Product Overview

The Allen-Bradley 1747-C13 Communication Cable is a dedicated industrial communication accessory designed for connecting compatible devices within Allen-Bradley SLC 500 automation systems. Manufactured by Rockwell Automation, this cable supports communication between specialty modules and isolated link couplers in applications using the DH-485 communication architecture.

In industrial automation systems, reliable communication between controllers, interface modules, and peripheral devices is essential for data exchange, programming, monitoring, and equipment coordination. The 1747-C13 provides a physical communication connection for compatible SLC 500 components, helping establish the required signal path between devices.

With a cable length of 3 feet (approximately 0.91 meters), the 1747-C13 is intended for relatively short-distance connections within a control cabinet or nearby equipment arrangement. Its compact length can help keep communication wiring organized and reduce unnecessary cable routing around other control components.

A typical application is connecting an Allen-Bradley 1746-BAS BASIC module to a 1747-AIC Isolated Link Coupler. The cable is also associated with compatible DH-485 communication arrangements involving the 1747-UIC USB-to-DH-485 Interface Converter and 1747-KE DH-485/RS-232C Interface Module.

One important installation detail is that the 1747-C13 carries communication signals but does not provide the 24 V DC power required by the 1747-AIC. The link coupler must receive power through an appropriate separate connection or external supply.

The 1747-C13 is now a discontinued product. It may still be required for maintenance, repair, and continued operation of existing SLC 500 installations. When sourcing this cable, engineers should verify the catalog number, connector condition, cable length, and compatibility with the connected modules.

Technical Specifications

Note: The 3 kg figure is the supplied shipping weight, not a confirmed cable net weight. Confirm the actual packaged weight with the supplier before arranging transportation.

Function and Working Principle

The 1747-C13 is designed to provide a physical communication path between compatible SLC 500 system components. It does not perform independent data processing or control operations. Instead, it connects devices so that communication signals can pass between the appropriate interfaces.

1. Communication Signal Transmission

The cable provides the physical connection required for communication between compatible modules and link couplers. In a DH-485 installation, this connection supports the exchange of information between devices that participate in the communication arrangement.

The cable itself does not determine communication protocols, configure network addresses, or execute control logic. These functions are handled by the connected modules and controllers.

2. Specialty Module Connection

One documented application is connecting a 1746-BAS BASIC module to a 1747-AIC Isolated Link Coupler.

The BASIC module can participate in an SLC 500 control system, while the link coupler provides an interface to the DH-485 network. The 1747-C13 establishes the required communication connection between these devices.

Correct module identification and connector orientation are important when installing the cable.

3. DH-485 Network Connectivity

The 1747-C13 can also be used in compatible communication arrangements involving the 1747-UIC USB-to-DH-485 Interface Converter and 1747-KE communication module.

These connections can support programming, maintenance, or data communication tasks within an existing SLC 500 installation.

The cable must be used with compatible interfaces. It should not be treated as a universal serial cable or a standard Ethernet patch cable.

4. Separate Power and Communication Paths

A key characteristic of the 1747-C13 is that it carries communication signals but does not carry the 24 V DC power required by the 1747-AIC Isolated Link Coupler.

This distinction is important during installation. The link coupler must receive power through a suitable processor connection or an external 24 V DC supply, according to the system design.

Using the 1747-C13 alone does not guarantee that the connected link coupler will be powered or operational.

Role in Industrial Control Systems

The 1747-C13 supports communication connectivity within legacy Allen-Bradley SLC 500 automation installations. Although it is a passive cable, its role is important because an incorrect or damaged communication connection can interrupt data exchange between connected devices.

SLC 500 System Connectivity

The SLC 500 family uses different modules and communication accessories to support controller operation, programming, and network connectivity.

The 1747-C13 can provide a connection between compatible specialty modules and isolated link couplers, helping maintain the communication structure of the existing control system.

BASIC Module Communication

The 1746-BAS BASIC module is one of the devices associated with the 1747-C13. In a suitable configuration, the cable connects the BASIC module to the 1747-AIC Isolated Link Coupler.

This connection allows the module to participate in the relevant DH-485 communication arrangement.

Programming and Maintenance

Communication cables are often required when technicians configure, inspect, or troubleshoot legacy automation equipment.

