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Reliable PROFIBUS DP networks in demanding environments

The robust PROFIBUS D1 repeater is the ideal product for creating reliable PROFIBUS DP networks in demanding IP 66 environments where persistent dust and water are constantly present.

By means of male-female M12 connectors, technicians can quickly and simply shape a PROFIBUS DP network. An additional M12 connector makes it possible to connect ProfiTrace to a running system by means of an adapter. This results in increased uptime and optimisation of the entire production process.

Advanced core and increased strength

The advanced 12 Mbps core of the D1 is identical to the ProfiHub; it can be cascaded without limitations and has increased RS 485 strength.

It does not have the frustrating short-circuit bug and the data is constantly monitored for glitches that are digitally filtered out. Every channel has on-board switchable termination and able to drive 31 devices.

Product Information

ProfiHubs and ProfiSwitches are equipped with galvanically isolated transparent repeaters. Behind each repeater, a segment is created that is able to handle 31 devices with a cable length equal to the main bus. Each repeater prevents short circuits and other bus problems. The ProfiSwitch can also customise the baudrate on each channel.


  • Screw terminals as well as DB9 connector
  • Redundant power supply
  • Supports all PROFIBUS RS 485 protocols
  • Hot slave insertion and removal during operation
  • Short circuit protection on each channel
  • Compact and robust construction
  • Status and error display (per channel)
  • Suitable for all DP cables
  • Straightforward networks
  • Extendable installations
  • Cost reduction

  • 1 Channel (2 segments)
  • Transparent for all PROFIBUS DP protocols
  • Suitable for PROFIsafe and MPI
  • 9.6 kbps – 12 Mbps (auto-detection)
  • 31 bus-loads per channel
  • 1200 m cable length (depends on baudrate)
  • No limit to cascading
  • Termination switches
  • No address required


  • M12 monitoring port: 2x M12 male-female per segment + 1 M12 for ProfiTrace
  • pin 1: VPP
  • pin 2: PB-A
  • pin 3: DGND
  • pin 4: PB-B
  • Thread: Shield (PROFIBUS standard)

M8 Power supply

  • pin 1: +24 VDC
  • pin 2: +24 VDC
  • pin 3: GND
  • pin 4: GND
  • Thread: Shield
  • Current consumption: 125 mA @ 24 VDC
  • Operating voltage: 9 .. 31 VDC


  • Weight: 500 g
  • Temperature: -25 .. 70 ˚C
  • IP 66 classification
  • Dimensions (LxWxH): 169 x 79 x 29 mm


  • This product is UL-listed. Read more about UL-certification.
  • Dynamic spur lines to devices
  • Star, tree, and bus structured networks
  • Pull/Plug motor control centers
  • The barrier for non-galvanic isolated equipment
  • EMC-sensitive applications
  • Applications with device and cable stress

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