Serial device servers, gateways, and proxy servers

Serial device servers, gateways, and proxy servers

Cross-fieldbus communication

Interface converters, gateways, and proxy servers are the intelligent solution for connecting serial interfaces to Ethernet.

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Device servers, gateways, and proxy servers enable the easy integration of legacy serial devices and fieldbuses into modern Ethernet networks. You can also configure and parameterize multiple networks and subsegments consistently. Industrial time servers provide the Ethernet network with time and location information. The most common industrial data transmission protocols are supported in various combinations.

Your advantages

  • 1:1 integration of networks or subsegments with proxy technology
  • Easy system modernization with transparent communication via multiple bus systems
  • Versatile diagnostics with topology detection and non-proprietary diagnostic concepts
  • Easy scalability with multi-port and modular versions

Connecting bus systems to Ethernet networks

Ethernet-based systems have one major advantage: subsystems can be consistently integrated into the communication and diagnostics concept using interface converters, gateways, and proxy servers. Therefore, you can also access field devices via the PROFINET controller. This means that there is no duplicate configuration or addressing. You can therefore also integrate subsegments or older systems without Ethernet into your network. For example, a robot cell in automotive production uses INTERBUS. However, the various control cabinets are networked via PROFINET.

Serial device servers

Various versions of serial device servers as multi-port devices  

Serial device servers – overview of versions

Serial device servers enable the easy integration of legacy serial devices and buses into modern Ethernet networks.

Many applications involve multiple serial devices in close proximity, such as bar code scanners and printers, that need to be connected to Ethernet. In this case, using a multi-port converter saves money and valuable space in the control cabinet.

Furthermore, the application can be customized to allow different users to access different serial interfaces via a single converter.

Your advantages:

  • Embedded web server enables easy startup and configuration
  • Can be used in any industry with the wide operating temperature range (-40°C ... +70°C) and approval for hazardous areas
  • Minimal space required in the control cabinet due to the compact shape and size
  • The 256-bit AES encryption and authentication mechanisms prevent unauthorized access to the devices
  • The user can troubleshoot problems quickly and easily with the extended diagnostic functions of the serial ports
  • Seamless integration of virtual COM ports due to native Windows drivers ensures consistently high performance, especially for multi-port applications.

Protocol-transparent serial device servers

Free virtual COM port software supplied as standard  

Virtual COM port application with PC and serial devices

The serial device servers of the GW DEVICE SERVER... series are used to connect standard serial devices (usually with RAW or ASCII file formats) to Ethernet networks. The devices can be used as a “virtual COM port” or as a native TCP or UDP Ethernet device.

Protocol converters and gateways:
Modbus/RTU, RAW, and ASCII to Modbus/TCP and EtherNet/IP™

Easy conversion to industrial protocols  

Integration of any ASCII protocol into Modbus or EtherNet/IP™

Modules of the GW MODBUS TCP/RTU... series are used to convert Modbus/RTU (or ASCII, serial) to Modbus/TCP. These modules are extremely powerful and can be configured for any combination of Modbus client and server.

Modules of the GW MODBUS TCP/ASCII... series can be used to make serial RAW or ASCII strings from devices such as bar code scanners, scales or RFID tags available via the Modbus protocol. You can convert these strings to EtherNet/IP™ using modules belonging to the GW MODBUS EIP/ASCII... series.

Protocol converters and gateways: Modbus to EtherNet/IP™ or PROFINET

Integrate any Modbus device into the EtherNet/IP™ or PROFINET protocol  

Integrate any Modbus device into the EtherNet/IP™ or PROFINET protocol

You can integrate Modbus servers into the EtherNet/IP™ or PROFINET protocol using modules from the GW EIP/MODBUS… or GW PN/MODBUS... series. This allows you to integrate existing Modbus devices into the widely used Ethernet-based EtherNet/IP™ or PROFINET protocol.




Seamlessly connect PROFIBUS devices (such as controllers or drives) to a PROFINET controller. This user-friendly gateway provides a simple migration path for installed equipment and is suitable for use in any industry. Device configuration and communication diagnostics can be easily performed via web-based management.

Gateway: From HART to HART-IP, Modbus/TCP, PROFINET, and OPC UA

Easy retrofitting for access to HART signals  

High-performance access to HART signals via Ethernet

The modules of the GW PL… series consist of a front module and up to five extension modules. These modules enable easy parameterization and monitoring of HART field devices via OPC UA. This enables access to process data via the cloud without affecting the process-driving system.

You can connect up to 40 devices with the modular HART Ethernet gateway.

Gateway: From HART to OPC UA for NAMUR Open Architecture (NOA)

NAMUR Open Architecture  

NAMUR Open Architecture

The GW PL ETH/UNI head station communicates via OPC UA in accordance with the NAMUR Open Architecture (NOA) concept. Here, the device acts as a data diode for forwarding diagnostic data and process data from HART field devices to any cloud system.

Process efficiency is monitored through analysis and processing of the data gathered. When necessary, the information is fed back to the ERP system, for example to automatically generate maintenance orders. This configuration does not affect or endanger the process-driving systems.

Gateways and proxy servers: From INTERBUS to PROFINET

Proxy for INTERBUS  

Proxy for INTERBUS

Do you want to integrate an INTERBUS application into a PROFINET network? Then the FL NP PND-4TX IB is the ideal solution. Simply parameterize the device using your go-to programming tool. You can use the integrated switch in the control cabinet as an uplink to the control system or in the field for series connection.

Gateways and proxy servers: PROFIsafe communication across network boundaries

Proxy for PROFIsafe  

Proxy for PROFIsafe

One-of-a-kind: consistent PROFIsafe communication across network boundaries.

The PROFIsafe gateway from Phoenix Contact allows secure communication between two PROFINET networks. This means that you can implement functional safety, such as emergency switch-off concepts, across systems and manufacturers.

Industrial time servers: Time and position localization for Ethernet networks with GPS, GALILEO or GLONASS

Industrial time servers for Ethernet networks  

Industrial time servers for Ethernet networks

The FL TIMESERVER NTP industrial time server makes time information available in the Ethernet network via NTP protocol. The time is received via GPS, GALILEO or GLONASS independently of other NTP services and without an Internet connection. With the robust IP68 housing with an integrated antenna and Power over Ethernet (PoE) supply, you can install the device outdoors without any problems.


586 Fulling Mill Road
Middletown, PA 17057
(800) 888-7388


Industrial time server

The alternative to Internet-based time services and public NTP servers.

Speaking a common language: Getting your devices ready for IIoT

Your equipment has a lot to tell you if you have a way to listen. With minimal investment and effort, you can take the first step into the realm of the Industrial Internet of Things (IIoT).

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