mode .................................................................................................................... 4-6

Reverse T erm inal Appli cations................................................................................................4-7

Reverse Telnet.............................................................................................................. 4-7

Reverse SSH................................................................................................................. 4-7

Chapter 5 Web Console Configuration........................................................................5-1

Configuring Your Browser....................................................................................................... 5-2

Basic Settings........................................................................................................................... 5-3

Time Settings................................................................................................................ 5-3

Web/Telnet Console.....................................................................................................5-4

Network Settings...................................................................................................................... 5-5

General Settings............................................................................................................ 5-5

Ethernet Configuration................................................................................................. 5-6

WLAN Configuration................................................................................................... 5-7

Serial Port Settings................................................................................................................. 5-10

Operation Modes ........................................................................................................ 5-10

Communication Parameters........................................................................................ 5-21

System Management.............................................................................................................. 5-22

Accessible IP Settings................................................................................................. 5-22

SNMP Agent .............................................................................................................. 5-23

Auto Warning Settings ............................................................................................... 5-24

System Status.............................................................................................................. 5-27

Change Password................................................................................................................... 5-28

Load Factory Default............................................................................................................. 5-29

Save/Restart...........................................................................................................................5-29

Chapter 6 Installing and Configuring the Software....................................................6-1

Overview.................................................................................................................................. 6-2

Installing NPort COM Driver .................................................................................................. 6-2

Installing NPort Search Utility................................................................................................. 6-5

Configuring NPort COM Driver.............................................................................................. 6-8

Configuring NPort Search Utility..........................................................................................6-13

Linux Real TTY and UNIX Fixed TTY Installation.............................................................. 6-14

Installing the Linux Real TTY driver.........................................................................6-14

Installing the UNIX Fixed TTY Driver...................................................................... 6-17

Upgrading the Firmware........................................................................................................ 6-18

Appendix A SNMP Agents with MIB II & RS-232 Like Groups.....................................A-1

Appendix B Well Known Port Numbers.........................................................................B-1

Appendix C Federal Communication Commission Interference Statement............... C-1

Appendix D FCC Warning Statement.............................................................................D-1

Appendix E Service Information..................................................................................... E-1

MOXA Interne t Services..........................................................................................................E-2

Problem Report Form ..............................................................................................................E-3

Product Return Procedure........................................................................................................E-4

Chapter 1 Introduction

Moxa’s NPort W2250/2150 Series of wirele s s serial devi ce serve rs gi ve you an easy way to connect your RS-232/422/485 serial devices to a WLAN. The 1-port NPort W2150 and 2-port NPort W2250 are ideal for environments where a LAN is not available, or where serial devices are moved frequently.

The following topics are covered in this chapter:

 Overview  Package Checklist  Product Features  Product Specifications  Serial Port Pin Assignments

NPort W2250/2150 Plus User’s Manual Introduction

Overview

Moxa’s NPort W2250/2150 wireless de vi ce serv ers are the ideal choice for connecting your RS-232/422/485 serial devices—such as PLCs, meters, and sensors—to a Wired Ethernet LAN and Wireless LAN. Your communications software will be able to access the serial devices from anywhere over a local LAN, WLAN, or the Internet. Moreover, the WLAN environment offers an excellent solution for applications in which the serial devices are moved frequently from place to place.

NPort W2250/2150 wireless serial device servers support automatic IP con figuration protocols (DHCP, BOOTP) and manual configuration via a handy web browser console. Both IP configuration methods ensure quick and effective installation, and the NPort Windows Driver Manager Utility makes Port Mapping very convenient to configure.

An external antenna increases the range of the wireless connection. Users can position the adjustable antenna for maximum signal strength or even replace the antenna with their own for additional flexibility and scalability. This feature is particularly useful when a serial device is connected in a high interference area. As an added feature, a signal strength indicator is located on the front panel to make it easier to troubleshoot connection problems.