The 1747-C13 may be used as part of a maintenance setup involving compatible communication converters and SLC 500 devices. Its correct use depends on the connected hardware and the communication procedure being followed.

Industrial Equipment Integration

In an established production line, the cable helps maintain connections between the control system’s communication components. This can be important when replacing damaged accessories or restoring communication after cabinet maintenance.

The cable does not independently increase controller performance or network speed. Its purpose is to provide the appropriate physical connection.

Industrial Applications

The 1747-C13 is primarily intended for existing SLC 500 installations rather than general-purpose communication wiring.

1. SLC 500 Control Cabinets

Industrial control cabinets containing SLC 500 controllers and specialty modules may require dedicated communication cables to connect their interfaces.

The 1747-C13 can be used in compatible module-to-link-coupler arrangements, helping maintain the intended communication path.

2. BASIC Module Applications

Systems using the 1746-BAS BASIC module may require the 1747-C13 to establish communication with a 1747-AIC Isolated Link Coupler.

This connection is relevant to legacy applications where BASIC modules remain part of the control architecture.

3. DH-485 Communication Networks

The cable is associated with compatible DH-485 communication arrangements. These networks may be used for communication between SLC 500 devices and related interface equipment.

Correct network configuration and compatible hardware are necessary for reliable communication.

4. PLC Programming and Maintenance

During troubleshooting or system maintenance, technicians may need to connect interface converters and controller-related equipment.

The 1747-C13 can support suitable connections involving the 1747-UIC USB-to-DH-485 Interface Converter and other compatible devices.

5. Legacy Automation System Restoration

Many industrial facilities continue operating established SLC 500 control systems. When a communication cable becomes damaged, an exact replacement can help restore the original wiring arrangement without redesigning the entire system.

For these applications, confirming the original cable catalog number is particularly important.

Installation and System Integration

Correct installation helps maintain communication reliability and prevents unnecessary troubleshooting.

1. Verify the Cable Model

Before installation, confirm that the cable is identified as Allen-Bradley 1747-C13.

Do not assume that other SLC 500 cables are interchangeable. Models such as 1747-C10, 1747-C11, and 1747-CP3 serve different connection purposes and have different wiring or interface characteristics.

2. Confirm Connected Devices

Identify both devices that the cable will connect. For example, a typical application involves a 1746-BAS BASIC module and a 1747-AIC Isolated Link Coupler.

Check the relevant installation documentation to confirm the intended ports and connector arrangement.

3. Check the Power Supply Arrangement

The 1747-C13 does not carry the 24 V DC power required by the 1747-AIC.

Before commissioning, confirm that the link coupler receives power through the correct processor cable or a suitable external 24 V DC supply.

Do not assume that connecting the communication cable alone will power the link coupler.

4. Inspect the Connectors

Before installation, examine both cable ends for damaged contacts, contamination, loose components, or physical deformation.

A damaged connector may cause intermittent communication or prevent the connected devices from establishing a reliable link.

5. Route the Cable Carefully

Keep communication wiring organized and avoid unnecessary tension, sharp bends, or mechanical pressure.

Where practical, separate communication cables from high-voltage conductors and sources of electrical interference. Follow the installation requirements of the connected devices.

6. Test Communication

After connecting the cable, verify that the relevant devices are powered and that the communication link operates as expected.

If communication fails, inspect the cable, connector seating, device configuration, port selection, and separate power supply arrangement.

Compatible System Components

The 1747-C13 is associated with several Allen-Bradley SLC 500 communication products.

The components listed above are not included with the 1747-C13 cable. Confirm the required cables, power connections, and interface hardware for the actual installation.

Alternative Models and Replacement Considerations

The 1747-C13 is discontinued, and Rockwell Automation has not announced a planned direct replacement for this catalog number.

When sourcing a replacement, the priority should be to identify the original connection function rather than selecting another cable simply because it belongs to the SLC 500 family.

Before selecting an alternative, compare:

• The connected module catalog numbers.
• The communication interface and protocol.
• Connector types and pin assignments.
• Cable wiring and signal functions.
• Whether the connection requires a separate 24 V DC supply.
• The required cable length.
• The installation and commissioning documentation.

A cable that physically fits a connector may still have a different electrical pinout or function. Always verify compatibility before connecting replacement wiring.

