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Allen-Bradley 1756-RMC1 fiber optic cable yellow jacket LC connectors 3.28 ft

BFKK

BFKK 1756-RMC1 ControlLogix fiber optic cable 3.28 ft 8.5/125 micron

SKU CH-J8C1-ZBCY9

Fiber optic cable connects ControlLogix redundancy modules with LC connectors and 8.5/125 micron single-mode fiber over 3.28 ft

  • Single-mode fiber ensures reliable long-distance data links
  • 28 ft length fits standard ControlLogix rack spacing
  • 5/125 micron core/cladding matches single-mode specifications
  • LC connector provides secure low-loss connections
  • One transmit/receive channel simplifies redundancy module wiring

ControlLogix Redundancy Cable

The Allen-Bradley 1756-RMC1 is a fiber optic cable designed to link redundancy modules within the ControlLogix series. It serves automation engineers and system integrators building fault-tolerant PLC architectures. The cable uses an LC type connector and operates in single mode with one channel for transmitting and receiving data. It is a new, factory-sealed component for industrial control systems.

3.28 ft Single-Mode Fiber

This cable measures 3.28 feet (1 meter) with core/cladding dimensions of 8.5/125 micron. It provides the precise optical link required for ControlLogix redundancy module communication. The single-mode design supports the necessary data integrity for high-availability applications. Length and optical specifications are fixed; the cable cannot be extended or adapted for multi-mode requirements.

Replaces Damaged Redundancy Links

This product replaces a failed or missing 1756-RMC1 cable in an existing 1756-RMx redundancy assembly. Up to two cables may be required per assembly, so the upgrade is worth it when restoring full redundancy after a link failure. It is not for builders needing multi-mode fiber, different connector types, or longer run lengths than 3.28 feet.

Highlights

  • Single-mode fiber ensures reliable long-distance data links
  • 28 ft length fits standard ControlLogix rack spacing
  • 5/125 micron core/cladding matches single-mode specifications
  • LC connector provides secure low-loss connections
  • One transmit/receive channel simplifies redundancy module wiring

Specifications

No published specifications for this item yet.

Questions about this item

Will the 1756-RMC1 cable connect to the LC ports on my existing ControlLogix redundancy modules?

Yes, the cable uses LC type connectors that match the ports on ControlLogix redundancy modules in the 1756-RMx series.

How can I confirm the 3.28 ft fiber link is passing data between the two redundancy modules?

Check the module status LEDs for an active link light and verify the redundancy state shows healthy in the ControlLogix controller properties.

Does the box include two 1756-RMC1 cables so I can complete a full redundancy assembly?

The product is sold as a single 3.28 ft cable; a second cable must be purchased separately if your assembly requires two.

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