NPort W2250/2150 wireless serial device servers ensure the compatibility of network software that uses a standard network API by providing TCP Server Mode, TCP Client Mode, and UDP Mode. The Real COM/TTY drivers allow software that works with COM/TTY ports to be set up to work over a TCP/IP network in no time. This excellent feature preserves your software investment and lets you enjoy the benefits of networking your serial devices instantly.

To make your management task easier, the NPort W2250/2150 Series provides additional features, such as password authentication, IP filter, WEP support for 64-bit and 128-bit encryption, and SNMP support.

Package Checklist

NPort W2250/2150 is shipped with the following items: Standard Accessories

y NPort W2250 or NPort W2150 x 1 y Documentation & Software CD y RJ45 to RJ45 Ethernet cross-over cable y RJ45 to male DB9 cable (CBL-RJ45M9-150) y Power adaptor y Warranty Booklet y Quick Installation Guide

Optional Accessories

y DK-35A DIN-Rail Mounting Kit (35 mm) y CBL-RJ45M9-150 (8-pin RJ45 to male DB9 cable; 150 cm) y CBL-RJ45F9-150 (8-pin RJ45 to female DB9 cable; 150 cm) y CBL-RJ45M25-150 (8-pin RJ45 to male DB9 cable; 150 cm) y CBL-RJ45F25-150 (8-pin RJ45 to male DB9 cable; 150 cm)

NOTE: Notify your sales representative if any of the above items is missing or damaged.

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NPort W2250/2150 Plus User’s Manual Introduction

Product Features

y Link any serial device to IEEE 802.11 a/b/g network y 2/1-port RS-232/422/485, up to 921.6 Kbps y Web-based configuration with built-in Ethernet or WLAN y Enhanced remote configuration with HTTPS, SSH y Secure data access with WEP, WPA, WPA2 y Built-in useful WLAN Site Survey Tool y Supports powerful wireless roaming when wireless signal strength is below user-defined

roaming threshold

y Per-port off-line port buffering and serial data log y Dual power inputs (1 power jack, 1 te rminal block)

Product Specifications

WLAN

Standard Compliance 802.11 a/b/g Radio Frequency Type DSSS Tx Power 17 dBm

15 dBm (

14 dBm ( Rx Sensitivity -80 dBm Transmission Rate 54 Mbps for 802.11a

11 Mbps for 802.11b

54 Mbps for 802.11g

54 Mbps (max.) with auto fallback

(54, 48, 36, 24, 18, 12, 11, 9, 6, 5.5, 2, 1 Mbps) Transmission distance Up to 100 meters (in open areas) Antenna Connector Reverse SMA Network Mode Infrastructure mode, Ad-Hoc mode Wireless Security

WEP: WPA, WPA2, 802.11i: Encryption:

802.11i EAP authentication:

LAN Ethernet 10/100 Mbps (RJ45) Protection Built-in 1.5 KV magnetic isolation

Serial No. of ports W2250 Plus and W2250 Plus-S: 2 ports

Interface RS-232/422/485 Port Type DB9

64-bit/128-bit data encryption

Enterprise mode and Pre-Share Key (PSK) mode

128-bit TKIP/CCMP

PEAP, EAP-TLS, EAP-TTLS, PEAP/MSCHAPv2, PEAP/TLS,

PEAP/GTC, ,PEAP/MD5, AP-TTLS/EAP-MD5,

EAP-TTLS/EAP-GTC, EAP-TTLS,

EAP-TTLS/EAP-MSCHAPv2, EAP-TTLS/EAP-TLS,

EAP-TTLS/MSCHAPv2, EAP-TTLS/MSCHAP

W2150 Plus and W2150 Plus-S: 1 port

(Average) for Tx Power 11b

Average) for Tx Power 11g Average) for Tx Power 11a

1-3

NPort W2250/2150 Plus User’s Manual Introduction

Serial Data Log W2150 Plus and W2250 Plus: 64 KB

W2150 Plus-S and W2250 Plus-S: 2 MB

Off-Line Port Buffering W2150 Plus and W2250 Plus: 64 KB

Serial Communication Parameters Parity None, Even, Odd, Space, Mark Data Bits 5, 6, 7, 8 Stop Bits 1, 1.5, 2 Flow Control RTS/CTS, XON/XOFF, DTR/DSR Transmission Speed 50 bps to 921.6 Kbps

