Introduction

The Allen Bradley 1786-TJPR ControlNet Coaxial Cable Jumper is intended for short coaxial connections in compatible industrial ControlNet networks. Although small cable assemblies may appear simple, their electrical characteristics and connector interfaces are important for maintaining the integrity of industrial communication systems.

ControlNet infrastructure relies on appropriate media components and correct connection practices to support communication between compatible automation devices. Selecting the specified jumper can help maintenance teams preserve the intended network arrangement and simplify cable replacement.

The supplied product information specifies a cable length of 5 inches and a shipping weight of 3 kg. Since the shipping weight may include packaging or other supplied materials, it should not be interpreted as the cable's net weight. Confirm the connector type, exact assembly configuration, and compatibility before ordering.

Technical Specifications

Parameter	Specification
Brand	Allen Bradley
Model	1786-TJPR
Product Type	ControlNet Coaxial Cable Jumper
Product Category	Industrial Network Cable Assembly
Network	ControlNet
Cable Length	5 inches
Shipping Weight	3 kg / 6.61 lb
Cable Type	Coaxial
Connector Configuration	Verify against the exact product documentation
Characteristic Impedance	Confirm from manufacturer specifications
Application	Short-distance ControlNet network connections
Compatibility	Verify against the installed network media and equipment

The cable length and shipping weight are based on the supplied product information. Verify the detailed cable specifications and connector configuration before procurement.

Recommended Related Models

The following Allen Bradley products may be relevant when maintaining or expanding ControlNet coaxial network infrastructure. Their functions differ, so verify suitability before selecting an alternative.

Model	Product Type	Selection Consideration
Allen Bradley 1786-RG6	ControlNet Coaxial Cable	Verify cable characteristics and connector requirements
Allen Bradley 1786-TPR	ControlNet T-Tap	Confirm the required coaxial connection arrangement
Allen Bradley 1786-TPYR	ControlNet Y-Tap	Check compatibility with the intended network topology
Allen Bradley 1786-XT	ControlNet Terminator	Verify the network segment's termination requirements

These components should not be treated as direct replacements for the 1786-TJPR without confirming the required function and specifications.

Popular Related Models

Other Allen Bradley ControlNet components may be useful when planning network maintenance or replacement.

Model	Product Type	Typical Role
Allen Bradley 1786-RPA	ControlNet Repeater Adapter	Supports compatible repeater configurations
Allen Bradley 1786-RPFM	ControlNet Fiber Repeater Module	Supports fiber-optic communication in compatible installations
Allen Bradley 1786-RPFS	ControlNet Short-Range Fiber-Optic Repeater Module	Supports compatible short-range fiber-optic links
Allen Bradley 1786-FS60	ControlNet Fiber-Optic Cable Assembly	Provides fiber-optic connectivity in supported network configurations

These products serve different roles and are not interchangeable with a coaxial cable jumper. Confirm the media type, connector requirements, and network architecture before ordering.

Applications

The Allen Bradley 1786-TJPR ControlNet Coaxial Cable Jumper is an industrial network cabling accessory intended for use in compatible ControlNet coaxial communication installations. Coaxial jumpers provide short cable connections between designated network interfaces and media components, helping establish the physical connections required by the network design.

With a specified cable length of 5 inches, this jumper is suited for applications where a short connection is required, subject to connector compatibility and the approved ControlNet wiring arrangement.

Typical applications include:

ControlNet Network Connections: Providing short coaxial connections between compatible network components.
Control Cabinet Wiring: Supporting compact cable routing between designated connection points.
Industrial Automation Maintenance: Replacing a damaged or missing jumper in a compatible ControlNet installation.
Network Troubleshooting: Supporting maintenance work when checking cable connections and communication faults.
ControlNet Infrastructure Upgrades: Providing a short cable connection where the existing network design specifically requires one.

Before installation, confirm the connector configuration, cable characteristics, and intended connection points against the applicable ControlNet documentation.

Advantages

Short Cable Length: The specified 5-inch length supports compact connection arrangements where a short coaxial jumper is required.
ControlNet Application: Intended for use in compatible ControlNet coaxial network installations.
Simplified Cable Management: A short jumper can help reduce excess cable in suitable cabinet and equipment layouts.
Maintenance Convenience: A correctly identified replacement can simplify repair and spare-parts planning.
Clear Model Identification: The catalog number helps distinguish the required cable assembly during procurement.
Flexible Installation Planning: Supports connection layouts that require a short coaxial cable link, provided the network design permits it.

Connector type, characteristic impedance, shielding, and other electrical properties should be verified before purchase. Do not assume that a physically similar coaxial jumper is compatible with ControlNet equipment.

Technical FAQs

Q1: What is the primary function of the Allen Bradley 1786-TJPR?

The 1786-TJPR is identified as a ControlNet coaxial cable jumper. Its purpose is to provide a short cable connection in a compatible ControlNet media arrangement.

Q2: What does the 5-inch cable length mean?

The supplied specification indicates a cable length of 5 inches. Confirm the measurement convention and connector arrangement before determining whether the jumper fits the intended installation.

Q3: Why is characteristic impedance important for coaxial network cables?

The cable's characteristic impedance must match the communication system's requirements. An impedance mismatch can cause signal reflections and interfere with reliable data transmission.

Q4: Can this jumper be used with any coaxial network?

No. Compatibility depends on the cable's electrical characteristics, connector type, and network requirements. Verify these details before connecting the jumper.

Q5: What should be inspected before installation?

Check the connector interfaces, cable jacket, contact condition, and specified cable characteristics. Ensure that the jumper is suitable for the intended connection points.

Q6: Can a short jumper cause network communication problems?

Yes. An incompatible, damaged, or improperly connected jumper can affect signal quality. Follow the approved wiring and connection requirements for the ControlNet installation.

Q7: Does a coaxial cable jumper require network termination?

Termination depends on the network topology and the jumper's role. Follow the specified ControlNet termination arrangement rather than adding or removing termination components without verification.

Q8: How should the jumper be routed?

Avoid sharp bends, crushing, excessive pulling force, and unnecessary mechanical stress. Follow the cable manufacturer's installation recommendations.

Q9: How can a faulty jumper be identified?

Inspect the cable and connectors for visible damage, then check network diagnostics and connection continuity using suitable procedures. Replace the jumper if damage or an electrical fault is confirmed.

Q10: What should be verified when ordering a replacement?

Confirm the full catalog number, cable length, connector configuration, electrical characteristics, and compatibility with the installed ControlNet equipment.

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