StarTech RS232 til IP Ethernet Converter (460,8Kbps) Manual [EN]

1 Port RS232 Serial over IP Ethernet Device Server
Actual product may vary from photos
User Manual
SKU#: NETRS2321P
For the latest information and specications visit
www.startech.com/NETRS2321P
Manual Revision: 09/19/2019

Compliance Statements

FCC Compliance Statement
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense. This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Changes or modications not expressly approved by StarTech.com could void the user’s authority to operate the equipment.
Industry Canada Statement
This Class A digital apparatus complies with Canadian ICES-003. Cet appareil numérique de la classe [A] est conforme à la norme NMB-003 du Canada.
CAN ICES-3 (A)/NMB-3(A)
Use of Trademarks, Registered Trademarks, and other Protected Names and Symbols
This manual may make reference to trademarks, registered trademarks, and other protected names and/or symbols of third-party companies not related in any way to StarTech.com. Where they occur these references are for illustrative purposes only and do not represent an endorsement of a product or service by StarTech.com, or an endorsement of the product(s) to which this manual applies by the third-party company in question. Regardless of any direct acknowledgement elsewhere in the body of this document, StarTech.com hereby acknowledges that all trademarks, registered trademarks, service marks, and other protected names and/or symbols contained in this manual and related documents are the property of their respective holders.
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Safety Statements

Safety Measures
• Wiring terminations should not be made with the product and/or electric lines under power.
• Cables (including power and charging cables) should be placed and routed to avoid creating electric, tripping or safety hazards.
Mesures de sécurité
• Les terminaisons de câblâge ne doivent pas être eectuées lorsque le produit et/ou les câbles électriques sont sous tension.
• Les câbles (y compris les câbles d’alimentation et de chargement) doivent être placés et acheminés de façon à éviter tout risque électrique, de chute ou de sécurité
安全対策
• 電源が入っている状態の製品または電線の終端処理を行わないでくださ い。
• ケーブル(電源ケーブルと充電ケーブルを含む)は、適切な配置と引き回し を行い、電気障害やつまづきの危険性など、安全上のリスクを回避するよう にしてください 。
Misure di sicurezza
• I terminiali dei li elettrici non devono essere realizzate con il prodotto e/o le linee elettriche sotto tensione.
• I cavi (inclusi i cavi di alimentazione e di ricarica) devono essere posizionati e stesi in modo da evitare pericoli di inciampo, rischi di scosse elettriche o pericoli per la sicurezza.
Säkerhetsåtgärder
• Montering av kabelavslutningar får inte göras när produkten och/eller elledningarna är strömförda.
• Kablar (inklusive elkablar och laddningskablar) ska dras och placeras på så sätt att risk för snubblingsolyckor och andra olyckor kan undvikas.
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Table of Contents
Compliance Statements ........................................................................1
Safety Statements ..................................................................................2
Product Diagram ....................................................................................5
Top View .......................................................................................................................................................5
Rear View ...................................................................................................................................................... 6
RJ45 Pin Assignment ................................................................................................................................ 7
RS-232 DB9 Pin Assignment .................................................................................................................. 8
Product Information ..............................................................................9
Package Contents ..................................................................................................................................... 9
Installation ..............................................................................................9
DIN Rail Mounting ..................................................................................10
Load Default Settings/System Reset Button......................................10
Load Default Settings .............................................................................................................................. 10
System Reset ............................................................................................................................................... 10
Broadcast Search ....................................................................................................................................... 10
Using the Web Console .........................................................................11
Accessing the Web Console................................................................................................................... 11
Changing/Setting a Login ID and Password....................................................................................11
Conguring System Network Settings .............................................................................................. 12
System Status ............................................................................................................................................. 14
Load Default Setting ................................................................................................................................ 14
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Firmware Update ....................................................................................15
Conguring TCP Mode ..........................................................................16
Conguring UDP Mode .........................................................................18
UART .........................................................................................................20
Resetting the Device ..............................................................................23
Virtual COM Software Operation .........................................................23
Installing the Virtual COM Software ................................................................................................... 23
Conguration the Virtual COM Software ..........................................................................................25
Setting Up COM Mapping ...................................................................................................................... 27
TCP/UDP Settings ...................................................................................29
LED Indicators .........................................................................................31
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Product Diagram

Top View

1
4
3
2
1 LEDs
2 RS-232 DB9 Serial Port
3 Wall Mount Screw Hole
4 DIN Rail Screw Hole
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Rear View

1 32
1 RJ45 Port
2 Load Default/Reset Button
3 DC Jack
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RJ45 Pin Assignment

Pin Description
1 TX+
2 TX-
3 RX+
6 RX-
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RS-232 DB9 Pin Assignment