Software Features Protocols ICMP, IP, TCP, UDP, DHCP, BOOTP, Telnet, SNMP, HTTP,

Utilities Windows utility for Windows 98/ME/2000/XP/2003 Configuration Web browser, serial/telnet console, or Windows utility

Power Requirements

Power Input 12-48 VDC Power Consumption 560 mA Power Connector Power jack or terminal block

Mechanical Specifications

Material Aluminum sheet metal (1 mm)

Environmental

Operating Temperature 0 to 55°C (32 to 131°F), 5 to 95%RH Storage Temperature -20 to 85°C (-4 to 185°F), 5 to 95%RH

Regulatory Approvals

EMC FCC Class A, CE Class A Safety UL, CUL, TÜV

W2150 Plus-S and W2250 Plus-S: 22 MB

SMTP

Serial Port Pin Assignments

8-pin RJ45 Port

Pin RS-232 RS-422

1 8

1 DSR --- --- --2 RTS TxD+ TxD+ --3 GND GND GND GND 4 TxD TxD- TxD- --5 RxD RxD+ RxD+ Data+ 6 DCD RxD- RxD- Data7 CTS --- --- --8 DTR --- --- ---

RS-232/422/485 Pinouts

RS-485

(4-wire)

RS-485

(2-wire)

1-4

Chapter 2 Getting Started

This chapter includes information about installing NPort W2250/2150. The following topics are covered in this chapter:

 Panel Layout  Connecting the Hardware

¾ Wiring Requirements ¾ Connecting to the Network ¾ Connecting the Power ¾ Connecting to a Serial Device ¾ LED Indicators

NPort W2250/2150 Plus User’s Manual Getting Started

Panel Layout

NPort W2250 Plus NPort W2150 Plus

Power jack power input

Terminal Block power input

DIN-Rail screw hole

100M LED (green)

RJ45 10/100 Mbps Ethernet port

Signal Strength LEDs

10M LED (orange)

Reset button

Antenna

Wallmount screw hole

RJ45 (8-pin) serial ports

2-2

NPort W2250/2150 Plus User’s Manual Getting Started

Connecting the Hardware

This section describes how to connect NPort W2250/2150 to serial devices for first time testing purposes. We cover Wiring Requirements, Connecting the Power, Connecting to the Network, Connecting to a Serial Device, and LED Indicators.

Wiring Requirements

ATTENTION

Safety First!

Be sure to disconnect the power cord before installing and /or wiring your device. Wiring Caution! Calculate the maximum possible current in each power wire and common wire. Observe all

electrical codes dictating the maximum current allowable for each wire size. If the current goes above the maximum ratings, the wiring could overheat, causing serious

damage to your equipment.

Temperature Caution!

Be careful when handling the device. When plugged in, the device’s internal components generate heat, and consequently the casing may feel hot to the touch.

You should also pay attention to the following items: y Use separate paths to route wiring for power and devices. If power wiring and device wiring

paths must cross, make sure the wires are perpendicular at the intersection point.

NOTE: Do not run signal or communication wiring and power wiring in the same wire conduit. To avoid interference, wires with different signal characteristics should be routed separately.

y Use the type of signal transmitted through a wire to determine which wires should be kept

separate. The rule of thumb is that wiring that shares similar electrical characteristics can be bundled together.

y Keep input wiring and output wirin g separate. y Where necessary, it is advisable to label the wiring to all devices in the system.

