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...

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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.

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Serial Port Servers

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    • 1 serial port server with...

    1 serial port server with RS232 or 422 or 485. Serial Device Server. Virtual COM port. Pair connection

    External COM port via Ethernet and Internet
    Can also provide Pair connection (back-to-back)
    Small size for easy installation
    Genuine COM / TTY drivers for Windows and Linux
    Standard TCP/IP interface and versatile operating modes
    Easy-to-use Windows multi-device server configuration tool
    Built-in 15 KV ESD protection for all serial signals
    SNMP MIB-II for network management
    Configure via Telnet or web browser
    Power supply included

    Price 1,715.00 DKK
    Product code: ETH1SER5150
    Physically in stock  
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    • 1 port serial server RS232...

    1 port serial server RS232 / RS422 / RS485. Serial Device Server RJ45, DB9, 9 - 30VDC

    External COM port over Ethernet and Internet
    RS232/422/485
    Atop SE5201-DB Serial Device Server
    10/100Mbit Ethernet.
    Serial port via DB9 male connector
    Supports TCP Server/Client, UDP, Virtual COM and Tunneling modes
    Power is supplied from 9 - 30VDC or 5VDC (power jack)
    Power supply not included
    DIN kit (option)
    Dimensions: 65 x 78 x 28mm (without wall bracket)
    Dimensions: 88.5 x 84 x 27.8mm (with wall bracket and DB9 port)

    Price 1,525.00 DKK
    Product code: ETH1SER-MINI+
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    • 4 Ports RS232 Extender over...

    4 Ports RS232 Extender over fiber cable 1200 - 115Kbps, 4 x DB9 male connector. 100Mbit SFP Multi Mode or Single Mode.

    4 COM ports via optical fiber cable
    point to point or pount to 4 points
    4 x RS232 ports up to 2km with multi mode cable
    4 x RS232 ports up to 20km with single mode cable
    Buy 100Mbit SFP Module (Multi Mode or Single Mode)
    1 x 100 Mbit SFP for LC Duplex Fiber cable
    4 x RS232 DB9 male connector
    Setup via built-in Web server
    62 x 50 x 120 mm
    DIN fittings
    Display 3 LEDs Displays TX / RX, Network and System Status
    Supply voltage: 9 - 32VDC Redundant (not supplied)

    Price 4,447.00 DKK
    Product code: BOOST-4RS232-FIBER
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    • 1 serielportserver port...

    1 serielportserver port RS232 / 422/485, DE-MOXA 211 Serial Device Server

    External COM ports via Ethernet and Internet
    3-in-1 Serial Port: RS-232, RS-422, OR RS-485
    Modes: TCP Server, TCP Client, UDP
    Ethernet Modem
    Pair Connection
    Real Com / Tty Drivers for Windows and Linux
    2-wire RS-485 with Patented Automatic Data Direction Control (Addc®)
    Built-in 15 kV ESD Protection for All Serial Signal

    Price 1,355.00 DKK
    Product code: ETH1SER+
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    • 4 Ports Serialport Server...

    4 Ports Serialport Server RS422 / RS85, Moxa Nport 5430. Serial Device Server

    External COM ports via Ethernet and Internet

    Easy IP Address Configuration with LCD Panel
    10 / 100Mbit Auto-Sensing Ethernet
    4 Serial Ports, With Support for RS422, and RS485 < Br> Built-in 15 kv ESD Surge Protection for All Serial Signals
    Versatile Socket Operation Modes, Including TCP Server, TCP Client, and UDP
    Choice of Configuration Methods: Web Console, Telnet Console, and Windows Utility
    SNMP MIB-II for Network Management
    -40 to 75 ° C Operating Temperature

    Price 3,000.00 DKK
    Product code: ETH4SER485+
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    • 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 2,812.00 DKK
    Product code: ETH2SER232+
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    • 1-PORT RS422/485 serielportserver

    1 port serial port server RS422 / 485, MOXA NPort 5110A. Serial Device Server

    1-port RS422/485 serial device server, MOXA NPort 5110A

    Only 1 W power consumption
    Speedy 3-step web-based configuration
    Surge protection for serial, Ethernet, and power lines
    COM port grouping and UDP multicast applications
    Screw connectors for secure installation
    Real COM/TTY drivers for Windows and Linux
    Standard TCP/IP interface and versatile TCP and UDP operation modes
    Connect up to 8 TCP hosts

    Price 1,733.00 DKK
    Product code: ETH1SER5130A
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    • 1 port serial port server...

    1 port serial port server RS232, POE or 12-48VDC. Serial Device Server

    External COM port via Ethernet and Internet
    RS232 Serialport via DB9 male
    Power supplied from PoE
    can be powered from 12 - 48VDC / 1.7 watts
    Short Power Jack Pigtail Cable included
    Purchase Power supply, not included
    1 x RJ45 with PoE input
    DIN mount
    Operating temperature: -25 - + 75 ° C
    Dim: 90 x 52 x 27 mm

    Price 1,174.00 DKK
    Product code: ETH1SER-POE-I
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    • Ports 2 MODBUS...

    Ports 2 MODBUS serielportserver 1 x RS232 + 1 x RS422 / 485th Serial Device Server Box Box option

    Modbus over the Ethernet or Internet
    MODBUS server with 1 x RS232 and 1 x 422/485
    Can run Device to Device
    0/100 Mbps Ethernet port, auto MDI / MDIX, 10/100 auto, 1500V magnetic insulation only on
    RS485 RS232 Modbus ASCII / RTU port, 1 RS422 / 485 Modbus ASCII / RTU port, 16V / 400W TVS isolated, RS485 automatic line control
    9 ~ 30VDC power input, IP30 enclosure , DIN rail mounting structure, USB port (Modbus serial port expansion and capture of memory)

    Price 2,893.00 DKK
    Product code: ETH2MOD
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