NOTE: This serial device server performs as a DTE device.
Pin Name IO
1 DCD Input
2 RD Input
3 TD Output
4 DTR Output
5 GND
6 DSR Input
7 RTS Output
8 CTS Input
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Product Information

Package Contents

Serial over IP Device Server x 1
Universal Power Adapter (NA/UK/EU/AU) x 1
User Manual x 1
DIN Rail Kit x 1

Installation

1. Plug in the power adapter and connect the RJ45 interface to
your LAN.
NOTE: Alternatively, you can also use a crossover cable to connect the NETRS2321P directly to your system for the initial conguration.
2. Press and hold the load default button for more than 3
seconds and less than 10 seconds, then release it. This will return the serial device server to factory default and it will respond to the IP address 10.1.1.1.
3. Congure the PC to the same IP domain.
4. Open a web browser and connect to http://10.1.1.1 to
open the conguration interface. The default login ID will be “admin” and the password will be “admin”.
5. Once logged in, you will have access to all conguration
settings including the ability to change the IP address for the device server.
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DIN Rail Mounting

Attach the included DIN Rail brackets (one per side) using the
provided screws to the top DIN Rail screw hole (marked in the above diagram), and clip to your DIN Rail

Load Default Settings/System Reset Button

Load Default Settings

Press and hold this button for more than 3 seconds, then
release to load the factory default settings.
IP address: 10.1.1.1 Subnet Mask: 255.0.0.0 Login ID / Password: admin

System Reset

Press and hold this button for more than 10 seconds, then
release to reboot the device (maintains conguration settings)

Broadcast Search

The Broadcast Search function is used to locate all
NETRS2321P devices that are connected to the same LAN as your computer. Since the Broadcast Search function searches by MAC address and not IP address, all NETRS2321P connected to the LAN will be located, regardless of whether or not they are part of the same subnet as the host.
NOTE: Broadcast packet packets are not passed through a router. The VCom utility can only be used to monitor devices in the same segment of the LAN.
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Using the Web Console

Accessing the Web Console

1. Navigate to an web page and enter the IP Address on the
NETRS2321P device in the Address Bar and press Enter (default IP Address = 10.1.1.1).
2. The Login screen will appear.
Login in Screen
3. Enter an ID and Password and press the OK button (default
ID = admin and password = admin).
4. The Home screen will appear.

Changing/Setting a Login ID and Password

1. From the Home screen, click the Administrator link on the
left-hand side of the screen.
2. From the drop down menu select the Authentication link.
3. The Authentication screen will appear.
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Authentication Screen
4. Enter a new login ID and Password (The ID and Password
must be a maximum of 15 characters and alphanumeric).
5. Press Update button to store the data.
6. Reset the device to for the new ID and Password to take
eect.
Conguring System Network Settings
1. From the Home screen, click the Administrator link on the
left-hand side of the screen.
2. From the drop down menu select the System IP link.
3. The System IP screen will appear.
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System IP Screen
4. On the System IP screen, you can adjust the network
conguration settings by selecting the Static radio button on the IP Congure eld,
5. If the IP Congure eld is set to DHCP mode, all other
settings will be ignored, and the IP address will be assigned by DHCP server after resetting the device.
6. Press the Update button to apply the network changes and
reset the default for the changes to take place.
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System Status

1. From the Home screen, click the Administrator link on the
left-hand side of the screen.
2. From the drop down menu select the System Settings link.
3. The System Settings screen will appear.
System Settings Screen
4. On the System Settings screen, you can display the system
Kernel rmware version and MAC Address.
5. You can also adjust the device alias (Target Name) and Idle
timeout settings. The Target Name eld allows a Max of 12 alphanumeric characters, including underscore, and dash.
6. Press the Update button to store the Target Name data, and
reset the device for the changes to take eect.

Load Default Setting

1. From the Home screen, click the Administrator link on the
left-hand side of the screen.
2. From the drop down menu select the Load Default Settings
link.
3. The Load Default Settings screen will appear.
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4. On the Load Default Settings screen, you can load and store
the factory default settings into EEPROM.
NOTE: Network settings and MAC address will not be changed.
5. Press Load button to load default settings.
6. Reset the device for the changes to take eect.