Connecting to the Network

Connect one end of the Ethernet cable to NPort W2250/2150’ s 10/100M Ethernet port and the other end of the cable to the Ethernet network. If the cable is properly connected, NPort W2250/2150 will indicate a valid connection to the Ethernet in the following ways:

y The Ethernet LED maintains a solid green color when connected to a 100 Mbps Ethernet

network.

y The Ethernet LED maintains a solid orange color when connected to a 10 Mbps Ethernet

network.

y The Ethernet LED will flash when Ethernet packets are being transmitted or received.

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NPort W2250/2150 Plus User’s Manual Getting Started

Connecting the Power

Connect the 12-48 VDC power line with NPort W2250/2150’s power jack. When the power is properly supplied, the “Ready” LED will show a solid red color until the system is ready, at which time the “Ready” LED will change to a green color.

Connecting to a Serial Device

Connect the serial data cable between NPort W2250/2150 and the serial device. Serial data cables are optional accessories for NPort W2250/2150. Refer to Chapter 1 under Optional Accessories in the Ordering Information section for information about the RJ45-to-DB25 and RJ45-to-DB9 cables.

LED Indicators

Top Panel LED Indicators

Name Color Function

Steady on: Power is on and NPort is booting up.

Ready

WLAN

Serial 1 Serial 2

Signal

Strength

(5 LEDS)

red

green

off Power is off, or a power error condition exists.

green

orange Serial port is receiving data.

green Serial port is transmitting data.

off No data is being transmitted or received through the serial port.

green

Blinking: Indicates a LAN IP conflict, or that the DHCP or

BOOTP server did not respond properly. Steady on: Power is on and NPort is functioning normally. Blinking: The device server has been located by the NPort

Search Utility.

Steady on: Wireless enabled. Blinking: Indicates a WLAN IP conflict, or that the DHCP or

BOOTP server did not respond properly.

The number of lit LEDS indicates the WLAN signal strength. When [ 0 / 1 / 2 / 3 / 4 / 5 ] LEDs are lit, the corresponding WLAN status is [ Connection Fail / Bad / Fair / Good / Very Good / Excellent ].

End Panel LED Indicators

Name Color Function

orange 10 Mbps Ethernet connection.

Ethernet

green 100 Mbps Ethernet connection.

off Ethernet cable is disconnected, or has a short.

2-4

Chapter 3 Initial IP Configuration

When setting up your NPort W2250/2150 for the first time, the first thing you should do is configure the IP address. Select one of the initial IP Address configuration methods to configure NPort W2250/2150’s IP Address. For more details about network settings, see the Network Settings section from Chapter 5, Web Console Configuration.

This chapter covers the following topics:

 Installation Procedure for First-time Users  Factory Default IP Address  ARP  Telnet Console  Serial Console (19200, n, 8, 1)

NPort W2250/2150 Plus User’s Manual Initial IP Configuration

Installation Procedure for First-time Users

STEP 1: After removing NPort from the box, use a cross-over Ethernet cable to connect directly

to your computer’s Ethernet port. STEP 2: Attach the power adaptor to the NPort and then plug the adaptor into an electrical outlet. STEP 3: Use the Web console to configure the NPort W2250/2150 via the Ethe rnet po rt .

NOTE

Web Console We recommend that you use the web console to configure NPort W2250/2150. See Chapter 5 for instructions on how to use the web console.

Network Interface Only one Network Interface can be used at the same time. If the Ethernet Link is active, then the WLAN will be disabled. If the WLAN is active, then the Ethernet Link will be disabled.

Connect First! You must connect the Ethernet cable first before powering up your NPort.

Factory Default IP Address

NPort W2250/2150 is configured with the following default IP addresses: LAN: Setting static IP

IP Address 192.168.126.254 Netmask 255.255.255.0

Æ If the Ethernet port is unable to get an IP address from the DHCP server, then the IP address/netmask will revert to 192.168.126.254/255.255.255.0.

WLAN: Setting static IP

IP Address 192.168.127.254 Netmask 255.255.255.0

NOTE

ARP

Æ If the WLAN port is unable to get an IP address from the DHCP server, then the IP address/netmask will revert to 192.168.127.254/255.255.255.0

If you forget the IP address, you can use the NPort Search utility (from your PC) to locate the NPort W2250/2150 unit over the network. You will be able to view the IP address on the screen.

