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ESport Ethernet Serial Servers

Includes Virtual Serial port Redirector Software to Access Serial Devices from Windows On-line Store

The ESport-10x Ethernet serial servers connects RS-232, RS-422 and RS-485 serial devices to an Ethernet LAN/WAN allowing virtually any asynchronous serial device to be accessed over a network.

The ESport-10x includes the VCOM software for Windows, which creates Virtual COM ports in the Device Manager which redirect data to and from the ESport serial devices. The LAN becomes transparent to the serial devices and the software running on the PC. The ESport also includes a Heart Beat feature to insure a reliable communications connection.

ESport 101 Single Serial Port
ESport 102 Dual Serial Port

ESport 104 Four Serial Port model is also available


  • DIN rail or Panel mount.

  • Supports 10/100 Mbps Ethernet.

  • Supports RS-232, RS-422, and RS-485 serial interface.

  • Supports LAN and WAN communications.

  • In Server mode supports individual client sessions for security.

  • Management access password protected.

  • Virtual COM drivers for Windows XP/2000/NT/ME/98.
  • Supports socket connection, TCP server, TCP client,  and UDP.

  • Supports up to 8 TCP connections in TCP server mode.

  • Heart beat connection ensures reliable TCP connection against power failure or network disruption.

  • Supports loop back mode. Data is echoed back for easily testing the connection.

  • Manage via Telnet, a Serial Console, or by the included management software.



The ESport-10x can be configured as to use either TCP or UDP, and can act as a Client or Server.
The ESport-10x operates in “Direct IP Mode”, “Virtual COM Mode”, and “Paired Mode”.

 Direct IP Mode

Direct IP connections allow applications using TCP/IP or UDP/IP network socket programs to communicate with the asynchronous serial ports on the ESport-10x. In this type of application the ESport-10x is configured as a TCP or UDP server. The socket program running on the PC establishes a communication connection with the ESport-10x. The raw data is sent directly to and from the serial port.

 Virtual COM Mode

The Virtual COM mode requires the installation of the VCOM virtual COM port device driver for Windows. In this mode, the ESport-10x must be configured as a TCP or UDP server. The virtual COM port driver is a TCP or UDP client. Once the connection is made, the LAN is transparent to the serial device. Applications work just as if the serial device is connected a host’s physical COM port. The virtual COM port converts the application’s data into IP packet destined for the ESport-10x, which in turn converts the IP packet back to serial data.

Paired Mode

Paired mode is also known as serial tunneling. When this type of configuration is selected, no additional software is needed to install in a host PC. In fact a PC is not required to make the connection. Any two dumb serial devices that can communicate with each other through a serial link will be able to communicate using two ESport-10xs and the LAN. Two ESport-10xs are configured with one setup as a Server and the other as a Client (Using either TCP or UDP). server. When setting up the Server, the Remote IP address section must contain the address of the Client. This will allow the Client’s IP address to pass the IP address-filtering feature of the Server. Conversely, the Remote IP address of the Client must contain the Server’s IP address.


Heart Beat

The ESport-10x provides a convenient way to establish reliable communications between two devices. Communication port 5300 is reserved for the Heartbeat Protocol. If a loss connection occurs the Heart Beat feature will try to reconnect the TCP data connection every 5 seconds until communications is established again.


Loop Back

ESport-101/ESport-102 supports Loop back Mode, in which all data is sent back immediately. This feature simplifies testing the connection, as no serial device is needed.


Serial Interface Male DB9
Serial Speed 1200bps ~ 230.4Kbps
Serial Flow Control None, Hardware
Line Settings

Data Bits: 5, 6, 7 or 8
Stop Bits: 1, 1.5 or 2
Parity: None, Even, Odd, Mark, Space


8K bytes per port
64K bytes for ESport-101/ESport-102,
32K bytes for ESport-104

Serial Pins RS232: Rx, Tx, RTS, CTS, DTR, DSR, GND
RS422: Tx+, Tx-, Rx+, RX-, RTS+, RTS-, CTS+, CTS-, GND
RTS-485: Data +, Data –, GND
Network Interface 10/100 Autodetect. 10 Base-T & 100 Base-Tx Ethernet with RJ45
Protocols TCP, IP, ARP, DHCP, Telnet, HTTP, UDP, ICMP
Security User ID & Password
Management Telnet, Serial console port & Management Software
LED Displays Power/Run(Ready), Ethernet Link, Serial Activity per port
Supply Power Voltage Supports 9V ~ 15V DC
Inclued Power Supply: 12V DC 500 mA
Supply Power Current 300 mA ESport-101,
300 mA ESport-102,
500 mA ESport-104
Operating Temperature 0 to 50 °C (32 to 122 °F)
Storage Temperature -20 to 60 °C (-4 to 140 °F)
Dimension ESport 101/102: 3.35 x 4.5 x 0.90 in (8.5 x 11.5 x 2.3 cm)
ESport 104:4.5 x 7.3 x 1.1 in (11.4 x 18.5 x 2.9 cm)
Weight 280g
Approvals CE, FCC
Warranty 1-year Limited Warranty




Pin Assignments

Male DB9




















































Supported Application Software

Applications are widespread throughout many enterprises in all major industries. Access to devices such as digital cameras, pan/tilt devices, access control boxes, card readers, machine tools, POS equipment and a whole range of other traditional computer peripherals can be done over the network through the use the ESport serial servers. Typical applications include:

  • Security system control.
  • Process control.
  • Factory automation.
  • DCB multiplexers.
  • Access Switches.
  • Multi-point data collection.
  • ATM access.
  • PBX management.
  • Bar code scanners.
  • Climate control devices.
  • Legacy applications which only communicate with a local COM port.

Service and Support

Our goal at PC Micro is complete customer satisfaction. Our technical staff has many years of experience with serial and modem solutions, and can assist with troubleshooting a wide range of application and hardware.

If you have any questions you can call your account manager directly by phone, or email us your questions for a quick response. Our engineers answer emails 12 hours a day on weekdays and evenings, including US holidays for our international customers.


Pricing starts at $115 USD for the single port model with power supply and VCOM software for unlimited PC's.
We provide free technical support, for the life of the product.

Visit our on-line store for a price list, or you can request a quote.



For additional information, please contact our sales department:
Phone:   +1-805-493-8388 7am-5pm PST.
Toll-Free: 1-800-922-0005 7am-5pm PST.
Email: Sales@pcmicro.com

Windows is a registered Trademark of Microsoft Corporation. ESport is a trademark of Passport Networks Incorporated.
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