Serial device servers and gateways

Optimum connection

Optimum connection

Make your devices network capable. Serial device servers and gateways connect serial interfaces to Ethernet.

Back to Industrial communication technology


Search in Serial device servers and gateways

Show all products in this category

Device servers and gateways enable easy integration of legacy serial devices and buses into modern Ethernet networks. Thanks to the embedded web server, startup and configuration are a breeze. The 256-bit AES communication encryption, the wide operating temperature range (-40°C to 70°C), and approval for hazardous areas make the devices suitable for use in any industry. The most common industrial data transmission protocols are supported, with various combinations of serial transmission. These combinations are: RAW, ASCII, HART, Modbus/RTU, TCP/IP, Modbus/TCP, PROFINET, and EtherNet/IP™.

Your advantages

  • Compact, DIN rail mounting form factors require less space in the control cabinet and make installation easier.
  • Multiport and modular versions allow you to scale your application easily.
  • Unauthorized access to the devices is prevented, thanks to 256-bit AES encryption and authentication mechanisms.
  • The advanced diagnostic functions of the serial port enables the user to perform quick and easy troubleshooting.
  • The seamless integration of virtual COM ports through native Windows drivers guarantees consistently high performance, especially for multi-port applications.

Hardware: the right solution for your application

Various versions as multiport devices  

Serial device server version overview

Different versions are available with multiple Ethernet ports and serial interfaces.

In some distributed applications, multiple small control cabinets may be connected together via Ethernet. The converters are available with integrated 2-port Ethernet switches for “daisy-chaining” applications. This saves space inside the control cabinet and reduces the overall cost by eliminating the need for additional Ethernet switches inside each cabinet.

Many applications involve several serial devices in a confined space. These devices, such as barcode scanners and printers, have to be connected to Ethernet. In this case, using a multiport converter saves valuable space in the control cabinet and money. Further, the application can be customized to suit individual requirements. This means different users can access different serial interfaces via a single converter.

Simply select the version that's right for your application.

Device server

Free virtual COM port software included  

Virtual COM port application with PC and serial devices

The GW DEVICE SERVER… modules are used to connect standard serial devices (usually with RAW or ASCII data formats) to Ethernet networks. They may be used either as a “virtual COM Port” or as a native TCP or UDP Ethernet device.

Modbus/RTU to Modbus/TCP

Modbus/TCP to Modbus/RTU/ASCII  

Modbus gateway for connecting serial devices to Ethernet

The GW MODBUS TCP/RTU… modules are used to convert Modbus/RTU or Modbus/ASCII to Modbus/TCP. These modules are extremely powerful and can be configured for any combination of Modbus client and server.

RAW/ASCII to EtherNet/IP™ or Modbus

Easy conversion to industrial protocols  

Integration of any ASCII protocols in Modbus or EtherNet/IP™

The GW MODBUS TCP/ASCII… modules are used to make RAW or ASCII serial strings from devices such as barcode scanners, weigh scales, or RFID tags available using the Modbus protocol.

In contrast, the GW EIP/ASCII… modules are used to convert RAW or ASCII serial strings from devices such as barcode scanners, weigh scales, or RFID tags into EtherNet/IP™.

HART to Ethernet

Easy retrofitting for access to HART signals  

High-performance access to HART signals via Ethernet

The GW PL… stations, which consist of a front module and extension modules, provide a simple way to parameterize and monitor HART field devices via Ethernet networks. Up to five extension modules can be connected per front module. Ethernet connectivity is achieved using HART IP, Modbus/TCP or PROFINET. Thanks to the modularity of the HART to Ethernet gateway, you can connect up to 40 HART devices.


C6 The Exchange
Calmount Park
Dublin 12
D12 XE18