The ARP (Address Resolution Protocol) command can be used to set up an IP address for your NPort W2250/2150. The ARP command tells your computer to associate the NPort W2250 /2150’s MAC address with the intended IP address. You must then use Telnet to access the NPort W2250/2150, at which point the device server’s IP address will be reconfigured.

This function only applies to default IP addresses. Take the following steps to use ARP to configure the IP address:

1. Obtain a valid IP address for your NPort W2250/2150 from your network administrator.

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NPort W2250/2150 Plus User’s Manual Initial IP Configuration

2. Obtain NPort W2250/2150’s MAC address from the label on its bottom panel.

3. Execute the ‘arp -s’ command from your computer’s MS-DOS prompt by typing:

arp –s 192.168.200.100 00-90-E8-xx-xx-xx

This is where 192.168.200.100 is the new IP address and 00-90-E8-xx-xx- xx is the MAC address for your NPort W2250/2150. You will need to change both numbers, as described above in items 1 and 2.

4. Next, execute a special Telnet command by typing: telnet 192.168.200.100 6000 After

issuing this command, a Connect failed message will appear, as shown below. After the NPort W2250/2150 reboots, its IP address should be updated to the new ad dress. You can reconnect using either Telnet, the Web, or Utility to check that the update was successful.

Telnet Console

1. From the Windows desktop, click on Start and then selecte Run

2. Type telnet 192.168.126.254 (default IP address) in the Open text input box, and then click

on OK.

When the Telnet window opens, if you are prompted to input the Console password, input th e password and then press Enter .Note that this page will only appear if the NPor t W2250 is password protected.

---------------------------------Model Name : NPort W2250 Serial No : 00010 Ethernet IP : 192.168.126.254 WLAN IP : 192.168.127.254 WLAN Status : Infrastructure Mode WLAN SSID : default

---------------------------------<< Main Menu >> (1) Basic Settings (2) Network Settings (3) Serial Port Settings (4) System Management (5) Ping (6) Change Password (7) Load Factory Default (8) Save/Restart (v) View Settings (q) Quit

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NPort W2250/2150 Plus User’s Manual Initial IP Configuration

3. Type 2 to select Network settings, and then press Enter.

<< Main Menu >> (1) Basic Settings (2) Network Settings (3) Serial Port Settings (4) System Management (5) Ping (6) Change Password (7) Load Factory Default (8) Save/Restart (v) View Settings (q) Quit

Key in your selection: 2

4. Type 2 to select Ethernet Configuration and then press Enter.

<< Main Menu >> (1) General Settings (2) Ethernet Configuration (3) WLAN Configuration (4) View Settings (5) Back to the Main Menu (6) Quit

Key in your selection: 2

5. Type 2 to select IP Address and then press Enter, then use the Backspace key to erase the

current IP address, type in the new IP address, and then press Enter.

<< Main Menu->Network Settings->Ethernet Configuration >> (1) IP Configuration (2) IP Address (3) Netmask (4) Gateway (v) View Settings (m) Back to Main Menu (q) Quit

Key in your selection: 2 IP Address: 192.168.126.254

3-4

NPort W2250/2150 Plus User’s Manual Initial IP Configuration

6. Type m and then press Enter to return to the main menu.

<< Main Menu->Network Settings->Ethernet Configuration >> (1) IP Configuration (2) IP Address (3) Netmask (4) Gateway (v) View Settings (m) Back to Main Menu (q) Quit

Key in your selection: m

7. Type 8 and then press Enter to Save/Restart the system.

Key in your selection: 8

8. Type y and then press Enter to save the new IP address and restart NPort W2250/W2150.

Ready to restart (y) Yes (n) No

Key in your selection: y

3-5

NPort W2250/2150 Plus User’s Manual Initial IP Configuration

Serial Console (19200, n, 8, 1)

Before configuring the NPort W2250/2150 via the serial console, turn off the power and use a serial cable to connect the NPort W2250/2150 to your computer’s serial port.

