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1786-RG6

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The Allen-Bradley 1786-RG6 is a standard RG-6 coaxial trunk cable designed for ControlNet networks, delivering stable signal transmission over long distances.
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Technical specifications for 1786-RG6

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    1786-RG6
  • Product Family:
    1786 Repeaters
  • Product Type:
    ControlNet Coaxial 1000 Feet Cable
  • Stock:
    1
  • Flex Type:
    Standard
  • Armour:
    False
  • Attenuation at 10 MHz per 1000 ft (304 m):
    5.99 dB
  • Component:
    Standard PVC CM-CL2
  • Length of cable:
    304.8 m (1000 ft)
  • Network Type:
    ControlNet
  • Cable Type:
    RG-6
  • Impedance:
    75 Ω
  • Shielding:
    Quad-shield
  • Conductor Type:
    Solid Copper
  • Jacket Material:
    Industrial PVC
  • Dielectric Type:
    Foam PE
  • Connector Compatibility:
    ControlNet BNC
  • Operating temperature:
    0-60°(32-140°F)
  • Storage temperature:
    -40-85 °C(-40-185 °F)
  • Relative humidity:
    5-95% non-condensing
  • Weight:
    17.26 kg
  • Estimated shipping dimensions:
    46x46x32cm
  • Tariff Code:
    8537101190
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications Use Cases Environment & Monitoring Connectivity & Security

Features:

  • High signal stability ensured by low attenuation and solid copper conductor construction.
  • Enhanced EMI protection through quad-shield coaxial design for industrial environments.
  • Flexible network design supported by precise segment length calculations based on tap count.
Allen-Bradley 1786-RG6 plays a central role in ControlNet infrastructure by enabling consistent and predictable data transmission across distributed automation systems. Industrial networks often require long cable runs with multiple nodes, and this cable supports such configurations while maintaining signal integrity. Its standardized RG-6 format aligns with ControlNet requirements, making integration straightforward. Reliable communication is essential in process control and manufacturing automation, where downtime can result in significant losses. This cable helps ensure that controllers, I/O modules, and other devices remain synchronized. As a result, Allen-Bradley 1786-RG6 is widely used in critical control environments.

From a functional perspective, Allen-Bradley 1786-RG6 provides a balance between performance and installation practicality. The cable's structure, including foam PE dielectric and industrial PVC jacket, contributes to both electrical efficiency and mechanical durability. Its compatibility with BNC connectors simplifies deployment and maintenance. Engineers can design network layouts with confidence by applying defined formulas for segment length and tap limitations. Even in systems requiring mixed cable types, the use of standard RG-6 as a baseline ensures optimal results. This makes the cable suitable for both new installations and system expansions.

In real-world applications, Allen-Bradley 1786-RG6 is commonly deployed in manufacturing plants, energy facilities, and process industries where ControlNet is used. The cable supports stable communication between PLCs, distributed I/O, and operator interfaces. By minimizing signal loss and resisting interference, it contributes to overall system reliability. Proper planning using attenuation and tap-based calculations allows efficient use of infrastructure while avoiding performance degradation. When combined with repeaters, even larger networks can be achieved by segmenting the system. This flexibility ensures that Allen-Bradley 1786-RG6 remains a practical choice for scalable industrial networks.

The 1786-RG6 Allen-Bradley ControlNet Coaxial 1000 Feet Cable may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Allen-Bradley 1786-RG6 ControlNet Coaxial 1000 Feet Cable Manuals,Datasheets,Link 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.
Allen-Bradley 1786-RG6 ControlNet Coaxial 1000 Feet Cable Specs

