§4.2 – Proxy Devices

Remember, a ‘proxy’ is a special interface for connecting PROFINET to lower level networks such as PROFIBUS, INTERBUS, etc. A proxy differs from a standard gateway or bridge in that acts as a sub-network master and a PROFINET slave simultaneously. The underlying protocol is therefore mapped directly to PROFINET and the PROFINET controller ‘sees’ the sub-network as remote IO. Proxies are part of the PROFINET specification.

Company: Phoenix Contact; Product: FL NP PND-4TX IB(-LK)

Description: A proxy for seamless and uniform connection of field devices on an INTERBUS network to PROFINET IO. Offers convenient configuration and automatic IP addressing or device-naming via a PROFINET IO controller. Also cgives optimized time behavior since process data is grouped in an efficient manner. Status and diagnostics are provided via a two-figure seven-segment display and additional LEDs.

Company: Comsoft; Product: FNL Proxy PN/PB

This 24 Volt hat rail module contains one PROFIBUS DP interface, four PROFINET IO RT interfaces and one RS232 service interface for commissioning and diagnostics. The proxy integrates both existing and new PROFIBUS DP devices without any modification or adaptation into a PROFINET IO network. It implements a range of PROFIBUS diagnostic functions as well as offering additional features such as a configurable PROFIBUS DP Master in case of a breakdown of the PROFINET IO network and the detailed indication of error codes.

Company: Hilscher; Product: NetLINK

Description: netLINK is a proxy for integrating a PROFIBUS-DP slave into a PROFINET network. It is housed in a standard bus connector format and can be directly mounted on the target equipment. It is either powered via its front connector or with 24 V over an additional terminal. Variants for different applications are available. netLINK is an elegant alternative to today’s available DIN-rail mountable gateways or equivalent rack based systems.

Company: Beckhoff: Product: EK9300

Description: The EK9300 Bus Coupler permits the simple connection of high-performance EtherCAT devices to PROFINET networks.The EK9300 Bus Coupler acts as a PROFINET RT device and integrates a simple EtherCAT master, which connects the EtherCAT Terminals by auto-configuration. One station consists of an EK9300 and any number of EtherCAT Terminals.

Company: Phoenix Contact; Product: FL NP PND-4TX PB

Description: A proxy for seamless and uniform connection of field devices on a PROFIBUS network to PROFINET IO. Offers convenient configuration and automatic IP addressing/device naming via a PROFINET IO controller. Also cgives optimized time behavior since process data is grouped in an efficient manner. Status and diagnostics are provided via a two-figure seven-segment display and additional LEDs.

Company: Siemens; Product: IE/PB Link PN10

Description: Vertical integration of PROFIBUS-based devices into Industrial Ethernet and PROFINET. Transfers the data from the PROFIBUS field devices to Industrial Ethernet/PROFINET and integrates the PROFIBUS devices into a PROFINET-based automation solution. Also, enables configuration of the PROFIBUS devices on an Ethernet-based engineering workstation.

Company: Siemens; Product: IWLAN/PB Link PN10

Description: PN10 is a PROFINET IO proxy which connects PROFIBUS DP slaves to PROFINET IO controllers to provide a link between Industrial Wireless LAN and PROFIBUS. It realizes the flexible integration of field level systems into an IWLAN radio infrastructure according to IEEE 802.11b/g and IEEE 802.11a using SCALANCE W Access Points.

  • From the viewpoint of the IO-controller, all DP slaves are handled like I/O devices with Ethernet interface, i.e. the IWLAN/PB Link PN IO is their proxy.
  • From the viewpoint of the DP slaves, the IWLAN/PB Link PN IO is the DP master

Proxy specifications also exist for DeviceNet.