We suggest using MOXA PComm Terminal Emulator, which can be downloaded free of charge

www.moxa.com, to carry out the configuration procedure.

from

1. Connect NPort W2250/2150’s serial port 1 directly to your computer’s male RS-232 serial

port.

2. From the Windows desktop, click on Start Æ Programs Æ PComm Lite Æ Terminal

Emulator.

3. When the PComm Terminal Emulator window opens, first click on the Port Manager

menu item and select Open, or click on the Open icon.

4. The Property window opens automatically. From the Communication Parameter page,

select the appropriate COM port for the connection, COM1 in this example, and 19200 for Baud Rate, 8 for Data Bits, None for Parity, and 1 for Stop Bits.

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NPort W2250/2150 Plus User’s Manual Initial IP Configuration

5. From the Property window’s Terminal page, select ANSI or VT100 for Terminal Type,

and click on OK. If you select Dumb Terminal as the terminal type, some of the console functions—especially the “Monitor” function—may not work properly.

6. Press the “`” key (located in the upper left corner of the keyboard) continuously while

powering on the NPort W2250/2150.

7. Sending a continuous “`” string to NPort W2250/W2150 triggers it to switch automatically

from data mode to console mode.

8. Input the password when prompted. Note that this page will only app ear when the NPort

W2250/2150 has been set up for password prot ect i o n.

9. Start by configuring the IP address under Network Settings. Refer to the Telnet Console

section for instructions on how to configure the rest of the IP settings.

3-7

Chapter 4 Choosing the Proper Operation Mode

In this chapter, we describe the various NPort W2250/2150 operation modes. The options include an operation mode that uses a driver installed on the host computer, and operation modes that rely on TCP/IP socket programming concepts. After choosing the proper operation mode in this chapter, refer to Chapter 5 for detailed configuration parameter definitions.

This chapter covers the following topics:

 Overview  TCP Server Mode  TCP Client Mode  UDP Mode  Real COM Mode  Pair Connection Mode  Ethernet Modem Mode  Terminal Mode  Reverse Terminal Mode

NPort W2250/2150 Plus User’s Manual Choosing the Proper Operation Mode

Overview

NPort W2250/2150 wireless Serial Device Servers are used to network-enable traditional RS-232/422/485 devices. A Serial Device Server is a tiny computer equipped with a CPU, real-time OS, and TCP/IP protocols that can bi-directionally translate data between the serial and Ethernet formats. The Serial Device Server lets you use a computer to access, manage, and configure remote facilities and equipment over the Internet from anywhere in the world.

Traditional SCADA and data collection systems rely on serial ports (RS-232/422/485) to collect data from different types of instruments. Since NPort W2250/2150 wireless Serial Device Servers network-enable instruments equipped with an RS-232/422/485 communication port, your SCADA and data collection system will be able to access all instruments connected to a standard TCP/IP network, regardless of whether the devices are used locally or at a remote site.

In addition to providing socket access, NPort W2250/2150 also comes with a Real COM/TTY driver that transmits all serial signals intact. This means that you can continue using existing COM/TTY-based software, eliminating the need to invest in additional, costly software.

Three different Socket Modes are available: TCP Server, TCP Client, and UDP Server/Client. The main difference between the TCP and UDP protocols is that TCP guarantees delivery of data by requiring the recipient to send an acknowledgement to the sender. UDP does not require this type of verification, making it possible to offer speedier delivery. UDP lets you unicast to one IP address, or multicast to groups of IP addresses.

TCP Server Mode

In TCP Server mode, NPort W2250/2150 is configured with a unique IP:Port address on a TCP/IP network. NPort W2250/2150 waits passively to be contacted by the host computer, allowing the host computer to establish a connection with and get data from the serial device. This operation mode also supports up to 4 simultaneous connections, so that multiple hosts can collect data from the same serial device—at the same time.

