Filter By

Serial Port Servers

Equipment with a serial port is usually connected directly to the computer when the distance is less than 15 meters.

With a serial port server (Serial Device Server), the equipment can be connected anywhere on a network so that all network users can use them. This applies to both local and internet. When connected over the Internet, the reach becomes global.

Serial Device Servers

It has the task of making a...

Equipment with a serial port is usually connected directly to the computer when the distance is less than 15 meters.

With a serial port server (Serial Device Server), the equipment can be connected anywhere on a network so that all network users can use them. This applies to both local and internet. When connected over the Internet, the reach becomes global.

Serial Device Servers

It has the task of making a serial port available on a network. It is a compact computer that has an Ethernet network interface and one or more serial ports. Its firmware is only for sending data from the network to the proper serial port and transmitting data received on serial ports to the network. The protocol is TCP / IP (Internet Protocol), so even a serial port server with many ports has only one IP address and each serial port has its own port number.

Three communication methods

In principle, it can be communicated with serial port servers in 3 different ways:

  • The "Winsock" method
  • "Virtual com driver" method
  • "Box to box" method

Used if there is no computer with network function available. The two serial port servers are configured to send data to the counterpart. They are defined as "Master" and "Slave", each with its own IP address and the counterparty's IP address. In principle, it is a fixed connection between the serial ports and it is important that the connection be independent of operating systems and software versions otherwise used on the network.

The "Box to box" method is also the only usable solution in cases where the system cannot include software that uses "sockets" or COM port drivers, for example. a PLC and a simple measuring port with serial port.

In all common programming languages ​​for Windows (Visual C ++, Visual basic, Delphi and others), TCP / IP is accessed via "Winsock", releasing the programmer to kno

The "Winsock" method

This method assumes that the applications using the serial port server have access to the network via the TCP / IP protocol using the networking features built into Windows. It is the standardized interface for these features called "Winsock".

In all common programming languages ​​for Windows (Visual C ++, Visual basic, Delphi and others), TCP / IP is accessed via "Winsock", releasing the programmer to know all the details of the underlying network protocols.

Once the protocol, IP address, port number and client / server status are selected, free-form data blocks can be exchanged between the program and the serial port server.

Many types and variants

There are a variety of variants among serial port servers. The number of serial ports per. unit varies from 1 to 16, and the serial ports can be traditional RS232 ports with "point to point" connection up to approx. 15 m or RS422 ports with balanced "point to point" signals up to approx. 1200 m and RS485 ports, for "multidrop" connection, where up to 32 serial ports can share the same 2- or 4-wire bus. Here, the range will also be up to 1200 m.

Most serial port servers use the wired Ethernet network interface, others use wireless networks (Wifi) or fiber optic cable, where the network connection is via fiber optic cable.

Serial Port Servers

There are 51 products.

Showing 1-20 of 51 item(s)

Active filters

  • 3 ports trådløs device...

    3 ports trådløs device server til GSM, RS232 / 485

    Seriel port: 2 x RS232, 1 x RS232/485 maks. 115 Kbps
    Signaler: RS232: Rx , Tx , RTS , CTS 
    RS485: Data +, Data - (2-leder halv duplex)
    Digital I/O: 6 indgange og 2 udgange TTL
    Protokoller: TCP, PPP
    Stik til digital I/O: Skrueterminaler
    3/5V SIM kortholder indbygget
    3 lysdioder viser GPRS- og systemstatus
    Strømforsyning: 9 - 35 VDC maks. 4,8 Watt. medfølger ikke
    Leveres med beslag til DIN skinne

    Price 999.00 DKK
    Product code: ETH3SER-GSM+
    Physically in stock  
  • MOXA NP5232I 2 X RS422 /...

    MOXA NP5232I 2 X RS422 / 485 optoisoleret serielportserver

    2-port RS422/485 serial device servers, MOXA NP5232I
    Compact design for easy installation
    Socket modes: TCP server/TCP client/UDP
    Easy-to-use Windows utility for configuring multiple device servers
    Supports 10/100M Ethernet
    Patented ADDC® (Automatic Data Direction Control) for 2-wire and 4-wire RS-485
    SNMP MIB-II for network management

    Price 1,770.00 DKK
    Product code: ETH2SER485+2I
    On the way in  
  • Ethernet til CAN device...

