6-Way Intelligent Fieldbus Junction Box

Our Bulletin 1788 6-way Intelligent Fieldbus Junction Box provides a fault-tolerant method for connecting field devices to a Profibus-PA or FOUNDATION Fieldbus (H1) network. The unit comprises a bus-input port, bus-output port, and six field device drop-line ports. Each drop-line port’s bus current is continuously monitored. If a fault is detected, the drop is isolated until the fault is corrected. Even with one of the segments shorted, all remaining field devices on the bus are able to communicate.


  • Protects the integrity of a FOUNDATION Fieldbus H1 or Profibus-PA segment by automatically isolating faulty drops and restoring power when faults are corrected
  • Displays useful field bus diagnostic information via status LEDs

Additional Information

  • Our PartnerNetwork™ offers complementary product solutions for products with FOUNDATION Fieldbus connectivity through the Encompass Product Reference program. You can sort and filter products from best-in-industry suppliers in your region to connect to the Rockwell Automation® architecture, or to use with our products.
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Product Selection


Resource Publication Number Language
Foundation Fieldbus Junction Box Quick Start 1788-QS009
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