As illustrated in the figure, data transmission proceeds as follows:

1. The host requests a connection from

the NPort W2250/2150 configured for TCP Server Mode.

2. Once the connection is established,

data can be transmitted in both directions—from the host to the NPort W2250/2150, and from the NPort W2250/2150 to the host.

TCP Server Mode

Request a

connection

Proceed with data transmission

Serial Device

NPort W2250

Serial Signal

TCP/IP

WLAN

Ethernet

Reset

Antenna

12-48 VDC

Ready

WLAN Serial 1 Serial 2

W2250

rial Device Server

Wireless Se

Port 1

Port 2

RS-232/422-485

RS-232/422/485

4-2

NPort W2250/2150 Plus User’s Manual Choosing the Proper Operation Mode

TCP Client Mode

In TCP Client mode, NPort W2250/2150 can actively establish a TCP connection to a pre-defined host computer when serial data arrives.

After the data has been transferred, NPort W2250/2150 can disconnect automatically from the host computer by using the TCP alive check time or Inactivity time settings. Refer to Chapter 5 for more details

As illustrated in the figure, data transmission proceeds as follows:

1. The NPort W2250/2150 requests a connection to the host.

2. Once the connection is established, data can be transmitted in both directions—from the

UDP Mode

Compared to TCP communication, UDP is faster and more efficient. In UDP mode, you can unicast or multicast data from the serial device to one or more host computers. The serial device can also receive data from multiple host computers, making this mode ideal for message display applications.

TCP Client Mode

TCP/IP

WLAN

NPort W2250

Request a

connection

Proceed with

data transmission

Serial Device

Serial Signal

host to the NPort W2250/2150, and from the NPort W2250/2150 to the host.

UDP Mode

TCP/IP

WLAN

Proceed directly with data transmission (connection request not required)

Serial Device

Serial Signal

NPort W2250

12-48 VDC

RS-232/422/485

Ethernet

Ready

WLAN Serial 1 Serial 2

Wireless Se

Port 1

Ethernet

Ready

WLAN Serial 1 Serial 2

Wireless Serial Device Server

Port 1

Reset

rial Device Server

RS-232/422-485

Reset

RS-232/422-485

Antenna

W2250

Port 2

Antenna

W2250

Port 2

4-3

NPort W2250/2150 Plus User’s Manual Choosing the Proper Operation Mode

Real COM Mode

NPort W2250/2150 comes equipped with COM drivers that work with Windows 95/98/ME/NT/2000/XP

Real COM Mode

TCP/IP

WLAN

systems. The driver establishes a transparent connection between host and serial device by mapping the IP of the NPort W2250/2150’s serial port to a local COM port on the host computer.

Proceed directly with data transmission (connection request not required)

Serial Device

Serial Signal

NPort W2250

12-48 VDC

RS-232/422/485

Ethernet

Ready

WLAN Serial 1 Serial 2

Wireless Serial Device Server

Port 1

Reset

RS-232/422-485

Antenna

W2250

Port 2

One of the main conveniences of using Real COM Mode is that Real COM Mode allows users to continue using RS-232/422/485 serial communications software that was written for pure serial communications applications. The driver intercepts data sent to the host’s COM port, packs it into a TCP/IP packet, and then redirects it through the host’s Ethernet card. At the other end of the connection, the NPort W2250/2150 accepts the Ethernet frame, unpacks the TCP/IP packet, and then transparently sends it to the appropriate serial device attached to one of the NPort W2250/2150’s serial ports.

ATTENTION

Real COM Mode allows several hosts to have access control of the same NPort W2250/2150.

The driver that comes with your NPort W2250/2150 controls host access to attached serial devices by checking the host’s IP address. Refer to Accessible IP Settings in Chapter 5 for more details.