    Ethernet til CAN device server. CAN til Ethernet gateway

    Internet communication controller med 1 X CAN bus, 1 X RS-232, 1 X RS-485 og 1 X Ethernet
    10/100 Base-TX Ethernet controller
    TCP/IP protokol
    80 MHz CPU
    1 x RS-232 port, 1 x RS-485 port og 1x CAN port kan benyttes samtidig
    Max transmission speed op til 1M bps for CAN og 115.2kbps for RS-232 & RS-485
    7-segment LED display
    Software konfiguration til CAN and RS-232
    Web Konfiguration
    Op til 25 Ethernet client tilslutninger
    Supporterer Virtual COM 

    Price 2,120.00 DKK
    Product code: M485-ETH-CAN
    On the way in  
  • Intelligent CANBUS til...

    Intelligent CANBUS til 10/100 Base- TX Ethernet/ Modbus TCP/ Modbus RTU Konverter

    Intelligent CAN til Modbus TCP/RTU Konverter 
    80186, 80 MHz CPU
    10/100 Base-TX Ethernet kontroller
    TCP/IP protokol
    Supporterer både CANBUS 2.0A og 2.0B.
    Max transmission speed op til 1M bps for CAN og 115.2kbps for RS-232 & RS-485
    LED display
    Software konfiguration til CAN and RS-232
    Driftstemperatur:-25-75 ℃
    Til DIN skinne montering

    Price 2,390.00 DKK
    Product code: M485-ETH-CAN-MTCP
    On the way in  
  • Serielportserver 4 x RS232...

    Serielportserver 4 x RS232 / 485 single port 10/100 Mbit, SFP multi og singlemode

    Omsætter mellem fiber og 4 x RS232/485
    Single port
    1 x 10/100 Mbit Ethernet
    4 x RS232/485 
    Skrueterminalblok (5 polet)
    CPU 16 bit CPU, 100 MHz
    Hukommelse 512 KB RAM, 512 KB flash og 512 bytes EEPROM
    RTS/CTS, Xon/Xoff
    OS support WIN9x/NT/2000/XP
    SFP konnektor til LC fiber
    62 x 50 x 120 m.m. (H x B x D)
    Display 3 lysdioder viser Tx/Rx, Netværks- og systemstatus
    Forsyning 9 - 32 VDC (Medfølger ikke)

    Price 2,323.00 DKK
    Product code: FIBER4SER485
    Physically in stock  
  • MOXA NP5150, NPort...

    MOXA NP5150, NPort serielportsserver, 1 x RS-232/ 422/ 485, DB9 han

    1-port RS-232/422/485 serial device servers, MOXA NPort 5150.

    • Small size for easy installation                                                                  
    • Real COM/TTY drivers for Windows and Linux
    • Standard TCP/IP interface and versatile operation modes
    • Easy-to-use Windows utility for configuring multiple device servers
    • Built-in 15 KV ESD protection for all serial signals
    • SNMP MIB-II for network management
    • Configure by Telnet or web browser
    • Adjustable termination resistor for RS-485 ports
    Price 1,067.00 DKK
    Product code: ETH1SER5150
    On the way in  
  • MOXA 2 ports RS232...

    MOXA 2 ports RS232 industriel serielportserver

    Serielportserver 2 x RS232 / 422 /485 MOXA Nport 5210
    Compact design for easy installation
    Socket modes: TCP server/TCP client/UDP
    Easy-to-use Windows utility for configuring multiple device servers
    Supports 10/100M Ethernet
    Patented ADDC® (Automatic Data Direction Control) for 2-wire and 4-wire RS-485
    SNMP MIB-II for network management

    Price 1,423.00 DKK
    Product code: ETH2SER232+
    On the way in  
  • MOXA MB3180, 1 port MODBUS...

    MOXA MB3180, 1 port MODBUS ethernet server

    Moxa MGATE 3180 1port RS232/422/485 Modbus TCP to serial.

    • Convert between Modbus TCP and Modbus RTU/ASCII 
    • 1 Ethernet port and 1, 2, or 4 RS-232/422/485 ports 
    • Supports 16 simultaneous TCP masters with up to 32 simultaneous requests per master 
    • Easy hardware setup and configuration

    Price 1,908.00 DKK
    Product code: ETH1MOD-M
    On the way in