Firmware Update

On this page, you can update the rmware via Ethernet.
Note: Pressing the ‘Load’ button will immediately erase the ash with no further warning
1. From the Home screen, click the Administrator link on the
left-hand side of the screen.
2. From the drop down menu select the Load Default Settings
link.
3. The Load Default Settings screen will appear.
1. Press the Load button to erase ash.
2. Wait for erase process to complete.
3. There are two methods to do the Firmware Update action
(TFTP or Web):
Note: Please avoid loss of network connection, power or other interruption during the rmware upgrade procedure.
Web:
Please type in or browse the target image le in the input
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eld, and then press “update” button to continue.
TFTP:
Use Windows Command Prompt window to run the tftp
client program.
Syntax: tftp -i 10.1.1.1 put FILE_DIRECTORY\FILENAME.bin
The rmware update should take about 45 seconds to
complete.
If the update process somehow goes wrong (like power
failure), please connect to http://10.1.1.1 to try and restart the process (you may have to reset the device rst).
Conguring TCP Mode
Note: When TCP mode is set to Server or Client mode, the UDP mode will be disabled automatically. When UDP mode is enabled, the TCP mode will be disabled automatically.
1. From the Home screen, click the TCP Mode link on the left-
hand side of the screen.
2. The TCP Mode screen will appear.
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TCP Mode Screen
3. The following settings can be congured:
Telnet Server/Client: Set the device to be a Telnet Server.
In server mode, the Telnet port listens and waits for a host or other client to make a connection. In this case the Ethernet connected device is the client.
Reverse Telnet: Reverse Telnet works the same as Telnet
Server mode. The Telnet port is listens for a connection after booting up. If you encounter errors when using some Telnet clients, such as the Microsoft interpretation of Telnet for Windows XP you can try the connection using Reverse Telnet mode.
CLI Mode: The Command Line Interface (CLI) allows user
to congure and control NETRS2321P directly through the UART interface.
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Note: CLI mode is only available when NETRS2321P is in TCP Server Mode.
Port Number: This assigns the TCP server port number
that the server will listen on for connecting clients (Only for TCP Server Mode).
Remote Server IP Address: When in Client mode, this
device will automatically try to connect to the remote TCP server with this IP address.
Client Mode Inactive Timeout: When in Client mode,
this parameter sets the time that device will maintain a connection until timeout, if there is no data transfer over the connection. After disconnecting, the device will try to build a new connection again immediately.
Server Mode Protect Timeout: When in Server mode,
this parameter sets the time that device will maintain a connection until timeout, if there is no data transfer over the connection. Once disconnected, only a Client can initiate a new connection to the Server.
4. Once you have completed making changes, press the
Update button to store the data.
5. Reset the device for the changes to take eect.
Conguring UDP Mode
1. From the Home screen, click the UDP Mode link on the left-
hand side of the screen.
2. The UDP Mode screen will appear.
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UDP Mode Screen
3. The following settings can be congured:
Mode:
Disabled: When UDP mode is enabled, TCP mode will
be disabled automatically. In UDP mode, the Local Port will be assigned to this device. You can list the remote connection IP and Port for up to 10 remote devices.
Listen: When in UDP Listen mode, it can only receive
remote UDP data.
Normal: When in UDP Normal mode, it can both receive
and send UDP data to remote units.
Local Port: Assign the UDP port that this unit listens on.
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Remote Address: The remote address table allows users
to set several remote site IP addresses and ports. When sending data, the device will send UDP data to the IP addresses in the table.
4. Once you have completed making changes, press the
Update button to store the data.
5. Reset the device for the changes to take eect.

UART

UART or Universal Asynchronous Receiver Transmitter refers to the RS-232 serial port of the device. All of the port settings can be modied from the UDP screen.
1. From the Home screen, click the UART link on the left-hand
side of the screen.
2. The UART Mode screen will appear.
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UART Screen
3. The following settings can be congured:
Baud Rate: Set the baud rate of UART interface. The
NETRS2321P supports 110, 300, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200 and 230400bps baud rates.
Character Bits: Set the number of data length of UART
interface. The NETRS2321P supports character bits of 5, 6, 7, or 8 bits.
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Parity Type: Set the parity of UART interface. The
NETRS2321P supports parity settings of Odd, Even, Space, Mark or none.
Stop Bit: Set the stop bit length of UART interface. The
NETRS2321P supports 1, 1.5 or 2 stop bits.
Hardware Flow Control: Set the ow control mode of
UART interface as enabled or as none.
UART Memory Overow Count: Shows the number of
overow bytes in network buer.
UART FIFO Overow Count: Shows the number of
overows counted in the UART RX buer.
Delimiter: This sets the Character 1 and/or Character 2 to
be used as the delimiter. When sending data from serial to TCP the data is rst stored in the cache. When set, not until the value of character 1 or 2 is received from the serial side is the data released from the cache and sent to TCP.
Silent time: If there is no data sent or received for the
number of milliseconds specied the connection is dropped.
Drop Character: drops the delimiter character of the
serial port when sending to TCP, (the receiver doesn’t display the character).
4. Once you have completed making changes, press the
Update button to store the data.
5. Reset the device for the changes to take eect.
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Resetting the Device

1. From the Home screen, click the Restart link on the left-hand
side of the screen.
2. The UART Mode screen will appear.
3. Press the Reset button to rest the NETRS2321P.