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NPort W2250/2150 Plus User’s Manual Choosing the Proper Operation Mode

Pair Connection Mode

In Pair Connection mode, two NPort W2250/2150 Plus servers work together to remove the 15-meter distance limitation imposed by the RS-232 interface. One server is arbitrarily designated the “master” and the other as the “slave”—it does not matter which is which as long as there is one of each. One server is connected from its RS-232 port to the COM port of a PC or another type of computer, such as a hand-held PDA that has a serial port; the other server is connected to the serial device through its RS-232 port.

The two servers are then connected to each other over the network.

Ethernet Modem Mode

Ethernet Modem mode is designed for use with legacy operating systems, such as MS-DOS, that do not support TCP/IP Ethernet. By connecting the properly configured NPort W2250/2150 Plus serial port to the MS-DOS computer’s serial port, it is possible to use legacy software to transmit data over the Ethernet when the software was originally designed to transmit data over a modem.

Pair Connection Mode

Device

RS-232/422/485

TCP/IP

Ethernet

Ethernet Modem Mode

RS-232

NPort 6000 Series “Slave”

NPort 6000 Series “Master”

RS-232/422/485

Device

TCP/IP

Ethernet

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NPort W2250/2150 Plus User’s Manual Choosing the Proper Operation Mode

Terminal Applications

Unix

TerminalTerminal Terminal

Terminal applications involve connecting terminals to UNIX or Windows servers over a network. A terminal connects to the appropriately configured serial port the NPort 6000, and the NPort 6000 transmits information to and from a UNIX or Windows server over the network through its Ethernet port. You may need to check with your network administrator to determine the appropriate terminal mode. All terminal modes support fast keys as used in many terminal applications.

Please refer to Chapter 4, Intr od uci n g Serial Port Operation Modes, for detailed information and configuration instructions.

Windows NT

NPort 6000 Series

RS-232

TCP/IP

Telnet/

SSH

Terminal ASCII Mode

Terminal ASCII mode can handle up to 8 sessions per port with the ability to switch between sessions on the same terminal. This mode is used for text-based terminals with no file transfer capability or encryption.

Terminal BIN Mode

Terminal BIN mode allows one session per port and is used for terminal applications that include file transfer features.

SSH Mode

SSH mode allows one session per port and is used for secure terminal applications that abide by the SSH protocol.

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NPort W2250/2150 Plus User’s Manual Choosing the Proper Operation Mode

Reverse Terminal Applications

Unix Windows NT

TCP/IP

Teln e t

NPort 6000 Series

RS-232

Router Server Server

Reverse terminal applications are similar to terminal applications in that they involve using the NPort 6000 to manage the connection between a terminal and a server. The difference is that with reverse terminal applications, the terminal is connected through the network and the server is connected through the serial port, rather than the other way around. In practice, a reverse terminal session typically involves a network administrator telnetting to a device that has a dedicated serial console port used specifically for configuration purposes.

For example, many routers, switches, UPS units, and other devices (including the NPort 6000) have Console/AUX or COM ports to which a terminal can be physically connected for console management. With the NPort 6000, the device’s console port can be connected to a serial port on the NPort 6000, allowing a network administrator to telnet to the device remotely through the network. Although modern network equipment generally allows other options for remote configuration through the network, there are situations in which it is necessary or desirable to configure a device by serial console (e.g., for security reasons, when using older-generation equipment, or as a backup configuration method when the network is down).

NPort 6000 reverse terminal modes allow the use of the NPort 6000 User Table or a RADIUS server for identity verification purposes. Please refer to the Misc. Network Settings section in Chapter 8, System Management Settings, for instructions on setting up the NPort 6000 User Table.

Reverse Telnet

Reverse Telnet mode is widely used for device management in telecommunication control rooms. The system waits for a host on the network to initiate a connection. Since TCP Server mode does not assist with conversion of CR/LF comm ands, reverse terminal applications that require this conversion should use Reverse Telnet mode.

Reverse SSH

The NPort 6000 also offers a Reverse SSH mode so you can use SSH utilities such as PuTTY to connect to remote servers.

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