- Two-channel long-distance ControlNet fiber-ring repeater
- Works with the 1786-RPA/B repeater adapter
- Supports 62.5/125 µm multimode fiber
1786-RPFRL carries ControlNet traffic around a redundant optical ring rather than extending a single radial fiber path.
Its two channels maintain the ring path while local indicators and a relay expose conditions needed during commissioning and fault isolation.
Correct fiber polarity and distance budgeting are central to a successful replacement because optical continuity cannot be inferred from physical connector engagement alone.
Availability, condition, price, and shipping time for 1786-RPFRL are confirmed during quotation.
Allen-Bradley 1786-RPFRL Long-Distance ControlNet Fiber Ring Repeater Module Manuals, Datasheets, Links
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
- Install no more than two 1786-RPFRL/B modules on one 1786-RPA/B adapter
- Limit a fiber ring to 20 member modules and the complete ControlNet network to 20 km or less
- Route the two optical channels separately and preserve the documented RX-to-TX ring direction
- Use 62.5/125 µm multimode fiber at 1300 nm with ST connectors
- Keep total connector, splice and fiber loss below the 15 dB optical budget
- Use plastic or ceramic ST connectors; do not install metal ST connectors
- Set SMAX at least one address above the highest scheduled ControlNet node
- Verify both channel LEDs and the external fault-relay response during a controlled link interruption
- Confirm ring recovery without exceeding the 20-member or 20 km network limits
- Long-distance ControlNet segment extension
- Redundant fiber-ring communication
- EMI-resistant links between separated industrial areas