Virtual COM Software Operation

The Virtual Com application lets you install and congure your NETRS2321P easily over the network. Five function groups are provided to ease the installation process, allow COM mapping, and provide monitoring and IP location server functions.

Installing the Virtual COM Software

1. Using a web browser, navigate to www.startech.com/
NETRS2321P.
2. On the Product page, click the Support tab located in the
middle of the screen.
3. In the Drivers and Downloads section, click on the driver link
that corresponds with the operating system running on the host computer.
4. When the download is complete, right-click the zip folder
and select Extract All.
5. In the list of extracted les, right-click the vcomsetup.exe le
and select Run as Administrator and follow the on-screen prompts to complete the installation.
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6. When the VCOM software has been downloaded, navigate to
the Start Menu or Desktop and select VCOM.
7. The Main screen will appear.
Main Screen
8. Select the Search button to locate all Devices that are
connected to the same LAN as your computer. Since the Search function searches by MAC address and not IP address, all connected devices to the LAN will be located, regardless of whether or not they are part of the same subnet as the host.
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Conguration the Virtual COM Software
1. From the Main screen, select the device you would like to
adjust and click the Congure button.
Main Screen
2. An Authorization screen will appear, you will be prompted to
enter your User ID and Password (Default: admin / admin).
Authorization Screen
3. Click the Update button.
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4. The Congure Dialog screen will appear.
Congure Dialog Screen
5. The port IP and Port number can be congured.
6. Select the OK button to save changes.
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Setting Up COM Mapping

1. From the Main screen, select the Com Mapping link from the
left-side of the screen.
Main Screen
2. The COM Mapping screen will appear.
COM Mapping Screen
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3. Click the Add button.
4. The Add VCON screen will appear.
Add VCON Screen
5. Fill out the following elds to add a VCON:
TCP/UDP: Choose a network protocol.
Server/Client: Choose either Server or Client.
IP Address: Enter the IP Address.
Local Port: Enter a local port number.
COM: Enter a Virtual COM port number.
Remote Port: Enter a remote port number.
6. Click OK to create the COM Mapping
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TCP/UDP Settings

Depending on the protocol you are using, the options below will enable/disable automatically as applicable.
Server/Client (TCP Mode Only)
Set the device to be a Telnet Server. In server mode, the
Telnet port listens and waits for a host or other client to make a connection. In this case the Ethernet connected device is the client.
Set the device to be a Telnet Client. In the case the Ethernet
connected device is the Telnet server or other NETRS2321P in server mode.
IP Address
Depending on your selections above, there are one of three
scenarios:
TCP Server - Disabled
TCP Client - Remote Server Address
UDP - Remote Target Address
Local Port
Assigns the local port for the device to listen on TCP Server –
Assigns the TCP server port number that the server will listen on TCP Client – Disabled UDP – Assign the UDP port that this unit listens on.
COM
Assign the desired virtual COM port number
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Remote Port
TCP Server – Disabled
TCP Client – Assign the remote TCP port you wish to
communicate on.
UDP – Assign the remote UDP port you wish to communicate
on
Enable Control Connection (TCP Server or Client Only)
Enables/Disables control of the serial device on a remote
network. Using the IP address and port number allows the user to gain control of the receiver from a remote location when this is enabled.
Second(s) for Reconnection Interval
Dictates the duration that the software will automatically
attempt to reconnect the COM port to the serial port on the serial device server, for the purpose of keeping the connection alive.
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LED Indicators

LED Name Status Description
Power is on and the device is ready.
Power is o or the device is not ready.
RS-232 port is transmitting or receiving data.
No data is transmitting or receiving in RS-232 port.
Ready
Link/Act
Tx/Rx
On
O
On UTP is link.
Blinking UTP Tx/Rx is activity.
O UTP is not link.
Blinking
O
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Warranty Information
This product is backed by a two-year warranty.
For further information on product warranty terms and conditions, please refer to www.startech.com/warranty.
Limitation of Liability
In no event shall the liability of StarTech.com Ltd. and StarTech.com USA LLP (or their ocers, directors, employees or agents) for any damages (whether direct or indirect, special, punitive, incidental, consequential, or otherwise), loss of prots, loss of business, or any pecuniary loss, arising out of or related to the use of the product exceed the actual price paid for the product.
Some states do not allow the exclusion or limitation of incidental or consequential damages. If such laws apply, the limitations or exclusions contained in this statement may not apply to you.
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