Key Advantages

Dedicated SLC 500 Compatibility

The 1747-C13 is designed for specific communication connections within the Allen-Bradley SLC 500 product family.

Specialty Module Connectivity

It provides a documented connection between compatible specialty modules, such as the 1746-BAS BASIC module, and the 1747-AIC Isolated Link Coupler.

DH-485 Communication Support

The cable supports suitable communication arrangements involving DH-485 interfaces and compatible SLC 500 equipment.

Compact Cable Length

Its 3 ft length is suitable for short-distance connections in control cabinets and nearby equipment arrangements.

Simplified Cabinet Wiring

Using the specified cable helps maintain the intended connection arrangement and can reduce the need for improvised wiring.

Useful for Legacy System Maintenance

The 1747-C13 remains relevant to facilities that maintain older SLC 500 systems and need to replace damaged or missing communication accessories.

Technical FAQs

1. What is the Allen-Bradley 1747-C13?

The 1747-C13 is a specialty communication cable designed for compatible SLC 500 equipment. It is used for module-to-Isolated Link Coupler communication connections.

2. What is the cable length?

The specified cable length is 3 feet, approximately 0.91 meters.

3. What devices can the 1747-C13 connect?

A documented application is connecting a 1746-BAS BASIC module to a 1747-AIC Isolated Link Coupler. It is also associated with compatible 1747-UIC and 1747-KE communication arrangements.

4. Does the 1747-C13 support DH-485 communication?

Yes. It is used in compatible DH-485 communication connections within the SLC 500 system.

5. Does the cable provide 24 V DC power to the 1747-AIC?

No. The 1747-C13 carries communication signals only. The 1747-AIC must receive 24 V DC through another suitable connection or an external power supply.

6. Can the 1747-C13 replace a 1747-C10 or 1747-C11?

Not automatically. These cables have different intended connection functions and power characteristics. Check the connected equipment and wiring requirements before choosing a substitute.

7. Is the 1747-C13 an Ethernet cable?

No. It is a dedicated SLC 500 communication cable associated with DH-485 applications. It should not be treated as a standard Ethernet patch cable.

8. Is the 1747-C13 still manufactured?

Rockwell Automation announced its discontinuation effective September 30, 2024. No planned direct replacement was identified in the manufacturer’s lifecycle information.

9. What should be checked when buying a used 1747-C13?

Check the catalog number, cable length, connector condition, cable jacket, and continuity. For critical installations, verify the cable’s electrical suitability and communication performance before returning the system to service.

10. Is 3 kg the cable’s net weight?

The supplied 3 kg figure is identified as shipping weight. It should not be treated as the cable’s confirmed net weight. Verify the packaged weight with the supplier before calculating freight costs.

Procurement and Maintenance Recommendations

The 1747-C13 is a discontinued accessory, so procurement should focus on exact catalog-number identification and physical condition.

When purchasing this cable, confirm that the product is marked 1747-C13 and has the required 3 ft length. Request photographs of both connectors and the cable jacket, especially when buying used, refurbished, or surplus inventory.

For critical industrial applications, confirm the cable’s continuity and communication performance before installation. A cable that appears physically intact may still have damaged conductors or connector contacts.

During maintenance, inspect the connectors for contamination and mechanical damage. Avoid pulling the cable by its connectors, bending it sharply, or routing it alongside high-interference power conductors without suitable separation.

When replacing an existing 1747-C13, verify the connected module types and the required power arrangement for the 1747-AIC. Do not substitute another SLC 500 cable without checking its pinout and function.

Conclusion

The Allen-Bradley 1747-C13 Communication Cable is a dedicated 3 ft accessory for compatible SLC 500 communication applications. It provides the physical communication connection between specialty modules and isolated link couplers, including the documented 1746-BAS-to-1747-AIC arrangement.

Its role in the system is signal transmission rather than power delivery. The 1747-C13 does not supply the 24 V DC required by the 1747-AIC, so the link coupler must have a separate appropriate power connection.

Although the product has been discontinued, it remains relevant to maintenance and replacement projects involving legacy Allen-Bradley automation equipment. Verifying the exact cable model, connected devices, connector condition, and power arrangement helps ensure a suitable replacement and reliable system operation.