#{ '$' + (selectedVariant.price/100).toFixed(2) } $1,485.00

ProfiHub B4FO2+ - PROFIBUS Fiber Optic to RS485


MPN 17420

Stock Status: Out of Stock In Stock

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Authorized North America Distributor Stamp

The ProfiHub B4FO2+ can be utilized as a means of creating fiber optic backbone structures and long multi-device star/tree segments. This device can support multiple fiber optic topologies such as point-to-point, star, and bus. 

A new additional feature is the integrated micro ProfiTrace diagnostic unit.

Some applications have strict rules regarding spur lines or star segments due to potential communication errors caused by reflections, which can be quite expensive to resolve with repeaters. The ProfiHub B4F02+ is a cost-effective solution that can assist in establishing reliable spur lines in high speed DP networks. It is transparent for all PROFIBUS DP protocols.

The ProfiHub B4FO2+ comes with 4 galvanic isolated RS 485 channels, which enable the extension of network structures to a maximum of 31 devices per channel and a length equivalent to the main bus. Devices can be added or removed easily because the ProfiHub B4F02+ creates isolated segments.

Installation is extremely simple with the product’s DIN-rail mountable metal housing as well as its integrated termination that can be switched on/off. In addition to this, direct or capacitive grounding can be selected at the user’s discretion. Each ProfiHub is powered by a 12-24 DC Voltage. The ProfiHubs come with LEDs built into the outside of the device in order to indicate the status of each channel, making troubleshooting and maintenance much easier.

Application Areas

  • Create Fiber Optic backbones
  • Dynamic spur lines to actuators, flow meters, and pH analyzers
  • Removable drives and motors
  • Pull/Plug motor control centers (drawers)
  • Roof mounted devices in tank farms
  • Barrier for non-galvanic isolated equipment
  • Networks with requirement for High Availability/uptime
  • Large star/tree structured networks

Additional Benefits

  • Hot slave insertion and removal during operation
  • Short circuit protection on each channel
  • Option to create a redundant path to other Hubs or ComBricks
  • Compact and robust construction
  • Status and error display (per channel)
  • Suitable for all DP cables
  • Conveniently arranged networks
  • Easy extendable installations
  • On-board DB9 female connector on each channel for maintenance activities
Documents & Drivers

Delivery: Ships within
5 to 7 business days

Availability: in stock

30 day Money Back Guarantee *Some Exceptions Apply

Warranty: 1 year Comprehensive support for all products


We have the best technical support engineers that know how to use our products. If our Tech Support cannot solve your problem, we will contact the design engineer or manufacturer to help find a resolution.