PROFIBUS connector optical link module

D-Sub data connector (9-pin) for PROFIBUS DP according to IEC 61158, IEC 61784, with optical interface and repeater functionality and fibre optic interface (POF and PCF)

Complete PROFIBUS repeater with integrated fibre optic interface

Space requirement Low weight Assembly time Automation & fältinstallation

Article number Article designation PG interface Diagnostic LEDs
90° cable outlet
For HFBR connector
21700568 ED-PB-90-PG-FO-HFBR-650 yes yes
For SMA connector
21700569 ED-PB-90-PG-FO-SMA-650 yes yes
For BFOC(ST) connector
21700570 ED-PB-90-PG-FO-BFOC-650 yes yes


  • Easy bridging of large distances (PCF 250 m / POF 65 m)
  • Cost-effective due to quick installation (Plug & Play)
  • Galvanic decoupling in case of potentially problematic differences in the PROFIBUS network
  • For universal use in EMC-critical environments
  • Integrated repeater functionality: Regenerates the data signal (edge steepness, level and duty cycle)

Product features

  • Bridging range:
    PCF fibre: 65 m
    PCF fibre: 250 m
  • Diagnostic LEDs (blue, green, red, yellow)
  • Switchable bus terminator is integrated
  • Current consumption typ. 100 mA
  • Supply voltage + 5.0 V DC
    (supplied from the terminal)

Norm references / approvals

  • IEC 61158, IEC 61784


  • D-Sub connector, 9-pin, fastening screws 4-40 UNC
  • Improved electromagnetic compatibility (EMC) thanks to metallized housing
  • Versions with additional Sub-D interface for programming/diagnostics ('PG')
  • An external 24 V supply is not necessary
  • Connection for fibre optic cable (POF or PCF)


  • ETIM 5.0 Class-ID: EC001132
  • ETIM 5.0 Class-Description: D-Sub connector


  • 64 mm x 40 mm x 17 mm (LxWxH)

Protection rating

  • IP 20


  • Sub-D socket, 9-pin
    Fibre optic cable: POF / PCF, 650 nm

Permissible ambient conditions

  • Operating temperature: 0°C to +60°C

Suitable fibre optic cable connectors (POF) are included in the scope of delivery
Photographs are not to scale and do not represent detailed images of the respective products.
Note: 2 modules are required for one optical link.