General

  • Manufacturer Allen-Bradley
  • Model 1786-RG6
  • Condition New Original ready stock
  • Product Family 1786-RG6/A,1786-RG6F,1786-RG6F/B
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.
  • Backbone Deployment: Serves as the ControlNet backbone network for large-scale industrial automation systems, connecting multi-area control systems.
  • Distributed I/O Links: Seamlessly connects the central control cabinet to remote distributed I/O stations (such as 1794 Flex I/O) over long distances, enabling deterministic data transmission.
  • Controller Peer-to-Peer Communication: Establishes a high-speed, high-frequency physical layer channel for data exchange between PLC-5 or ControlLogix controllers.
  • Redundant Network Setup: Supports the construction of multi-layer physical media redundancy topologies, ensuring uninterrupted operation of the core industrial automation system.
  • Electromagnetic Interference Protection: Utilizes a four-layer shielded physical isolation structure to specifically resist high-frequency noise generated by high-power motors or frequency converters in the workshop.
  • Temperature and Humidity Protection: Suitable for typical industrial plant environments, maintaining stable impedance characteristics even under harsh conditions with non-condensing relative humidity up to 95%.
  • Signal Attenuation Monitoring: Supports integration with network connectors and repeater equipment, helping engineers track and monitor attenuation changes during long-distance transmission using oscilloscopes and other methods.
  • Marine Industry Applications: The product design complies with marine-grade safety and environmental assessment standards and can be used for the installation of embedded control networks on various ocean-going vessels.
  • Anti-Loosening Locking: Compatible with dedicated BNC/TNC connectors, using a tightening and pin-locking process to prevent poor contact caused by high-frequency vibrations of machinery and equipment.
  • Seamless Cabinet Passage: Allows for use with isolated partition connectors, enabling complete electrical isolation between high-voltage cables and sensitive control buses when passing between cabinets.
  • Loss-Proof Branching: Low-loss signal branching is achieved through standard active or passive T-type taps, avoiding arbitrary wire stripping that could damage the impedance matching of the entire bus.
  • Fire and Flame Retardant Standards: Utilizes an industrial-grade flame-retardant PVC outer sheath, effectively delaying the spread of flames in the event of an external fire.
Description
The Allen-Bradley 1786-RG6 ControlNet coaxial cable is engineered to support reliable communication across ControlNet segments, where one or more trunk cable sections are interconnected by taps and terminated at both ends. The total segment length is determined by summing all trunk sections, making cable selection and layout critical for maintaining network integrity. This standard RG-6 cable provides a dependable baseline for segment design due to its controlled attenuation and consistent electrical characteristics.

With an attenuation of 5.99 dB per 1000 ft at 10 MHz, Allen-Bradley 1786-RG6 enables long-distance transmission while preserving signal quality. A single segment can reach up to 1000 m (3280 ft) when only two taps are used. As additional taps are introduced, the allowable length decreases by 16.3 m (53 ft) per tap, with a maximum of 48 taps supported at a reduced length of 250 m (820 ft). This relationship allows precise planning of network topology based on node count and layout requirements.

In systems where high-flex cable such as 1786-RG6F is required, the overall segment distance must be carefully adjusted. High-flex cable exhibits higher attenuation, meaning its use reduces the allowable total length of the segment. For example, converting high-flex cable length into equivalent standard RG-6 length using attenuation ratios ensures accurate calculation of network limits. This approach helps maintain signal integrity while accommodating flexible installation zones.

A mixed cable system benefits from isolating high-flex sections using BNC or TNC bullet connectors. This strategy allows flexible cable segments to be replaced independently before reaching flex life limits, without affecting the rest of the network. By minimizing the use of high-flex cable and relying primarily on Allen-Bradley 1786-RG6, users can maximize segment length and maintain optimal performance.

Physically, Allen-Bradley 1786-RG6 features a quad-shield design, solid copper conductor, and industrial-grade PVC jacket, ensuring durability in demanding environments. The foam PE dielectric enhances signal transmission stability, while compatibility with ControlNet BNC connectors simplifies installation. Operating within 0 to 60°C and supporting storage conditions from -40 to 85°C, this cable is well-suited for a wide range of industrial automation applications.
Revisions

Revision Part #

Also known as

1786-RG6 Ser A
1786-RG6/A, Series A, Rev A
Alternative Names
I786-RG6 1786RG6 1786-RG6/A 1786-RG6F/B 1786-RG6F 1786-CTK 1788-CNCHKR 1788-MCHKR
Technical notes
The Allen-Bradley 1786-RG6 is a 75-ohm quad-shielded ControlNet coaxial cable supplied on a 1000-foot reel, designed to prevent high-noise EMI interference while delivering a standard low attenuation of 5.99 dB per 1000 feet at 10 MHz for reliable industrial peer-to-peer and I/O communication.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What network type supports Allen-Bradley 1786-RG6?
Allen-Bradley 1786-RG6 is specifically designed for ControlNet communication systems using coaxial topology.
Why attenuation matters for Allen-Bradley 1786-RG6 in long segments?
Attenuation directly affects signal strength, and the 5.99 dB value at 10 MHz allows predictable calculation of maximum segment length.
How segment length changes when adding taps to Allen-Bradley 1786-RG6?
Each additional tap beyond two reduces allowable length by 16.3 m (53 ft), impacting total network distance.
What advantages come from quad shielding in Allen-Bradley 1786-RG6?
Quad shielding improves resistance to electromagnetic interference, ensuring stable data transmission in industrial environments.

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